MB90800 Datasheet, PDF (55/88 Pages) Fujitsu Component Limited. – 16-bit Proprietary Microcontroller CMOS

MB90800 Series
14. Clock
The clock generator controls operation of the internal clock which is the operation clock for the CPU and peripheral
devices. This internal clock is referred to as machine clock and its one cycle as machine cycle. In addition, the
clock generated by original oscillation is referred to as oscillation clock and that by internal PLL oscillation as
PLL clock.
(1) Register list
Clock selection register (CKSCR)
0000A1H
15
SCM
14
MCM
13
WS1
( R ) ( R ) (R/W)
(1) (1) (1)
12
WS0
(R/W)
(1)
11
SCS
(R/W)
(1)
10
MCS
(R/W)
(1)
9
8
CS1 CS0
(R/W) ( R/W )
(0) (0)
Initial Value
55