Nisshinbo Micro Devices Inc. R5106N291A-TR-FE

R5106N is a high-precision, ultra-low power microprocessor supervisory circuit with a built-in voltage detector, delay circuit, and watchdog timer. A reset output is generated when the supply voltage falls below the threshold or when the watchdog timer fails to detect a system clock from the microprocessor. The voltage detector circuit is used for system reset and similar applications. The detector threshold is internally fixed with ±1.0% accuracy. A built-in release delay time circuit allows the output delay time to be adjusted via an external capacitor with ±16% accuracy. When the supply voltage is above the release voltage, the reset state is maintained during the delay period. The reset output type can be selected as either N-channel open-drain or CMOS. The watchdog timer timeout period can also be set via an external capacitor with ±33% accuracy. A function is provided to disable clock monitoring via the watchdog timer. Four additional product variants are available, differing in package type and voltage detector/watchdog timer configurations. The R5106N comes in a SOT-23-6 package.

• Typical supply current: 11µA
• Operating voltage range: 0.9V to 6.0V
• Detector threshold range: 1.5V to 5.5V
• Detector threshold accuracy: ±1.0%
• Power-on reset delay time accuracy: ±16%
• Typical power-on reset delay time for voltage detector: 370ms
• Built-in watchdog timer timeout period accuracy: ±33%
• Typical watchdog timer timeout period: 310ms
• Typical watchdog timer reset time: 34ms
• Inhibit pin to halt watchdog timer
• SOT-23-6 package

• Supervisory circuit for microprocessor-based equipment