Datasheet

Section 17 EEPROM
Rev. 6.00 Mar. 24, 2006 Page 297 of 412
REJ09B0142-0600
SCL
SDA
112345678
D7 D0 D7 D0
98918
9
R/W ACK ACK ACK
Start
condition
Stop
conditon
[Legend]
R/W: R/W code (0 is for a write and 1 is for a read)
ACK: acknowledge
Read DataRead DataSlave address
····
Figure 17.7 Sequential Read Operation (when current address read is used)
17.5 Usage Notes
17.5.1 Data Protection at V
CC
On/Off
When V
CC
is turned on or off, the data might be destroyed by malfunction. Be careful of the
notices described below to prevent the data to be destroyed.
1. SCL and SDA should be fixed to V
CC
or V
SS
during V
CC
on/off.
2. V
CC
should be turned off after the EEPROM is placed in a standby state.
3. When V
CC
is turned on from the intermediate level, malfunction is caused, so V
CC
should be
turned on from the ground level (V
SS
).
4. V
CC
turn on speed should be longer than 10 us.
17.5.2 Write/Erase Endurance
The endurance is 10
5
cycles/page (1% cumulative failure rate) in case of page programming and
10
4
cycles/byte in case of byte programming. The data retention time is more than 10 years when a
device is page-programmed less than 10
4
cycles.