參數(shù)資料
型號： ST72254G1B6
英文描述： 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY. ADC. 16-BIT TIMERS. SPI.
中文描述： 8位單電壓閃存微控制器。 ADC的。 16位定時器。的SPI。
文件頁數(shù)： 123/140頁
文件大小： 1349K
代理商： ST72254G1B6
ST72104G, ST72215G, ST72216G, ST72254G
83/140
I2C BUS INTERFACE (Cont’d)
I2C CLOCK CONTROL REGISTER (CCR)
Read / Write
Reset Value: 0000 0000 (00h)
Bit 7 = FM/SM
Fast/Standard I2C mode.
This bit is set and cleared by software. It is not
cleared when the interface is disabled (PE=0).
0: Standard I2C mode
1: Fast I2C mode
Bit 6:0 = CC6-CC0
7-bit clock divider.
These bits select the speed of the bus (FSCL) de-
pending on the I2C mode. They are not cleared
when the interface is disabled (PE=0).
– Standard mode (FM/SM=0): FSCL <= 100kHz
FSCL = FCPU/(2x([CC6..CC0]+2))
– Fast mode (FM/SM=1): FSCL > 100kHz
FSCL = FCPU/(3x([CC6..CC0]+2))
Note: The programmed FSCL assumes no load on
SCL and SDA lines.
I2C DATA REGISTER (DR)
Read / Write
Reset Value: 0000 0000 (00h)
Bit 7:0 = D7-D0
8-bit Data Register.
These bits contain the byte to be received or trans-
mitted on the bus.
– Transmitter mode: Byte transmission start auto-
matically when the software writes in the DR reg-
ister.
– Receiver mode: the first data byte is received au-
tomatically in the DR register using the least sig-
nificant bit of the address.
Then, the following data bytes are received one
by one after reading the DR register.
70
FM/SM
CC6
CC5
CC4
CC3
CC2
CC1
CC0
70
D7
D6
D5
D4
D3
D2
D1
D0
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相關代理商/技術參數(shù)
參數(shù)描述
ST72254G1B6/XXX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, IC INTERFACES
ST72254G1B7 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY. ADC. 16-BIT TIMERS. SPI.
ST72254G1B7/XXX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, IC INTERFACES
ST72254G1M1 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY. ADC. 16-BIT TIMERS. SPI.
ST72254G1M1/XXX 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, IC INTERFACES
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