DS1233M Datasheet, PDF (2/4 Pages) Dallas Semiconductor – EconoReset

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_CC is detected as out-of-tolerance, as defined
by the tolerance of the part selected, the RST signal is
asserted. On power-up, RST is kept active for approxi-
mately 350 ms after the power supply has reached the
selected tolerance. This allows the power supply and
microprocessor to stabilize before RST is released.
BLOCK DIAGRAM Figure 1
V_CC
5KΩ
GROUND
Vcc TOLERANCE
AND BIAS
T.C. REFERENCE
350 ms
DELAY
RST
APPLICATION EXAMPLE Figure 2
VCC
DS1233M
RST
MICROPROCESSOR
RESET
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