AT89C51ID2-RLRIM【PDF 142/157 页】IC MCU FLASH 8051 64K 5V 44-VQFP

收藏本站

您好，
买卖IC网欢迎您。
请登录
免费注册

买卖IC网

Sheet目录1903

138页 139页 140页 141页 [142页]143页 144页 145页 146页

AT89C51ID2

4289C–8051–11/05

its own slave address followed by the data direction bit which must be at logic 1 (R) for

TWI to operate in the slave transmitter mode. After its own slave address and the R bit

have been received, the serial interrupt flag is set and a valid status code can be read

from SSCS. This status code is used to vector to an interrupt service routine. The appro-

priate action to be taken for each of these status code is detailed in Table . The slave

transmitter mode may also be entered if arbitration is lost while the TWI module is in the

master mode.

If the AA bit is reset during a transfer, the TWI module will transmit the last byte of the

transfer and enter state C0h or C8h. the TWI module is switched to the not addressed

slave mode and will ignore the master receiver if it continues the transfer. Thus the mas-

ter receiver receives all 1’s as serial data. While AA is reset, the TWI module does not

respond to its own slave address. However, the 2-wire bus is still monitored and

address recognition may be resume at any time by setting AA. This means that the AA

bit may be used to temporarily isolate the TWI module from the 2-wire bus.

Miscellaneous States

There are two SSCS codes that do not correspond to a define TWI hardware state

(Table 70 ). These codes are discuss hereafter.

Status F8h indicates that no relevant information is available because the serial interrupt

flag is not set yet. This occurs between other states and when the TWI module is not

involved in a serial transfer.

Status 00h indicates that a bus error has occurred during a TWI serial transfer. A bus

error is caused when a START or a STOP condition occurs at an illegal position in the

format frame. Examples of such illegal positions happen during the serial transfer of an

address byte, a data byte, or an acknowledge bit. When a bus error occurs, SI is set. To

recover from a bus error, the STO flag must be set and SI must be cleared. This causes

the TWI module to enter the not addressed slave mode and to clear the STO flag (no

other bits in SSCON are affected). The SDA and SCL lines are released and no STOP

condition is transmitted.

Notes

the TWI module interfaces to the external 2-wire bus via two port pins: SCL (serial clock

line) and SDA (serial data line). To avoid low level asserting on these lines when the

TWI module is enabled, the output latches of SDA and SLC must be set to logic 1.

Table 65. Bit Frequency Configuration

Bit Frequency ( kHz)

CR2

CR1

CR0

OSCA= 12 MHz

OSCA = 16 MHz

OSCA divided by

62.5

256

53.5

71.5

224

62.5

192

100

160

Unused

100

133.3

120

200

266.6

0.5 <. < 62.5

0.67 <. < 83

96 (256 - reload valueTimer 1)

(reload value range: 0-254 in mode 2)

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)

*型号	*数量	厂商	批号	封装

添加更多采购

我的联系方式

相关代理商/技术参数

AT89C51ID2-RLRUM 功能描述:8位微控制器 -MCU C51ID2 64K FLASH 32KHz 3-5.5V 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

AT89C51ID2-RLTIM 功能描述:IC 8051 MCU FLASH 64K 44VQFP RoHS:否类别:集成电路 (IC) >> 嵌入式 - 微控制器，系列:89C 标准包装:9 系列:87C 核心处理器:8051 芯体尺寸:8-位速度:40/20MHz 连通性:UART/USART 外围设备:POR，WDT 输入/输出数:32 程序存储器容量:32KB（32K x 8）程序存储器类型:OTP EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:- 振荡器型:内部工作温度:0°C ~ 70°C 封装/外壳:40-DIP（0.600"，15.24mm）包装:管件

AT89C51ID2-RLTUM 功能描述:8位微控制器 -MCU C51ID2 64K FLASH 32KHz 3-5.5V 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

AT89C51ID2-SLRIM 功能描述:IC MCU FLASH 8051 64K 5V 44-PLCC RoHS:否类别:集成电路 (IC) >> 嵌入式 - 微控制器，系列:89C 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位速度:16MHz 连通性:I²C，LIN，SPI，UART/USART，USI 外围设备:欠压检测/复位，POR，PWM，温度传感器，WDT 输入/输出数:16 程序存储器容量:8KB（4K x 16）程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽）包装:带卷 (TR)

AT89C51ID2-SLRUM 功能描述:8位微控制器 -MCU C51ID2 64K FLASH TWI 32KHz 5V 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

AT89C51ID2-SLSIM 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Flash Microcontroller

AT89C51ID2-SLSUM 功能描述:8位微控制器 -MCU 64K FLASH 32KHz 3.5-5V Ind. 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

AT89C51ID2-SMSIM 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Flash Microcontroller

采购需求

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

我的联系方式