參數(shù)資料
型號: MC68HC11D0CFBE3R
廠商: Freescale Semiconductor
文件頁數(shù): 104/124頁
文件大?。?/td> 0K
描述: MCU 8-BIT 192 RAM 3MHZ 44-QFP
標(biāo)準(zhǔn)包裝: 750
系列: HC11
核心處理器: HC11
芯體尺寸: 8-位
速度: 3MHz
連通性: SCI,SPI
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 26
程序存儲器類型: ROMless
RAM 容量: 192 x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-QFP
包裝: 帶卷 (TR)
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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