参数资料
型号: MCC68HC711D3
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, UUC
封装: DIE
文件页数: 145/157页
文件大小: 2252K
代理商: MCC68HC711D3
Serial Peripheral Interface (SPI)
Data Sheet
MC68HC711D3 — Rev. 2
88
Serial Peripheral Interface (SPI)
MOTOROLA
Figure 7-1. SPI Block Diagram
7.3 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 to Figure 7-2.
SPR0
SPR1
CPOL
CPHA
MSTR
DWOM
SPE
SPIE
SPI CONTROL REGISTER
MODF
WCOL
SPIF
SPI STATUS REGISTER
8-BIT SHIFT REGISTER
READ DATA BUFFER
MSB
LSB
INTERNAL
DATA BUS
SPI INTERRUPT
REQUEST
MSTR
SPE
MST
R
DWOM
SP
E
S
PR0
SPI CLOCK (MASTER)
SPI CONTROL
SELECT
DIVIDER
PH2
(INTERNAL)
CLOCK
LOGIC
CLOCK
PIN
CONTR
O
L
LOGIC
S
M
S
M
MISO
PD2
MOSI
PD3
SCK
PD4
SS
PD5
S
PR1
÷2
÷4
÷16 ÷32
8
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