Renesas RL78 Series User Manual

RL78/F13, F14 CHAPTER 9 REAL-TIME CLOCK
R01UH0368EJ0210 Rev.2.10 657
Dec 10, 2015
Figure 9-1. Block Diagram of Real-time Clock
f SUB
f MX
f IH
RTC clock select register (RTCCL)
Timer input select
register 2 (TIS2)
Timer input select
register 1 (TIS1)
RTCCL_7 RTCCL_6 TIS23 TIS22 TIS17 TIS16 TIS14RTCCKS1 RTCCKS0
INTRTC
RTCE RCLOE1 AMPM CT2 CT1 CT0
RTCE
AMPM
CT0 to CT2
f RTC
RWAIT
WALE WALIE WAFG RWAIT
RWST
RIFG
RWST
RIFG
Real-time clock control register 1 Real-time clock control register 0
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
Internal
counter
(16 bits)
Selector
Selector
Selector
Division
control
Buffer
Buffer
Buffer
Buffer Buffer Buffer Buffer
Count enable/
disable circuit
Watch error
correction
register
(SUBCUD)
(8-bit)
16-bit watch
error correction
register
(SUBCUDW)
(16-bit)
Internal bus
RTCCKS1 RTCCL_6, RTCCKS0 RTCCL_7
1 month
1 day 1 hour
1 minute
RTC1HZ
Timer array units 0 and 1
1 seconds
1 year
Output
controller

Renesas RL78 Series Specifications

General

Core	RL78
CPU Clock Speed	Up to 32 MHz
Flash Memory	Up to 512 KB
RAM	Up to 32 KB
Operating Voltage	1.6 V to 5.5 V
Low Power Modes	HALT, STOP, SNOOZE
CPU Architecture	16-bit
Temperature Range	-40°C to +85°C
Package	LQFP
Timers	16-bit timers
Communication Interfaces	UART, I2C, LIN
A/D Converter	12-bit