AT89C51CC03C-S3SIM【PDF 41/198 页】IC 8051 MCU FLASH 64K 52PLCC

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3850

37页 38页 39页 40页 [41页]42页 43页 44页 45页

135

AT89C51CC03

4182O–CAN–09/08

Error Conditions

The following flags in the SPSCR register indicate the SPI error conditions:

Mode Fault Error (MODF)

Mode Fault error in Master mode SPI indicates that the level on the Slave Select (SS)

pin is inconsistent with the actual mode of the device.

Mode fault detection in Master mode:

MODF is set to warn that there may be a multi-master conflict for system control. In this

case, the SPI system is affected in the following ways:

–

An SPI receiver/error CPU interrupt request is generated

–

The SPEN bit in SPCON is cleared. This disables the SPI

–

The MSTR bit in SPCON is cleared

Clearing the MODF bit is accomplished by a read of SPSCR register with MODF bit set,

followed by a write to the SPCON register. SPEN Control bit may be restored to its orig-

inal set state after the MODF bit has been cleared.

Figure 64. Mode Fault Conditions in Master Mode (Cpha =’1’/Cpol =’0’)

Note:

When SS is discarded (SS disabled) it is not possible to detect a MODF error in master

mode because the SPI is internally unselected and the SS pin is a general purpose I/O.

Mode fault detection in Slave mode

In slave mode, the MODF error is detected when SS goes high during a transmission.

A transmission begins when SS goes low and ends once the incoming SCK goes back

to its idle level following the shift of the eighteen data bit.

A MODF error occurs if a slave is selected (SS is low) and later unselected (SS is high)

even if no SCK is sent to that slave.

At any time, a ’1’ on the SS pin of a slave SPI puts the MISO pin in a high impedance

state and internal state counter is cleared. Also, the slave SPI ignores all incoming SCK

clocks, even if it was already in the middle of a transmission. A new transmission will be

performed as soon as SS pin returns low.

SCK

(master)

SCK cycle #

(slave)

(from master)

MODF detected

MSB

SPI enable

MODF detected

MOSI

MISO

(from master)

(from slave)

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

AT89C51CC03C-SLRIM 功能描述:IC 8051 MCU FLASH 64K 44PLCC RoHS:否类别:集成电路 (IC) >> 嵌入式 - 微控制器，系列:AT89C CAN 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)

AT89C51CC03C-SLSIM 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Enhanced 8-bit MCU with CAN Controller and Flash Memory

AT89C51CC03U-7CTIM 功能描述:IC 8051 MCU FLASH 64K 64BGA RoHS:否类别:集成电路 (IC) >> 嵌入式 - 微控制器，系列:AT89C CAN 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

AT89C51CC03UA-7CTUM 制造商:Rochester Electronics LLC 功能描述: 制造商:Atmel Corporation 功能描述:

AT89C51CC03UA-RDTUM 功能描述:8位微控制器 -MCU CAN C51 64K FLASH UAR BOOT 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

AT89C51CC03UA-RDTZM 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Enhanced 8-bit MCU with CAN Controller and Flash Memory

AT89C51CC03UA-RLTUM 功能描述:8位微控制器 -MCU CAN C51 64K FLASH UAR BOOT 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

AT89C51CC03UA-RLTZM 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Enhanced 8-bit MCU with CAN Controller and Flash Memory

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