HA16113FPJ Datasheet | Hitachi Semiconductor

Features - - - - Simultaneous or independent control of auto-reset outputs. Precisely regulated output voltage and accurate NMI trigger voltage (both ±2%). Low-voltage control with NMI, simultaneous RES1 and RES2, and STBY outputs. Independently selectable durations for power-on reset and auto-reset: power-on duration is mon to both reset outputs; auto-reset durations can be selected independently. - Reset mand input pin (CONT) for second reset output (RES2). - WDT filter function detects minimum pulse width and maximum period of P-RUN input pulses. Pin Arrangement P-RUN1 Cf1 Rf CR1 STBYadj STBY RES1 NMI NMIadj Re1 Re2 GND 1 2 3 4 5 6 7 8 9 10 11 12 (Top view) 24 23 22 21 20 19 18 17 16 15 14 13 P-RUN2 Cf2 RR CR2 SW CONT RES2 CRES VOUT VCONT CS VCC Pin Description Pin No. Symbol 1 2 3 P-RUN1 Cf1 Rf Function Input from main CPU to watchdog timer 1 (WDT1) For connecting capacitor Cf1 to determine WDT1 filter characteristic (frequency band) For connecting mon bias resistor Rf to determine WDT1 and WDT2 filter characteristics (frequency band), power-on reset time (t on , mon to RES1 and RES2 ), clock-off time of auto-reset circuits 1 and 2, reset high time (t RH1 and t RH2),reset low time (t RL1 and t RL2), and reset pulse delay at voltage drop and recovery. Use the resistor value from 100 kΩ to 500 kΩ. For connecting capacitor C R1 to determine ton for power-on reset and toff1, t RH1, and t RL1 of auto-reset circuit 1. For adjusting standby trigger voltage (insert a resistor between this pin and ground) Remended range: V H2 = 2.8 to 4.0 V Standby signal output Reset signal output to main CPU Low-voltage interrupt signal output for memory backup 4 5 6 7 8 CR1 STBY adj STBY RES1 NMI Pin Description (cont) Pin No. Symbol 9 NMI adj Function For fine adjustment of Vout trigger level for NMI signal (insert a resistor between this pin and Vout or ground) Remended range: V H1 = 4.4 to 5.2 V For connecting resistor Re1 to determine voltage Vout...