Overview
The STM690TM6F is a voltage supervisor integrated circuit manufactured by STMicroelectronics. It is part of the STM690/704/795/802/804/805/806 family of supervisors, which provide microprocessor supervisory functions. This device is designed to monitor the system's power supply and ensure proper operation by providing reset signals and other protective features.
The STM690TM6F includes a precision voltage reference and comparator to monitor the VCC input for out-of-tolerance conditions. It also features a watchdog timer and a power-fail comparator to provide early warnings of impending power failure. The device supports automatic battery switchover, making it suitable for systems that require reliable power management.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | STM690TM6F |
| Package | SO-8, TSSOP-8 |
| Grade | Industrial |
| RoHS Compliance | Ecopack3 |
| Operating Temperature | -40 °C to 85 °C |
| RST Threshold (V) (typ) | 3.08 V |
| Watchdog Timer (typ) | 1.6 s |
| Low Battery Supply Current (typ) | 0.4 μA |
| Low Supply Current (typ) | 40 μA |
Key Features
- RST or RST outputs
- NVRAM supervisor for external LPSRAM
- Manual (push-button) reset input
- Watchdog timer (1.6 s typical)
- Automatic battery switchover
- Power-fail comparator (PFI/PFO)
- Low battery supply current (0.4 μA typical)
- Low supply current (40 μA typical)
- Guaranteed RST assertion down to VCC = 1.0 V
- RoHS compliance and lead-free components
Applications
The STM690TM6F is suitable for a variety of applications that require reliable power management and microprocessor supervision. These include:
- Embedded systems requiring robust power monitoring and reset functions.
- Battery-powered devices that need automatic switchover between power sources.
- Industrial control systems where reliable operation is critical.
- Automotive and aerospace systems that demand high reliability and low power consumption.
Q & A
- What is the primary function of the STM690TM6F?
The primary function of the STM690TM6F is to provide microprocessor supervisory functions, including power-on reset, watchdog timer, and power-fail detection.
- What are the typical package options for the STM690TM6F?
The STM690TM6F is available in SO-8 and TSSOP-8 packages.
- What is the operating temperature range for the STM690TM6F?
The operating temperature range is -40 °C to 85 °C.
- What is the typical RST threshold voltage for the STM690TM6F?
The typical RST threshold voltage is 3.08 V.
- Does the STM690TM6F have a watchdog timer?
- What is the low battery supply current of the STM690TM6F?
The low battery supply current is typically 0.4 μA.
- Is the STM690TM6F RoHS compliant?
- What is the purpose of the power-fail comparator in the STM690TM6F?
The power-fail comparator provides an early warning of impending power failure.
- Can the STM690TM6F perform automatic battery switchover?
- What is the guaranteed RST assertion voltage for the STM690TM6F?
The RST is guaranteed to assert down to VCC = 1.0 V.
