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參數(shù)資料
| 型號(hào)： | M37373M8-XXXSP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP52 |
| 封裝： | 0.600 INCH, 1.778 MM PITCH, SHRINK, PLASTIC, DIP-52 |
| 文件頁數(shù)： | 46/110頁 |
| 文件大?。?/td> | 1537K |
| 代理商： | M37373M8-XXXSP |
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40
MITSUBISHI MICROCOMPUTERS
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37273M8-XXXSP
M37273E8SP
Fig. 38. I2C Control Register
(5) I2C Status Register
The I2C status register (address 00F816) controls the I2C-BUS inter-
face status. The low-order 4 bits are read-only bits and the high-
order 4 bits can be read out and written to.
s Bit 0: Last Receive Bit (LRB)
This bit stores the last bit value of received data and can also be
used for ACK receive confirmation. If ACK is returned when an ACK
clock occurs, the LRB bit is set to “0.” If ACK is not returned, this bit
is set to “1.” Except in the ACK mode, the last bit value of received
data is input. The state of this bit is changed from “1” to “0” by execut-
ing a write instruction to the I2C data shift register (address 00F616).
s Bit 1: General Call Detecting Flag (AD0)
This bit is set to “1” when a general callV whose address data is all “0”
is received in the slave mode. By a general call of the master device,
every slave device receives control data after the general call. The
AD0 bit is set to “0” by detecting the STOP condition or START con-
dition.
VGeneral call: The master transmits the general call address “0016”
to all slaves.
s Bit 2: Slave Address Comparison Flag (AAS)
This flag indicates a comparison result of address data.
In the slave receive mode, when the 7-bit addressing format is
selected, this bit is set to “1” in one of the following conditions.
The address data immediately after occurrence of a START
condition matches the slave address stored in the high-order
7 bits of the I2C address register (address 00F716).
A general call is received.
In the slave reception mode, when the 10-bit addressing format is
selected, this bit is set to “1” with the following condition.
When the address data is compared with the I2C address
register (8 bits consists of slave address and RBW), the first
bytes match.
The state of this bit is changed from “1” to “0” by executing a write
instruction to the I2C data shift register (address 00F616).
Fig. 37. Connection Port Control by BSEL0 and BSEL1
“0”
“1” BSEL0
SCL1/P11
SCL2/P12
“0”
“1” BSEL1
“0”
“1” BSEL0
SDA1/P13
SDA2/P14
“0”
“1” BSEL1
Multi-master
I2C-BUS
interface
SCL
SDA
7
BSEL1 BSEL0
10 BIT
SAD
ALS ESO BC2 BC1 BC0
0
Connection control bits
between I2C-BUS
interface and ports
Connection port
0
0 : None
0
1 : SCL1, SDA1
1
0 : SCL2, SDA2
1
1 : SCL1, SDA1,
SCL2, SDA2
I2C control register
(S1D : address 00F9 16)
Bit counter (Number of
transmit/receive bits)
b2 b1 b0
0 0 0 : 8
0 0 1 : 7
0 1 0 : 6
0 1 1 : 5
1 0 0 : 4
1 0 1 : 3
1 1 0 : 2
1 1 1 : 1
I2C-BUS interface use
enable bit
0 : Disabled
1 : Enabled
Data format selection bit
0 : Addressing format
1 : Free data format
Addressing format
selection bit
0 : 7-bit addressing
format
1 : 10-bit addressing
format
Note: When using multi-master I2C-BUS interface, set bits 3 and
4 of the serial I/O mode register (address 021316) to “1.”
Moreover, set the corresponding direction register to “1” to
use the port as multi-master I2C-BUS interface.
b7 b6
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M373T WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
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| M37409M2-XXXSP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE CHIP 8 BIT MICROCOMPUTER |
| M3740B | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4 SIREN |
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