參數(shù)資料
型號: M38049FFHP
廠商: Mitsubishi Electric Corporation
英文描述: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述: 單芯片8位CMOS微機(jī)
文件頁數(shù): 70/135頁
文件大?。?/td> 2055K
代理商: M38049FFHP
70
3803/3804 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Function
In conformity with Philips I
2
C-BUS
standard:
10-bit addressing format
7-bit addressing format
High-speed clock mode
Standard clock mode
In conformity with Philips I
2
C-BUS
standard:
Master transmission
Master reception
Slave transmission
Slave reception
16.1 kHz to 400 kHz (at
φ
= 4 MHz)
Table 10 Multi-master I
2
C-BUS interface functions
Item
Format
Communication mode
System clock
φ
= f(X
IN
)/2 (high-speed mode)
φ
= f(X
IN
)/8 (middle-speed mode)
MULTI-MASTER I
2
C-BUS INTERFACE
The 3804 group has the multi-master I
2
C-BUS interface.
The multi-master I
2
C-BUS interface is a serial communications cir-
cuit, conforming to the Philips I
2
C-BUS data transfer format. This
interface, offering both arbitration lost detection and a synchro-
nous functions, is useful for the multi-master serial
communications.
Figure 64 shows a block diagram of the multi-master I
2
C-BUS in-
terface and Table 10 lists the multi-master I
2
C-BUS interface
functions.
This multi-master I
2
C-BUS interface consists of the I
2
C slave ad-
dress registers 0 to 2, the I
2
C data shift register, the I
2
C clock
control register, the I
2
C control register, the I
2
C status register, the
I
2
C START/STOP condition control register, the I
2
C special mode
control register, the I
2
C special mode status register, and other
control circuits.
When using the multi-master I
2
C-BUS interface, set 1 MHz or
more to system clock
φ
.
Fig. 64 Block diagram of multi-master I
2
C-BUS interface
: Purchase of MITSUBISHI ELECTRIC CORPORATIONS I
2
C components conveys a license under the Philips I
2
C Patent Rights to use these components
an I
2
C system, provided that the system conforms to the I
2
C Standard Specification as defined by Philips.
SCL clock frequency
I
2
C
s
t
a
t
u
s
r
e
g
i
s
t
e
r
b7
b0
S
A
D
6 SAD5 S
A
D
4 SAD3 SAD2 SAD1SAD0 R
W
B
b7
b0
b7
M
S
T T
R
X B
B
PIN
AL AAS AD0 LRB
b0
S1
B
i
r
B
c
c
u
i
t
b
7
b
0
ACK
A
B
C
I
K
T
F
M
A
O
S
D
T
ECCR4 CCR3 CCR2 C
C
R
1 C
C
R
0
S
0
S2
S
0
D
0
2
S
I
S
I
2
C
r
e
i
S
s
T
t
e
A
r
R
T
/
S
T
O
P
c
o
n
d
i
t
i
o
n
c
o
n
t
r
o
l
g
S
I
P
S
S
C
4 S
S
C
3 S
S
C
2 S
S
C
1 S
S
C
0
b7
b0
C
T
I
S
S
T
S
E
LSAD
A
L
S
B
C
2
BC1
B
0
S
1
D
ES0
b
7
b
0
SPCF
S3
P
I
N
2
A
A
S
2 A
A
S
1
A
A
S
0
b7
b
0
S
P
C
F
L
S
3
D
PIN2
HD
PIN2
IN
H
S
L
A
DCON
I
2
C
s
p
e
c
i
a
l
m
o
d
e
c
o
n
t
r
o
l
r
e
g
i
s
t
e
r
I
2
C
s
p
e
c
i
a
l
m
o
d
e
s
t
a
t
u
s
r
e
g
i
s
t
e
r
I
2
C
s
l
a
v
e
a
d
d
r
e
s
s
r
e
g
i
s
t
e
r
s
0
t
o
2
N
e
c
o
l
i
i
s
e
i
n
u
a
t
i
r
m
c
t
i
o
n
i
Address comparator
Data
control
circuit
S
y
s
t
e
m
c
l
o
c
k
(
φ
)
Interrupt
generating
circuit
Interrupt request signal
(I
2
CIRQ)
B
i
t
c
o
u
n
t
e
r
C
c
c
l
o
n
r
c
c
t
u
k
r
i
o
i
o
t
l
I
n
t
e
r
n
a
l
d
a
t
a
b
u
s
Clock division
A
c
L
i
r
c
u
i
t
I
2
C clock control register
I
2
C control register
S
c
(
e
l
S
r
c
C
i
a
k
L
l
o
)
I
2
C
d
a
t
a
s
h
i
f
t
r
e
g
i
s
t
e
r
In
(
S
t
e
C
r
r
L
u
,
p
t
r
D
e
q
A
u
,
e
I
s
R
t
Q
)
s
i
g
n
a
l
S
In
g
c
t
e
n
c
r
e
u
r
u
r
i
t
p
t
t
i
n
e
i
r
a
g
Serial data
(SDA)
Noise
elimination
circuit
S2D
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