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| 型號(hào)： | MC68HC908QL4MDW |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 2 MHz, MICROCONTROLLER, PDSO16 |
| 封裝： | SOIC-16 |
| 文件頁(yè)數(shù)： | 82/244頁(yè) |
| 文件大?。?/td> | 3228K |
| 代理商： | MC68HC908QL4MDW |
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Slave LIN Interface Controller (SLIC)
Data Sheet
MC68HC908QL Family
172
Slave LIN Interface Controller (SLIC)
MOTOROLA
14.12.1 Standard Request Message Frames
Dealing with request messages with the SLIC is very similar to dealing with
command messages, with one important difference. Since the SLIC is now to be
transmitting data in the LIN message frame, the user software must load the data
to be transmitted into the message buffer prior to initiating the transmission. This
means an extra step is taken inside the interrupt service routine once the identifier
has been decoded and is determined to be an ID for a request message frame.
Figure 14-24 deals with request messages, where the SLIC will be transmitting
data to the master node. If the received identifier corresponds to a standard LIN
command frame (i.e., 1-8 data bytes), the message processing is very simple. The
user must load the data to be transmitted into the transmit buffer by writing it to the
SLCD registers. The first byte to be transmitted on the LIN bus should be loaded
into SLCD0, then SLCD1 for the second byte, etc. Once all of the bytes to be
transmitted are loaded in this way, a single write to the SLCDLC register will allow
the user to encode the number of data bytes to be transmitted (1–8 bytes for
standard request frames), set the proper checksum calculation method for the data
(CHKMOD), as well as signal the SLIC that the buffer is ready by writing a 1 to the
TXGO bit. The TXGO bit will remain set to 1 until the buffer is sent successfully or
an error is encountered, signaling to the application code that the buffer is in
process of transmitting. In cases of 1–8 data bytes only being sent (standard LIN
request frames), the SLIC automatically calculates and transmits the checksum
byte at the end of the message frame. The user can exit the ISR once the SLCDLC
register has been written and the SLCF flag has been cleared.
The next SLIC interrupt which occurs, if unmasked, will indicate the end of the
request message frame and will either indicate that the frame was properly
transmitted or that an error was encountered during transmission. Refer to 14.12.4
Possible Errors on Request Message Data for more detailed explanation of
these possible errors. This interrupt also signals to the application that the
message frame is complete and all data bytes and the checksum value have been
properly transmitted onto the bus.
The SLIC module cannot begin to transmit the data until the user writes a 1 to the
TXGO bit, indicating that data is ready. If the user writes the TXGO bit without
loading data into the transmit buffer, whatever data is in storage will be transmitted,
where the number of bytes transmitted is based on the data length value in the data
length register. Similarly, if the user writes the wrong value for the number of data
bytes to transmit, the SLIC will transmit that number of bytes, potentially
transmitting garbage data onto the bus. The checksum calculation is performed
based on the data transmitted, and will therefore still be calculated.
The identifier must be processed, data must be loaded into the transmit buffer, and
the SLCDLC value written to initiate data transmission in a certain amount of time,
based on the LIN specification. If the user waits too long to start transmission, the
master node will observe an idle bus and trigger a Slave Not Responding error
condition. The same error can be triggered if the transmission begins too late and
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PDF描述 |
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| MC68HC908QL4CDT | 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PDSO16 |
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| MC68HC908QL2MDT | 8-BIT, FLASH, 2 MHz, MICROCONTROLLER, PDSO16 |
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| MC68HC908QL4MDT | 8-BIT, FLASH, 2 MHz, MICROCONTROLLER, PDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC908QT1CDW | 功能描述:8位微控制器 -MCU 8 Bit 8MHz RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| MC68HC908QT1CDWE | 制造商:Freescale Semiconductor 功能描述: |
| MC68HC908QT1CFQ | 制造商:Rochester Electronics LLC 功能描述:NITRON DFN - Bulk |
| MC68HC908QT1CP | 功能描述:IC MCU 1.5K FLASH 8-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC08 其它有關(guān)文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標(biāo)準(zhǔn)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(shè)備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲(chǔ)器容量:64KB（64K x 8） 程序存儲(chǔ)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(zhuǎn)換器:A/D 10x12b 振蕩器型:內(nèi)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 |
| MC68HC908QT1CPE | 功能描述:8位微控制器 -MCU 1.5K FLASH W/O ADC RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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