EM65570
68COM/ 98SEG 65K Color STN LCD Driver
Erase
WRITE #F4H
WRITE #A1H
WRITE #54H
// set RE FLAG 100 Æ INSTRUCTION Bank 4
// set NIB1~NIB0=01 Æ erase CV5~CV4
// set EEPROM operating mode Æ erasing; EEPROM
power is from internal V0
DELAY > 4 MS
WRITE #56H
WRITE #A0H
WRITE #54H
// wait > 4 ms to finish erasing
// set EEPROM mode Æ reserve (finish erasing)
// set NIB1~NIB0=00 Æ erase CV3~CV0
// set EEPROM operating mode Æ erasing; EEPROM
power is from internal V0
DELAY > 4 MS
WRITE #56H
WRITE #F0H
WRITE #91H
WRITE #F4H
WRITE #A1H
WRITE #50H
// wait > 4 ms to finish erasing
// set EEPROM mode Æ reserve (finish erasing)
// set RE FLAG 000 Æ INSTRUCTION Bank 0
// EM65570 reset
// set RE FLAG 100 Æ INSTRUCTION Bank 4
// 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
CV5~CV0 should be equal to 1111 after erasing
Product Specification (V1.0) 09.05.2005
• 45
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
