參數(shù)資料
型號： MB90F372PMT-G
廠商： Fujitsu Limited
英文描述： 16-bit Proprietary Microcontroller
中文描述： 16位微控制器專有
文件頁數(shù)： 58/153頁
文件大小： 1573K
代理商： MB90F372PMT-G
MB90370 Series
58
8.
I
2
C
The I
2
C (Inter IC Bus) interface is a simple structure bidirectional bus consisting of two wires : a serial data line
(SDA) and a serial clock line (SCL). Among the devices connected with these two wires, information is transmitted
to one another. By recognizing the unique address of each device, it can operate as a transmitting or receiving
device in accordance with the function of each device. Among these devices, the master/slave relation is
established.
The I
2
C interface can connect two or more devices to the bus provided the upper limit of the bus capacitance
does not exceed 400 pF. It is a full-fledged multi-master bus equipped with collision detection and communication
adjustment procedures designed to avoid the destruction of data if two or more masters attempt to start data
transfer simultaneously.
The communication adjustment procedure permits only one master to control the bus when two or more masters
attempt to control the bus so that messages are not lost or the contents of messages are not changed. Multi-
master means that multiple masters attempt to control the bus simultaneously without losing messages.
This I
2
C interface includes MCU standby mode wake-up function, and a CRC-8 calculator that performs automatic
Packet Error Code (PEC) generation and verification.
(1) Register configuration of I
2
C
(Continued)
7
6
5
4
3
2
1
0
Address: 000082
H
Address: 000081
H
15
14
13
12
11
10
9
8
I
2
C Bus Status Register (Lower)
I
2
C Bus Control Register (Upper)
IBSRL
IBCRH
Initial value
Read/write
Bit number
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
Initial value
Read/write
Bit number
BER
MSS
ACK
GCAA
INTE
INT
Address: 000084
H
7
6
5
4
3
2
1
0
I
2
C Data Register
IDAR
Bit number
R/W
X
R/W
X
R/W
X
R/W
X
R/W
X
R/W
X
R/W
X
R/W
X
Initial value
Read/write
D7
D6
D5
D4
D3
D2
D1
D0
R/W
0
BEIE
R
0
BB
R
0
RSC
R
0
AL
R
0
LRB
R
0
TRX
R
0
AAS
R
0
GCA
R
0
FBT
R/W
0
SCC
7
6
5
4
3
2
1
0
Address: 000080
H
I
2
C Bus Control Register (Lower)
IBCRL
Initial value
Read/write
Bit number
R/W
0
PECE
R/W
0
LBT
R/W
0
WUE
Address: 000083
H
15
14
13
12
11
10
9
8
I
2
C Bus Status Register (Upper)
IBSRH
Bit number
R/W
0
R/W
0
R/W
0
R/W
0
R/W
0
Initial value
Read/write
WUF
PMATCH
-
-
-
-
-
-
-
-
-
-
-
-
TDR
TCR
MTR
STR
RES
R/W
0
0
R
相關(guān)PDF資料
PDF描述
MB90F372 16-bit Proprietary Microcontroller
MB90F372PFF-G 16-bit Proprietary Microcontroller
MB90F377 16-bit Proprietary Microcontroller
MB90F377PFF-G 16-bit Proprietary Microcontroller
MB90F378 16-bit Proprietary Microcontroller
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