DS1233M
DS1233M
EconoReset
FEATURES
PIN ASSIGNMENT
restarts microprocessor after power
DALLAS
DS1233
Econo
Reset
RST
V
CC
NC
GND
1
2
3
4
8
7
6
5
NC
NC
NC
NC
•
Automatically
failure
•
Maintains reset
for 350 ms after V
CC
returns to an
in-tolerance condition
•
Reduces need for discrete components
•
Precision
•
Low-cost
temperature-compensated voltage refer-
ence and voltage sensor
TO-92 package or surface mount 8–pin
SOIC packages available
•
Internal 5 KΩ pull-up resistor
•
Compatible with
Microprocessors
Motorola 68XXX series and HC16
1
2
3
DS1233M 8–PIN SOIC
(150 MIL)
See Mech. Drawings
Section
1
2
3
•
Pin function compatible with the Motorola MC33064,
MC34064, MC33164, and MC34164
•
Operating temperature of –40°C to +85°C
DS1233M
TO-92 Package
See Mech. Drawings
Section
PIN DESCRIPTIONS
TO–92
1
2
3
RST
V
CC
GND
– Active Low Reset Output
– Power Supply
– Ground
8–Pin SOIC
RST
V
CC
NC
GND
–
–
–
–
Active Low Reset Output
Power Supply
No Connect
Ground
DESCRIPTION
The DS1233M EconoReset uses a precision tempera-
ture compensated reference and comparator circuit to
monitor the status of the power supply (V
CC
). When an
out-of-tolerance condition is detected, an internal power
fail signal is generated which forces reset to the active
(low) state. When V
CC
returns to an in-tolerance condi-
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.
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DALLAS [ DALLAS SEMICONDUCTOR ]
