EM65570
68COM/ 98SEG 65K Color STN LCD Driver
7.20.1 EEPROM Program, Read, and Erase Flow Charts
The following are the EEPROM Program, Read and Erase flow charts for achieving
correct Vop offset voltage.
set
CV5~CV4(
up nibble
register)
select EEPROM
WR start :
(M 1,M 0) set 01
address to read
(NIB1,NIB0) set 00
set
RD start :
(M 1,M 0) set 00
delay > 4 ms
CV3~CV 0(l
ow nibble
register)
WR end:
(M 1,M 0) set 11
delay > 10 us
select EEPROM
address to program
(NIB1,NIB0) set 01
Reset
RD end:
(M 1,M 0) set 11
WR start :
(M 1,M 0) set 01
select EEPROM
address to read
(NIB1,NIB0) set 01
Get correct
Vop offset
voltage
delay > 4 ms
RD start :
(M 1,M 0) set 00
WR end:
(M 1,M 0) set 11
delay > 10 us
select EEPROM
address to program
(NIB1,NIB0) set 00
RD end:
(M 1,M 0) set 11
Figure 7-18a EEPROM Program Flow Chart
Product Specification (V1.0) 09.05.2005
• 41
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
