STM704 5V Supervisor
The STM690A/692A/703/704/802/805/817/818/819 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 VCCinput for an out-of-tolerance condition. When an invalid VCCcondition occurs, the reset output (RST) is forced low (or high in the case of RST). These devices also offer a watchdog timer (except for STM704/704/819) as well as a power-fail comparator (except for STM818) 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
技术特性
- 5 V operating voltage
- NVRAM supervisor for external LPSRAM
- Chip-enable gating (STM818 only) for external LPSRAM (7 ns max prop delay)
- RST and RSToutputs
- 200 ms (typ) trec
- Watchdog timer - 1.6 sec (typ)
- Automatic battery switchover
- Low battery supply current - 0.4 μA (typ)
- Power-fail comparator (PFI/PFO)
- Low supply current - 40 μA (typ)
- Guaranteed RST(RST) assertion down to VCC = 1.0 V
- Operating temperature: –40 °C to +85 °C (industrial grade)
- RoHS compliance
- Lead-free components are compliant with the RoHS directive
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功能框图
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STM704 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| STM704RM6F |
Active |
1.2333 |
1000 |
SO-8 |
Tape And Reel |
|
STM704RM6F |
| STM704M6F |
Active |
1.2333 |
1000 |
SO-8 |
Tape And Reel |
|
STM704M6F |
| STM704M6E |
Active |
1.4029 |
1000 |
SO-8 |
Tube |
|
STM704M6E |
DATASHEET
| 描述 |
版本 |
大小 |
| STM704 : 5 V supervisor with battery switchover |
10 |
1144KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN1336: Power-fail comparator for NVRAM supervisory devices |
1 |
59KB |
| AN1957: Microprocessor supervisor functions |
1 |
247KB |
