DS1233M-3 查看數據表（PDF） - Dallas Semiconductor -> Maxim Integrated
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DS1233M-3 Datasheet PDF : 4 Pages
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DS1233M
EconoReset
www.maxim-ic.com
FEATURES
§ Automatically restarts microprocessor after
power failure
§ Maintains reset for 350 ms after VCC returns
to an in-tolerance condition
§ Reduces need for discrete components
§ Precision temperature-compensated voltage
reference and voltage sensor
§ Low-cost TO-92 package or surface mount
8-pin SOIC packages available
§ Internal 5 kW pullup resistor
§ Compatible with Motorola 68XXX series
and HC16 Microprocessors
§ Pin function compatible with the Motorola
MC33064, MC34064, MC33164, and
MC34164
§ Operating temperature of -40°C to +85°C
PIN ASSIGNMENT
DALLAS
DS1233
Econo
Reset
RST 1
VCC 2
NC
3
GND 4
8 NC
7 NC
6 NC
5 NC
DS1233M 8-Pin SOIC
(150mil)
See Mech. Drawings
Section on Website
123
___
123
BOTTOM VIEW
TO-92 PACKAGE
See Mech.
Drawings Section
On Website
PIN DESCRIPTIONS
TO-92
1 RST
2 VCC
3 GND
- Active Low Reset Output
- Power Supply
- Ground
8-Pin SOIC
RST
- Active Low Reset Output
VCC
- Power Supply
NC
- No Connect
GND
- Ground
DESCRIPTION
The DS1233M EconoReset uses a precision temperature-compensated reference and comparator circuit to
monitor the status of the power supply (VCC). When an out-of-tolerance condition is detected, an internal
power-fail signal is generated which forces reset to the active (low) state. When VCC returns to an
intolerance condition, the reset signal is kept in the active state for approximately 350 ms to allow the
power supply and processor to stabilize.
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