FMS7401 Fairchild Semiconductor, FMS7401 Datasheet - Page 62

• Manufacturer Part Number: FMS7401
• Description: Digital Power Controller
• Manufacturer: Fairchild Semiconductor

REV. 1.0.3 1/24/05
PRODUCT SPECIFICATION
CLOCK
SHIFT_OUT
LOAD
SHIFT_IN
S H I F T _
S H I F T _
PageWr
S
0x90
( i n w r i t e m o d e )
( i n r e
H I F T _ I N
L O A D ( G 3 )
O
O
a
d m o d e )
U T
U T
C
R E
32-bit Command = Page Write
L O
V C C
( G
( G
( G
( G
S
C
E
from address 0xC00
0x00
1
4
2
2
K
T
)
)
)
)
32 Clock
Cycles
1
0x00
1
1 0
0
-
b
T
i t O
1
Page 0
R E
Byte 1
(First)
S
p c
E
0 0
T
o d e
=
0
x
1
3
4
B
SHIFT_OUT (G2)
0
SHIFT_IN (G4)
Page 0
8 Clock
Cycles
Byte 2
1
CLOCK (G1)
1
A
A
: s
t
a
r t o
b
Figure 19. Programming Protocol
i t 3
8 Clock
f p
Page 0
Cycles
Byte 3
Figure 21. Page Mode Protocol
Figure 20. Serial Data Timing
1
r o
g
r
a
m m i n
T
g c y c l
DIS
b
e
i t 3
3
0
Continue with
Next Bytes in
2
the Page
c l
o
c
Valid
k
p
u
T
l s
T
DOS
HI
e
s
T
DIH
Check Ready/Busy
Valid
8 Clock
Byte 16
Cycles
Page 0
b
(Last)
i t
0
1
T
T
L O A D
T
DOH
LO
1
T
L O A D
2
2
PageWr
B
n d
Page Write
U S
0x90
Ready
c l
Y
o
c
l
32-bit Command = Page Write
o w
k
p
u
b
l s
y
B
from address 0xC10
e
U S
0x00
Y
32 Clock
T
Cycles
R E A D Y
0x10
R E A D Y
T
L O A D 3
Page 1
Byte 1
(First)
FMS7401L
T
L O A D
4
A
b
i t 3
1
62