HOLT INTEGRATED CIRCUITS

3

PIN

SYMBOL

FUNCTION

DESCRIPTION

1

SENSE1

2

SENSE2

3

4

5

6

8

10

11

12

13

14

VLOGIC

15

GND

16

VDD

Discrete Input

Sense input 2. Mapped

7

SENSE7

9

Discrete Input

Sense input 1. Mapped to last (eighth) SPI bit shifted out of SO during data read

to seventh SPI bit shifted out of SO during data read

SENSE3

Discrete Input

Sense input 3. Mapped to sixth SPI bit shifted out of SO during data read

SENSE4

Discrete Input

Sense input 4. Mapped to fifth SPI bit shifted out of SO during data read

SENSE5

Discrete Input

Sense input 5. Mapped to fourth SPI bit shifted out of SO during data read

SENSE6

Discrete Input

Sense input 6. Mapped to third SPI bit shifted out of SO during data read

Discrete Input

Sense input 7. Mapped to second SPI bit shifted out of SO during data read

SENSE8

Discrete Input

Sense input 8. Mapped to first SPI bit shifted out of SO during data read

SO

Digital Output

SPI Data out

SCK

Logic Input

SPI clock input. 10MHz maximum clock frequency.

Logic Input

Chip Select. SPI data transfers are enabled when

is low

SI

Logic Input

SPI Data input.

SEL

Logic Input

Register Select. SEL high selects Data register. SEL low, selects Configuration register

Supply

Logic supply voltage. 3.3V +/- 5%

Supply

Ground

Supply

Analog Supply voltage 12V to 16.5V

CS

CS

PIN DESCRIPTIONS

HI-8428-R