FUJITSU F2MC-8L F202RA User Manual
Page 36
20
CHAPTER 2 HANDLING DEVICES
Figure 2.1-1 Operation Sequences after Power-on Reset between Product Types
As shown in Figure 2.1-1 , the start of CPU operation of a product with a step-down circuit is slower than
that of the product without a step-down circuit. This is because time is required for the step-down circuit to
stabilize prior to normal operation of the step-down circuit.
O
s
cill
a
tion
s
t
ab
iliz
a
tion
w
a
it time (2
1
8
/F
CH
)
Power
su
pply (V
CC
)
S
tep-down circ
u
it
s
t
ab
iliz
a
tion time (2
17
/F
CH
) +
O
s
cill
a
tion
s
t
ab
iliz
a
tion w
a
it time (2
1
8
/F
CH
)
CPU oper
a
tion of
prod
u
ct with
a
s
tep-down
circ
u
it (MB
8
9F202/F202RA)
CPU oper
a
tion of
prod
u
ct witho
u
t
a
s
tep-down circ
u
it
(MB
8
9202
a
nd MB
8
9V201)
S
t
a
rt of CPU oper
a
tion of
prod
u
ct witho
u
t
a
s
tep-down
circ
u
it (re
s
et vector)
S
t
a
rt of the CPU oper
a
tion of
prod
u
ct with
a
s
tep-down
circ
u
it (re
s
et vector)
F
CH
: M
a
in o
s
cill
a
tion fre
qu
ency