MB4214 Datasheet, PDF (3/12 Pages) Fujitsu Component Limited. – TIMER

MB4214
s PIN DESCRIPTIONS
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Pin Name
VCC
VZ
RT
VR
CT
VS
RST
OSC/FR
GND
OUT-A
OUT-B
-IN-A
-IN-B
+IN-A
+IN-B
V01
V02
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 resistor which controls the oscillator period.
Reference Voltage Output
Reference voltage of 3.5V is output. This pin can supply the current up to 3mA.
CT Input pin
This pin is provided to connect a capacitor which controls the oscillator period.
VS Input Voltage
Input Voltage to this pin controls the oscillator period.
Reset Pin
Counter operation is interrupted by the instruction of RST pin input level. All counter is cleared when
this pin is connected to GND. Power on reset is achieved by connecting a external capacitor.
Free Running Oscillator Output
When this pin is connected to GND, 4096 times as long as normal oscillator frequency is output.
Ground
Open Collector outputs
Comparator Inputs
Timer Output Pin NO. 1
The 2048times as long as fundamental oscillator period is kept.
Time Output Pin NO. 2
The 4096 times as long as fundamental oscillator period is kept. Owing to free running oscillation, the
4096times as long as oscillator frequency is output.
3