收藏本站
参数资料
型号： ST72E734J6D0
厂商： STMICROELECTRONICS
元件分类： 微控制器/微处理器
英文描述： 8-BIT, UVPROM, 8 MHz, MICROCONTROLLER, CDIP42
封装： CERAMIC, SDIP-42
文件页数： 138/144页
文件大小： 1280K
代理商： ST72E734J6D0
ST72774/ST727754/ST72734
93/144
IC SINGLE MASTER BUS INTERFACE (Cont’d)
I2C STATUS REGISTER 2 (SR2)
Read Only
Reset Value: 0000 0000 (00h)
Bit 7:5 = Reserved. Forced to 0 by hardware.
Bit 4 = AF
Acknowledge failure.
This bit is set by hardware when no acknowledge
is returned. An interrupt is generated if ITE=1. It is
cleared by software reading SR2 register or by
hardware when the interface is disabled (PE=0).
The SCL line is not held low while AF=1.
0: No acknowledge failure
1: Acknowledge failure
Bit 3:0 = Reserved. Forced to 0 by hardware.
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
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).
– Standard mode (FM/SM=0): FSCL <= 100kHz
FSCL = FCPU/(2x([CC6..CC0]+2))
– Fast mode (FM/SM=1): FSCL > 100kHz
FSCL = FCPU/(3x([CC6..CC0]+2))
Note: The programmed FSCL assumes no load on SCL
and SDA lines.
I2C DATA REGISTER (DR)
Read / Write
Reset Value: 0000 0000 (00h)
Bit 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.
70
000
AF
00
70
FM/SM
CC6
CC5
CC4
CC3
CC2
CC1
CC0
70
D7
D6
D5
D4
D3
D2
D1
D0
相关PDF资料
PDF描述
ST72T774S9T1 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PQFP44
ST7294C6B6 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDIP28
ST72T94C6M6 8-BIT, OTPROM, MICROCONTROLLER, PDSO28
ST72C171K2B6 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP32
ST72E85A5G0 8-BIT, UVPROM, 4.332 MHz, MICROCONTROLLER, CQFP80
相关代理商/技术参数
参数描述
ST72F260G1B5 功能描述:8位微控制器 -MCU Flask 4K SPI 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
ST72F260G1M6 功能描述:8位微控制器 -MCU Flash 4K SPI/I2C/SCI 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
ST72F260G1M6/TR 功能描述:8位微控制器 -MCU 8B MCU FLASH OR ROM MEMORY 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
ST72F262G1B5 功能描述:8位微控制器 -MCU Flask 4K SPI 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
ST72F262G1B6 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
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*