DS1233M Dallas, DS1233M Datasheet

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DS1233M

Manufacturer Part Number
DS1233M
Description
EconoReset
Manufacturer
Dallas
Datasheet

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FEATURES
DESCRIPTION
The DS1233M EconoReset uses a precision tempera-
ture compensated reference and comparator circuit to
monitor the status of the power supply (V
out-of-tolerance condition is detected, an internal power
fail signal is generated which forces reset to the active
Automatically restarts microprocessor after power
failure
Maintains reset for 350 ms after V
in-tolerance condition
Reduces need for discrete components
Precision temperature-compensated voltage refer-
ence and voltage sensor
Low-cost TO-92 package or surface mount 8–pin
SOIC packages available
Internal 5 K pull-up 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
CC
CC
returns to an
). When an
PIN ASSIGNMENT
PIN DESCRIPTIONS
TO–92
1
2
3
8–Pin SOIC
RST
V
NC
GND
(low) state. When V
tion, the reset signal is kept in the active state for ap-
proximately 350 ms to allow the power supply and pro-
cessor to stabilize.
CC
See Mech. Drawings
RST
V
GND
TO-92 Package
CC
DS1233M
1
Section
1
DALLAS
DS1233
Econo
Reset
2
2 3
3
– Active Low Reset Output
– Power Supply
– Ground
– Active Low Reset Output
– Power Supply
– No Connect
– Ground
CC
returns to an in-tolerance condi-
GND
RST
V
NC
CC
DS1233M 8–PIN SOIC
See Mech. Drawings
EconoReset
(150 MIL)
1
2
3
4
Section
DS1233M
8
7
6
5
022698 1/4
DS1233M
NC
NC
NC
NC

Related parts for DS1233M

DS1233M Summary of contents

Page 1

... Microprocessors Pin function compatible with the Motorola MC33064, MC34064, MC33164, and MC34164 Operating temperature of – +85 C DESCRIPTION The DS1233M EconoReset uses a precision tempera- ture compensated reference and comparator circuit to monitor the status of the power supply (V ). When an CC out-of-tolerance condition is detected, an internal power ...

Page 2

... DS1233M OPERATION – POWER MONITOR The DS1233M provides the functions of detecting out-of-tolerance power supply conditions and warning a processor-based system of impending power failure. When V is detected as out-of-tolerance, as defined CC BLOCK DIAGRAM Figure Vcc TOLERANCE AND BIAS T.C. REFERENCE GROUND APPLICATION EXAMPLE Figure 2 ...

Page 3

... LTL TIMING DIAGRAM: POWER DOWN Figure HTL V CCTP V RST t RPD HTL V CCTP t RPU V OH MIN TYP MAX UNITS 4.75 V 4.00 V 3. LTL V OL DS1233M NOTES DS1233M–5, DS1233M–55 DS1233M–5, DS1233M–55 DS1233M–3 DS1233M–3 022698 3/4 ...

Page 4

... Output Current @ 0. Operating Current Trip Point (DS1233M– CCTP V Trip Point (DS1233M–55 CCTP V Trip Point (DS1233M– CCTP Output Capacitance C OUT Internal Pull-Up Resistor ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Reset Active Time t RST V Detect to RST ...

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