參數(shù)資料
型號： MC68HC05P4ADWR3
廠商： FREESCALE SEMICONDUCTOR 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： PLASTIC, SOIC-28
文件頁數(shù)： 52/102頁
文件大?。?/td> 930K
代理商： MC68HC05P4ADWR3
Simple Serial Input/Output Port (SIOP)
Signal Format
MC68HC05P4A — Rev. 6.0
Advance Information
MOTOROLA
Simple Serial Input/Output Port (SIOP)
53
7.3.2 Serial Data Out (SDO)
A mask programmable option will be included to allow data to be
transmitted in either MSB first format or LSB first format. In either case,
the state of the SDO pin always will reflect the value of the first 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 first falling edge of SCK, the first data bit to be
shifted out is presented to the output pin.
7.3.3 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.
Figure 7-2. Serial I/O Port Timing
SDO
BIT 1
BIT 2
BIT 3
BIT 7
SCK
BIT 8
SDI
BIT 1
BIT 2
BIT 3
BIT 7
BIT 8
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05P4DW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
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MC68HC05P6_1 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
MC68HC05P8 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
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