R5107 Series
Watchdog Timer Equipped with Manual Reset with VD
Description
The R5107 Series are CMOS-based system power ICs with a voltage detector (VD) and watchdog timer (WDT) integrated in a single chip. R5107 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 R5107 is equipped with the function that inhibits clock monitoring of the WDT (INH) and manual reset (MR) that also stops the VD.
Spec
| Standard | Industrial | Automotive | |
|---|---|---|---|
| Input Voltage Range | 0.9 V to 6.0 V (7.0 V) | ||
| Operating Temperature Range | -40°C to 105°C (125°C) | -40°C to 125°C (150°C) | -40°C to 125°C (150°C) -40°C to 105°C (150°C) |
| Supply Current | Typ. 11 µA | ||
| Timeout Period | Typ. 310 ms (CTW = 0.1 µF) | ||
| Timeout Period Accuracy | ±33% | ||
| 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 | ||
| VD Release Output Delay Time | Typ. 370 ms (CD = 0.1 µF) | ||
| VD Release Delay Time Accuracy | ±16% | ±18% | ±18% (−40 °C ≤ Ta ≤ 125°C) ±16% (−40 °C ≤ Ta ≤ 105°C) |
Technical Documents
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Typical Application
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Timing Chart
* VTCD : Threshold voltage of CD pin when a power-on reset pulse inverting.
* Vref2H : CTW pin voltage at the end of WDT timeout period.
* Vref2L : CTW pin voltage at the begin of WDT timeout period.
* VDDL : 0.9 V (Max.)
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.
Qualification Test Plan (QTP) Sheets
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FAQ
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