M37212 Mitsubishi, M37212 Datasheet - Page 107

• Manufacturer Part Number: M37212
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
• Manufacturer: Mitsubishi

Rev. 1.0
S e r i a l I / O M o d e R e g i s t e r
I
b 7 b 6 b 5 b 4 b 3 b 2 b 1 b 0
2
C C l o c k C o n t r o l R e g i s t e r
b 7 b 6 b 5 b 4 b 3 b 2 b 1 b 0
0
M37212M4/M8–XXXSP, M37212M6–XXXSP/FP
0 , 1 I n t e r n a l s y n c h r o n o u s
B
2
3
5
6
7
4 F i x t h i s b i t t o “ 0 . ”
S e r i a l I / O m o d e r e g i s t e r ( S M ) [ A d d r e s s 0 0 D C
N o t e : A t 4 0 0 k H z i n t h e h i g h - s p e e d c l o c k m o d e , t h e d u t y i s a s b e l o w .
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
t o
B
c l o c k s e l e c t i o n b i t s
( S M 0 , S M 1 )
S y n c h r o n o u s c l o c k
s e l e c t i o n b i t ( S M 2 )
S e r i a l I / O p o r t
s e l e c t i o n b i t ( S M 3 )
T r a n s f e r d i r e c t i o n
s e l e c t i o n b i t ( S M 5 )
S e r i a l i n p u t p i n
s e l e c t i o n b i t ( S M 6 )
N o t h i n g i s a s s i g n e d . T h i s b i t i s a w r i t e d i s a b l e b i t .
W h e n t h i s b i t i s r e a d o u t , t h e v a l u e i s “ 0 . ”
0
4
5
6
7
I
2
C c l o c k c o n t r o l r e g i s t e r ( S 2 ) [ A d d r e s s 0 0 D B
S C L f r e q u e n c y c o n t r o l b i t s
( C C R 0 t o C C R 4 )
S C L m o d e
( F A S T M O D E )
A C K b i t
( A C K B I T )
A C K c l o c k b i t
( A C K )
s p e c i f i c a t i o n b i t
“ 0 ” p e r i o d : “ 1 ” p e r i o d = 3 : 2
I n t h e o t h e r c a s e s , t h e d u t y i s a s b e l o w .
“ 0 ” p e r i o d : “ 1 ” p e r i o d = 1 : 1
N a m e
N a m e
b 1 b 0
0 : I n p u t s i g n a l f r o m S
1 : I n p u t s i g n a l f r o m S
0 : E x t e r n a l c l o c k
1 : I n t e r n a l c l o c k
0 : P 4
1 : S
0 : L S B f i r s t
1 : M S B f i r s t
0 0 : f ( X
0 1 : f ( X
1 0 : f ( X
1 1 : f ( X
S e t u p v a l u e o f
C C R 4 – C C R 0
0 : S t a n d a r d c l o c k m o d e
1 : H i g h - s p e e d c l o c k m o d e
0 : A C K i s r e t u r n e d .
1 : A C K i s n o t r e t u r n e d .
0 : N o A C K c l o c k
1 : A C K c l o c k
O U T ( / I N )
0 0 t o 0 2
0
1 D
, P 4
0 3
0 4
0 5
0 6
1 E
1 F
I N
I N
I N
I N
) / 4
) / 1 6
) / 3 2
) / 6 4
1
, S
F u n c t i o n s
5 0 0 / C C R v a l u e 1 0 0 0 / C C R v a l u e
S t a n d a r d c l o c k
S e t u p d i s a b l e d S e t u p d i s a b l e d
S e t u p d i s a b l e d
S e t u p d i s a b l e d
C L K
1 6
( a t
]
F u n c t i o n s
m o d e
8 3 . 3
1 7 . 2
1 6 . 6
1 6 . 1
1 0 0
with ON-SCREEN DISPLAY CONTROLLER
= 4 M H z , u n i t : k H z )
1 6
]
I N
O U T
MITSUBISHI MICROCOMPUTERS
p i n .
4 0 0 ( S e e n o t e )
H i g h s p e e d
c l o c k m o d e
p i n .
3 4 . 5
3 3 . 3
3 2 . 3
3 3 3
2 5 0
1 6 6
A f t e r r e s e t R W
M37212EFSP/FP
A f t e r r e s e t R W
0
0
0
0
0
0
0
0
0
0
0
R W
R W
R W
R W
R W
R W
R —
Address 00DB
Address 00DC
R W
R W
R W
R W
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