R5109G SeriesAEC-Q100 Planning

Microprocessor Supervisory Circuit with 2 clock input pin for Automotive Applications

Outline

Data Sheet
Data Sheet

The R5109G Series are CMOS-based microprocessor supervisory circuit and have high accuracy and ultra low supply current voltage detector with built-in delay circuit and watchdog timer. When the supply voltage is down across the threshold, or the watchdog timer does not detect the system clock from the microprocessor, the reset output is generated.

The voltage detector circuit is used for the system reset, etc. The detector threshold is fixed internally, and the accuracy is ±1.0%. The released delay time (Power-on Reset Delay) circuit is built-in, and output delay time is adjustable with an external capacitor, and the accuracy is ±16%*. When the supply voltage becomes the released voltage, the reset state will be maintained during the delay time. The output type of the reset is selectable, Nch open-drain, or CMOS.

The time out period of the watchdog timer can be also set with an external capacitor, and the accuracy is ±33%*.
The function to stop supervising clock by the watchdog timer (INH function) and the function to supervise two different clocks are built in this IC.
There are another 4 products by the difference of packages and the function of voltage detector and watchdog timer. The package of R5109G is SSOP-8G.

  • *Accuracy to center value of (Min.+Max.)/2

Features

Operating Voltage Range (Maximum Rating) 0.9V to 6.0V (7.0V)
Supply Current Typ. 11.5µA
< Voltage Detector Part > Detector Threshold Range 1.5V to 5.5V (0.1V steps)
Detector Threshold Accuracy ±1.0%
Detector Threshold Temperature Coefficient Typ. ±100ppm /°C (-40°C <= Ta <= 105°C)
Power-on Reset Delay Time accuracy ±16%* (-40°C <= Ta <= 105°C)
Power-on reset delay time of the voltage detector Typ. 370ms with an external capacitor : 0.1µF
< Watchdog Timer Part > Built-in a watchdog timer's time out period accuracy ±33%* (-40°C <= Ta <= 105°C)
Timeout period for watchdog timer Typ. 310ms with an external capacitor : 0.1µF
Reset timer for watchdog timer Typ. 34ms with an external capacitor : 0.1µF
With Inhibit pin (INH) Able to stop watchdog timer
Dual clock input Able to supervise two microprocessors
Package SSOP-8G
Operating Temperature Range -40 to +105°C
  • *Accuracy to center value of (Min.+Max.)/2

Applications

  • Supervisory circuit for car accessories including car audio systems, car navigation systems, and ETC systems.

Documents Download

Data Sheet Package Quality Assurance Data Suffix Composition & Content*1
R5109G Series SSOP-8G Contact us*1 -JE Sn (Sn: 100%)
  • *1The composition of the product cannot be specified.
  • *2The reliability information is not listed for devices above rank2. Please contact Ricoh sales representatives for further informations.

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