The TC1232 is a fully-integrated processor supervisor that provides three important functions to safeguard processor sanity: precision power on/off reset control, watchdog timer and external reset override. It has an adjustable voltage monitor and watchdog timer, and does not require external components. It ensures that the processor remains in the reset state for 250 milliseconds after a stable system startup. It also monitors the normal operation of the processor and issues a reset signal when the processor is out of control. When the PB input is brought low by an external push button switch or other electronic signal, the outputs of the TC1232 are immediately driven active.
The TC1232 is a fully‑integrated processor supervisor that provides precision power‑on/off reset control, a watchdog timer, and an external reset override. It monitors the processor’s power supply and forces a reset if voltage or watchdog conditions are violated.
The document lists the device’s electrical specifications, pin descriptions, timing diagrams, and typical performance curves for the 8‑pin PDIP, 8‑pin SOIC, and 16‑pin SOIC packages. It also includes information on push‑button reset input behavior and code‑protection notes.
| Supply Voltage (Vcco) | 4.0 V – 5.5 V |
|---|---|
| Reset Pulse Width (minimum) | 250 ms |
| Watchdog Timer Options | 150 ms, 600 ms, 1.2 s |
| Input High Level (ST, PB RST) | ≥ 2.0 V |
| Input Low Level (ST, PB RST) | ≤ 0.3 V |
| Operating Temperature Range (E‑Version) | -40 °C – +85 °C |
| Storage Temperature Range | -65 °C – +150 °C |
The TC1232 requires a minimum reset pulse width of 250 ms.
The selectable watchdog timer periods are 150 ms, 600 ms, or 1.2 seconds.
The device operates from 4.0 V to 5.5 V supply voltage.