R5109G RICOH Co.,Ltd., R5109G Datasheet
R5109G
Related parts for R5109G
R5109G Summary of contents
Page 1
... R5109G SERIES OUTLINE The R5109G Series are CMOS-based µcon supervisory circuit, or high accuracy and ultra low supply current voltage detector with built-in delay and watchdog timer. When the V the watchdog timer does not detect the system clock from the detector circuit is used for the system reset, etc. The detector threshold is fixed internally, and the tolerance is 1 ...
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... R5109G BLOCK DIAGRAMS VDD CD TW RESETB VDD CD TW RESETB 2 R5109Gxx1A + - - + CLOCK WATCHDOG TIMER DETECTOR CLOCK DETECTOR R5109Gxx1C + - - + CLOCK WATCHDOG DETECTOR TIMER CLOCK DETECTOR GND SCK1 SCK2 INH GND SCK1 SCK2 INH ...
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... Inhibit Pin ("L": Inhibit the watchdog timer) External Capacitor Pin for Setting Delay Time of Voltage Detector Ground Pin Clock Input Pin 1 from Microprocessor Clock Input Pin 2 from Microprocessor External Capacitor Pin for Setting Reset and Watchdog Timeout Periods Power supply Pin R5109G ) DET 3 ...
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... INH I Output Current RESETB P Power Dissipation D Topt Operating Temperature Range Tstg Storage Temperature Range ELECTRICAL CHARACTERISTICS R5109GxxxA/C Unless otherwise specified, V The number of Bold font applied to the temperature range from - 105 C Symbol Item V Operating Voltage IN Iss Supply Current -V Detector Threshold DET ...
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... Supply Current Test Circuit Conditions V =V x0.2, IN SCKL V =V x0.8 SCKH RESETB RESET SCK1 I/O SCK2 RESET TW I RESETB RESET SCK1 I/O SCK2 RESET TW I/O R(R5109GxxxA) Clock input Clock input C TW Min. Typ. Max. 60 110 164 500 R5109G Unit ...
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... R5109G TIMING DIAGRAM (Nch open-drain, RESETB pin is pulled VDD +VDET -V DET C D VTC VrefH TW VrefL SCK1 SCK2 tpLH RESETB (1) (2) 6 (R5109GxxxA/R5109GxxxC tpHL TWD tpLH TWR (10) (2)(3) (3) (4) (1) (5) (6) tpHL TWDI (6) (7) (8) (8) (9) (9) (4) ...
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... Likewise, after the SCK1 pulse and SCK2 pulse are input at almost the same time, when the SCK2 pulse is input, the WDT will be cleared the status i) If the almost same timing input of SCK1 and SCK2 continues twice, the WDT will be cleared. (as the status k) R5109G ), after the released delay time DET ...
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... R5109G 0 to 50ns SCK1 SCK2 Example timing of too close input pulses (This pattern will be recognized the clock timing is same by the WDT) Power on Reset Operation against the input glitch +V DET DET 0V +V TCD TCD 0V Incomplete Discharge RESETB 0V Watchdog Timeout period/Reset hold time The watchdog timeout period and reset hold time can be set with an external capacitor to TW pin ...
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... SCK1 clock pulse, two or more SCK2 clock pulses are desirable to put into. APPLICATION NOTES If a resistor is connected to the VDD pin, the operation might be unstable with the supply current of IC itself. ), discharge of an external capacitor connected to the CD pin DET voltage returns equal or more than (+V DD R5109G ), the delay time as DET 9 ...
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... R5109G VDD R1 VIN R5108 RESETB TYPICAL CHARACTERISTICS 1) Supply Current vs. Input Voltage + ++ + + + . . . ++++++ +++++++ +++ 2) Detector Threshold vs. Temperature 10 VDD R1 VIN R2 R5108 RESETB Connection examples affected by the conduction current ++ + + R5108 CMOS RESETB Output + ++ + + + ++ + + . . . ++++++ +++++++ +++ ...
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... Detector Threshold Hysteresis vs. Temperature R5109G 11 ...
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... R5109G 4) Nch Driver Output Current vs. V VDD=6.0V VDD=5.0V 5) Nch Driver Output Current vs Pch Driver Output Current vs Topt= VDD=4.0V VDD=3.0V VDD=2.0V VDD=1.5V VDD=1. -40 Vds=0.5V Topt=-40 25 105 -40 ...
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... Released Delay Time vs. Input Voltage 9) Detector Output Delay Time vs. Temperature 8) Released Delay Time vs. Temperature 10) WDT Reset Timer vs. Temperature R5109G 13 ...
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... R5109G 11) WDT Timeout Period vs. Temperature 13) WDT Timeout Period vs. Input Voltage 14 12) WDT Reset Timer vs. Input Voltage ...