EM65570
68COM/ 98SEG 65K Color STN LCD Driver
Symbol
I/O
Description
Parallel/Serial interface select pin.
P/S Chip Select Data Identification
P/S
I
Data Read/Write Serial Clock
H
L
CSB
CSB
RS
RS
D0-D7 RDB, WRB
SDA Write only
-
SCL
P/S = “H”: For parallel interface.
P/S = “L”: For serial interface. Fixed D15-D5 pins are Hi-Z, RDB and WRB pins at
either “H” or “L”.
TEST
I
I
For testing. Fixed at “L”.
For testing. Fixed at “L”.
TEST1
6.4 LCD Drive Circuit Signals
Symbol
I/O
Description
Segment output pins for LCD drives.
According to the Display RAM data, non-lighted at “0”, lighted at “1” (Normal Mode);
non-lighted at “1”, lighted at “0” (Reverse Mode). Furthermore, with a combination of
the M signal and display data, one signal level (among V0, V2, V3, and VSS signal
levels) is selected.
SEGA0-A97
SEGB0-B97
SEGC0-C97
M Signal
(internal)
Display RAM
Data
O
V2
V0
V0
V3 VSS
Normal Mode
Reverse Mode
V2 VSS V3
Common output pins for LCD drivers. With a combination of the scanning data and M
signal, one signal level (among V0, V1, V4 and VSS signal levels) is selected.
Data
H
M
H
H
L
Output Level
COM0-
COM67
O
VSS
V1
L
H
V0
L
L
V4
Product Specification (V1.0) 09.05.2005
• 15
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
