Pioneer DVR-5100H-S Service Manual page 104

Mi RS5C372A (TUJB ASSY : IC2271)
¢ Real Time Clock IC
@ Block Diagram
Alarm_A Register
Comparator_A (WEEK, MIN, HOUR)
32kHz Output
Ti
ial Driver |
Alarm_B Register
(WEEK, MIN, HOUR)
ter
ime Coun
Correction (SEC, MIN, HOUR, WEEK, DAY, MONTH, YEAR)
Control
Interrupt Control nae Shift Resister
®@ Pin Function
[ No. | Pin Name | VO _|
a _ eo
SCL Synchronize with this clock, and input and output data from a SDA terminal.
Exceed VDD, and can input to 6V.
Serial input and output
SDA VO |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.
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 OV.
Nch open drain output.
Shift clock input
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 OV. N ch open drain output.
Connect a crystal resonator of 32.768kHz or 32.000kHz between OSCIN and
OSCOUT Ex Oscillation circuit output
OSCOUT, and constitute oscillation circuit.
OSCIN iit Oscillation circuit input —_| (component parts of oscillation circuit except crystal resonator have it built-in.)
|e [vop | —_| Positive supply input
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