參數(shù)資料
型號： ST52510F3M6
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： MICROCONTROLLER, PDSO20
封裝： SOP-20
文件頁數(shù)： 132/136頁
文件大?。?/td> 3335K
代理商： ST52510F3M6
Obsolete
Product(s)
- Obsolete
Product(s)
1: Standard I2C Mode (recommended up to
100 kHz)
0: Fast I2C Mode (recommended up to 400
kHz)
Bit 6-0: CC6-CC0 7-bit clock divider
These bits select the speed of the bus (FSCL)
depending on the I2C mode. They are not
cleared when the interface is disabled
(PE=0). The speed can be computed as
follows:
– Standard mode (FM/SM=1): FSCL <= 100kHz
FSCL = fCPU/(3x[CC6..CC0]+11)
– Fast mode (FM/SM=0): FSCL > 100kHz
FSCL = fCPU/(2x[CC6..CC0]+9)
Warning: For safety reason, CC6-CC0 bits must
be configured with a value >= 3 for the Standard
mode and >=2 for the Fast mode.
I2C Own Address Register 1 (I2C_OAR1)
Configuration Register 18 (012h) Read/Write
Reset Value: 0000 0000 (00h)
7-bit Addressing Mode
bit 7-1: ADD7-ADD1 Interface address.
These bits define the I2C bus address of the
interface. 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.
10-bit Addressing Mode
bit 7-0: ADD7-ADD0 Interface address.
These are the least significant bits of the I2C
bus address of the interface. They are not
cleared when the interface is disabled
(PE=0).
I2C Own Address Register 2 (I2C_OAR2)
Configuration Register 19 (013h) Read/Write
Reset Value: 0000 0000 (00h)
Bit 7-3: Not Used
bit 2-1: ADD9-ADD8 Interface address.
These are the most significant bits of the I2C
bus address of the interface (10-bit mode
only). They are not cleared when the
interface is disabled (PE=0).
Bit 0: Reserved, it must be left to 0.
14.5.2 I2C Interface Input Registers.
I2C Data Input Register (I2C_IN)
Input Register 6 (06h) Read only
Reset Value: 0000 0000 (00h)
bit 7-0: I2CDI7-I2CDI0 Received data.
These bits contain the byte to be received from the
bus in Receiver mode: the first data byte is
received automatically in the I2C_IN register using
the least significant bit of the address.
Then, the next data bytes are received one by one
after reading the I2C_IN register.
I2C Status Register 1 (I2C_SR1)
Input Register 7 (07h) Read only
Reset Value: 0000 0000 (00h)
70
ADD7
ADD6
ADD5
ADD4
ADD3
ADD2
ADD1
ADD0
72
0
-
ADD9
ADD8
-
70
I2CDI7
I2CDI6
I2CDI5
I2CDI4
I2CDI3
I2CDI2
I2CDI1
I2CDI0
70
EVF
ADD10
TRA
BUSY
BTF
ADSL
M/SL
SB
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