Clear Text Read

Clear text reads are always possible from the Configuration and OTP zones of the ATECC608A-TNGTLS device. Specific slots within the Data zone may be readable as clear text based on the access policies that have been set. Either 4-byte or 32-byte reads are possible on any of these zones.

For the ATECC608A-TNGTLS device, Slots 5, 8 and 10-12 contain data that can be read as clear text.

Table 1. Input Parameters - Clear Text Read

Opcode
(1 Byte)

Mode
(1 Byte)

Address
(2 Byte)

Description
0x02 0x00 See Section Address Encoding. 4-byte Configuration zone read
0x80 See Section Address Encoding. 32-byte Configuration zone read
0x01 See Section Address Encoding. 4-byte OTP zone read
0x81 See Section Address Encoding. 32-byte OTP zone read
0x02 See Section Address Encoding. 4-byte Data zone read
0x82 See Section Address Encoding. 32-byte Data zone read
Table 2. Output Response - Clear Text Read
Name Size Description
Data Contents 4 bytes 4 bytes transmitted [0:3]
32 bytes 32 bytes transmitted [0:31]