參數(shù)資料
型號: ST72T631K2M0
廠商: 意法半導(dǎo)體
英文描述: LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C
中文描述: 低速USB 8高達(dá)16K的內(nèi)存位微控制器系列,高達(dá)512字節(jié)RAM,8位ADC,水分散粒劑,定時(shí)器,SCI
文件頁數(shù): 82/109頁
文件大?。?/td> 857K
代理商: ST72T631K2M0
ST7263
82/109
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
Bits 6:0 =
CC6-CC0
7-bit clock divider.
These bits select the speed of the bus (F
SCL
) de-
pending on the I2C mode. They are not cleared
when the interface is disabled (PE=0).
– Standard mode (FM/SM=0): F
SCL
<= 100kHz
F
SCL
= f
CPU
/(2x([CC6..CC0]+2))
– Fast mode (FM/SM=1): F
SCL
> 100kHz
F
SCL
= f
CPU
/(3x([CC6..CC0]+2))
Note: The programmed F
SCL
assumes no load on
SCL and SDA lines.
I2C DATA REGISTER
(
DR)
Read / Write
Reset Value: 0000 0000 (00h)
Bits 7:0 =
D7-D0
8-bit Data Register.
These bits contains the byte to be received or
transmitted 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 next data bytes are received one by
one after reading the DR register.
I2C OWN ADDRESS REGISTER (OAR)
Read / Write
Reset Value: 0000 0000 (00h)
Bits 7:1 =
ADD7-ADD1
Interface address.
These bits define the I2C bus address of the inter-
face. They are not cleared when the interface is
disabled (PE=0).
Bit 0 =
ADD0
Address direction bit.
This bit is don’t care, the interface acknowledges
either 0 or 1. It is not cleared when the interface is
disabled (PE=0).
Note: Address 01h is always ignored.
7
0
FM/SM
CC6
CC5
CC4
CC3
CC2
CC1
CC0
7
0
D7
D6
D5
D4
D3
D2
D1
D0
7
0
ADD7
ADD6
ADD5
ADD4
ADD3
ADD2
ADD1
ADD0
相關(guān)PDF資料
PDF描述
ST72T631K2M1 LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C
ST72T631K4B0 LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C
ST72T631K4B1 LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C
ST72T631K4D0 LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C
ST72631K1B0 LOW SPEED USB 8-BIT MCU FAMILY with up to 16K MEMORY, up to 512 BYTES RAM, 8-BIT ADC, WDG, TIMER, SCI & I2C
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