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ATECC608A Datasheet(PDF) 29 Page - Microchip Technology |
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ATECC608A Datasheet(HTML) 29 Page - Microchip Technology |
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29 / 81 page  Table 5-3. Input Parameters Count Opcode (1 Byte) Mode (1 Byte) KeyID (2 Bytes) Description 0x24 0x00 0x00 00 Reads the value of Counter[0] 0x00 01 Reads the value of Counter[1] 0x01 0x00 00 Increments the value of Counter[0] 0x00 01 Increments the value of Counter[1] Table 5-4. Output Response Count Name Size Description Count 4 bytes Counter value in binary if the command succeeds. Response 1 byte Error code if the command fails. 5.1.2 Info Command The Info command is used to read the status and state of the device. This information is useful in determining errors or to operate various commands. 5.1.2.1 Info - Revision The Revision mode of the Info command reads back the silicon revision of the ATECC608A-TNGLoRaWAN. This information is hard coded into the device. This information may or may not be the same as what is read back in the Revision bytes shown in the Configuration zone. Table 5-5. Input Parameters - Info Revision Opcode (1 Byte) Mode (1 Byte) Param (2 Bytes) Data (0 Bytes) Description 0x30 0x00 0x00 00 — Returns silicon revision Table 5-6. Output Response - Info Revision Name Response Description Response 00 00 60 vv Revision Info. 0x60 indicated ATECC608A-TNGLoRaWAN. vv is the most recent silicon version. Notice: The Output Response for the ATECC608A devices will be 0x00 0x00 0x60 0x02. The response for the ATECC608B devices will be 0x00 0x00 0x60 0x03. The device revision is the easiest way to determine which version of silicon you have. Over time the fourth byte for the ATECC608B could change if additional silicon enhancements are implemented. 5.1.2.2 Info - Device State The current status of the device is returned with the Info command in this mode. The Status bits are useful in determining the current state of the device and may be useful in determining why a given command fails or if a command can be executed. ATECC608A-TNGLoRaWAN Device Commands © 2020 Microchip Technology Inc. Complete Datasheet DS40002154B-page 29 |
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