SPI security chip and SPI electronic device
An SPI interface and security chip technology, applied in electrical digital data processing, instruments, etc., can solve the problems of large amount of security upgrade engineering, increased upgrade cost, large workload, etc., to achieve cost controllable, excellent performance, and simple security transformation. easy effect
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Embodiment 1
[0062] see Figure 10 , which is a structural schematic diagram of a SPI interface security chip of the present application;
[0063] Depend on Figure 10 It can be seen that the embodiment of the present application provides a SPI interface security chip, including:
[0064] At least one SPI slave interface 100, the SPI slave interface 100 includes an SPI chip select signal input port;
[0065] The signal gating control circuit 500 connected with any one SPI from the interface 100; the signal gating control circuit 500 is provided with one or more output ports 300; wherein the signal gating control circuit 500 is responsible for the SPI chip selection signal gating Implementation, the chip select signal 101 input by SPI from the interface 100 can be time-sharingly strobed with other multiple output port signals 301 / 302 / 303 of the chip, once it is strobed with a certain output port, the output port logic signal and The input chip select signal is followed in real time, and ...
Embodiment 2
[0079] see Figure 15 , a schematic structural diagram of a safe SPI flash memory electronic device provided by the application;
[0080] Depend on Figure 15 It can be seen that, corresponding to the above-mentioned security chip, the present application also provides a secure SPI flash memory electronic device, the electronic device comprising:
[0081] Ordinary SPI flash memory 30;
[0082] The security chip 10 provided in the foregoing embodiments, the security chip 10 and the common SPI flash memory 30 are sealed together in a packaging manner;
[0083]SPI communication interface, described SPI communication interface comprises clock port 41, data port 42 and chip select signal port 43; Wherein, described security chip 10 and common SPI flash memory 30 share clock port 41 respectively, data port 42; Described chip select The signal port 43 is connected to the security chip 10;
[0084] The output terminal of the security chip 10 is connected to the chip select signal ...
Embodiment 3
[0098] see Figure 17 , is a schematic structural diagram of a secure SPI interface composite electronic device provided by the present application;
[0099] The difference from Embodiment 2 is that the electronic device includes:
[0100] Ordinary SPI flash memory, SPI interface Wifi communication module, SPI interface Bluetooth communication module, SPI interface fingerprint module, SPI interface touch module, SPI interface real-time clock module, SPI interface display control module, SPI interface battery management module , one or any combination of SPI interface A / D converters;
[0101] The security chip and the ordinary SPI flash memory, SPI interface Wifi communication module, SPI interface Bluetooth communication module, SPI interface fingerprint module, SPI interface touch module, SPI interface real-time clock module, SPI interface display control module One or any combination of SPI interface battery management module and SPI interface A / D converter is sealed by pa...
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