ISL95310

FN8083 Rev 1.00

Page 2 of 9

August 27, 2015

Block Diagram

7-BIT

UP/DOWN

COUNTER

7-BIT

NONVOLATILE

MEMORY

STORE AND

RECALL

CONTROL

CIRCUITRY

ONE

OF

128

DECODER

RESISTOR

ARRAY

U/D

INC

CS

TRANSFER

GATES

CONTROL

AND

MEMORY

Up/Down

(U/D)

Increment

(INC)

Device Select

(CS)

V+

GND

SIMPLE BLOCK DIAGRAM

DETAILED BLOCK DIAGRAM

0

1

2

124

125

126

127

VCC

Pin Descriptions

PIN NUMBER

SYMBOL

DESCRIPTION

1U/D

Controls the direction of wiper movement and whether the counter is incremented or decremented

2

GND

Ground

Positive logic supply voltage

4CS

Chip select; the device is selected when the CS input is LOW; also used to initiate a nonvolatile store

5

NC

No connect; pin is to be left unconnected

6RH

A fixed terminal for one end of the potentiometer resistor

7RW

The wiper terminal which is equivalent to the movable terminal of a potentiometer

8RL

A fixed terminal for one end of the potentiometer resistor

9

V+

Positive bias voltage for the potentiometer wiper control

10

INC

Increment input; negative edge triggered