WM2633
Production Data
PIN CONFIGURATION
D2
D3
D4
D5
D6
D7
A1
A0
1
2
3
4
5
6
7
8
20
19
18
17
16
15
14
13
D1
D0
NCS
NWE
NLDAC
NPD
AGND
OUT
SPD
9
12
11
REF
DVDD
10
AVDD
PIN DESCRIPTION
PIN NO
NAME
D2
TYPE
DESCRIPTION
1
2
Digital input
Digital input
Digital input
Digital input
Digital input
Digital input
Digital input
Digital input
Digital input
Supply
Data input.
D3
Data input.
3
D4
Data input.
4
D5
Data input.
5
D6
Data input.
6
D7
Data input.
7
A1
Address input.
8
A0
Address input.
9
SPD
DVDD
AVDD
REF
OUT
GND
NPD
Speed select. Digital input.
Digital positive power supply.
Analogue positive power supply.
Analogue reference voltage input/output.
10
11
12
13
14
15
Supply
Analogue I/O
Analogue output DAC analogue voltage output.
Supply
Ground.
Digital input
Power down. Active low digital input which powers down all analogue
circuits.
16
NLDAC
Digital input
Load DAC. Digital input active low. NLDAC must be taken low to update
the DAC latch from the holding latches.
17
18
19
20
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.
D1
Data input.
WOLFSON MICROELECTRONICS LTD
PD Rev 1.0 July 1999
2
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
