3

CAT1024, CAT1025

Doc No. 3008, Rev. M

PIN DESCRIPTION

RESET/

RESET

RESET

RESET

RESET

RESET:

RESET OUTPUTS

(RESET CAT1025 Only)

These are open drain pins and

RESET can be used as a

manual reset trigger input. By forcing a reset condition on

the pin the device will initiate and maintain a reset condition.

The RESET pin must be connected through a pull-down

resistor, and the

RESET pin must be connected through a

pull-up resistor.

SDA:

SERIAL DATA ADDRESS

The bidirectional serial data/address pin is used to transfer

all data into and out of the device. The SDA pin is an open

drain output and can be wire-ORed with other open drain

or open collector outputs.

SCL:

SERIAL CLOCK

Serial clock input.

MR:

MR:

MR:

MR:

MR:

MANUAL RESET INPUT

Manual Reset input is a debounced input that can be

connected to an external source for Manual Reset.

Pulling the MR input low will generate a Reset condition.

Reset outputs are active while

MR input is low and for

the reset timeout period after

MR returns to high. The

input has an internal pull-up resistor.

WP (CAT1025 Only):

WRITE PROTECT INPUT

When tied to V

to the entire array are allowed. When tied to V

entire array is protected. This input has an internal pull

down resistor.

CAT10XX FAMILY OVERVIEW

For supervisory circuits with embedded 16k EEPROM, please refer to the CAT1161, CAT1162 and CAT1163

data sheets.

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