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| 型號： | MC68HC705CJ4FB |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁數(shù)： | 77/114頁 |
| 文件大小： | 4047K |
| 代理商： | MC68HC705CJ4FB |
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GENERAL RELEASE SPECIFICATION
SERIAL PERIPHERAL INTERFACE
MC68HC(7)05CJ4
9-8
Rev. 2.1
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9.3.3 SPI Data Register (SPDR)
Read: anytime (normally only after SPIF flag set)
Write: anytime (see WCOL write collision flag)
Reset: does not affect this register
This 8-bit register is both the input and output register for SPI data. In the SPI
system the 8-bit data register in the master and the 8-bit data register in the slave
are linked by the MOSI and MISO wires to form a distributed 16-bit register. When
a data transfer operation is performed, this 16-bit register is serially shifted eight bit
positions by the SCK1 clock from the master so the data is effectively exchanged
between the master and the slave. Note that some slave devices are very simple
and either accept data from the master without returning data to the master or pass
data to the master without requiring data from the master.
When writing the SPDR, the data is written directly into the shift register and always
shifted out in the same direction. To affect a change in the direction of data transfer,
the data is loaded into the shift register in reverse order. For this reason, the DOD
bit must be written before data is loaded into the shift register
When reading the SPDR, a read data buffer is actually accessed. This buffer
contains the last data byte received by the SPI, and is updated during the cycle that
SPIF is set (reception complete).
Bit 7
654321
Bit 0
$000D
SPSR
Read:
SPD7
SPD6
SPD5
SPD4
SPD3
SPD2
SPD1
SPD0
Write:
Reset:
Unaffected by Reset
Figure 9-4. SPI Control Register
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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| MC68HC705J1ACP | 功能描述:IC MCU 4MHZ 1.2K OTP 20-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 其它有關文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標準包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉換器:A/D 10x12b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名稱:497-9032STM32F101T8U6-ND |
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