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參數資料
| 型號： | AT43USB320A-AC |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Full-speed USB Microcontroller with an Embedded Hub |
| 中文描述： | 8-BIT, 12 MHz, RISC MICROCONTROLLER, PQFP100 |
| 封裝： | 14 X 14 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, MS-026AED, LQFP-100 |
| 文件頁數： | 60/115頁 |
| 文件大?。?/td> | 722K |
| 代理商： | AT43USB320A-AC |
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60
AT43USB320A
1443E–USB–4/04
isters, one for transmitted data and one for received data. When UDR is read, the Receive
Data register is accessed, and when UDR is written, the Transmit Data register is accessed.
If, after having received a character, the UDR register has not been read since the last
receive, the OverRun (OR) flag in UCR is set. This means that the last data byte shifted into
the shift register could not be transferred to UDR and has been lost. The OR bit is buffered
and is updated when the valid data byte in UDR is read. Thus, the user should always check
the OR bit after reading the UDR register in order to detect any overruns if the baud rate is
high or CPU load is high.
When the RXEN bit in the UCR register is cleared (zero), the receiver is disabled. This means
that the PDO pin can be used as a general I/O pin. When RXEN is set, the UART Receiver will
be connected to PDO, which is forced to be an input pin regardless of the setting of the DDDO
bit in DDRD. When PDO is forced to input by the UART, the PORTDO bit can still be used to
control the pull-up resistor on the pin.
Figure 20.
UART Receiver
Figure 21.
Sampling Received Data
相關PDF資料 |
PDF描述 |
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| AT43USB321 | Full-speed USB Hub/Function Microcontroller |
| AT43USB325E-AC | Multimedia USB Keyboard Controller with Embedded Hub |
| AT43USB325E-AU | Multimedia USB Keyboard Controller with Embedded Hub |
| AT43USB326-AC | Multimedia USB Keyboard Controller with Embedded Hub |
| AT43USB326-AU | Multimedia USB Keyboard Controller with Embedded Hub |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AT43USB321 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Full-speed USB Hub/Function Microcontroller |
| AT43USB324AC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:KEYBOARD CONTROLLER |
| AT43USB324YC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:KEYBOARD CONTROLLER |
| AT43USB325 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Missed Watchdog Timer Reset |
| AT43USB325_05 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Multimedia USB Keyboard Controller with Embedded Hub |
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