STM804T/S/R 3伏的电池切换
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 write-protect external LPSRAM. A precision voltage reference and comparator monitors the VCC input for an out-of-tolerance condition. 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.
These devices are available in a standard 8-pin SOIC package or a space-saving 8-pin TSSOP package.
STM804T/S/R 技术特性:
- RST OR RST OUTPUTS
- NVRAM SUPERVISOR FOR EXTERNAL LPSRAM
- CHIP-ENABLE GATING (STM795 only) FOR EXTERNAL LPSRAM (7ns max PROP DELAY)
- MANUAL (PUSH-BUTTON) RESET INPUT
- 200ms (TYP) trec
- WATCHDOG TIMER - 1.6sec (TYP)
- AUTOMATIC BATTERY SWITCHOVER
- LOW BATTERY SUPPLY CURRENT - 0.4μA (TYP)
- POWER-FAIL COMPARATOR (PFI/PFO)
- LOW SUPPLY CURRENT - 40μA (TYP)
- GUARANTEED RST (RST) ASSERTION DOWN TO VCC = 1.0V
- OPERATING TEMPERATURE:
–40°C to 85°C (Industrial Grade)
STM804T/S/R 订购型号:
| Ordering Model | Package | General Description | RST Threshold(VPFD) | Packing Type |
| typ | ||||
| STM804RM6E | SO8 | 3V Supervisor | 2.63 | Tube |
| STM804RM6F | SO8 | 3V Supervisor | 2.63 | Tape And Reel |
| STM804SM6E | SO8 | 3V Supervisor | 2.93 | Tube |
| STM804SM6F | SO8 | 3V Supervisor | 2.93 | Tape And Reel |
| STM804TM6E | SO8 | 3V Supervisor | 3.08 | Tube |
| STM804TM6F | SO8 | 3V Supervisor | 3.08 | Tape And Reel |
STM804T/S/R 技术支持与电子电路设计开发资源下载
- STM804T/S/R 数据手册Datasheet 下载.PDF
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