BH6150F

Memory ICs System reset IC BH6150F The BH6150F has two reset circuits, one detects the power supply voltage, and the other detects the input voltage. With this one IC it is possible to apply a reset to the logic systems of CPUs, and mechanical systems. Applications Personal computers, CPUs, MPUs, logic circuits, reset circuits for mechanical systems, level detector circuits, battery voltage detector circuits, and backup power supply switching circuits Features Two types of reset circuit provided. 1) Reset circuit 1 (input voltage detector) Detection voltage: 1.25V (Typ.) Transmission delay time: 200µs (Typ.) Open collector output, and 10kΩ pull-up resistor on chip. 2) Reset circuit 2 (supply voltage detector) Detection voltage: 4.2V (Typ.) Transmission delay time: 25, 50, 100 and 200 ms (select using the Ct0 and Ct1 pins) Manual reset function provided Open collector output, and 10kΩ pull-up resistor on chip. Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits – 0.3 ~ + 7.0 450∗ – 20 ~ + 75 – 40 ~ + 125 Unit V mW °C °C ∗ Reduced by 4.5mW for each increase in Ta of 1°C over 25°C. 1 Memory ICs BH6150F Block diagram 8 7 6 5 Reset Circuit 1 10k – + – Vref 1.25V Reset Circuit 2 10k + – Delay Circuit Vref 1.25V 1 2 3 4 Pin descriptions Pin No. 1 2 3 4 5 6 7 8 Pin name Ct0 Input Ct1 GND Output 2 Output 1 VCC Manual reset Delay time control∗ Reset ...