Oki PACEMARK 4410 Maintenance Manual page 17

(5) EEPROM(IC40)
The EEPROM is a CMOS serial I/O type memory which is capable of electrically erasing and
writing 1,024 bits.
The EEPROM contains menu data.
The following shows the memory access operation.
NHDC LSI
PRE = O
PE = X
EEPROMCS-P
EEPROMCLK-P
EEPROMWR-P
EEPROMRD-P
PRE = O
PE
EEPROMCS-P
EEPROMCLK-P
EEPROMWR-P
EEPROMRD-P
40496501TH Rev.1
EEPROMWR-P
DI
EEPROMCS-P
CS
EEPROMRD-P
DO
EEPROMCLK-P
SK
Read cycle timing (READ)
Operation
Start
Address
code
code
0
1 1
A5
Write cycle timing (WRITE)
Operation
Start Address
code
code
0 A5 A0
1 1
Figure 2.5
EEPROM
A0
0
D15 D0 D15
t
CS
Data
D15 D0
Bus
twp
t
CS
D0 D15
Ready
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