EM65570
68COM/ 98SEG 65K Color STN LCD Driver
Read
WRITE #F4H
WRITE #A3H
WRITE #50H
// set RE FLAG 100 Æ INSTRUCTION Bank 4
// set NIB1~NIB0=11 Æ read Extension Command
// set EEPROM operating mode Æ reading; read data
from EEPROM
DELAY >10 uS
WRITE #56H
// wait >10 uS to finish reading
// set EEPROM mode Æ reserve (finish reading data
from EEPROM
WRITE #A2H
WRITE #50H
// set NIB1~NIB0=10 Æ read Extension Command
// set EEPROM operating mode Æ reading; read data
from EEPROM
DELAY >10 uS
WRITE #56H
// wait >10 uS to finish reading
// set EEPROM mode Æ reserve (finish reading data
from EEPROM
WRITE #A1H
WRITE #50H
// set NIB1~NIB0=01 Æ read CV5~CV4
// set EEPROM operating mode Æ reading; read data
from EEPROM to the CV5~CV4 registers
DELAY >10 uS
WRITE #56H
// wait >10 uS to finish reading
// set EEPROM mode Æ reserve (finish reading data
from EEPROM to the CV5~CV4 registers)
WRITE #A0H
WRITE #50H
// set NIB1~NIB0=00 Æ read CV3~CV0
// set EEPROM operating mode Æ reading; read data
from EEPROM to the CV3~CV0 registers
DELAY >10 uS
WRITE #56H
// wait >10 uS to finish reading
// set EEPROM mode Æ reserve (finish reading data
from EEPROM to the CV3~CV0 registers)
NOTE
When reading from CV5~CV0, you must read the EEPROM data to CV5~CV4 (upper
nibble register) first, then read the EEPROM data to CV3~CV0 (lower nibble
registers).
44 •
Product Specification (V1.0) 09.05.2005
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
