CAT9554 Datasheet, PDF (11/28 Pages) Catalyst Semiconductor – Catalyst Semiconductor

µP supervisory circuits
CAT809 / CAT810 / CAT811 / CAT812
3-Pin/4-Pins Microprocessor Power Supply Supervisors
Features
SUPPLY VOLTAGE
■ 6 µA power supply current
■ pin compatible with MAX809, 810, 811 and 812
■ offered in two output configurations:
- push-pull RESET, active LOW (CAT809 and CAT811)
- push-pull RESET, active HIGH (CAT810 and CAT812)
■ power supply transient immunity
■ manual reset (MR) (CAT811 / CAT812 only)
■ precision monitoring of 5.0 V, 3.3 V, 3.0 V and
2.5 V power supplies
■ reset valid down to V_CC = 1.0 V
■ custom reset threshold voltage offered
Package Information
■ 3-pin SOT23 (CAT809 / CAT810)
■ 3-pin SC70 (CAT809 / CAT810)
■ 4-pin SOT143 (CAT811 / CAT812)
MICROCONTROLLER
RESET
SIGNAL
CAT809
SUPERVISOR
CATALYST
EEPROM
MEMORY
Featured Products
ALOGEN ^FR
LEAD
F
R
E
E
TM
MANUAL CAT1232LP
RESET
PBRST VCC
TD
ST
5V
MICROCONTROLLER
I/O
TOL
GND
RESET
RESET
RESET
CAT1232LP
5 V µP Supply Voltage Monitor and µP Reset Circuit
Features
■ power-up, power-down and brownout protection
■ watchdog timer
- selectable watchdog period
- 150ms, 600ms or 1.2 sec
■ selectable reset voltage tolerance
- 5% or 10%
■ two reset outputs
- active low, open-drain reset output
- active high, push-pull reset output
■ debounced manual push-button reset
■ pin compatible with DS1232 and DS1232LP
Package Information
■ 8-pin DIP
■ 8-pin & 16-pin SOIC
■ 8-pin MSOP
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