參數(shù)資料
型號(hào)： M37212EF-XXXSP
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP52
封裝： 0.600 INCH, 1.78 MM PITCH, PLASTIC, DIP-52
文件頁(yè)數(shù)： 15/67頁(yè)
文件大?。?/td> 4380K
代理商： M37212EF-XXXSP
MITSUBISHI MICROCOMPUTERS
M37212M4-XXXSP, M37212M6-XXXSP/FP
M37212EF-XXXSP/FP, M37212EFSP/FP
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
and ON-SCREEN DISPLAY CONTROLLER
22
(5) I2C Status Register
The I2C status register (address 00D916) 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 00D716).
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 agrees with the slave address stored in the high-order
7 bits of the I2C address register (address 00D816).
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 consisted of slave address and RBW), the first
bytes agree.
The state of this bit is changed from “1” to “0” by executing a write
instruction to the I2C data shift register (address 00D716).
Fig. 15. Connection port control by BSEL0 and BSEL1
Fig. 16. Structure of I2C control register
“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
ES0 BC2 BC1 BC0
0
Connection control bits
between I2C-BUS
interface and ports
b7 b6 Connection port
0
0 : None
0
1 : SCL1, SDA1
1
0 : SCL2, SDA2
1
1 : SCL1, SDA1,
SCL2, SDA2
I2C control register
(S1D : address 00DA16)
Bit counter (Number of
transmit/receive bits)
b2 b1 b0
0
0 : 8
0
1 : 7
0
1
0 : 6
0
1
1 : 5
1
0
0 : 4
1
0
1 : 3
1
0 : 2
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
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M37212M4 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37212M4-054SP 制造商:MITSUBISHI 制造商全稱(chēng):Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37212M4-XXXSP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37212M6-XXXFP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
M37212M6-XXXSP 制造商:RENESAS 制造商全稱(chēng):Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
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