收藏本站
...the world's most energy friendly microcontrollers
I2Cn_STATEDescription
I2Cn_IF
Required
Response
interaction
START
STOP +
START
Repeated start condition will be sent
STOP will be sent and the bus released. Then
a START will be sent when the bus becomes
idle
-
Data transmitted
TXBL interrupt flag
None
(TXC interrupt flag)
0xD7
Data transmitted,ACK
ACK interrupt flag
TXDATA
DATA will be sent
received
(BUSHOLD interrupt
flag)
STOP
START
STOP +
START
STOP will be sent. Bus will be released
Repeated start condition will be sent
STOP will be sent and the bus released. Then
a START will be sent when the bus becomes
idle
0xDF
Data
transmitted,NACK
NACK(BUSHOLD
interrupt flag)
CONT +
TXDATA
DATA will be sent
received
STOP
START
STOP +
START
STOP will be sent. Bus will be released
Repeated start condition will be sent
STOP will be sent and the bus released. Then
a START will be sent when the bus becomes
idle
-
-
Stop transmitted
Arbitration lost
MSTOP interrupt flag
ARBLOST interrupt
None
START
None
START will be sent when bus becomes idle
flag
START
START will be sent when bus becomes idle
15.3.7.5 Master Receiver
To receive data from a slave, the master must operate as a master receiver, see Table 15.5 (p. 156) .
This is done by transmitting ADDR+R as the address byte instead of ADDR+W, which is transmitted to
become a master transmitter. The address byte loaded into the data register thus has to contain the 7-
bit slave address in the 7 most significant bits of the byte, and have the least significant bit set.
When the address has been transmitted, the master receives an ACK or a NACK. If an ACK is received,
the ACK interrupt flag in I2Cn_IF is set, and if space is available in the receive shift register, reception
of a byte from the slave begins. If the receive buffer and shift register is full however, the bus is held
until data is read from the receive buffer or another interaction is made. Note that the STOP and START
interactions have a higher priority than the data-available interaction, so if a STOP or START command
is pending, the highest priority interaction will be performed, and data will not be received from the slave.
If a NACK was received, the CONT command in I2Cn_CMD has to be issued in order to continue
receiving data, even if there is space available in the receive buffer and/or shift register.
After a data byte has been received the master must ACK or NACK the received byte. If an ACK is
pending or AUTOACK in I2Cn_CTRL is set, an ACK is sent automatically and reception continues if
space is available in the receive buffer.
If a NACK is sent, the CONT command must be used in order to continue transmission. If an ACK
or NACK is issued along with a START or STOP or both, then the ACK/NACK is transmitted and the
reception is ended. If START in I2Cn_CMD is set alone, a repeated start condition is transmitted after
the ACK/NACK. If STOP in I2Cn_CMD is set, a stop condition is sent regardless of whether START is
set. If START is set in this case, it is set as pending.
2011-04-12 - d0001_Rev1.10
155
www.energymicro.com
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

*
*
*
相关PDF资料
EFM32GG-STK3700 KIT STARTER GIANT GECKO
EFM32LG-DK3650 KIT DEV EFM32 LEOPARD GECKO
EK-K7-KC705-CES-G-J KINTEX-7 FPGA KC705 EVAL KIT
EK-S6-SP601-G KIT EVAL SPARTAN 6 SP601
EK-S6-SP605-G KIT EVAL SPARTAN 6 SP605
EK-V6-ML631-G-J VIRTEX-6 HXT FPGA ML631 EVAL KIT
EK-V7-VC707-CES-G VIRTEX-7 VC707 EVAL KIT
EK-Z7-ZC702-CES-G ZYNQ-7000 EPP ZC702 EVAL KIT
相关代理商/技术参数
EFM32GG230F1024 功能描述:ARM微控制器 - MCU 1024KB FL 128KB RAM RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT
EFM32GG230F1024G-E-QFN64R 功能描述:IC MCU 32BIT 1MB FLASH 64QFN 制造商:silicon labs 系列:Giant Gecko 包装:剪切带（CT） 零件状态:在售 核心处理器:ARM? Cortex?-M3 核心尺寸:32-位 速度:48MHz 连接性:I2C，IrDA，智能卡，SPI，UART/USART 外设:欠压检测/复位，DMA，POR，PWM，WDT I/O 数:56 程序存储容量:1MB（1M x 8） 程序存储器类型:闪存 EEPROM 容量:- RAM 容量:128K x 8 电压 - 电源（Vcc/Vdd）:1.98 V ~ 3.8 V 数据转换器:A/D 8x12b，D/A 2x12b 振荡器类型:内部 工作温度:-40°C ~ 85°C（TA） 封装/外壳:64-VFQFN 裸露焊盘 供应商器件封装:64-QFN（9x9） 标准包装:1
EFM32GG230F1024-QFN64 制造商:Energy Micro AS 功能描述:GIANT GECKO MCU - Cut TR (SOS) 制造商:Energy Micro 功能描述:GIANT GECKO MCU 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 1MB FLASH 64QFN
EFM32GG230F1024-QFN64T 制造商:Energy Micro AS 功能描述:GIANT GECKO MCU - Trays
EFM32GG230F1024-QFN64-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 1MB FLASH 64QFN
EFM32-GG230F1024-SK 制造商:Energy Micro AS 功能描述:GIANT GECKO SAMPLE KIT - Bulk
EFM32GG230F1024-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 1MB FLASH 64QFN
EFM32GG230F512 功能描述:ARM微控制器 - MCU 512KB FL 128KB RAM RoHS:否 制造商:STMicroelectronics 核心:ARM Cortex M4F 处理器系列:STM32F373xx 数据总线宽度:32 bit 最大时钟频率:72 MHz 程序存储器大小:256 KB 数据 RAM 大小:32 KB 片上 ADC:Yes 工作电源电压:1.65 V to 3.6 V, 2 V to 3.6 V, 2.2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:LQFP-48 安装风格:SMD/SMT