Datasheet

78K0/Kx2-L CHAPTER 10 REAL-TIME COUNTER
R01UH0028EJ0400 Rev.4.00 371
Sep 27, 2010
Figure 10-1. Block Diagram of Real-Time Counter
INTRTC
f
SUB
RTCE RCLOE1 RCLOE0 AMPM CT2 CT1 CT0
RINTE RCLOE2 ICT2 ICT1 ICT0
RTCE
AMPM
CT0 to CT2
RCKDIV
fSUB
RTC1HZ/
P41
RCKDIV
RINTE
RTCDIV/RTCCL/P40
INTRTCI
RCLOE2
fSUB
RWAIT
WALE WALIE WAFG RWAIT
RWST
RIFG
RWST
RIFG
12-bit counter
Real-time counter control register 1 (RTCC1)
Real-time counter control register 0 (RTCC0)
Alarm week
register
(ALARMWW)
(7-bit)
Alarm hour
register
(ALARMWH)
(6-bit)
Alarm minute
register
(ALARMWM)
(7-bit)
Year count
register
(YEAR)
(8-bit)
Month count
register
(MONTH)
(5-bit)
Week count
register
(WEEK)
(3-bit)
Day count
register
(DAY)
(6-bit)
Hour count
register
(HOUR)
(6-bit)
Minute count
register
(MIN)
(7-bit)
Second
count
register
(SEC)
(7-bit)
Wait control
0.5
seconds
Sub-count
register
(RSUBC)
(16-bit)
Count clock
= 32.768 kHz
Selector
Buffer
Buffer
Buffer
Buffer Buffer Buffer Buffer
Count enable/
disable circuit
Watch error
correction
register
(SUBCUD)
(8-bit)
Selector
Selector
Internal bus
Real-time counter control register 2 (RTCC2)
1 month
1 day 1 hour
1 minute