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參數(shù)資料
| 型號： | MC68HC05P9ACDW |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁數(shù)： | 35/90頁 |
| 文件大?。?/td> | 285K |
| 代理商： | MC68HC05P9ACDW |
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GENERAL RELEASE SPECIFICATION
MOTOROLA
SIMPLE SERIAL INPUT/OUTPUT PORT
MC68HC05P9A
7-2
Rev. 2.0
In master mode, the format is identical except that the SCK pin is an output and
the shift clock now originates internally. The master mode transmission frequency
is xed at E/4.
7.1.2 Serial Data Out (SDO)
A mask programmable option will be included to allow data to be transmitted in
either MSB rst format or LSB rst format. In either case, the state of the SDO pin
always will reect the value of the rst bit received on the previous transmission if
there was one. Prior to enabling the SIOP, PB5 can be initialized to determine the
beginning state if necessary. While the SIOP is enabled, PB5 can not be used as
a standard output since that pin is coupled to the last stage of the serial shift
register. On the rst falling edge of SCK, the rst data bit to be shifted out is
presented to the output pin.
7.1.3 Serial Data In (SDI)
The SDI pin becomes an input as soon as the SIOP is enabled. New data may be
presented to the SDI pin on the falling edge of SCK. Valid data must be present at
least 100 ns before the rising edge of the clock and remain valid for 100 ns after
the edge.
SDO
BIT 1
BIT 2
BIT 3
BIT 7
SCK
BIT 8
SDI
BIT 1
BIT 2
BIT 3
BIT 7
BIT 8
Figure 7-2. Serial I/O Port Timing
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05P9ACP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P9ADW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P9AMDW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P9AMP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P9AP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
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