參數(shù)資料
型號： MC68HC705F8FU
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 8-BIT, OTPROM, 1.8 MHz, MICROCONTROLLER, PQFP64
封裝： QFP-64
文件頁數(shù)： 100/126頁
文件大?。?/td> 736K
代理商： MC68HC705F8FU
MC68HC05F8
MOTOROLA
8-5
MANCHESTER ENCODER/DECODER
8
8.2.2
Decoder
The Manchester decoder is used to convert incoming Manchester codes on the DECOIN pin to
NRZ data format for processing.
Upon reset the decoder is disabled, decoder enable bit DCE=0. To initiate the decoding process,
the bit rate is rst congured. Setting DCE activates the internal decoding clock, the decoder
enters the start state and the DECOIN pin begins to be sampled. After a low state is conrmed,
the receiver starts to hunt for the 2 bits SYNC pattern. if it is detected, the decoding procedure
starts, the decode logic converts the data bits from Manchester code format to NRZ format and
shifts the result to the decode shift register bit by bit. After all 8 bits have been received and
converted to one data byte, the end pattern of a trailing bit plus two bit pause is veried. If the
pattern followed is correct, the decode ag is set and an interrupt is generated, otherwise the
decoder is reset and returns to the start state.
8.2.2.1
Decoder Overrun
After one byte of data is received and end pattern veried, the decode output ag (DCF) is
checked rst, if it is zero (indicating the Decode Register is empty), one byte of data which has
been received is loaded to the Decode Register and interrupt is generated with the decode output
ag set (DCF=1), otherwise the receive overrun ag is set and an interrupt is generated.
Figure 8-3 Encoder Timing Diagram
A sequence of one byte data
8 bits data
12345678
ENCOOUT
D0
D1
D2
D3
D4
D5
D6
D7
00111010
High Z
1st
SYN bit
2nd
SYN bit
2 bits SYNC
2 bits
DELAY
2 bits
PAUSE
t
≤1 bit time
NCE (encode enable)
Trailing
bit
ENCODER OUT
TPG
73
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC705G1B 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68HC705J1A 制造商:Freescale Semiconductor 功能描述:
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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(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
MC68HC705J1ACPE 功能描述:8位微控制器 -MCU HCO5 CORE+1.2K RAM + EPR 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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