Fujitsu FR81S User Manual
CHAPTER 52: CLOCK MONITOR
7. Q&A
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : CLOCK MONITOR
FUJITSU SEMICONDUCTOR CONFIDENTIAL
12
7.2. How Do I Select the Output Frequency?
Selection of the output frequency is shown.
Use the output frequency prescaler bits (CMCFG: CMPRE3 to CMPRE0).
Clock division
ratio
When output frequency
(Example)
HCLK is selected
Output frequency prescaler
(CMCFG: CMPRE3 to CMPRE0)
HCLK=32MHz
HCLK=40MHz
1/2
16.0MHz
20.0MHz
Set to 0001
B
1/3
10.7MHz
13.3MHz
Set to 0010
B
1/4
8.0MHz
10.0MHz
Set to 0011
B
1/8
4.0MHz
5.0MHz
Set to 0111
B
1/15
2.1MHz
2.7MHz
Set to 1110
B
1/16
2.0MHz
2.5MHz
Set to 1111
B
MB91520 Series
MN705-00010-1v0-E
2207