NEC 78K0R/KE3 User Manual page 262

Real-time counter control register 1
WALE WALIE WAFG
Alarm week
(ALARMWW)
1 month
Week count
Month count
Year count
register register
register
(WEEK)
(YEAR) (MONTH)
(5-bit)
(8-bit)
Buffer
Buffer
f
12-bit counter
SUB
262
CHAPTER 7 REAL-TIME COUNTER
Figure 7-1. Block Diagram of Real-Time Counter
RIFG RWST RWAIT RTCE RCLOE1 RCLOE0 AMPM
Alarm hour
register
register
(ALARMWH)
(7-bit)
(6-bit)
AMPM
1 day 1 hour
Day count Hour count
register register
(DAY) (HOUR)
(6-bit) (6-bit)
(3-bit)
Buffer
Buffer Buffer
Internal bus
RINTE RCLOE2
User's Manual U17854EJ9V0UD
Real-time counter control register 0
CT2 CT1
Alarm minute
register
(ALARMWM)
(7-bit)
RWST
1 minute
Second
Minute count
count
register
register
(MIN)
Wait control
(SEC)
(7-bit)
(7-bit)
Buffer Buffer
Real-time counter control register 2
RCKDIV ICT2 ICT1 ICT0
RINTE
RCKDIV
RCLOE2
CT0
f
SUB
RTC1HZ/
INTP3/P30
INTRTC
CT0 to CT2
RIFG
RWAIT
0.5
seconds
Count clock
= 32.768 kHz
Sub-count
register
(RSUBC)
f
SUB
(16-bit)
Count enable/
Watch error
disable circuit
correction
register
(SUBCUD)
(8-bit)
RTCE
INTRTCI
RTCDIV/RTCCL/P15