参数资料
型号: ST72F321J9T7
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
封装: 10 X 10 MM, PLASTIC, TQFP-44
文件页数: 27/176页
文件大小: 1112K
代理商: ST72F321J9T7
ST72321J
122/176
I2C BUS INTERFACE (Cont’d)
I
2C OWN ADDRESS REGISTER (OAR1)
Read / Write
Reset Value: 0000 0000 (00h)
7-bit Addressing Mode
Bit 7:1 = ADD[7:1]
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.
10-bit Addressing Mode
Bit 7:0 = ADD[7:0]
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).
I
2C OWN ADDRESS REGISTER (OAR2)
Read / Write
Reset Value: 0100 0000 (40h)
Bit 7:6 = FR[1:0]
Frequency bits.
These bits are set by software only when the inter-
face is disabled (PE=0). To configure the interface
to I2C specifed delays select the value corre-
sponding to the microcontroller frequency FCPU.
Bit 5:3 = Reserved
Bit 2:1 = ADD[9:8]
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.
70
ADD7
ADD6
ADD5
ADD4
ADD3
ADD2
ADD1
ADD0
70
FR1
FR0
0
ADD9
ADD8
0
fCPU
FR1
FR0
< 6 MHz
0
6 to 8 MHz
0
1
相关PDF资料
PDF描述
ST72F321J7T3 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
ST72F321J7T1 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
ST72F321J9T5 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP44
ST72F324BJ6B6 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP42
ST72F324BK6T6 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP32
相关代理商/技术参数
参数描述
ST72F321J9TA 功能描述:8位微控制器 -MCU AUTO 8BIT MICRO RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F321J9TAE 功能描述:8位微控制器 -MCU 8B MCU RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F321J9TAS 制造商:STMicroelectronics 功能描述:
ST72F321J9TC 功能描述:8位微控制器 -MCU Flask 60K SPI/SCI/I2 RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F321J9TCE 制造商:STMicroelectronics 功能描述: