Configuration Zone Addressing

The Configuration zone can be accessed either 4 or 32 bytes at a time. Individual bytes cannot be accessed. The Configuration zone address is a 2-byte (16-bit value). Only the lowest five bits of the address word are used in addressing of the Configuration zone. For the ATECC608A-TFLXTLS device, these addresses can only be used with the read command.

Table 1. Address Format
Byte 1: Addr[15:8] Byte 0: Addr[7:0]
Unused Unused Block Offset
Addr[15:8] Addr[7:5] Addr[4:3] Addr[2:0]
Table 2. Configuration Zone Addresses

Block #
(Addr[4:3])

Offset Value (Addr[2:0])
000 001 010 011 100 101 110 111
00 [0:3] [4:7] [8:11] [12:15] [16:19] [20:23] [24:27] [28:31]
01 [32:35] [36:39] [40:43] [44:47] [48:51] [52:55] [56:59] [60:63]
10 [64:67] [68:71] [72:75] [76:79] [80:83] [84:87] [88:91] [92:95]
11 [96:99] [100:103] [104:107] [108:111] [112:115] [116:119] [120:123] [124:127]