參數資料
型號: MC68HC11D0CP3
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDIP40
封裝: PLASTIC, DIP-40
文件頁數: 104/124頁
文件大小: 6875K
代理商: MC68HC11D0CP3
SERIAL PERIPHERAL INTERFACE
8-2
TECHNICAL DATA
Figure 8-1 SPI Block Diagram
8.2 SPI Transfer Formats
During an SPI transfer, data is simultaneously transmitted and received. A serial clock
line synchronizes shifting and sampling of the information on the two serial data lines.
A slave select line allows individual selection of a slave SPI device; slave devices that
are not selected do not interfere with SPI bus activities. On a master SPI device, the
select line can optionally be used to indicate a multiple master bus contention. Refer
11 SPI BLOCK
SPR0
SPR1
CPHA
CPOL
MS
TR
DWOM
SPE
SPI
E
SPI CONTROL REGISTER
MO
D
F
WCO
L
SPI
F
SPI STATUS REGISTER
8/16-BIT SHIFT REGISTER
READ DATA BUFFER
MSB
LSB
INTERNAL
DATA BUS
SPI INTERRUPT
REQUEST
MSTR
SPE
MS
T
R
DWO
M
SPE
SP
R
0
SPI CLOCK (MASTER)
SPI CONTROL
SELECT
DIVIDER
INTERNAL
MCU CLOCK
CLOCK
LOGIC
CLOCK
PIN
C
O
NT
R
O
L
OGI
C
S
M
S
M
S
MISO
PD2
MOSI
PD3
SCK
PD4
SS
PD5
SP
R
1
÷2
÷4
÷16 ÷32
8
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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