MB88141A Datasheet, PDF (4/22 Pages) Fujitsu Component Limited. – D/A Converter for Digital Tuning (Compatible with I2C Bus)

MB88141A
s PIN DESCRIPTION
Pin no. Symbol Circuit Type I/O
Description
21
SDA
C
I/O
I²C bus data input/output pin (hysteresis input).
Outputs the acknowledge signal.
20
SCL
B
I I²C bus shift clock input pin (hysteresis input) .
19
MOD
D/A converter and I/O expander mode switching pin. *^1, *²
A
I Input “L” to operate as a D/A converter, “H” to operate as I/O
expander and D/A converter.
16
CS0
17
CS1
18
CS2
These pins set the lower 3 bits of the slave address. *¹
A
I This allows up to eight MB88141A chips to be used on the same
bus line.
1
AO1
2
AO2
3
AO3
4
AO4
D
O 8-bit D/A outputs with OP Amp. *²
5
AO5/D7
6
AO6/D6
7
AO7/D5
8
AO8/D4
9
AO9/D3
10
AO10/D2
E
8-bit D/A outputs with OP Amp. *²
I/O In I/O expander operation, these pins function as parallel data in-
put/output pins.
11
AO11/D1
12
AO12/D0
13
VCC Power supply  Power supply pin for digital circuits and OP Amp.
24
GND
GND
 GND pin for digital circuits and OP Amp.
22
VDD1 Power supply  Reference power supply pin for D/A converter (H) . AO1 to AO4.
23
VSS1 Power supply  Reference power supply pin for D/A converter (L) . AO1 to AO4.
15
VDD2 Power supply  Reference power supply pin for D/A converter (H) . AO5 to AO12.
14
VSS2 Power supply  Reference power supply pin for D/A converter (L) . AO5 to AO12.
*1: The MOD and CS0-CS2 pins should be used with fixed level input.
*2: When using the I/O expander function together with the D/A converter function, take care that D/A converter
output precision is within a range that will not affect overall system operation.
4