AT88SC0808CA-SH ATMEL [ATMEL Corporation], AT88SC0808CA-SH Datasheet - Page 7

• Manufacturer Part Number: AT88SC0808CA-SH
• Description: Atmel CryptoMemory
• Manufacturer: ATMEL [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
SDA OUT
Figure 5-2. Write Cycle Timing
SCL: Serial Clock, SDA: Serial Data I/O
SDA
Note:
SCL
SDA IN
SCL
WORDn
The write cycle time t
clear/write cycle
t
8th BIT
SU.STA
ACK
WR
t
HD.STA
is the time from a valid stop condition of a write sequence to the end of the internal
t
t
F
LOW
t
AA
CONDITION
STOP
t
HIGH
t
HD.DAT
Atmel AT88SC0808CA [Summary DATASHEET]
t
LOW
t
wr
(1)
t
t
SU.DAT
DH
CONDITION
START
5204FS−CRYPTO−12/11
t
R
t
SU.STO
t
BUF
7