ATSHA204-RBH-T Ver la hoja de datos (PDF) - Atmel Corporation
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ATSHA204-RBH-T Datasheet PDF : 81 Pages
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2.1.2.2 I2C Address
I2C
Bit 0 = Ignored
Bits 1 – 7 = I2C device address
Single-Wire:
Bits 0 – 2 = Ignored
Bit 3 = TTL Enable
0 = Input level uses a fixed reference.
1 = Input level uses VCC reference
Bits 4 – 7 = Ignored
2.1.2.3 OTP Mode
0xAA (Read-only mode) = When OTP zone is locked, writes are disabled.
0x55 (Consumption mode) = Not supported at this time. Please contact Atmel for more information.
0x00 (Legacy mode) = When OTP zone is locked, writes are disabled, reads to Words 0 and 1, and 32-byte reads are
disabled.
All other modes are reserved.
2.1.2.4 Selector Mode
0 = Selector can be updated with UpdateExtra.
All other values only allow Selector to be updated if it's value is zero.
2.1.2.5 Slot Config
See Table 2-3, SlotConfig Bits (Per Slot).
2.1.2.6 Use Flag
For uses with “single-use slots”. The quantity of “1” bits represents the number of times slots 0 – 7 may be used before
being disabled.
2.1.2.7 Update Count
Indicates how many times slots 0 – 7 have been updated with DeriveKey.
2.1.2.8 Last Key Use
Used to control limited use for Slot 15. Each “1” bit represents a remaining use for Slot 15.
2.1.2.9 UserExtra
Can be modified via the UpdateExtra command.
2.1.2.10 Selector
Selects which device will remain in active mode after the execution of the Pause command.
ATSHA204 [DATASHEET] 11
Atmel-8740H-CryptoAuth-ATSHA204-Datasheet_072014
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