em65570sagh ELAN Microelectronics Corp, em65570sagh Datasheet - Page 50

• Manufacturer Part Number: em65570sagh
• Description: 68com/98seg 65k Color Stn Lcd Drivers
• Manufacturer: ELAN Microelectronics Corp

EM65570S
68COM/98SEG 65K Color STN LCD Drivers
44 x
7.23 Initialization
7.24 Precaution when Setting Power ON and Power OFF
Setting RESB pin to “L” initializes the EM65570S. Normally, RESB pin is initialized
together with MPU by connecting to the reset pin of MPU. When power ON, be sure to
make RESB=”L”.
65K color mode
High current may flow if a voltage is supplied to the LCD driver power supply while the
system power supply is floating and may permanently damage this LSI. The detailed
description is as follows.
7.24.1 When Using the Built-in Power Supply
If VDD and VEE voltages aren’t same potential, power on logic system (VDD) first.
If VDD and VEE are not of the same potential, cut off VEE first. After VEE, VOUT, V0,
V1, V2, V3 and V4 voltages are below LCD ON voltage (threshold voltage for Liquid
crystal turn on), power off logic system (VDD).
Display RAM
X Address
Y Address
Display starting common
Display ON/OFF
Display Normal/Reverse
n-line alternated
(BF1,BF0)
Common shift direction
Increment mode
Data SWAP Mode
Register in electronic volume
Power Supply
Display mode
Gradation LSB
RAM access data length
Discharge Register
Procedure in Setting the Power ON
Logic system (VDD) power ON
Booster circuit system (VEE) power ON
Reset the operation, booster and voltage conversion circuit enable.
Procedure in Setting the Power OFF
Set the HALT register to “1” or make reset operation.
Set the Booster circuit system (VEE) power OFF.
Set the Logic system (VDD) power OFF.
Item
(This specification is subject to change without further notice)
Not fixed
00H set
00H set
Set at the first common (0H)
Display OFF
Normal
Every frame unit
(0, 1)
COM0
Increment OFF
OFF
OFF
65K color mode
0
8-bit mode
0
(0, 0, 0, 0, 0, 0, 0)
Product Specification (V1.0) 04.18.2006
COM67
Initial Value