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參數(shù)資料
| 型號(hào)： | MC68HC05G3 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | QFP-80 |
| 文件頁(yè)數(shù)： | 112/128頁(yè) |
| 文件大?。?/td> | 290K |
| 代理商： | MC68HC05G3 |
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Page 74
MOTOROLA
Section 7: SERIAL PERIPHERAL INTERFACE (SPI)
MC68HC05G3 (705G4) Specification Rev. 1.1
7.4.3
SERIAL PERIPHERAL DATA REGISTER (SPDR
x)
READ:
A read during transmission causes DCOL
x to be set.
WRITE:
A write during transmission causes DCOL
x to be set.
The serial peripheral data register (SPDR
x) is used to transmit and receive data
on the serial bus.
In master mode, a write to this register initiates transmission/reception of data
byte.
At the completion of transmitting a byte data, the SPIF
x status bit is set. A write
to the SPDR
x is inhibited while this register is shifting (this condition causes
DCOL
x to be set) or when the SPIFx bit is set without reading SPSRx. “Data
collision” never affects the receiving and transmitting data in SPDR
x.
A write or read of the SPDR
x after accessing the SPSRx with SPIFx set will clear
SPIF
x and DCOLx bits.
The ability to access SPDR
x is inhibited when a transmission is taking place. It
is important to read the discussion defining DCOL
x and SPIFx bits to understand
the limits on using the SPDR
x.
When serial peripheral interface (SPI
x) is not used (SPEx = 0), this SPDRx can
be used as a general-purpose data storage register.
MSB
$000C
LSB
SPDR1
B7
B6
B5
B4
B3
B2
B1
B0
UUUUUUUU
RESET:
MSB
$000F
LSB
SPDR2
B7
B6
B5
B4
B3
B2
B1
B0
UUUUUUUU
RESET:
相關(guān)PDF資料 |
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|---|---|
| MC68HC705J5ACJP | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP16 |
| MC68HC705J5ACP | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP20 |
| MC68HC05J5AJDW | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO16 |
| MC68HRC705J5ACDW | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO20 |
| MC68HRC05J5ADW | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO20 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05J1 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05J1A | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC68HC05J1ACDW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC68HC05J1ACP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
| MC68HC05J1ADW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers |
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