Fujitsu 8FX User Manual

MB95630H Series
MN702-00009-2v0-E FUJITSU SEMICONDUCTOR LIMITED 55
CHAPTER 3 CLOCK CONTROLLER
3.7 Overview of Prescaler
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
(F
CH
/2
7
, F
CH
/2
8
, F
CRH
/2
6
, F
CRH
/2
7
, F
MCRPLL
/2
6
, or F
MCRPLL
/2
7
) output from the time-base
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
CH
/2
7
, F
CH
/2
8
, F
CRH
/2
6
, F
CRH
/2
7
, F
MCRPLL
/2
6
, or F
MCRPLL
/2
7
) of the time-
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

Fujitsu 8FX Specifications

General

Brand	Fujitsu
Model	8FX
Category	Computer Hardware
Language	English