ATmega169P datasheet(189/393 Pages) ATMEL

Part #	ATmega169P

Description	8-bit Microcontroller with 16K Bytes In-System Programmable Flash

PDF	393 Pages

Scroll/Zoom	100%

Manufacturer	ATMEL [ATMEL Corporation]

Direct Link	http://www.atmel.com

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189 / 393 page

189

8018N–AVR–08/09

ATmega169P

When the last data frame is received by the addressed MCU, the addressed MCU sets

the MPCMn bit and waits for a new address frame from master. The process then

repeats from 2.

Using any of the 5- to 8-bit character frame formats is possible, but impractical since the

Receiver must change between using n and n+1 character frame formats. This makes full-

duplex operation difficult since the Transmitter and Receiver uses the same character size set-

ting. If 5- to 8-bit character frames are used, the Transmitter must be set to use two stop bit

(USBSn = 1) since the first stop bit is used for indicating the frame type.

Do not use Read-Modify-Write instructions (SBI and CBI) to set or clear the MPCMn bit. The

MPCMn bit shares the same I/O location as the TXCn Flag and this might accidentally be

cleared when using SBI or CBI instructions.

ATmega169P Datasheet(PDF) 189 Page - ATMEL Corporation