Standard ICs
•Pin descriptions
Pin No. Pin name
1
GND
2
N.C.
I/O
I
—
Pin voltage
—
—
Internal equivalent circuit
—
—
VCC
1k
3
C1
I/O
—
C1
4
C2
I/O
—
GND
VCC
C2
200Ω
GND
BA3899F
GND pin
Function
—
OSC1 oscillator circuit;
external capacitor pin
OSC2 oscillator circuit;
external capacitor pin
5
STBY
I
6
VCC
I
7
SW2
O
STBY
0
GND
—
VCC
—
X1
GND
1k
50k
200k
—
50k
X20
500Ω
Standby control pin
(HIGH state: standby cancelled)
᭺When applying resistance, etc.
to the STBY pin, be careful not
to exceed the threshold values.
VCC input pin
SW2 switching output pin
SW2
VCC
8
SW1
O
—
X1
X5
SW1 SW1 switching output pin
GND
2