STR-DH720/DH720HP
47
IC152 PT6315 (DISPLAY BOARD)
1
2
3
4
5
4-bit latch
24-bit output latch
12-bit shift register
Data selector
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Serial
interface
OSC
Timing generator
key scan
Display memory
24 bits x 12 words
Key data memory
(2 x 16 bits)
Command decoder
segment driver
Grid driver
Multiplexed driver
39
40
41
42
43
44
SW1
SW2
SW3
SW4
OSC
DOUT
DIN
CLK
STB
KEY1
KEY2
VSS
VDD
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
GRID9
GRID8
GRID7
GRID6
GRID5
GRID4
GRID3
GRID2
GRID1
VDD
VSS
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
VEE
SEG17
GRID11
GRID10