WM2639

Production Data

WOLFSON MICROELECTRONICS LTD

Production Data Rev 1.0 July 1999

2

PIN CONFIGURATION

NCS

9

10

D10

D11

12

11

REF

VDD

20

13

14

15

16

17

18

19

D1

AGND

REG

NLDAC

NWE

D0

OUT

8

1

2

3

4

5

6

7

D9

D3

D4

D5

D6

D7

D8

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

D8

Digital input

Data input.

8

D9

Digital input

Data input.

9

D10

Digital input

Data input.

10

D11

Digital input

Data input.(MSB)

11

VDD

Supply

Positive power supply.

12

REF

Analogue I/O

Analogue reference voltage input/output.

13

OUT

Analogue output

DAC analogue voltage output.

14

AGND

Supply

Analogue Ground.

15

REG

Digital input

Register select. Digital input used to access control register.

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. (LSB)

20

D1

Digital input

Data input.