- 您现在的位置：买卖IC网 > PDF目录80397 > MC68HSC05C8CP (FREESCALE SEMICONDUCTOR INC) 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PDIP40 PDF资料下载
参数资料
| 型号： | MC68HSC05C8CP |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PDIP40 |
| 封装： | PLASTIC, DIP-40 |
| 文件页数： | 76/116页 |
| 文件大小： | 781K |
| 代理商： | MC68HSC05C8CP |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页当前第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页
Serial Peripheral Interface (SPI)
MC68HC05C8A MC68HCL05C8A MC68HSC05C8A Data Sheet, Rev. 5.1
62
Freescale Semiconductor
The SPI data register (SPDR) is double buffered on read, but not on write. If a write is performed during
data transfer, the transfer occurs uninterrupted, and the write will be unsuccessful. This condition will
cause the write collision (WCOL) status bit in the SPSR to be set. After a data byte is shifted, the SPIF
flag of the SPSR is set.
In the master mode, the SCK pin is an output. It idles high or low, depending on the CPOL bit in the SPCR,
until data is written to the shift register, at which point eight clocks are generated to shift the eight bits of
data and then SCK goes idle again.
In a slave mode, the slave select start logic receives a logic low at the SS pin and a clock at the SCK pin.
Thus, the slave is synchronized with the master. Data from the master is received serially at the MOSI
line and loads the 8-bit shift register. After the 8-bit shift register is loaded, its data is parallel transferred
to the read buffer. During a write cycle, data is written into the shift register, then the slave waits for a clock
train from the master to shift the data out on the slave’s MISO line.
Figure 10-3 illustrates the MOSI, MISO, SCK, and SS master-slave interconnections.
Figure 10-3. Serial Peripheral Interface Master-Slave Interconnection
10.5 SPI Registers
This subsection describes the three registers in the SPI which provide control, status, and data storage
functions. These registers are:
Serial peripheral control register (SPCR)
Serial peripheral status register (SPSR)
Serial peripheral data I/O register (SPDR)
I/O PORT
SPDR ($000C)
SPI SHIFT REGISTER
PD3/MOSI
PD2/MISO
PD4/SCK
MASTER MCU
SLAVE MCU
SS
PD5
相关PDF资料 |
PDF描述 |
|---|---|
| MC68HC11A1VFU2 | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP64 |
| MC68HSC705C8ACFB | 8-BIT, OTPROM, 4 MHz, MICROCONTROLLER, PQFP44 |
| MC908GZ48VFJ | 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP32 |
| MC9S12C96CFA25 | 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP48 |
| MC9S12GC16PVFA25 | 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP48 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC68HSC705C8ACFB | 制造商:Rochester Electronics LLC 功能描述:8 BIT MCU, 304 BYTES RAM - Bulk |
| MC68HSC705C8ACP | 制造商:Rochester Electronics LLC 功能描述: 制造商:Freescale Semiconductor 功能描述: |
| MC68HSC705C8ACS | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC68HSC705J1ACDW | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| MC68HSC705J1ACP | 制造商:Rochester Electronics LLC 功能描述:8 BIT MCU, 64 BYTES RAM - Bulk |
发布紧急采购，3分钟左右您将得到回复。