177
Clock Generator
Chapter 4
Preliminary User’s Manual U17566EE1V2UM00
4.3.2
Clock Generator state transistions
(1)
VBCLK state transitions
SSCG
V
B
CL
K
=
S
S
CCL
K
WATCH mode
Mai
n
OSC
=
unchanged
/of
f
SubOSC =
on
Ri
ngOSC
= on/
o
ff
PSM
[1:0
] =
00
B
PSM
[1:
0
] =
10
B
PSM
ent
ry
PSM
ent
ry
PLL
VBC
LK =
PLLC
LK
(x4
o
r
x8)
Sub-clock
VBC
L
K =
SBC
L
K
PC
C
.SO
SC
P =
0:
S
B
CLK
=
ROCLK
1
: SBC
L
K
=
SO
C
L
K
MainOSC
PCC write
prohibite
d
VBC
L
K =
M
O
C
L
K
MainOSC
PCC wr
it
e
p
e
rmitte
d
VBC
L
K =
M
O
C
L
K
IDLE m
o
de
Mai
n
OSC
=
unchanged
/o
ff
SubOSC =
on
RingOSC
=
on
/off
Sub-WATCH mode
MainOSC = on/
o
ff
SubOSC =
on
Rin
g
OS
C
=
o
n
/o
ff
STOP mode
MainOSC = off
SubOSC =
on
RingOSC
=
on
/off
PSM
[1:
0] =
01
B
PSM
ent
ry
PSM
ent
ry
PSM
ent
ry
Wake-
u
p
OSCDIS =
1
Reset
CLS = 1
SOSCP = 0
OS
CDIS
= 0
Wa
k
e-u
p
PSM
[1
:0]
=
11
B
VBCLK states
C
L
S =
0
,
C
K
S
[1:
0]
=
1
x
B
CL
S
= 0, CK
S
[1
:0
] =
0
1
B
C
L
S =
0, C
KS[1
:0
]
=
00
B
OS
CDIS
= 1
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