LC868900/10/50/60
No.6709-5/20
Block Diagram
SCREEN 1
START ADDRESS
CURSOL ADDRESS HIGH
CURSOL ADDRESS LOW
HORIZONTAL CHARACTER
NUMBER REGISTER
HORIZONTAL
BIT REGISTER
TIMING GENERATOR
DUTY REGISTER
MODE REGISTER
DATA REGISTER
INSTRUCTION
REGISTER
OUTPUT BUFFER
DOUT
UPPER ADDRESS
RAM
(640 BYTES)
or
(1280 BYTES)
LOWER ADDRESS
DIN
DOUT
SCREEN 2
START ADDRESS
DB7
DB6
Pararell-Serial
LCD DRIVER
DB5
DB4
DB3
DB2
DB1
DB0
VSS
VDD
CL2
RS
RD
WR
RES
M
V5
V3
V2
S
S
ILC00172
Pin Description
Pin
VSS
VDD
DB0
to
DB7
RES
CS
RD
WR
RS
Pin No.
97
90
81
to
88
89
91
92
93
94
Input / Output
--
-
Input / Output
Function Description
Should be connected with the negative supply voltage pin.
Should be connected with the positive supply voltage pin.
Built-in Data bus and pull-up resistor
terminal for transmitting / receiving data to / from the MPU
Input
Input
Input
Input
Input
Reset, built-in pull-up resistor
Chip select : Selection allowed when CS=0, built-in pull-up resistor
Read signal : MPU
←
LC868900 series, built-in pull-up resistor
Write signal : MPU
→
LC868900 series, built-in pull-up resistor
Register select : RS=1 ; instruction register, RS=0 ; data register
Built-in Pull-up resistor
Signal for LCD display (clock signal), built-in pull-down resistor
Signal for LCD display (synchronization), built-in pull-up resistor
Voltage supply pins to LCD drivers
CL2
M
V2
V3
V5
S1
to
S80
95
96
98
99
100
80
to
1
Input
Input
-
-
-
Output
Segment driver pins for LCD display