BU9728AKV Datasheet, PDF (2/10 Pages) Rohm – LCD driver for segment-type LCDs

Standard ICs
•^{Block diagram}
RESET
SD
SCK
C/D
CS
Serial
Interface
Address
Counter
Command / Data
Register
Display Data RAM
(DD RAM)
Command
Decoder
Timing
Generator
Common
Counter
LCD Driver
Bias Circuit
LCD
Segment
Driver
32bits
LCD
Common
Driver
4bits
BU9728AKV
VDD
V1
V2
V3
VSS
SEG0
SEG1
SEG31
COM0
COM1
COM2
COM3
•^{Pin assignments}
SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
36 35 34 33 32 31 30 29 28 27 26 25
37
24
38
23
39
22
40
21
41
20
42
BU9728AKV
19
43
18
44
17
45
16
46
15
47
14
48
13
1 2 3 4 5 6 7 8 9 10 11 12
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG1
SEG0
RESET
COM3
COM2
COM1
2