参数资料
型号: MCHC11F1CFNE2
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, EEPROM, MICROCONTROLLER, PQCC68
封装: ROHS COMPLIANT AND HALOGEN FREE, PLASTIC, LCC-68
文件页数: 162/162页
文件大小: 4554K
代理商: MCHC11F1CFNE2
SERIAL PERIPHERAL INTERFACE
MOTOROLA
TECHNICAL DATA
8-1
SECTION 8 SERIAL PERIPHERAL INTERFACE
The serial peripheral interface (SPI), an independent serial communications sub-
system, allows the MCU to communicate synchronously with peripheral devices, such
as transistor-transistor logic (TTL) shift registers, liquid crystal display (LCD) drivers,
analog-to-digital converter subsystems, and other microprocessors. The SPI is also
capable of inter-processor communication in a multiple master system. The SPI sys-
tem can be configured as either a master or a slave device. When configured as a
master, data transfer rates can be as high as one-half the E-clock rate (2.5 Mbits per
second for a 5-MHz bus frequency). When configured as a slave, data transfers can
be as fast as the E-clock rate (5 Mbits per second for a 5-MHz bus frequency).
8.1 Functional Description
The central element in the SPI system is the block containing the shift register and the
read data buffer. The system is single buffered in the transmit direction and double
buffered in the receive direction. This means that new data for transmission cannot be
written to the shifter until the previous transfer is complete; however, received data is
transferred into a parallel read data buffer so the shifter is free to accept a second se-
rial character. As long as the first character is read out of the read data buffer before
the next serial character is ready to be transferred, no overrun condition occurs. A sin-
gle MCU register address is used for reading data from the read data buffer and for
writing data to the shifter.
The SPI status block represents the SPI status flags (transfer complete, write collision,
and mode fault) located in the SPI status register (SPSR). The SPI control block rep-
resents those functions that control the SPI system through the serial peripheral con-
trol register (SPCR).
Refer to Figure 8-1, which shows the SPI block diagram.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相关代理商/技术参数
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MCHC11F1CFNE2 制造商:Freescale Semiconductor 功能描述:8-Bit Microcontroller IC
MCHC11F1CFNE2R 功能描述:8位微控制器 -MCU 8B MCU 1KRAM 512EE 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
MCHC11F1CFNE3 功能描述:8位微控制器 -MCU 8B MCU 1KRAM 512EE 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
MCHC11F1CFNE3 制造商:Freescale Semiconductor 功能描述:8-Bit Microcontroller IC
MCHC11F1CFNE3R 功能描述:8位微控制器 -MCU 8B MCU 1KRAM 512EE 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