參數(shù)資料
型號(hào): ST72C104G2B1
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(shí)器。的SPI。
文件頁數(shù): 113/140頁
文件大?。?/td> 1349K
代理商: ST72C104G2B1
ST72104G, ST72215G, ST72216G, ST72254G
74/140
I2C BUS INTERFACE (Cont’d)
Acknowledge may be enabled and disabled by
software.
The I2C interface address and/or general call ad-
dress can be selected by software.
The speed of the I2C interface may be selected
between Standard (0-100KHz) and Fast I2C (100-
400KHz).
SDA/SCL Line Control
Transmitter mode: the interface holds the clock
line low before transmission to wait for the micro-
controller 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 (Fscl) is controlled by a pro-
grammable clock divider which depends on the
I2C bus mode.
When the I2C cell is enabled, the SDA and SCL
ports must be configured as floating inputs. 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 44. I2C Interface Block Diagram
DATA REGISTER (DR)
DATA SHIFT REGISTER
COMPARATOR
OWN ADDRESS REGISTER 1 (OAR1)
CLOCK CONTROL REGISTER (CCR)
STATUS REGISTER 1 (SR1)
CONTROL REGISTER (CR)
CONTROL LOGIC
STATUS REGISTER 2 (SR2)
INTERRUPT
CLOCK CONTROL
DATA CONTROL
SCL or SCLI
SDA or SDAI
OWN ADDRESS REGISTER 2 (OAR2)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST72C104G2B6 功能描述:8位微控制器 -MCU Flash 8K SPI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
ST72C104G2M6 功能描述:8位微控制器 -MCU Flash 8K SPI RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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