ATMEGA169PV 参数 Datasheet PDF下载

型号：	ATMEGA169PV
PDF下载：	下载PDF文件查看货源
内容描述：	微控制器，带有16K字节的系统内可编程闪存 [Microcontroller with 16K Bytes In-System Programmable Flash]
分类和应用：	闪存微控制器
文件页数/大小：	390 页 / 3485 K
品牌：	ATMEL [ ATMEL ]

ATmega169P

18.6.2

Receiving Frames with 9 Data Bits

If 9-bit characters are used (UCSZ=7) the ninth bit must be read from the RXB8n bit in UCSRnB

before reading the low bits from the UDRn. This rule applies to the FEn, DORn and UPEn Sta-

tus Flags as well. Read status from UCSRnA, then data from UDRn. Reading the UDRn I/O

location will change the state of the receive buffer FIFO and consequently the TXB8n, FEn,

DORn and UPEn bits, which all are stored in the FIFO, will change.

The following code example shows a simple USART receive function that handles both nine bit

characters and the status bits.

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8018A–AVR–03/06