EM65571
130COM/128SEG 65K Color STN LCD Driver
Symbol
I/O
Description
TEST
I
For testing. Fix to “L”
Parallel/Serial interface select pin.
Data
P/S Chip select
Data Read/Write Serial Clock
Identification
H
L
CSB
CSB
RS
RS
D0-D7 RDB, WRB
SDA Write only
-
P/S
I
SCL
P/S = “H”: For parallel interface
P/S = “L”: For serial interface. Fix D15-D5 pins to Hi-Z, and fix RDB and
WRB pins to either “H” or “L”
6.4 LCD Drive Circuit Signals
Symbol
I/O
Description
Segment output pins for the LCD driver.
Basing on the Display RAM data, non-lighted at “0”, lighted at “1”
(Normal Mode), non-lighted at “1”, lighted at “0” (Reverse Mode) and
by a combination of M signal and display data, one signal level among
V0, V2, V3 and VSS signal level is selected.
(For Monochrome Display)
SEGA0-A127
SEGB0-B127
SEGC0-C127
O
M Signal (internal)
Display RAM
Data
V2
V0
V0
V3 VSS
Normal Mode
Reverse
Mode
V2 VSS V3
Common output pins for the LCD drivers. By a combination of the
scanning data and M signal, one signal level among V0, V1, V4 and
VSS signal level is selected.
COM0-
Data
H
M
H
H
L
Output Level
O
COM127
VSS
V1
L
H
V0
L
L
V4
Common output pin for LCD drive exclusively for icons.
Common output pin for LCD drive exclusively for icons.
COMA
COMB
O
O
16 •
Product Specification (V1.0) 08.04.2005
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
