- 您現在的位置：買賣IC網 > PDF目錄371053 > MC68HC901P (MOTOROLA INC) Multi-Function Peripheral PDF資料下載
參數資料
| 型號： | MC68HC901P |
| 廠商： | MOTOROLA INC |
| 元件分類： | 外設及接口 |
| 英文描述： | Multi-Function Peripheral |
| 中文描述： | MULTIFUNCTION PERIPHERAL, PDIP48 |
| 封裝： | PLASTIC, DIP-48 |
| 文件頁數： | 50/73頁 |
| 文件大小： | 274K |
| 代理商： | MC68HC901P |
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頁當前第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第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
Universal Synchronous/Asynchronous Receiver-Transmitter
7-7
MC68HC901 USER’S MANUAL
MOTOROLA
RE — Receiver Enable
This bit should not be set until the receiver clock is active. When the transmitter is disabled
in auto-turnaround mode this bit is set.
1 = Receiver operation is enabled.
0 = Receiver is disabled.
7.2.3 Special Receive Conditions
Certain receive conditions relating to the overrun error flag and the break detect flag require
further explanation. Consider the following examples:
1. A break is received while the receive buffer is full. This does not produce an overrun
condition. Only the B flag will be set after the receiver buffer is read.
2. A new word is received, and the receive buffer is full. A break is received before the
receive buffer is read.
Both the B and OE flags will be set when the buffer full condition is satisfied.
7.3 TRANSMITTER
The transmit buffer is loaded by writing to the USART data register (UDR). The data
character will be transferred to an internal 8-bit shift register when the last character in the
shift register has been transmitted. This transfer will produce a buffer empty condition. If the
transmitter completes the transmission of the character in the shift register before a new
character is written to the transmit buffer, an underrun error will occur. In the asynchronous
character format, the transmitter will send a mark until the transmit buffer is written. In the
synchronous character format, the transmitter will continuously send the synchronous
character until the transmit buffer is written.
The transmit buffer can be loaded prior to enabling the transmitter. After the transmitter is
enabled, there is a delay before the first bit is output. The serial output line (SO) should be
programmed to be high, low, or high impedance (by setting the appropriate bits in the
transmitter status register (TSR)) before the transmitter is enabled forcing the output line to
the desired state until the first bit of the first character is shifted out. The state of the H and
L bits in the TSR determine the state of the first transmitted bit after the transmitter is
enabled. If the high impedance mode is selected prior to the transmitter being enabled, the
first bit transmitted is indeterminate. Note that the SO line will always be driven high for one
bit time prior to the character in the transmit shift register being transmitted when the
transmitter is first enabled.
When the transmitter is disabled, any character currently being transmitted will continue to
completion. However, any character in the transmit buffer will not be transmitted and will
remain in the buffer. Thus, no buffer empty condition will occur. If the buffer is empty when
the transmitter is disabled, the buffer empty condition will remain, but no underrun condition
will be generated when the character in transmission is completed. If no character is being
transmitted when the transmitter is disabled, the transmitter will stop at the next rising edge
of the internal shift clock.
相關PDF資料 |
PDF描述 |
|---|---|
| MC68HC916X1 | 16-Bit Modular Microcontroller(16位模塊化微控制器) |
| MC68HC9D60 | Advance Information - Rev 4.0 |
| MC68HC12D60 | Advance Information - Rev 4.0 |
| MC68HCL05C8A | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| MC68HSC05C8A | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MC68HC908AB32CFU | 功能描述:IC MCU 8MHZ 32K FLASH 64-QFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC08 其它有關文件:STM32F101T8 View All Specifications 特色產品: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: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 數據轉換器: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 |
| MC68HC908AB32MFU | 制造商:Rochester Electronics LLC 功能描述:32K FLASH & 512 EE - Bulk |
| MC68HC908AB32MPB | 功能描述:IC MCU 32K FLASH 8MHZ 64-LQFP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC08 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設備:POR，PWM，溫度傳感器，WDT 輸入/輸出數:21 程序存儲器容量:40KB（20K x 16） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數據轉換器:A/D 6x12b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| MC68HC908AP16CB | 功能描述:IC MCU 16K FLASH 8MHZ 42SDIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC08 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設備:POR，PWM，溫度傳感器，WDT 輸入/輸出數:21 程序存儲器容量:40KB（20K x 16） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數據轉換器:A/D 6x12b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| MC68HC908AP16CBE | 制造商:Freescale Semiconductor 功能描述: |
發布緊急采購，3分鐘左右您將得到回復。