STMicroelectronics STM804
The STM690/704/795/802/804/805/806 supervisors are self-contained devices which provide microprocessor supervisory functions with the ability to non-volatize and writeprotect external LPSRAM. When an invalid VCC condition occurs, the reset output (RST) is forced low (or high in the case of RST). These devices also offer a watchdog timer (except for STM704/795/806) as well as a power-fail comparator (except for STM795) to provide the system with an early warning of impending power failure.| Part No. | STM804 |
|---|---|
| Datasheet | STM804 Download |
| Manufacturer |  STMicroelectronics |
| Description | 3V supervisor |
| Buy | Stock & Price |
FEATURES
● RST or RST outputs● NVRAM supervisor for external LPSRAM
● Chip enable gating (STM795 only) for external LPSRAM (7 ns max prop delay)
● Manual (push-button) reset input
● 200 ms (typ) trec
● Watchdog timer - 1.6 s (typ)
● Automatic battery switchover Table 1. Device summary Watchdog Active- low Active- high Input RST (1) RST (1) Manual reset input Battery Power-fail Chip enable switchover comparator gating STM690T/S/R √ √ √ √ STM704T/S/R √ STM795T/S/R √ (2) √ √ √ √ √ STM802T/S/R √ STM804T/S/R √ STM805T/S/R √ √ √ (2) √ (2) √ √ √ √ √ √ STM806T/S/R √ √ √ √ 1. All RST outputs push-pull (unless otherwise noted). 2. Open drain output. March 2024 This is information on a product in full production. DocID10519 Rev 10 1/43
DESCRIPTION
STM690, STM704, STM795, STM802, STM804, STM805, STM806 1DESCRIPTION
A precision voltage reference and comparator monitors the VCC input for an out-of-tolerance condition. These devices are available in a standard 8-pin SO8 package or a space-saving 8-pin MiniSO8 package.
