AT88SC0808CA-TU 查看數據表（PDF） - Atmel Corporation

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AT88SC0808CA-TU

Atmel 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

SCL

tF

tLOW

tHIGH

tLOW

SDA IN

tSU.STA

tHD.STA

tHD.DAT

tSU.DAT

tAA

tDH

SDA OUT

tR

tSU.STO

tBUF

Figure 5-2. Write Cycle Timing

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

SCL

SDA

8th BIT

ACK

Note:

WORDn

(1)

twr

STOP

CONDITION

START

CONDITION

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 AT88SC0808CA [Summary DATASHEET]

7

5204FS−CRYPTO−12/11

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