M30280F6HP RENESAS [Renesas Technology Corp], M30280F6HP Datasheet - Page 64

• Manufacturer Part Number: M30280F6HP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

M
R
R
7. Clock Generation Circuit
e
E
1
Table 7.1 Clock Generation Circuit Specifications
. v
J
6
Oscillator status
after reset
0
The clock generation circuit contains four oscillator circuits as follows:
Table 7.1 lists the clock generation circuit specifications. Figure 7.1 shows the clock generation circuit.
Figures 7.2 to 7.7 show the clock- associated registers.
Use of clock
Clock frequency
Usable oscillator
Oscillation stop,
restart function
Other
Pins to connect
oscillator
C
2
9
(1) Main clock oscillation circuit
(2) Sub clock oscillation circuit
(3) Variable on-chip oscillators
(4) PLL frequency synthesizer
0 .
2 /
B
0
0
8
0
Item
4
G
J
7
a
o r
0 -
. n
u
2
3
p
0
, 1
0
(
M
2
0
1
- Ceramic oscillator
- Crystal oscillator
X
Available
Oscillating
0
- CPU clock source
- Peripheral function
Externally derived clock can be input
Oscillation Circuit
0 to 20 MHz
6
clock source
7
IN
C
, X
2 /
Main Clock
OUT
, 8
page 44
M
1
6
C
f o
2 /
8
3
) B
8
- CPU clock source
- Timer A, B's clock
5
- Crystal oscillator
X
Available
Stopped
32.768 kHz
Oscillation Circuit
source
CIN
Sub Clock
, X
COUT
- CPU clock source
- Peripheral function clock source
- CPU and peripheral function
Selectable source frequency:
Selectable divider:
Available
Oscillating
(CPU clock source)
clock sources when the main
clock stops oscillating
Variable On-chip Oscillator
f
by 2, by 4, by 8
1(ROC)
, f
2(ROC)
, f
3(ROC)
7. Clock Generation Circuit
- CPU clock source
- Peripheral function clock
Available
Stopped
10 to 20 MHz
source
PLL Frequency
Synthesizer