參數(shù)資料
型號: MC68HC11ED0VFU2
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, 2 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 91/108頁
文件大小: 1672K
代理商: MC68HC11ED0VFU2
Serial Peripheral Interface (SPI)
SPI Registers
MC68HC11ED0 — Rev. 1.0
Technical Summary
Serial Peripheral Interface (SPI)
8.3 SPI Registers
This subsection describes the SPI registers.
8.3.1 Serial Peripheral Control Register
SPIE — Serial Peripheral Interrupt Enable Bit
0 = SPI interrupts disabled
1 = SPI interrupts enabled
SPE — Serial Peripheral System Enable Bit
0 = SPI off
1 = SPI on
DWOM — Port D Wired-OR Mode Option Bit for Port D Pins PD[5:2]
0 = Normal CMOS outputs
1 = Open-drain outputs
MSTR — Master Mode Select Bit
0 = Slave mode
1 = Master mode
CPOL and CPHA — Clock Polarity Bit and Clock Phase Bit
Refer to Figure 8-3.
Address:
$0028
Bit 7
6
54321
Bit 0
Read:
SPIE
SPE
DWOM
MSTR
CPOL
CPHA
SPR1
SPR0
Write:
Reset:
00
0001
U
U = Unaffected
Figure 8-2. Serial Peripheral Control Register (SPCR)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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