WM2639
Production Data
PIN CONFIGURATION
1
2
3
4
5
6
7
8
20
19
18
17
16
15
14
13
D2
D3
D4
D5
D6
D1
D0
NCS
NWE
NLDAC
D7
D8
D9
REG
AGND
OUT
9
12
11
D10
D11
REF
VDD
10
PIN DESCRIPTION
PIN NO
NAME
D2
TYPE
Digital input
Digital input
Digital input
Digital input
Digital input
Digital input
Digital input
Digital input
Digital input
Digital input
Supply
DESCRIPTION
Data input.
1
2
D3
Data input.
D4
Data input.
3
D5
Data input.
4
D6
Data input.
5
D7
Data input.
6
D8
Data input.
7
D9
Data input.
8
D10
D11
VDD
REF
OUT
AGND
REG
NLDAC
Data input.
9
Data input.(MSB)
Positive power supply.
10
11
12
13
14
15
16
Analogue I/O
Analogue output
Supply
Analogue reference voltage input/output.
DAC analogue voltage output.
Analogue Ground.
Digital input
Digital input
Register select. Digital input used to access control register.
Load DAC. Digital input active low. NLDAC must be taken low to update
the DAC latch from the holding latches.
NWE
NCS
D0
Digital input
Digital input
Digital input
Digital input
Write enable. Digital input active low.
Chip select. Digital input active low.
Data input. (LSB)
17
18
19
20
D1
Data input.
WOLFSON MICROELECTRONICS LTD
Production Data Rev 1.0 July 1999
2
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
