LH1691
PIN DESCRIPTION
PIN NO.
SYMBOL
I/O
1 to 240 OG1-OG240
O
241, 258
VDD
–
242, 257
VEE
–
243, 256
VSS
–
244, 255
VCC
–
245, 254
VLS
–
246, 247 MODE2, MODE1
I
248
R/L
I
249
CE
I
250
SPV
I
251
CKV
I
252, 253 TEST2, TEST1 I
BLOCK DIAGRAM
DESCRIPTION
LCD drive output pins
Power supply pins for LCD drive
Power supply pins for LCD drive
Power supply pins for logic system
Power supply pins for logic system
Power supply pins for input level shifter
Output mode selection pins
Pin for selecting bi-directional shift register and setting cascade
sequence
Cascade sequence setting pin
Vertical scanning start pulse input pin
Vertical shift clock input pin
IC test pins
MODE2 246
MODE1 247
R/L 248
CE 249
SPV 250
CKV 251
TEST2 252
TEST1 253
CONTROL
LOGIC
BI-DIRECTIONAL SHIFT
REGISTER
1
240
LEVEL SHIFTER
1
240
OUTPUT CIRCUIT
1
240
241 258 245 254 244 255 242 257 243 256
VDD VDD VLS VLS VCC VCC VEE VEE VSS VSS
1
OG1
240
OG240
2