mc68hc11k4vfu4 Freescale Semiconductor, Inc, mc68hc11k4vfu4 Datasheet - Page 57

• Manufacturer Part Number: mc68hc11k4vfu4
• Description: 8-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

SPCR —Serial Peripheral Control Register
SPIE —Serial Peripheral Interrupt Enable
SPE —Serial Peripheral System Enable
DWOM —Port D Wired-OR Mode Option for SPI Pins PD[5:2] (See also WOMS bit in SCCR1.)
MSTR —Master Mode Select
CPOL, CPHA —Clock Polarity, Clock Phase
M68HC11 K Series
MC68HC11KTS/D
(CPHA = 0)
(CPHA = 1)
RESET:
Refer to the following figure, SPI Transfer Format.
(FOR REFERENCE)
SCK (CPOL = 0)
SCK (CPOL = 1)
SS (TO SLAVE)
SAMPLE INPUT
SAMPLE INPUT
0 = SPI interrupts disabled
1 = SPI interrupts enabled
0 = SPI off
1 = SPI on
0 = Normal CMOS outputs
1 = Open-drain outputs
0 = Slave mode
1 = Master mode
SCK CYCLE #
DATA OUT
DATA OUT
SPIE
Bit 7
0
This figure shows transmission order when LSBF = 0 default. If LSBF = 1, data is
transferred in reverse order (LSB first).
SPE
6
0
MSB
MSB
1
DWOM
6
5
0
Figure 13 SPI Transfer Format
2
6
5
MSTR
4
0
3
5
NOTE
4
CPOL
4
4
3
0
3
5
3
CPHA
2
1
2
6
2
SPR1
1
U
1
7
1
LSB
SPR0
$0028
Bit 0
8
U
LSB
MOTOROLA
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