Product overview
Description
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.
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All features
- RST orRSToutputs
- 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
Circuit Diagram
EDA Symbols, Footprints and 3D Models
STMicroelectronics - STM804T/S/R
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Symbols
Footprints
3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STM804RM6F | Active | SO-8 | Industrial | Ecopack3 | |
| STM804SM6F | Active | SO-8 | Industrial | Ecopack3 | |
| STM804TM6F | Active | SO-8 | Industrial | Ecopack3 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Order from distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | RST Threshold (V) (typ) | Country of Origin | Budgetary Price (US$)*/Qty | Unit Price (US$) | Country of Origin | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | ||||||||||||||
| STM804TM6F | distributors No availability of distributors reported, please contact our sales office | Active | EAR99 | NEC | Tape and Reel | SO-8 | - | - | 3.08 | MOROCCO | | 1.4241 | MOROCCO | ||
| STM804RM6F | distributors No availability of distributors reported, please contact our sales office | Active | EAR99 | NEC | Tape and Reel | SO-8 | - | - | 2.63 | MOROCCO | | 1.4241 | MOROCCO | ||
| STM804SM6F | distributors No availability of distributors reported, please contact our sales office | Active | EAR99 | NEC | Tape and Reel | SO-8 | - | - | 2.93 | MOROCCO | | 1.4241 | MOROCCO | ||
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors