M16C6NK Datasheet, PDF (75/404 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

Under development
This document is under development and its contents are subject to change.
M16C/6N Group (M16C/6NK, M16C/6NM)
8. Clock Generating Circuit
Sub clock oscillation circuit
XCIN
XCOUT
CM04
Sub clock
CM01-CM00=00b
I/O ports _{PM01-PM00=00b, CM01-CM00=01b}
PM01-PM00=00b, CM01-CM00=10b
fC32
1/32
fC
Divider
fCAN0
By CCLK0,1 and 2
CLKOUT
PM01-PM00=00b,
CM01-CM00=11b
fCAN1
CM10=1 S Q
(stop mode)
R
CM21
XIN
XOUT
CM05
Main clock
Main clock
oscillation circuit
On-chip
oscillator
On-chip oscillator
clock
Oscillation stop,
re-oscillation
detection circuit
PLL frequency
synthesizer
PLL clock
1
0 CM11
CM02
CM21=1
CM21=0
Divider
By CCLK4,5 and 6
f1
PCLK0=1
f2
PCLK0=0
f8
f32
PCLK0=1
f1SIO
f2SIO
PCLK0=0
PCLK1=1
PCLK1=0
f8SIO
f32SIO
bcd
a _Divider
e
CM07=0
fC
CM07=1
fAD
CPU clock
BCLK
WAIT instruction
SQ
R
RESET
Software reset
NMI
Interrupt request level
judgment output
PM00, PM01
: Bits in PM0 register
CM00, CM01, CM02, CM04, CM05, CM06, CM07 : BIts in CM0 register
CM10, CM11, CM16, CM17
: Bits in CM1 register
PCLK0, PCLK1
: Bits in PCLKR register
CM21, CM27
: Bits in CM2 register
CCLK0 to CCLK2, CCLK4 to CCLK6
: Bits in CCLKR register
b
c
d
a
1/2
1/2
1/2
1/2
1/2
1/32
1/2
1/4
1/8
1/16
CM06=0 ^CM06=1
CM06=0 CM17-CM16=10b
CM06=0 CM17-CM16=01b
CM17-CM16=00b
CM06=0
CM17-CM16=11b
e
Details of divider
Oscillation stop, re-oscillation detection circuit
Main clock
Pulse generating circuit
for clock edge detection
and charge,
discharge control
Charge,
discharge
circuit
CM27 = 0 ^Reset
generating
circuit
Oscillation stop
detection reset
Oscillation stop,
CM27 = 1 ^{re-oscillation detection}
interrupt generating
circuit
Oscillation stop,
re-oscillation detection
interrupt signal
CM21 switch signal
PLL frequency synthesizer
Main clock
Programmable
counter
Phase
comparator
Charge
pump
Voltage
control
oscillator
(VCO)
Internal
lowpass filter
1/2
PLL clock
Figure 8.1 Clock Generating Circuit
Rev.2.00 Nov 28, 2005 page 57 of 378
REJ09B0124-0200