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Peripheral circuit for main control circuit

A main control circuit and peripheral circuit technology, applied in the direction of logic circuit connection/interface layout, logic circuit coupling/interface using field effect transistors, etc., can solve the problem that the switching state of the main control circuit cannot be memorized at the same time, and achieve memory retention time, consistent effect

Active Publication Date: 2016-11-23
SHANGHAI BEILING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Causes the switching state of the main control circuit to be unable to remember at the same time

Method used

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  • Peripheral circuit for main control circuit
  • Peripheral circuit for main control circuit
  • Peripheral circuit for main control circuit

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0025] See figure 2 A peripheral circuit for a main control circuit of the present invention is used in a main control circuit that can simultaneously control the working states of two branches. The main control circuit includes at least the following ports: L1 port, L2 port, GND port, I / O port, VCC port and CLK port, when any one of L1 port or L2 port is in high level state, I / O port is in high level state, and when L1 port and L2 port are in low level or the same When in the high state, the I / O port is in the low state. The GND port of the main control circuit is grounded, the gate of the first rear PMOS transistor Q1 on the first branch M1 controlled by the main control circuit is connected to the L1 port of the main control circuit through the first current limiting resistor R1, and the second branch The gate of the second rear-stage PMOS transistor Q2 on the circuit M2 is connected to the L2 port of the main control circuit through the second current limiting resistor R2...

no. 2 example

[0030] See image 3 , The peripheral circuit for a main control circuit of the present invention can be used in main control circuits such as the BL22P02 main control chip. The GND port of the main control circuit is grounded. The first branch M1 and the second branch M2 controlled by the main control circuit are correspondingly connected to the L1 port and the L2 port of the main control circuit through the first current limiting resistor R1 and the second current limiting resistor R2. On the basis of the first embodiment, a first bias resistor R5 connected to the source and gate of the first rear-stage PMOS transistor Q1 is added to the first branch M1. A second bias resistor R6 connected to the source and gate of the second rear-stage PMOS transistor Q2 is added to the second branch M2. The main control circuit switches the working states of the first branch M1 and the second branch M2 by controlling the first rear PMOS transistor Q1 and the second rear PMOS transistor Q2....

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PUM

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Abstract

The invention discloses a peripheral circuit for a master control circuit, and belongs to the field of integrated circuits. An L1 port, an L2 port, a GND port, an I / O port, a VCC port and a CLK port are arranged on the master control circuit, wherein the GND port is grounded, the L1 port is connected with a first branch M1 through a first current-limiting resistor R1, the L2 port is connected with a second branch M2 through a second current-limiting resistor R2, and the VCC port is simultaneously connected with the first branch M1 and the second branch M2. The peripheral circuit comprises a discharge capacitor C1, a direct current voltage source Vs, a current-limiting resistor R4, a diode D1 and a discharge resistor R3. The negative electrode of the discharge capacitor C1 is grounded, the positive electrode of the discharge capacitor C1 is connected with the VCC port of the master control circuit, the negative electrode of the direct current voltage source Vs is grounded, the positive electrode of the direct current voltage source Vs is connected with the positive electrode of the diode D1 through a switch K, the negative electrode of the diode D1 is connected with the VCC port of the master control circuit, one end of the current-limiting resistor R4 is connected with the positive electrode of the diode D1, the other end of the current-limiting resistor R4 is connected with the CLK port of the master control circuit, one end of the discharge resistor R3 is connected with the I / O port of the master control circuit, and the other end of the discharge resistor R3 is grounded.

Description

Technical field [0001] The invention relates to a peripheral circuit for a main control circuit in the field of integrated circuits. Background technique [0002] In the integrated circuit, the DC voltage source Vs of the main control circuit supplies power to the main control circuit and the rear PMOS tubes on the two branches controlled by the main control circuit through the peripheral circuit. The peripheral circuit switches the working state of the two branches controlled by the main control circuit by powering off the main control circuit and then powering on. [0003] See figure 1 In the prior art, the main control circuit includes at least the following ports: L1 port, L2 port, GND port, I / O port, VCC port and CLK port. The GND port is grounded, the gate of the first rear PMOS transistor Q1 on the first branch M1 controlled by the main control circuit is connected to the L1 port of the main control circuit through the first current limiting resistor R1, and the second bran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K19/0185
Inventor 姜婷
Owner SHANGHAI BEILING