參數(shù)資料
型號: MC68HC705C9ACFB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 88/118頁
文件大小: 750K
代理商: MC68HC705C9ACFB
MC68HC05C9A Advance Information Data Sheet, Rev. 4.1
Freescale Semiconductor
71
Chapter 10
Serial Peripheral Interface (SPI)
10.1 Introduction
The serial peripheral interface (SPI) is an interface built into the device which allows several MC68HC05
MCUs, or MC68HC05 MCU plus peripheral devices, to be interconnected within a single printed circuit
board. In an SPI, separate wires are required for data and clock. In the SPI format, the clock is not
included in the data stream and must be furnished as a separate signal. An SPI system may be configured
in one containing one master MCU and several slave MCUs, or in a system in which an MCU is capable
of being a master or a slave.
10.2 Features
Features include:
Full-duplex, four-wire synchronous transfers
Master or slave operation
Bus frequency divided by 2 (maximum) master bit frequency
Bus frequency (maximum) slave bit frequency
Four programmable master bit rates
Programmable clock polarity and phase
End of transmission interrupt flag
Write collision flag protection
Master-master mode fault protection capability
10.3 SPI Signal Description
The four basic signals (MOSI, MISO, SCK, and SS) are described in the following paragraphs. Each
signal function is described for both the master and slave modes.
NOTE
In C9A mode, any SPI output line has to have its corresponding data
direction register bit set. If this bit is clear, the line is disconnected from the
SPI logic and becomes a general-purpose input line. When the SPI is
enabled, any SPI input line is forced to act as an input regardless of what
is in the corresponding data direction register bit.
相關(guān)PDF資料
PDF描述
MC68HC705C9ACB 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP42
MC68HC705C9ACFNE 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQCC44
MC68HC705C9AFB 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP44
MC68HC705C9AVFN 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQCC44
MC68HC705C9AP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP40
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC705C9ACFBE 功能描述:8位微控制器 -MCU 8B MCU 352 BYTES RAM RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
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MC68HC705C9ACPE 制造商:Freescale Semiconductor 功能描述: