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參數(shù)資料
| 型號： | M37212EF-XXXFP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80 |
| 文件頁數(shù)： | 17/67頁 |
| 文件大?。?/td> | 4380K |
| 代理商： | M37212EF-XXXFP |
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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
24
7
MST
0
I2C status register
(S1 : address 00D916)
General call detecting flag
Slave address comparison
Arbitration lost detecting flag
I2C-BUS interface interrupt
request bit
0 : Interrupt request issued
1 : No interrupt request
issued
Bus busy flag
Communication mode
TRX BB PIN AL AAS AD0 LRB
Note: These bit and flags can be read out but cannot
be written.
(6) START Condition Generating Method
When the ES0 bit of the I2C control register (address 00DA16) is “1,”
execute a write instruction to the I2C status register (address 00D916)
for setting the MST, TRX and BB bits to “1.” Then a START condi-
tion occurs. After that, the bit counter becomes “0002” and an SCL
for 1 byte is output. The START condition generating timing and BB
bit set timing are different in the standard clock mode and the high-
speed clock mode. Refer to Figure 19, the START condition generat-
ing timing diagram, and Table 4, the START condition/STOP condi-
tion generating timing table.
(7) STOP Condition Generating Method
When the ES0 bit of the I2C control register (address 00DA16) is “1,”
execute a write instruction to the I2C status register (address 00D916)
for setting the MST bit and the TRX bit to “1” and the BB bit to “0”.
Then a STOP condition occurs. The STOP condition generating tim-
ing and the BB flag reset timing are different in the standard clock
mode and the high-speed clock mode. Refer to Figure 20, the STOP
condition generating timing diagram, and Table 4, the START condi-
tion/STOP condition generating timing table.
Table 4. START condition/STOP condition generating timing
table
Item
Setup time
Hold time
Set/reset time
for BB flag
Standard clock mode
5.0
ms (20 cycles)
5.0
ms (20 cycles)
3.0
ms (12 cycles)
High-speed clock mode
2.5
ms (10 cycles)
2.5
ms (10 cycles)
1.5
ms (6 cycles)
Note: Absolute time at
φ = 4 MHz. The value in parentheses de-
notes the number of
φ cycles.
Fig. 17. Structure of I2C status register
Fig. 18. Interrupt request signal generating timing
Fig. 19. START condition generating timing diagram
Fig. 20. STOP condition generating timing diagram
I2C status register
write signal
Set time for
BB flag
Hold time
Setup
time
SCL
SDA
BB flag
Setup
time
SCL
PIN
IICIRQ
I2C status register
write signal
Reset time for
BB flag
Hold time
Setup
time
SCL
SDA
BB flag
Last receive bit (Note)
0 : Last bit = “0”
1 : Last bit = “1”
(Note)
0 : No general call detected
1 : General call detected
flag (Note)
0 : Address disagreement
1 : Address agreement
(Note)
0 : Not detected
1 : Detected
0 : Bus free
1 : Bus busy
specification bits
00 : Slave receive mode
01 : Slave transmit mode
10 : Master receive mode
11 : Master transmit mode
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M37212EF-XXXSP | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP52 |
| M37221M6-XXXSP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP42 |
| M37224M3-XXXSP | 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42 |
| M37270MF-XXXSP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP64 |
| M37273MFH-XXXSP | 8-BIT, MROM, 8.1 MHz, MICROCONTROLLER, PDIP52 |
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: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: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: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: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: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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