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MB95630H Series
3.7
Overview of Prescaler
The prescaler generates the count clock source to be supplied to various
peripheral functions from the machine clock (MCLK) and the count clock
output from the time-base timer.
■ Prescaler
The prescaler generates the count clock source to be supplied to various peripheral functions
from the machine clock (MCLK) with which the CPU operates and from the count clock
7
(F
/2
CH
timer. The count clock source is a clock whose frequency is divided by the prescaler or a
buffered clock. The peripheral functions listed below use the clock whose frequency is divided
by the prescaler as the count clock source.
The prescaler has no control register and always operates with the machine clock (MCLK) and
the count clock (F
base timer.
•
8/16-bit composite timer
•
8/10-bit A/D converter
•
8/16-bit PPG
•
16-bit PPG timer
•
16-bit reload timer
•
UART/SIO dedicated baud rate generator
MN702-00009-2v0-E
8
6
, F
/2
, F
/2
, F
CH
CRH
CRH
7
8
/2
, F
/2
, F
CH
CH
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER 3 CLOCK CONTROLLER
7
6
/2
, F
/2
, or F
MCRPLL
MCRPLL
6
7
/2
, F
/2
, F
CRH
CRH
MCRPLL
3.7 Overview of Prescaler
7
/2
) output from the time-base
6
7
/2
, or F
/2
) of the time-
MCRPLL
55
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