MB4214 Datasheet (Fujitsu)

MB4214, TIMER

Pin No.

1 2 Pin Name VCC VZ Power Supply Voltage, 4.5 to 16V Zener Pin VZ pin outputs zener current 20mA max.

Unless it is used as stability power supply source, it should be connected to VCC pin through a resistor about 100kΩ.

RT Input Pin This pin is provided to connect the time constant of a res

FUJITSU SEMICONDUCTOR DATA SHEET ASSP w w w MB4214 a TIMER D .

S a t e e h U 4 t m o .c DS04-29106-2E LONG PERIOD TIMER The Fujitsu MB4214 is designed for a long period timer.

It contains oscillator, divider (13 stages of flip-flop), output circuit, power supply circuit and comparator (2-ch).

Arbitrary period is set by external resistor RT, capacitor CT and VS input voltage.

Time adjustable: 500ms to 100hours Oscillator period is controlled by VS input voltage <