DS1233M

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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.

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

Vcc TOLERANCE

AND BIAS

T.C. REFERENCE

350 ms

DELAY

GROUND

RST

5K

Ω

APPLICATION EXAMPLE Figure 2

VCC

MICROPROCESSOR

RST

RESET

DS1233M