CAT1024, CAT1025
PIN DESCRIPTION
爐爐爐爐爐爐
RESET/RESET:
RESET OUTPUTs
(RESET CAT1025 Only)
爐爐爐爐爐爐
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
爐爐爐爐爐爐
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.
爐爐爐:
MANUAL RESET INPUT
MR
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 爐爐爐 input is
MR
low and for the reset timeout period after 爐爐爐 returns
MR
to high. The input has an internal pull up resistor.
WP (CAT1025 Only):
WRITE PROTECT INPUT
When WP input is tied to V
SS
or left unconnected write
operations to the entire array are allowed. When tied
to V
CC
, the entire array is protected. This input has an
internal pull down resistor.
PIN FUNCTION
Pin
Name
NC
爐爐爐爐爐爐
RESET
V
SS
SDA
SCL
RESET
V
CC
WP
爐爐爐
MR
Function
No Connect
Active Low Reset Input/Output
Ground
Serial Data/Address
Clock Input
Active High Reset Output
(CAT1025 only)
Power Supply
Write Protect (CAT1025 only)
Manual Reset Input
OPERATING TEMPERATURE RANGE
Industrial
Extended
-40潞C to 85潞C
-40潞C to 125潞C
CAT10XX FAMILY OVERVIEW
Device
CAT1021
CAT1022
CAT1023
CAT1024
CAT1025
CAT1026
Manual
Reset
Input Pin
Watchdog
Watchdog
Monitor
Pin
SDA
SDA
WDI
Write
Protection
Pin
Independent
Auxiliary
Voltage Sense
RESET:
Active High
and LOW
EEPROM
2k
2k
2k
2k
2k
2k
CAT1027
WDI
2k
For supervisory circuits with embedded 16k EEPROM, please refer to the CAT1161, CAT1162 and CAT1163
data sheets.
漏 2007 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
3
Doc. No. 3008 Rev. N