M37212 Mitsubishi, M37212 Datasheet - Page 112

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

112
A - D C o n t r o l R e g i s t e r
T i m e r 1 2 M o d e R e g i s t e r
b 7 b 6 b 5 b 4 b 3 b 2 b 1 b 0
b 7 b 6 b 5 b 4 b 3 b 2 b 1 b 0
0
M37212M4/M8–XXXSP, M37212M6–XXXSP/FP
6 , 7
6 , 7 N o t h i n g i s a s s i g n e d . T h e s e b i t s a r e w r i t e d i s a b l e b i t s .
t o
B
0
5
0
1
A - D c o n t r o l r e g i s t e r ( A D C ) [ A d d r e s s 0 0 E F
B
2
3
4
5 F i x t h i s b i t t o “ 0 . ”
T i m e r m o d e r e g i s t e r ( T 1 2 M ) [ A d d r e s s 0 0 F 4
N o t h i n g i s a s s i g n e d . T h e s e b i t s a r e w r i t e d i s a b l e b i t s .
W h e n t h e s e b i t s a r e r e e d o u t , t h e v a l u e s a r e “ 0 . ”
D - A c o n v e r t e r s e t b i t s
( A D C 0 t o A D C 5 )
T i m e r 1 c o u n t s o u r c e
s e l e c t i o n b i t 1 ( T 1 2 M 0 )
T i m e r 2 c o u n t s o u r c e
s e l e c t i o n b i t ( T 1 2 M 1 )
T i m e r 1 c o u n t
s t o p b i t ( T 1 2 M 2 )
T i m e r 2 c o u n t s t o p b i t
( T 1 2 M 3 )
T i m e r 2 i n t e r n a l c o u n t
s o u r c e s e l e c t i o n b i t 2
( T 1 2 M 4 )
W h e n t h e s e b i t s a r e r e a d o u t , t h e v a l u e s a r e “ 0 . ”
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
N a m e
N a m e
b 5
0
0
0
1
1
1
0 : f ( X
1 : f ( X
0 : I n t e r r u p t c l o c k s o u r c e
1 : E x t e r n a l c l o c k f r o m T I M 2 p i n
0 : C o u n t s t a r t
1 : C o u n t s t o p
0 : C o u n t s t a r t
1 : C o u n t s t o p
0 : f ( X
1 : T i m e r 1 o v e r f l o w
b 4
0
0
0
1
1
1
b 3
0
0
0
1
1
1
1 6
I N
I N
I N
]
F u n c t i o n s
b 2
0
0
0
1
1
1
) / 1 6
) / 4 0 9 6
) / 1 6
b 1
0
0
1
0
1
1
F u n c t i o n s
with ON-SCREEN DISPLAY CONTROLLER
b 0
0
1
0
1
0
1
: 1 / 1 2 8 V c c
: 3 / 1 2 8 V c c
: 5 / 1 2 8 V c c
: 1 2 3 / 1 2 8 V c c
: 1 2 5 / 1 2 8 V c c
: 1 2 7 / 1 2 8 V c c
1 6
MITSUBISHI MICROCOMPUTERS
]
M37212EFSP/FP
A f t e r r e s e t
Addresses 00F4
0
0
Address 00EF
A f t e r r e s e t
0
0
0
0
0
0
0
R W
R W
R —
R
R
R
R
R
R
R
R
—
W
W
W
W
W
W
W
Rev. 1.0
16
16