参数资料
型号: M37221MAH-XXXFP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDSO42
封装: 0.450 INCH, 0.80 MM INCH, PLASTIC, SSOP-42
文件页数: 111/112页
文件大小: 1207K
代理商: M37221MAH-XXXFP
98
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
M37221M4H/M6H/M8H/MAH–XXXSP/FP
M37221EASP/FP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
Address 00D916
Address 00DA16
b7 b6 b5 b4 b3 b2 b1 b0
I2C status register (S1) [Address 00D916]
I2C Status Register
0
3
4
5
6, 7
b7 b6
0
0 : Slave recieve mode
0
1 : Slave transmit mode
1
0 : Master recieve mode
1
1 : Master transmit mode
1
2
0
1
0
B
Name
Functions
After reset R W
Communication mode
specification bits
(TRX, MST)
0 : Bus free
1 : Bus busy
Bus busy flag (BB)
0 : Interrupt request issued
1 : No interrupt request issued
I2C-BUS interface interrupt
request bit (PIN)
0 : Not detected
1 : Detected
Arbitration lost detecting flag
(AL) (See note)
0 : Address mismatch
1 : Address match
Slave address comparison
flag (AAS) (See note)
0 : No general call detected
1 : General call detected
General call detecting flag
(AD0) (See note)
0 : Last bit = “0 ”
1 : Last bit = “1 ”
Last receive bit (LRB)
(See note)
Note : These bits and flags can be read out, but cannnot be written.
Indeterminate R —
R —
RW
R W
0
R W
(See note)
b7 b6 b5 b4 b3 b2 b1 b0
0
to
2
Bit counter
(Number of transmit/recieve
bits)
(BC0 to BC2)
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
3
I2C-BUS interface use
enable bit (ESO)
0: Disabled
1: Enabled
4
Data format selection
bit(ALS)
0: Addressing format
1: Free data format
5
Addressing format selection
bit (10BIT SAD)
0: 7-bit addressing format
1: 10-bit addressing format
6, 7 Connection control bits
between I C-BUS interface
and ports
(BSEL0, BSEL1)
b7 b6 Connection port (See note)
0
0: None
0
1: SCL1, SDA1
1
0: SCL2, SDA2
1
1: SCL1, SDA1, SCL2, SDA2
0
I2C control register (S1D) [Address 00DA16]
I2C Control Register
B
Name
Functions
After reset R W
2
R W
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