Renesas M16C/29 Series Hardware Manual page 59

M16C/29 Group
CM10=1(stop mode)
WAIT instruction
RESET
Software reset
NMI
Interrupt request level judgment output
CM00, CM01, CM02, CM04, CM05, CM06, CM07: CM0 register bits
CM10, CM11, CM16, CM17: CM1 register bits
PCLK0, PCLK1, PCLK5: PCLKR register bits
CM21, CM27 : CM2 register bits
Oscillation stop, re-oscillation detection circuit
Pulse generation
Charge,
circuit for clock
Main
discharge
edge detection
clock
circuit
and charge,
discharge control
Main clock
Figure 7.1. Clock Generation Circuit
Rev.1.00 Nov 01,2004
REJ09B0101-0100Z
Sub-clock
generating circuit
X X
CIN COUT
CM04
ROCR0,ROCR1
ROCR2, ROCR3
S Q
X X
IN OUT
R
Main
clock
Main clock
generating circuit
CM05
S Q
R
Reset
CM27=0
generating
circuit
Oscillation stop,
re-oscillation
CM27=1
detection interrupt
generating circuit
PLL frequency synthesizer
Programmable
counter
Phase
comparator
page 39 of 402
I/O ports
Sub-clock
Variable On-chip
oscillator
on-chip
clock
oscillator
Oscillation
stop, re-
oscillation
detection
circuit
PLL
frequency
synthesizer
PLL
CM21=1
clock
1
0 CM21=0
CM11
CM02
e
1/2 1/2
a
1/2
CM06=0
CM17 CM16=01
CM06=0
CM17 CM16=00
2
Variable On-chip Oscillator
ROCR1 ROCR0=00
f
1(ROC)
Oscillation stop
detection reset
f
2(ROC)
ROCR1 ROCR0=01
Oscillation stop,
re-oscillation
detection signal
f
3(ROC)
ROCR1 ROCR0=11
CM21 switch signal
Charge
pump
Internal low-
pass filter
7. Clock Generation Circuit
CCLK2-CCLK0=000
CCLK2-CCLK0=001
CCLK2-CCLK0=010
CCLK2-CCLK0=011
CCLK2-CCLK0=100
CAN module
system clock
divider
PCLK5=0,CM01-CM00=00
2
PCLK5=0,CM01-CM00=01
2
PCLK5=1,
PCLK5=0,
CM01-CM00=00 PCLK5=0,
2
CM01-CM00=10
2
CM01-CM00=11
f
C32
1/32
f
1 PCLK0=1
f
2
PCLK0=0
f
C
f
8
f
32
f
AD
f
1SIO
PCLK1=1
f
2SIO
PCLK1=0
f
8SIO
f
32SIO
e b c
CM07 0
a
d =
Divider
f
C
CM07 1
=
b
1/2 1/2 1/2
1/4 1/8 1/16
CM06=0
CM17 CM16=11
CM06=1
CM06=0
CM17 CM16=10
2
2
Details of divider
2
1/2 1/2
2
2
ROCR3 ROCR2=10
ROCR3 ROCR2=01
2
1/2 PLL clock
Voltage
control
oscillator
(VCO)
2
2
f
CAN
2
2
2
CLK
OUT
2
D4INT clock
CPU clock
BCLK
c
1/32
2
d
1/2
ROCR3 ROCR2=11
2
2
On-chip
oscillator
clock