CAT1024(2004) Просмотр технического описания (PDF) - Catalyst Semiconductor => Onsemi

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CAT1024
(Rev.:2004)

Supervisory Circuits with I2C Serial 2k-bit CMOS EEPROM and Manual Reset

Catalyst Semiconductor => Onsemi 

CAT1024, CAT1025

PIN DESCRIPTION

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.

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 VSS or left unconnected write operations

to the entire array are allowed. When tied to VCC, the

entire array is protected. This input has an internal pull

down resistor.

SCL: SERIAL CLOCK

Serial clock input.

CAT10XX FAMILY OVERVIEW

Device

Manual

Reset

Input Pin

Watchdog Write

Watchdog Monitor Protection

Pin

Pin

Independent

Auxiliary

Voltage Sense

RESET: Active

High and LOW

EEPROM

CAT1021

SDA

2k

CAT1022

SDA

2k

CAT1023

WDI

2k

CAT1024

2k

CAT1025

2k

CAT1026

2k

CAT1027

WDI

2k

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

data sheets.

3

Doc No. 3008, Rev. M

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