Watchdog Timer

Watchdog Timer with Voltage Detector and Voltage Regulator

Product
Name
Operating
Voltage
Range
Voltage Detector Part Watchdog Timer Part Supply
Current
Voltage Regulator Part Package Data Sheet
(PDF)
Detector
Threshold
Range
Detector
Threshold
Accuracy
Output Delay Time
(Condition)
WDT Timeout Period
(Condition)
Inhibit
pin
Output
Voltage
Range
Output
Voltage
Accuracy
Output
Current
Min. Typ. Max. Min. Typ. Max. Typ. 
R5101G 1.5V to 10.0V 1.7V to 5.0V ±2.5% (CD=0.001µF) (CW=0.01µF) * 5µA 1.8V to 5.0V ±2.5% 50mA SSOP-8G Download
7ms 14ms 35ms 50ms 120ms 250ms
new
R5110Sxx1A
R5110Sxx1B
*1
3.5V to 36.0V 1.6V to 5.0V ±1.8%*2 (CD=0.22µF) (CTW=0.01µF) - 25µA 1.8V to 5.0V ±1.5%*2 500mA HSOP-8E
HSOP-18
Download
2.41MB
194ms 242ms 290ms 14.4ms 18ms 21.6ms
new
R5110Sxx2C
R5110Sxx2D
*1
*
  • *1Window Watchdog Timer
    Window Watchdog Timer monitors the presence of output pulses from a CPU in a preset period of time (Open Window), in case these pulses fail the watchdog timer will initiate a CPU reset after a time out period.
  • *2The voltage accuracy is applied to all the operating temperature range.

Watchdog Timer with Voltage Detector

Product
Name
Operating
Voltage
Range
Voltage Detector Part Watchdog Timer Part Supply
Current
(Typ.)
Remarks Package Data Sheet
(PDF)
Detector
Threshold
Range
Detector
Threshold
Accuracy
Output
Delay Time
Accuracy
WDT Timeout
Period
Accuracy
Inhibit
pin
R5105N*1
Automotive
0.9V to 6.0V 1.5V to 5.5V ±1.0% ±16% ±33% - 11µA   SOT-23-6 Download Download*2
R5106N * CD pin and CTW pin are combined. Download
R5107G With MR (Manual reset) pin SSOP-8G Download
R5108G 1.5V to 6.0V With SENSE pin Download
R5109G 0.9V to 6.0V 11.5µA 2 clock input type Download
  • *1This product is designed for automotive applications. For details, please refer to the Automotive ICs page.
  • *2This is the data sheet which combined R5105N, R5106N, R5107G, R5108G and R5109G.
  • *All PDF files are less than 1MB unless otherwise stated.
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Technical Info.

  • Application Note

    Technical Information on Ricoh Power Management ICs.

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