HD66137 Datasheet, PDF (3/19 Pages) Hitachi Semiconductor – High-Voltage Durable 240-Channel Common Driver for Dot-Matrix STN LCD

Block Diagram
HD66137T
*2, *3
VHL
VLL
VML
*1, *3
VLCDL,R
VEEL,R
VCC
GND
X1—X240
LCD drive circuit
Level shifter
Level
shifter
Shift register
D
Q
SR SR
1 20
Qφ φ D
Shift register
D
Q
SR SR
21 40
Qφ φ D
Shift register
D
Q
SR SR
41 200
Qφ φ D
Shift register
D
Q
SR SR
201 220
Qφ φ D
Shift register
D
Q
SR SR
221 240
Qφ φ D
VHR
VLR
VMR
DISPOFF
M/S
Switch circuit
Logic
Alternating signal
generating circuit
MWS 0 to MWS 4
*1 VLCDL and VLCDR, and VEEL and VEER are internally connected.
*2 VHL and VHR, VLL and VLR, and VML and VMR are internally connected.
3