Pin No.
Pin Symbol
1/0
Pin Description
1
GNDA
-
Analogue GND
2
A02
0
3
A03
0
5
A04
0
6
A05
0
7
A06
0
8-bit D/A output
8
A07
0
9
A08
0
1 0
A09
0
1 2
A01 0
0
1 3
A01 1
0
1 4
VDDA
-
Analogue power
1 5
Voo
-
Logic power
1 6
A01 2
0
8-bit D/A output
1 7
TST2
I
Test terminal 2
1 9
TST1
I
Test terminal 1
20
OUT
0
Monitor terminal
21
Do
0
LSB bit data output of 8-bit shift register
22
LOAD
I
Load pulse input terminal to load data of 8-bit shift register to latch
23
DA
Serial data input terminal
I
LSB first 8-bit data input
24
CLK
I
Shift clock input terminal. Input signal of DA terminal of 8-bit
shift register at shift clock rising.
26
cs
I
Write mode protect terminal
27
A01
0
8-bit D/A output
28
GND
-
Logic GND
Table. 2-5. IC91 1 Terminal Specifications
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