Integrated circuit development board based on HYM32F407AZGT

Abstract

The utility model provides an HYM32F407AZGT-based integrated circuit development board. The HYM32F407AZGT-based integrated circuit development board comprises a single-chip microcomputer basic system, and a USB-to-USART serial port module, a memory module, a CAN module, an Ethernet transceiver module and a large-capacity memory module which are respectively connected to the single-chip microcomputer basic system, the single-chip microcomputer basic system comprises an MCU main control chip, a filter capacitor, a JATG / SW download interface circuit, an RC key reset circuit, an external hardware watchdog circuit, an external active crystal oscillator circuit, an external precision voltage source circuit, a digital-analog isolation circuit and a BOOT configuration circuit. The single-chip microcomputer basic system is further provided with an LED indicating lamp, a KEY light touch key and a pin leading-out pin header. According to the utility model, various complex application scene requirements such as data communication, storage expansion, network connection and the like can be met, and the workload of a user on hardware model selection and design is reduced. The pin header is led out through the pin, so that a user can conveniently connect with other external equipment or an expansion module, the function of the development board is further expanded, and different application requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of circuit board, concretely relates to an integrated circuit development board based on HYM32F407AZGT. BACKGROUND

[0002] In the modern electronic industry, in the application verification of integrated circuit chips, since the device must rely on the peripheral circuit to work normally, therefore, there is the technical problem that the actual working state of the device needs to be simulated.

[0003] In the related art, the existing integrated circuit development board is mostly simple in structure, single in function, lacks the condition of testing important function, and is prone to cause the problem of incomplete application verification. CONTENT OF UTILITY MODEL

[0004] Therefore, the utility model provides an integrated circuit development board based on HYM32F407AZGT to solve the problem of single function of the HYM32F407AZGT integrated circuit development board, lack of the condition of testing important function, and easy to cause the problem of incomplete application verification in the prior art.

[0005] The utility model provides an integrated circuit development board based on HYM32F407AZGT, including singlechip basic system and USB conversion USART serial port module, memory module, CAN module, ethernet transceiver module and mass storage module connected to singlechip basic system respectively, the singlechip basic system includes MCU master control chip, filter capacitor, JATG / SW download interface circuit, RC button reset circuit, external hardware watchdog circuit, external active crystal oscillator circuit, external precision voltage source circuit, digital analog isolation circuit and BOOT configuration circuit, the singlechip basic system is equipped with LED pilot lamp, KEY touch button and pin lead-out row pin still, the USB conversion USART serial port module includes USB input interface and USART serial port conversion chip circuit, the memory module includes the EEPROM memory circuit of I2C interface, the NOR Flash memory circuit of SPI interface, the CAN module includes CAN interface circuit and CAN transceiver circuit, the ethernet transceiver module includes RJ45 interface circuit, external active crystal oscillator circuit, hardware configuration circuit, LED pilot lamp circuit and ethernet transceiver circuit, the mass storage module includes the NOR Flash memory circuit of FSMC interface.

[0006] In an alternative embodiment, the HYM32F407AZGT-based integrated circuit development board further comprises a power module connected to the single-chip microcomputer basic system, the USB-to-USART serial port module, the memory module, the CAN module, the Ethernet transceiver module, and the mass storage module.

[0007] In an alternative embodiment, the power module comprises a power interface circuit, an input protection circuit, a first-stage voltage conversion circuit, a second-stage voltage conversion circuit, a third-stage voltage conversion circuit, and an LED indicator lamp circuit.

[0008] In an alternative embodiment, the input protection circuit comprises a self-resetting fuse, a bidirectional TVS tube, and a large-capacity filter capacitor, wherein the self-resetting fuse and the bidirectional TVS tube are placed close to the power input interface, the power input end PCB trace width is not less than 1.5 MM, and the power trace follows the path of first passing through a large-capacity capacitor and then passing through a small-capacity capacitor.

[0009] In an alternative embodiment, the USB-to-USART serial port module comprises a USART serial port conversion chip circuit and a USB interface circuit, wherein the USB interface circuit comprises a T-ypeC interface circuit and a USBA slave interface circuit.

[0010] In an alternative embodiment, the data transmission line DP- and DP+ between the USART serial port conversion chip circuit and the T-ypeC interface circuit adopts equal-length differential lines for impedance control, with an impedance control setting of 90R. The data transmission line USB_DM and USB_DP between the USBA slave interface and the MCU master chip adopts equal-length differential lines for impedance control, with an impedance setting of 90R, and both data lines are connected in series with a 22R resistor.

[0011] In an alternative embodiment, the Ethernet transceiver module comprises an Ethernet transceiver circuit, a hardware configuration circuit, an LED indicator lamp circuit, an external active crystal oscillator circuit, and an RJ45 interface circuit, wherein the data lines MDI[0] and MDI[1] between the Ethernet transceiver circuit and the RJ45 interface circuit adopt equal-length differential lines for impedance control, with an impedance control of 90R.

[0012] In an alternative embodiment, the data lines for data interaction between the Ethernet transceiver circuit and the MCU master chip are connected in series with a 33R resistor to prevent signal reflection.

[0013] In an alternative embodiment, the data transmission end resistor of the Ethernet transceiver circuit is placed close to the data reception end pin, and the data reception end pin resistor is placed close to the data transmission end pin.

[0014] In an alternative embodiment, the data receiving groups RX[3:0] and the receiving clock line RX_CLK adopt equal-length wiring, the relative error is set to 5%, and the receiving clock line RX_CLK is taken as the equal-length reference line of the data receiving groups RX[3:0]; the data transmitting groups TX[3:0] and the transmitting clock line TX_CLK adopt equal-length wiring, the relative error is set to 5%, and the transmitting clock line TX_CLK is taken as the equal-length reference line of the data transmitting groups TX[3:0].

[0015] The HYM32F407AZGT type integrated circuit development board of the utility model has integrated a variety of functional modules such as a single-chip microcomputer basic system and a USB to USART serial port module, a memory module, a CAN module, an Ethernet transceiver module and a large-capacity memory module, can satisfy the needs of a variety of complex application scenarios, such as data communication, storage expansion, network connection and the like, and reduces the workload of users in hardware selection and design. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Figure 1 It is an embodiment of the structure schematic diagram of the integrated circuit development board based on HYM32F407AZGT of the utility model;

[0018] Figure 2 It is the MCU master control chip principle diagram of the integrated circuit development board based on HYM32F407AZGT of an embodiment of the utility model;

[0019] Figure 3 It is the power module principle diagram of the integrated circuit development board based on HYM32F407AZGT of an embodiment of the utility model;

[0020] Figure 4 It is the USB to USART serial port module principle diagram of the integrated circuit development board based on HYM32F407AZGT of an embodiment of the utility model;

[0021] Figure 5The memory module principle diagram of the integrated circuit development board based on HYM32F407AZGT according to an embodiment of the present application;

[0022] Figure 6 The CAN transceiver module principle diagram of the integrated circuit development board based on HYM32F407AZGT according to an embodiment of the present application;

[0023] Figure 7 The Ethernet transceiver module circuit of the integrated circuit development board based on HYM32F407AZGT according to an embodiment of the present application;

[0024] Figure 8 The mass storage module circuit of the integrated circuit development board based on HYM32F407AZGT according to an embodiment of the present application.

[0025] Marked with the figure:

[0026] 1, single-chip microcomputer basic system; 2, power module; 3, USB to USART serial port module; 4, memory module; 5, CAN transceiver module; 6, Ethernet transceiver module; 7, mass storage module. Specific implementation

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0029] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mount", "link", "connect" should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be the intercommunication of two elements.

[0030] In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as there is no conflict.

[0031] The embodiments of the utility model are described below. Figures 1 to 8 , describe the embodiment of the utility model.

[0032] As Figure 1 Indicated, according to the embodiment of the utility model, an integrated circuit development board based on HYM32F407AZGT is provided, including single-chip microcomputer basic system 1, USB-USART serial port module 3, memory module 4, CAN transceiver module 5, Ethernet transceiver module 6 and mass storage module 7;

[0033] Single-chip microcomputer basic system 1 is also the minimum system of single-chip microcomputer, is connected with USB-USART serial port module 3, memory module 4, CAN module 5, Ethernet transceiver module 6 and mass storage NOR Flash memory module 7 respectively.

[0034] Single-chip microcomputer basic system 1 includes filter capacitor, JATG / SW download interface circuit, RC key reset circuit, external hardware watchdog circuit, external active crystal oscillator circuit, external precision voltage source circuit, digital-analog isolation circuit, BOOT configuration circuit, LED indicator circuit, KEY touch key circuit and pin lead-out row pin.

[0035] USB-USART serial port module 3 includes USB interface circuit and USART serial port conversion chip circuit.

[0036] Memory module 4 includes EEPROM memory circuit of I2C interface, NOR Flash memory circuit of SPI interface.

[0037] CAN module 5 includes CAN interface circuit and CAN transceiver circuit.

[0038] Ethernet transceiver module 6 includes RJ45 interface circuit, external active crystal oscillator circuit, hardware configuration circuit, LED indicator circuit and Ethernet transceiver circuit.

[0039] The mass storage module 7 includes a NOR Flash memory circuit of the FSMC interface.

[0040] The power module 2 is connected with the single-chip microcomputer basic system 1, the USB-to-USART serial port module 3, the memory module 4, the CAN module 5, the Ethernet transceiver module 6 and the mass NOR Flash memory module 7.

[0041] The power module 2 includes a power interface circuit, an input protection circuit, a first-stage voltage conversion circuit, a second-stage voltage conversion circuit, a third-stage voltage conversion circuit and an LED indicator lamp circuit.

[0042] As shown in Figure 1 The utility model HYM32F407AZGT type integrated circuit development board, including single-chip microcomputer basic system 1, power module 2, USB-to-USART serial port module 3, memory module 4, CAN transceiver module 5, Ethernet transceiver module 6, mass storage module 7, wherein, power module 2 is connected with single-chip microcomputer basic system 1, USB-to-USART serial port module 3, memory module 4, CAN module 5, Ethernet transceiver module 6 and mass NOR Flash memory module 7 simultaneously, wherein single-chip microcomputer basic system 1 is connected with USB-to-USART serial port module 3, memory module 4, CAN module 5, Ethernet transceiver module 6 and mass NOR Flash memory module 7 respectively.

[0043] As shown in Figure 2 The minimum system 1 includes an MCU master control chip, a filter capacitor, a SW / JATG download interface circuit, an RC key reset circuit, an external hardware watchdog circuit, an external precision voltage source circuit, a digital-analog isolation circuit, a BOOT configuration circuit, an LED indicator lamp circuit, a KEY touch key circuit and a pin lead-out row pin.

[0044] As shown in Figure 3 The power module 2 includes a power interface circuit, an input protection circuit, a first-stage voltage conversion circuit, a second-stage voltage conversion circuit, a third-stage voltage conversion circuit and an LED indicator lamp circuit.

[0045] As shown in Figure 4 The USB-to-USART serial port module 3 includes a USB interface circuit and a USART serial port conversion chip circuit.

[0046] As shown in Figure 5 The memory module 4 includes an EEPROM memory circuit of the I2C interface and a NOR Flash memory circuit of the SPI interface.

[0047] As shown in Figure 6As shown, CAN module 5 includes a CAN interface circuit and a CAN transceiver circuit.

[0048] like Figure 7 As shown, the Ethernet transceiver module 6 includes an RJ45 interface circuit, an external active crystal oscillator circuit, a hardware configuration circuit, an LED indicator circuit, and an Ethernet transceiver circuit.

[0049] like Figure 8 As shown, the large-capacity memory module 7 includes a NOR Flash memory circuit with an FSMC interface.

[0050] In practical applications, the HYM32F407AZGT integrated circuit development board of this utility model allows external power to enter the power module through the power interface. After passing through the first, second, and third-stage voltage conversion circuits, the power is converted into different voltages to be used by different modules. The LED indicator circuit ensures that the development board is properly connected to the power supply and displays the normal working status of the voltage conversion circuit.

[0051] The basic microcontroller system includes the MCU main control chip and peripheral circuits. The MCU main control chip downloads and debugs programs through the JATG / SW download interface circuit. The RC button reset circuit performs a system reset upon power-up. The external hardware watchdog circuit performs a system reset every 1.6 seconds. The external active crystal oscillator circuit consists of a 32.768kHz active crystal oscillator circuit and an 8MHz active crystal oscillator circuit, providing a stable and high-precision clock source for the MCU main control chip. The external precision voltage source circuit consists of a 3.0V high-precision reference chip circuit, providing a stable and high-precision voltage source for the MCU main control chip. The digital-to-analog isolation circuit consists of a ferrite bead and a filter capacitor, isolating the digital and analog circuits for the MCU main control chip. The BOOT configuration circuit performs startup configuration for the MCU main control chip. The LED indicator circuit and the KEY tactile button circuit are controlled by the MCU main control chip, providing verification conditions for pin output and input verification.

[0052] The USB to USART serial port module connects to the MCU main control chip via UART. Its function is to enable data exchange between the MCU main control chip and external devices such as computers, and at the same time, it can verify the serial communication function of the MCU main control chip.

[0053] The memory module includes EEPROM and NOR Flash memory circuits. The EEPROM memory circuit connects to the MCU main control chip via an I2C interface, while the NOR Flash memory module connects to the MCU main control chip via an SPI interface. The memory module provides the MCU main control chip with larger storage space and also provides verification conditions for SPI and I2C communication verification.

[0054] The CAN module comprises a CAN interface circuit and a CAN transceiver circuit, the CAN transceiver is connected with the MCU master chip in a CAN bus connection mode, and the CAN transceiver circuit converts a CAN signal from an external device into a signal recognizable by the MCU.

[0055] The Ethernet transceiver module comprises an Ethernet transceiver circuit, an RJ45 interface circuit, an LED indicator circuit, a hardware configuration circuit and an external active crystal circuit. The Ethernet transceiver is connected with the MCU master chip in an MII connection mode, the RJ45 interface is connected with an external device network, and the Ethernet transceiver is used to realize network connection with the external device. The module provides a condition for network function verification.

[0056] The large-capacity memory module comprises a NOR Flash memory circuit of an FSMC interface, is connected with the MCU master chip in an FSMC connection mode, and the MCU can read and write data and store data through the FSMC communication mode. The module provides a verification condition for the FSMC communication function.

[0057] Thus, the power module provides stable working voltages for different external function modules, the MCU basic system and various external modules are connected in different modes, and complete test conditions are provided for various functions.

[0058] Further, in the MCU basic system, the placement of the filter capacitor follows the nearest principle, a filter capacitor is connected near each power supply pin, and an additional 4.7uf capacitor is connected near a power supply input pin. The voltage output end of the external precision voltage source circuit and the VREF pin of the MCU master chip are connected with a wire width of 0.5mm and a length controlled within 5cm, thereby reducing voltage loss and external interference and ensuring that a stable and high-precision reference voltage is received.

[0059] Further, the input protection circuit of the power module is composed of a self-recovery fuse, a bidirectional TVS tube and a large-capacity filter capacitor. The self-recovery fuse and the TVS are placed near the power input interface, and the PCB wire width of the power input end is not less than 1.5mm, thereby ensuring that the limit carrying current meets the requirements. The power supply wire follows the principle of passing through a large capacitor first and then a small capacitor, thereby ensuring that the power supply is stably input into the voltage conversion circuit.

[0060] Further, the components of the first voltage conversion circuit are evenly distributed to ensure that the VOS pin of the DCDC chip in the voltage conversion circuit and the voltage feedback loop composed of the inductance output voltage end are the shortest, and the FB pin and the voltage modulation resistor should also be as short as possible.

[0061] Further, the PCB trace width of the power output end of each voltage conversion circuit is not less than 1.2MM, thereby ensuring that the limit bearing current meets the requirements, and the power trace principle follows the principle of first passing through a large capacitor and then passing through a small capacitor, thereby ensuring stable output voltage.

[0062] Further, the USB to USART serial port module includes a USART serial port conversion chip circuit and a USB interface circuit, and the USB interface circuit includes a T-ypeC interface circuit and a USB A slave interface circuit.

[0063] The data transmission lines DP- and DP+ between the USART serial port conversion chip circuit and the T-ypeC are impedance controlled by using equal-length differential lines, and the impedance control is set to 90R to ensure complete USB2.0 signal transmission.

[0064] The data transmission lines USB_DM and USB_DP between the USB slave interface and the MCU master chip are impedance controlled by using equal-length differential lines, and the impedance is set to 90R to ensure complete signal transmission, and both data lines are connected in series with a 22R resistor to prevent signal reflection.

[0065] Further, the Ethernet transceiver module includes an Ethernet transceiver circuit, a hardware configuration circuit, an LED indicator lamp circuit, an external active crystal oscillator circuit, and an RJ45 interface circuit.

[0066] The data lines MDI[0] and MDI[1] between the Ethernet transceiver circuit and the RJ45 interface circuit are impedance controlled by using equal-length differential lines, and the impedance control is set to 90R, and the PCB trace length should be as short as possible. No copper is laid under the RJ45 interface to prevent signal interference and external lightning strikes.

[0067] The data lines for data interaction between the Ethernet transceiver and the MCU are connected in series with a 33R resistor to prevent signal reflection. The data transmission end resistor of the Ethernet transceiver is placed close to the data reception end pin, and the data reception end pin resistor is placed close to the data transmission end pin. The data reception group RX[3:0] and the reception clock line RX_CLK use equal-length traces, and the relative error is set to 5%, and the reception clock line RX_CLK is used as the equal-length reference line of the data reception group RX[3:0]. The data transmission group TX[3:0] and the transmission clock line TX_CLK use equal-length traces, and the relative error is set to 5%, and the transmission clock line TX_CLK is used as the equal-length reference line of the data transmission group TX[3:0].

[0068] Obviously, the above embodiments are only examples for clear illustration, and are not limitations on the embodiments.

[0069] Many modifications and variations of the described implementations are possible, as will be apparent to those of ordinary skill in the relevant art. The implementations described herein are not intended to limit the claims that may be presented by subsequent filings, but rather, this description serves all applicants and reactors measured to further define their right under the patent statutes and regulations.

Claims

1. A HYM32F407AZGT-based integrated circuit development board, characterized in that, The single-chip microcomputer basic system comprises an MCU master control chip, a filter capacitor, a JATG / SW download interface circuit, an RC key reset circuit, an external hardware watchdog circuit, an external active crystal oscillator circuit, an external precision voltage source circuit, a digital-analog isolation circuit and a BOOT configuration circuit, and is further provided with an LED indicator light, a KEY touch key and a pin lead-out row pin. The USB-to-USART serial port module comprises a USB input interface and a USART serial port conversion chip circuit. The memory module comprises an EEPROM memory circuit with an I2C interface and a NOR Flash memory circuit with an SPI interface. The CAN module comprises a CAN interface circuit and a CAN transceiver circuit. The Ethernet transceiver module comprises an RJ45 interface circuit, an external active crystal oscillator circuit, a hardware configuration circuit, an LED indicator light circuit and an Ethernet transceiver circuit. The large-capacity memory module comprises a NOR Flash memory circuit with an FSMC interface. The power module is connected to the single-chip microcomputer basic system, the USB-to-USART serial port module, the memory module, the CAN module, the Ethernet transceiver module and the large-capacity memory module.

2. The HYM32F407AZGT-based integrated circuit development board according to claim 1, wherein, The power module comprises a power interface circuit, an input protection circuit, a primary voltage conversion circuit, a secondary voltage conversion circuit, a tertiary voltage conversion circuit and an LED indicator light circuit.

3. The HYM32F407AZGT-based integrated circuit development board according to claim 2, wherein, The input protection circuit comprises a self-resetting fuse, a bidirectional TVS tube and a large-capacity filter capacitor, the self-resetting fuse and the bidirectional TVS tube are placed close to the power input interface, the power input end PCB wiring width is not less than 1.5 mm, and the power wiring follows the sequence of passing through a large capacitor and then a small capacitor.

4. The HYM32F407AZGT-based integrated circuit development board according to claim 3, characterized in that, The USB-to-USART serial port module comprises a USART serial port conversion chip circuit and a USB interface circuit, the USB interface circuit comprises a T-ypeC interface circuit and a USBA slave interface circuit.

5. The HYM32F407AZGT-based integrated circuit development board according to any one of claims 1 to 4, characterized in that, The data transmission lines DP- and DP+ between the USART serial port conversion chip circuit and the T-ypeC adopt equal-length differential lines for impedance control, and the impedance control is set to 90R. 6.The HYM32F407AZGT-based integrated circuit development board according to claim 5, wherein, The data transmission lines USB_DM and USB_DP between the USBA slave interface and the MCU master control chip adopt equal-length differential lines for impedance control, and the impedance is set to 90R, and both data lines are connected in series with a 22R resistor. The Ethernet transceiver module comprises an Ethernet transceiver circuit, a hardware configuration circuit, an LED indicator light circuit, an external active crystal oscillator circuit and an RJ45 interface circuit, the data lines MDI[0] and MDI[1] between the Ethernet transceiver circuit and the RJ45 interface circuit adopt equal-length differential lines for impedance control, and the impedance control is 90R.

7. The HYM32F407AZGT-based integrated circuit development board according to claim 1, wherein, ​ 8.The HYM32F407AZGT-based integrated circuit development board according to claim 7, wherein, The data line for data interaction between the Ethernet transceiver circuit and the MCU master chip is connected in series with a 33R resistor to prevent signal reflection. 9.The HYM32F407AZGT-based integrated circuit development board according to claim 1, wherein, The data sending end resistor of the Ethernet transceiver circuit is placed close to a data receiving end pin, and the data receiving end pin resistor is placed close to a data transmitting end pin.

10. The HYM32F407AZGT-based integrated circuit development board according to claim 1, wherein, The data receiving group RX[3:0] and the receiving clock line RX_CLK adopt equal-length wiring, with a relative error of 5%, and the receiving clock line RX_CLK serves as the equal-length reference line of the data receiving group RX[3:0]; the data transmitting group TX[3:0] and the transmitting clock line TX_CLK adopt equal-length wiring, with a relative error of 5%, and the transmitting clock line TX_CLK serves as the equal-length reference line of the data transmitting group TX[3:0].

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