Renesas RL78/G15 User Manual

RL78/G15 CHAPTER 5 CLOCK GENERATOR
R01UH0959EJ0110 Rev.1.10 Page 132 of 765
Mar 7, 2023
Figure 5-1. Block Diagram of Clock Generator
X1 oscillation
stabilization time counter
OSTS1
3
MSTOP
EXCLK
High-speed system clock
oscillator
Note 1
Crystal/ceramic
oscillation
CPU
HIOSTOP
Standby controller
Internal bus
High-speed on-chip oscillator
16/8/4/2/1 MHz (typ.)
HOCODIV
1
Internal bus
AMPH
OSC
SEL
Clock operation mode control register (CMC)
Note 1
f
x
X
2/
EXCLK/P
122/
TI05/TO
05
/(INTP
2)
Note 1
f
EX
f
MX
X1/P121/TI07/
TO07/(INTP3)
Note 1
Option byte (000C2H) FRQSEL0 to FRQSEL2
f
IH
HOCODIV
2
HOCODIV
0
High-speed on-chip oscillator frequency select register (HOCODIV)
Clock operation status control register (CSC)
Note 1
f
IL
Option byte (000C0H) WDTON WDSTBYON
HALT/STOP mode signal
Clock operation status control register (CSC)
Note 1
STOP mode signal
External input
clock
Controller
OSTS2 OSTS0
Oscillation stabilization time select register (OSTS)
Note 1
MCM0
System clock control register
(
CKC)
Note
1
MOST
11
MOST
8
MOST
9
MOST
10
MOST
13
MOST
15
MOST
17
MOST
18
Watchdog timer
12-bit interval timer
Note 1
WUTMM
CK0
Operation speed mode control register (OSMC)
Note 1
MCS
Main system clock
source selector
Low-speed on-chip
oscillator
15 kHz (typ.)
Clock output/buzzer output
Oscillation stabilization time counter status register (OSTC)
Note 1
Controller
f
CLK
Peripheral enable register 0 (PER0)
Timer array unit Serial array unit Serial interface IICA
Note 1
A/D converter Comparator
Note 1
f
MAIN
STOP mode
HALT mode
Normal operation
mode
TMKA
EN
Note 1
CMP
EN
Note 1
ADC
EN
IICA0
EN
Note 1
SAU0
EN
TAU0
EN
HIOTRM
5
HIOTRM
4
HIOTRM
3
HIOTRM
2
HIOTRM
1
HIOTRM
0
High
-speed on-chip oscillator
trimming register (HIOTRM)
6
Note 1. 16-pin and 20-pin products only.

Renesas RL78/G15 Specifications

General

Brand	Renesas
Model	RL78/G15
Category	Microcontrollers
Language	English