- 您現在的位置：買賣IC網 > PDF目錄363895 > W77L32 (WINBOND ELECTRONICS CORP) 8-BIT MICROCONTROLLER PDF資料下載
參數資料
| 型號： | W77L32 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數： | 58/74頁 |
| 文件大小： | 871K |
| 代理商： | W77L32 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁當前第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁
Preliminary W77L32
- 58 -
Serial Port
Serial port in the W77L32 is a full duplex port. The W77L32 provides the user with additional features
such as the Frame Error Detection and the Automatic Address Recognition. The serial ports are
capable of synchronous as well as asynchronous communication. In Synchronous mode the W77L32
generates the clock and operates in a half duplex mode. In the asynchronous mode, full duplex
operation is available. This means that it can simultaneously transmit and receive data. The transmit
register and the receive buffer are both addressed as SBUF Special Function Register. However any
write to SBUF will be to the transmit register, while a read from SBUF will be from the receive buffer
register. The serial port can operate in four different modes as described below.
Mode 0
This mode provides synchronous communication with external devices. In this mode serial data is
transmitted and received on the RXD line. TXD is used to transmit the shift clock. The TxD clock is
provided by the W77L32 whether the device is transmitting or receiving. This mode is therefore a half
duplex mode of serial communication. In this mode, 8 bits are transmitted or received per frame. The
LSB is transmitted/received first. The baud rate is fixed at 1/12 or 1/4 of the oscillator frequency. This
baud rate is determined by the SM2 bit (SCON.5). When this bit is set to 0, then the serial port runs at
1/12 of the clock. When set to 1, the serial port runs at 1/4 of the clock. This additional facility of
programmable baud rate in mode 0 is the only difference between the standard 8051 and the W77L32.
The functional block diagram is shown below. Data enters and leaves the Serial port on the RxD line.
The TxD line is used to output the shift clock. The shift clock is used to shift data into and out of the
W77L32 and the device at the other end of the line. Any instruction that causes a write to SBUF will
start the transmission. The shift clock will be activated and data will be shifted out on the RxD pin till all
8 bits are transmitted. If SM2 = 1, then the data on RxD will appear 1 clock period before the falling
edge of shift clock on TxD. The clock on TxD then remains low for 2 clock periods, and then goes high
again. If SM2 = 0, the data on RxD will appear 3 clock periods before the falling edge of shift clock on
TxD. The clock on TxD then remains low for 6 clock periods, and then goes high again. This ensures
that at the receiving end the data on RxD line can either be clocked on the rising edge of the shift clock
on TxD or latched when the TxD clock is low.
SBUF
Transmit Shift Register
Receive Shift Register
TX
SHIFT
PAROUT
Internal
Data Bus
Internal
Data Bus
RXD
P3.0 Alternate
Output Function
TXD
P3.1 Alternate
Output function
RXD
P3.0 Alternate
Iutput function
Serial Port Interrupt
Write to
SBUF
TX
START
SOUT
TI
RI
REN
PARIN
LOAD
CLOCK
Read SBUF
SBUF
TX CLOCK
RI
SERIAL
CONTROLLER
SHIFT
CLOCK
RX
CLOCK
LOAD SBUF
RX
START
RX SHIFT
CLOCK
SIN
÷
4
÷
12
1
0
SM2
Clock Source
Mode input
div. by 4 osc/1
div. by 64 osc/16
div. by 1024 osc/256
Figure 20. Serial Port Mode 0
相關PDF資料 |
PDF描述 |
|---|---|
| W77LE532 | 8 BIT MICROCONTROLLER |
| W77LE58 | 8 BIT MICROCONTROLLER |
| W77LE58-25 | 8 BIT MICROCONTROLLER |
| W77LE58F-25 | 8 BIT MICROCONTROLLER |
| W77LE58P-25 | 8 BIT MICROCONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W77L32_07 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77L516A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77L516A25DL | 功能描述:IC MCU 8-BIT 64K FLASH 40-DIP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W77 產品培訓模塊:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 標準包裝:1 系列:M16C™ M32C/80/87 核心處理器:M32C/80 芯體尺寸:16/32-位 速度:32MHz 連通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外圍設備:DMA，POR，PWM，WDT 輸入/輸出數:121 程序存儲器容量:384KB（384K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:24K x 8 電壓 - 電源 (Vcc/Vdd):3 V ~ 5.5 V 數據轉換器:A/D 34x10b，D/A 2x8b 振蕩器型:內部 工作溫度:-20°C ~ 85°C 封裝/外殼:144-LQFP 包裝:托盤 產品目錄頁面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
| W77L516A25FL | 功能描述:IC MCU 8-BIT 64K FLASH 44-PQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W77 產品培訓模塊:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 標準包裝:1 系列:M16C™ M32C/80/87 核心處理器:M32C/80 芯體尺寸:16/32-位 速度:32MHz 連通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外圍設備:DMA，POR，PWM，WDT 輸入/輸出數:121 程序存儲器容量:384KB（384K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:24K x 8 電壓 - 電源 (Vcc/Vdd):3 V ~ 5.5 V 數據轉換器:A/D 34x10b，D/A 2x8b 振蕩器型:內部 工作溫度:-20°C ~ 85°C 封裝/外殼:144-LQFP 包裝:托盤 產品目錄頁面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
| W77L516A25PL | 功能描述:IC MCU 8-BIT 64K FLASH 44-PLCC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W77 產品培訓模塊:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 標準包裝:1 系列:M16C™ M32C/80/87 核心處理器:M32C/80 芯體尺寸:16/32-位 速度:32MHz 連通性:EBI/EMI，I²C，IEBus，IrDA，SIO，UART/USART 外圍設備:DMA，POR，PWM，WDT 輸入/輸出數:121 程序存儲器容量:384KB（384K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:24K x 8 電壓 - 電源 (Vcc/Vdd):3 V ~ 5.5 V 數據轉換器:A/D 34x10b，D/A 2x8b 振蕩器型:內部 工作溫度:-20°C ~ 85°C 封裝/外殼:144-LQFP 包裝:托盤 產品目錄頁面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87 |
發布緊急采購，3分鐘左右您將得到回復。