R8357 Series
Watchdog Timer Equipped with Manual Reset with VD
R8357 Series
Watchdog Timer Equipped with Manual Reset with VD
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Description
The R8357 Series are CMOS-based system power ICs with a voltage detector (VD) and watchdog timer (WDT) integrated in a single chip. R8357 monitors the power system of devices equipped with microprocessors and prevents system runaway with a reset signal when a malfunction occurs. The output delay time of the VD and watchdog timeout period/reset time can be adjusted by an external capacitor with a high degree of accuracy. The R8357 is equipped with the function that inhibits clock monitoring of the WDT (INH) and manual reset (MR) that also stops the VD.
Spec
| Automotive | |
|---|---|
| Input Voltage Range | 0.9 V to 6.0 V (7.0 V) |
| Operating Temperature Range | -40°C to 125°C (150°C) |
| Supply Current | Typ. 11 µA |
| Timeout Period | Typ. 310 ms (CTW = 0.1 µF) |
| Timeout Period Accuracy | ±33% (-40°C ≤ Ta ≤ 110°C) |
| Reset Time | Typ. 34 ms (CTW = 0.1 µF) |
| Package | SSOP-8G |
| VD Detector Threshold Range | 1.5 V to 5.5 V (0.1 V step) |
| VD Detector Threshold Accuracy | ±1.0% |
| VD Detector Threshold Temperature Coefficient | Typ. ±100 ppm/°C (-40°C ≤ Ta ≤ 110°C) |
| VD Release Output Delay Time | Typ. 350 ms (CD = 0.1 µF) |
| VD Release Delay Time Accuracy | ±16% (-40°C ≤ Ta ≤ 110°C) |
Technical Documents
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Typical Application
Quality & Packages
- Refer to the datasheets for the details on the product.
- The package file or the datasheet includes package dimensions, taping specifications, taping reels dimensions, power dissipations, and recommended land pattern.
FAQ
Buy / Contact
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Technical Support
R8357 Series