Fujitsu MB89140 Series Hardware Manual page 41

MAIN/SUBCLOCK
CONTROL BLOCK
HARDWARE CONFIGURATION
Single Clock
The single clock can be selected by the mask option. In the single clock op-
eration, the functions are the same as those of the double clock module ex-
cept that the subclock mode cannot be set. In the single-circuit clock opera-
tion, the P71/X1A and P70/X0A function as input ports.
State transition diagram
Main STOP
Main stop
Oscillation stabilization
waiting of main clock
(1)
Power-on
(1) When power-on reset
option selected
(2) When power-on reset
option not selected
(3) After oscillation stabilized
(4) Set STP bit to 1.
(5) Set SLP bit to 1.
(6) External reset when power-on reset option not selected
(7) External reset or interrupt when power-on reset option selected
(8) External reset or interrupt
2-21
Main SLEEP
Main oscillate
(6)
(5)
(4)
(7)
Main RUN
Main oscillate
(3)
(2)
(8)