Datasheet
M16C/6S Group Clock Generation Circuit
R01DS0201EJ0502 Rev.5.02 page 27 of 203
Dec 25, 2012
• CPU clock source
• Peripheral function
clock source
Use of clock
Main clock
oscillation circuit
Item
Clock frequency 5.12 MHz
• Crystal oscillator (Note 1)
Usable oscillator
X
IN, XOUT
Pins to connect
oscillator
No
Oscillation stop,
restart function
Oscillating
Oscillator status
after reset
Externally derived clock can be input
Other
On-chip Oscillator
• CPU clock source
• Peripheral function clock source
About 1 MHz
Presence
Stopped
Note. Operating frequency must be 5.12 MHz, overall accuracy must be less than 150 ppm.
Clock Generation Circuit
The clock generation circuit contains two oscillator circuits as follows:
(1) Main clock oscillation circuit
(2) On-chip Oscillator (oscillation stop detect function)
Table 1.7.1 lists the clock generation circuit specifications. Figure 1.7.1 shows the clock generation circuit.
Figures 1.7.2 to 1.7.5 show the clock-related registers.
Table 1.7.1. Clock Generation Circuit Specifications