參數(shù)資料
型號: ST7FLCD1
廠商: 意法半導體
英文描述: 8-bit MCU for LCD Monitors with 60 KBytes Flash, 2 KBytes RAM, 2 DDC Ports and Infrared Controller
中文描述: 8位微控制器的液晶顯示器為60千字節(jié)閃存,2千字節(jié)RAM,2個DDC的港口和紅外線控制器
文件頁數(shù): 53/95頁
文件大小: 633K
代理商: ST7FLCD1
53/95
ST7FLCD1
I2C Single-Master Bus Interface
SDA/SCL Line Control
Transmitter mode
: The interface holds the clock line low before transmission to wait for the
microcontroller to write the byte in the Data Register.
Receiver mode
: The interface holds the clock line low after reception to wait for the microcontroller
to read the byte in the Data Register.
The SCL frequency (f
SCL
) is controlled by a programmable clock divider which depends on the I2C
bus mode.
When the I2C cell is enabled, the SDA and SCL ports must be configured as a floating open-drain
output or a floating input. In this case, the value of the external pull-up resistor used depends on the
application.
When the I2C cell is disabled, the SDA and SCL ports revert to being standard I/O port pins.
Figure 28: I2C Bus Protocol
Figure 29: I2C Interface Block Diagram
SCL
SDA
1
2
8
9
MSB
ACK
Stop Condition
Start Condition
Data Register (DR)
Data Shift Register
Clock Control Register (CCR)
Status Register (SR)
Control Register (CR)
SDAI
SCLI
Interrupt
Clock Control
Data Control
SCL
SDA
Control Logic
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