參數(shù)資料
型號(hào): MC68HC11KA4TS
廠(chǎng)商: Motorola, Inc.
英文描述: KPT 3C 3#16 PIN PLUG
中文描述: 8位微控制器
文件頁(yè)數(shù): 45/68頁(yè)
文件大?。?/td> 365K
代理商: MC68HC11KA4TS
MC68HC11KA4
MC68HC11KA4TS/D
MOTOROLA
45
SPIE — Serial Peripheral Interrupt Enable
0 = SPI interrupts disabled
1 = SPI interrupts enabled
SPE — Serial Peripheral System Enable
0 = SPI off
1 = SPI on
DWOM — Port D Wired-OR Mode Option for SPI Pins PD[5:2] (See also WOMS bit in SCCR1.)
0 = Normal CMOS outputs
1 = Open-drain outputs
MSTR — Master Mode Select
0 = Slave mode
1 = Master mode
CPOL, CPHA — Clock Polarity, Clock Phase
Refer to SPI Transfer Format.
Figure 13 SPI Transfer Format
SPCR
—Serial Peripheral Control Register
$0028
Bit 7
6
5
4
3
2
1
Bit 0
SPIE
SPE
DWOM
MSTR
CPOL
CPHA
SPR1
SPR0
RESET:
0
0
0
0
0
1
U
U
SPI TRANSFER FORMAT 1
2
3
4
5
6
7
8
1
SCK (CPOL = 1)
SCK (CPOL = 0)
SCK CYCLE #
SS (TO SLAVE)
6
5
4
3
2
1
LSB
MSB
MSB
6
5
4
3
2
1
LSB
1
2
3
5
4
SLAVE CPHA=1 TRANSFER IN PROGRESS
MASTER TRANSFER IN PROGRESS
SLAVE CPHA=0 TRANSFER IN PROGRESS
1. SS ASSERTED
2. MASTER WRITES TO SPDR
3. FIRST SCK EDGE
4. SPIF SET
5. SS NEGATED
SAMPLE INPUT
DATA OUT
(CPHA = 0)
SAMPLE INPUT
DATA OUT
(CPHA = 1)
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