DVR-220-S
98
1
2
3
4
1
2
3
4
C
D
F
A
B
E
• Real Time Clock IC
32kHz Output
Control
Address
Decoder
Address
Resister
I/O
Control
OSC
Detect
Driver
Correction
Time Counter
(SEC, MIN, HOUR, WEEK, DAY, MONTH, YEAR)
OSC
OSCIN
DIV
Comparator_B
Comparator_A
Shift Resister
Interrupt Control
Alarm_B Register
(WEEK, MIN, HOUR)
Alarm_A Register
(WEEK, MIN, HOUR)
7
OSCOUT 6
/INTRA 5
SCL
2
VSS
4
VDD
8
SDA
3
/INTRB 1
No.
Pin Name
I/O
Function
1
/INTRB
O
Interruption output B
The output of 32.768kHz (in 32768Hz crystal use), cycled interrupt for CPU, or output alarm interrupt
(ALARM_B). This pin output 32.768kHz when activated power from 0V.
Nch open drain output.
2
SCL
I
Shift clock input
Synchronize with this clock, and input and output data from a SDA terminal.
Exceed VDD, and can input to 6V.
3
SDA
I/O
Serial input and output
Synchronize with SCL, and input and output writing data or readout data.
Exceed VDD, and can input to 6V. Nch open drain output in the output.
4
VSS
−
Ground pin
5
/INTRA
O
Interruption output A
Cycled interrupt for CPU, or output alarm interruption (ALARM_A, ALARM_B).
This pin becomes an OFF state when activated power from 0V. N ch open drain output.
6
OSCOUT
O
Oscillation circuit output
Connect a crystal resonator of 32.768kHz or 32.000kHz between OSCIN and
OSCOUT, and constitute oscillation circuit.
(component parts of oscillation circuit except crystal resonator have it built-in.)
7
OSCIN
I
Oscillation circuit input
8
VDD
−
Positive supply input
RS5C372A (JCKB ASSY : IC203)
Pin Function
Block Diagram
