Description

The STM7710PUC is an electronic component model in the category of IC Chips. It is a self-contained device that provides microprocessor supervisory functions with the ability to non-volatize and write-protect external LPSRAM. It features a precision voltage reference and comparator to monitor 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). Additionally, it offers a watchdog timer (except for STM703/704/819) and a power-fail comparator (except for STM818) to provide the system with an early warning of impending power failure.

Specifications and Features

- 5 V operating voltage
- NVRAM supervisor for external LPSRAM
- Chip-enable gating (STM818 only) for external LPSRAM (7 ns max prop delay)
- RST and RST outputs
- 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

Application Scenarios

The STM7710PUC is commonly used in electronic devices that require microprocessor supervisory functions and external LPSRAM. It is suitable for applications that need a reliable system reset function and early warning of power failure.

Comparison

Advantages:
- Provides microprocessor supervisory functions
- Ability to non-volatize and write-protect external LPSRAM
- Precision voltage reference and comparator
- Watchdog timer and power-fail comparator
- Operating temperature range of –40 °C to +85 °C

Disadvantages:
- Not applicable for devices without microprocessors
- Limited to specific operating voltage and temperature range