WM2633

Production Data

WOLFSON MICROELECTRONICS LTD

PD Rev 1.0 July 1999

2

PIN CONFIGURATION

9

10

SPD

DVDD

12

11

REF

AVDD

20

13

14

15

16

17

18

19

D1

AGND

NPD

NLDAC

NWE

NCS

D0

OUT

8

1

2

3

4

5

6

7

A0

D3

D4

D5

D6

D7

A1

D2

PIN DESCRIPTION

PIN NO

NAME

TYPE

DESCRIPTION

1

D2

Digital input

Data input.

2

D3

Digital input

Data input.

3

D4

Digital input

Data input.

4

D5

Digital input

Data input.

5

D6

Digital input

Data input.

6

D7

Digital input

Data input.

7

A1

Digital input

Address input.

8

A0

Digital input

Address input.

9

SPD

Digital input

Speed select. Digital input.

10

DVDD

Supply

Digital positive power supply.

11

AVDD

Supply

Analogue positive power supply.

12

REF

Analogue I/O

Analogue reference voltage input/output.

13

OUT

Analogue output

DAC analogue voltage output.

14

GND

Supply

Ground.

15

NPD

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

NWE

Digital input

Write enable. Digital input active low.

18

NCS

Digital input

Chip select. Digital input active low.

19

D0

Digital input

Data input.

20

D1

Digital input

Data input.