M37212 Mitsubishi, M37212 Datasheet - Page 32

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

8.6.1 I
The I
register to store receive data and write transmit data.
When transmit data is written into this register, it is transferred to the
outside from bit 7 in synchronization with the SCL clock, and each
time one-bit data is output, the data of this register are shifted one bit
to the left. When data is received, it is input to this register from bit 0
in synchronization with the SCL clock, and each time one-bit data is
input, the data of this register are shifted one bit to the left.
The I
ESO bit of the I
counter is reset by a write instruction to the I
When both the ESO bit and the MST bit of the I
(address 00D9
the I
ter is always enabled regardless of the ESO bit value.
Note: To write data into the I
Fig. 8.6.2 Data Shift Register
32
2
2
C data shift register. Reading data from the I
2
“0” (slave mode), keep an interval of 8 machine cycles or more.
C data shift register is in a write enable status only when the
C data shift register (S0 : address 00D7
2
C Data Shift Register
16
2
C control register (address 00DA
) are “1,” the SCL is output by a write instruction to
I C D a t a S h i f t R e g i s t e r
2
b 7 b 6 b 5 b 4 b 3 b 2 b 1 b 0
2
C data shift register after setting the MST bit to
M37212M4/M8–XXXSP, M37212M6–XXXSP/FP
2
N o t e :
C data shift register.
t o
0
7
B
I
16
2
2
2
C d a t a s h i f t r e g i s t e r ( S 0 ) [ A d d r e s s 0 0 D 7
C data shift regis-
) is an 8-bit shift
16
C status register
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
D 0 t o D 7
T o w r i t e d a t a i n t o t h e I C d a t a s h i f t r e g i s t e r a f t e r s e t t i n g t h e M S T b i t t o
“ 0 ” ( s l a v e m o d e ) , k e e p a n i n t e r v a l o f 8 m a c h i n e c y c l e s o r m o r e .
) is “1.” The bit
N a m e
T h i s i s a n 8 - b i t s h i f t r e g i s t e r t o s t o r e
r e c e i v e d a t a a n d w r i t e t r a n s m i t d a t a .
2
F u n c t i o n s
1 6
]
with ON-SCREEN DISPLAY CONTROLLER
MITSUBISHI MICROCOMPUTERS
I n d e t e r m i n a t e
A f t e r r e s e t
M37212EFSP/FP
R W
R W
Rev. 1.0