资料介绍
The TC32M is a fully-integrated processor supervisor
in a 3-pin package. It provides three important functions
to safeguard processor sanity: precision power
on/off Reset control, Watchdog Timer and external
Reset override.
On power-up, the TC32M holds the processor in the
Reset state for a minimum of 500 msec after VDD is
within tolerance to ensure a stable system start-up.
Microprocessor sanity is monitored by the on-board
Watchdog circuit. The microprocessor must provide a
high-to-low level shift (through an external resistor
divider) on the RS pin of the TC32M. Should the
processor fail to supply this signal within the specified
time-out period (typically 700 msec), an out-of-control
processor is indicated and the TC32M issues a
processor Reset as a result.
The output of the TC32M can be wire-ORed with a
push-button switch (or electronic signal) to override the
TC32M and unconditionally reset the processor. When
connected to a push-button switch, the TC32M
provides contact debounce.
The TC32M is packaged in a space-saving TO-92 or
SOT-223 package. It provides all of the functionality of
the industry standard TC1232 in a smaller, lower cost
configuration.
in a 3-pin package. It provides three important functions
to safeguard processor sanity: precision power
on/off Reset control, Watchdog Timer and external
Reset override.
On power-up, the TC32M holds the processor in the
Reset state for a minimum of 500 msec after VDD is
within tolerance to ensure a stable system start-up.
Microprocessor sanity is monitored by the on-board
Watchdog circuit. The microprocessor must provide a
high-to-low level shift (through an external resistor
divider) on the RS pin of the TC32M. Should the
processor fail to supply this signal within the specified
time-out period (typically 700 msec), an out-of-control
processor is indicated and the TC32M issues a
processor Reset as a result.
The output of the TC32M can be wire-ORed with a
push-button switch (or electronic signal) to override the
TC32M and unconditionally reset the processor. When
connected to a push-button switch, the TC32M
provides contact debounce.
The TC32M is packaged in a space-saving TO-92 or
SOT-223 package. It provides all of the functionality of
the industry standard TC1232 in a smaller, lower cost
configuration.
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