PT7M1233 Datasheet, PDF (1/7 Pages) Pericom Semiconductor Corporation – Supervisory Circuit

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Features
 High accurate: 1.5% (25°C)
 Operating voltage range: 1.0V ~ 5.5V
 Operating temperature range: -40°C to + 85°C
 Detect voltage temperature characteristics: 2.5%
 TYP
 Output configuration: Bi-dir
 Reset timeout period: typical 200ms
Pin Configuration
PT7M1233/1233A
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Supervisory Circuit
Description
The PT7M1233/1233A series are designed to monitor
power supplies in µP and digital systems. They
provide excellent circuit reliability and low cost by
eliminating external components and adjustments.
The devices perform a single function: assert a reset
signal whenever the V_CC supply voltage falls below a
preset threshold. Reset remains asserted 200ms after
V_CC has risen above the reset threshold.
PT7M1233/1233A are bidirectional output, allowing it
to monitor a pushbutton on the reset output.
Pin Description
Name Type
Description
RST
I/O
Reset Output and Pushbutton Input: RST is asserted when V_CC drops below voltage threshold V_TH-. Active
low. When other devices pull RST low, the reset condition occurs and will remain a reset timeout period at
least 200ms.
GND P Ground
VCC P Supply Voltage.
2013-06-0001
PT0195-4 06/17/13
1