STM704T/S/R：3V Supervisor
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 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 STM704/795/806) 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.
Key Features
- RST orRST
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
- Low battery supply current - 0.4 μA (typ)
- Power-fail comparator (PFI/PFO
)
- Low supply current - 40 μA (typ)
- GuaranteedRST
(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
产品规格
应用手册
Technical Notes & Articles
宣传册
样片和购买
| 型号 | Package | Packing Type | RST Threshold (V) (typ) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | Unit Price (US$)
* | Quantity | ECCN (EU) | ECCN (US) | Country of Origin |
|---|
| STM704SM6F | SO-8 | Tape And Reel | 2.93 | - | - | 1.4 | 1000 | NEC | EAR99 | MOROCCO |
| STM704SDS6F | MSOP/TSSOP 8 | Tape And Reel | 2.925 | - | - | 1.23 | 1000 | NEC | EAR99 | PHILIPPINES |
| STM704TM6F | SO-8 | Tape And Reel | 3.08 | - | - | 1.23 | 1000 | NEC | EAR99 | MOROCCO |
质量和可靠性
