AT88SC0104CA-PU_11 데이터 시트보기 (PDF) - Atmel Corporation

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AT88SC0104CA-PU_11

CryptoMemory

Atmel Corporation 

5.2 Memory Reset

After an interruption in communication due protocol errors, power loss or any reason, perform "Acknowledge Polling" to

properly recover from the condition. Acknowledge polling consists of sending a start condition followed by a valid

CryptoMemory command byte and determining if the device responded with an acknowledge.

Figure 5-1. Bus Time for Two-wire Serial Communications

SCL: Serial Clock, SDA: Serial Data I/O

tF

tHIGH

tR

SCL

tLOW

tLOW

SDA IN

tSU.STA

tHD.STA

tHD.DAT

tSU.DAT

tSU.STO

tAA

tDH

tBUF

SDA OUT

Figure 5-2. Write Cycle Timing

SCL: Serial Clock, SDA: Serial Data I/O

SCL

SDA

8th BIT

ACK

WORDn

STOP

CONDITION

(1)

twr

START

CONDITION

Note:

The write cycle time twr is the time from a valid stop condition of a write sequence to the end of the internal

clear/write cycle

Atmel AT88SC0104CA [SUMMARY DATASHEET]

7

5200FS−CRYPTO−12/11

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