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RS5C372A (TUJB ASSY : IC2271)
3 7 63 1515 0
• Real Time Clock IC
Block Diagram
Pin Function
No.
Pin Name
1
/INTRB
TE
L 13942296513
2
SCL
3
SDA
4
VSS
5
/INTRA
6
OSCOUT
7
OSCIN
8
VDD
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5
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32kHz Output
Control
7
OSCIN
Driver
OSC
Correction
OSCOUT 6
OSC
Detect
/INTRA 5
/INTRB 1
I/O
Interruption output B
The output of 32.768kHz (in 32768Hz crystal use), cycled interrupt for CPU, or output alarm interrupt
O
(ALARM_B). This pin output 32.768kHz when activated power from 0V.
Nch open drain output.
Shift clock input
I
Synchronize with this clock, and input and output data from a SDA terminal.
Exceed VDD, and can input to 6V.
Serial input and output
I/O
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.
−
Ground pin
Interruption output A
O
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.
O
Oscillation circuit output
I
Oscillation circuit input
−
Positive supply input
x
ao
y
i
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6
8
Comparator_A
Comparator_B
Time Counter
DIV
(SEC, MIN, HOUR, WEEK, DAY, MONTH, YEAR)
Address
Address
Decoder
Resister
Interrupt Control
Shift Resister
Function
Q Q
3
6 7
1 3
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.)
u163
.
DVR-3100-S
6
7
2 9
9 4
2 8
Alarm_A Register
(WEEK, MIN, HOUR)
Alarm_B Register
VDD
8
(WEEK, MIN, HOUR)
VSS
4
SCL
2
I/O
Control
3
SDA
1 5
0 5
8
2 9
9 4
m
co
7
8
9 9
A
B
C
2 8
9 9
D
E
F
99
8
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