The product is a 3.0V/3.3V low power microprocessor supervisory with battery switch-over that integrates a myriad of components involved in discrete solutions to monitor power-supply and battery-control functions in µP and digital systems. It features a watchdog timer, a µP reset and backup- battery switchover, and power-failure warning; a complete µP monitoring and watchdog solution.
The SP690T/S/R, SP802T/S/R, SP804T/S/R and SP805T/S/R family are low‑power microprocessor supervisory circuits that provide reset, watchdog, battery‑switch‑over and power‑fail monitoring for 3.0 V or 3.3 V systems. They are intended for portable electronics, computers, controllers and intelligent instruments where reliable power‑supply monitoring is critical.
The datasheet lists electrical characteristics such as operating voltage range, reset timeout, watchdog timeout, supply currents, and output voltage levels. It also includes a pinout diagram, internal block diagram, typical temperature characteristics, and ordering information for 8‑pin SOIC and DIP packages.
| Operating Voltage Range | 1.0 V to 5.5 V |
|---|---|
| Reset Timeout Period | 140 ms – 200 ms – 280 ms |
| Watchdog Timeout | 1.12 s – 1.60 s – 2.24 s |
| Supply Current (Normal Mode) | 25 µA – 40 µA |
| Battery Supply Current | 20 µA – 40 µA |
| RESET Output Voltage | 0.06 V – 0.30 V |
| Package Types | 8‑pin SOIC and DIP |
The devices operate from 1.0 V up to 5.5 V.
The reset timeout can be set to 140 ms, 200 ms, or 280 ms.
The watchdog timeout ranges from 1.12 s to 2.24 s.
They are offered in 8‑pin SOIC and DIP packages.