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Atmel ATmega128 User Manual

Atmel ATmega128
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193
2467S–AVR–07/09
ATmega128
Bit 15:12 – Reserved Bits
These bits are reserved for future use. For compatibility with future devices, these bit must be
written to zero when UBRRnH is written.
Bit 11:0 – UBRRn11:0: USARTn Baud Rate Register
This is a 12-bit register which contains the USARTn baud rate. The UBRRnH contains the four
most significant bits, and the UBRRnL contains the eight least significant bits of the USARTn
baud rate. Ongoing transmissions by the transmitter and receiver will be corrupted if the baud
rate is changed. Writing UBRRnL will trigger an immediate update of the baud rate prescaler.

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Atmel ATmega128 Specifications

General IconGeneral
BrandAtmel
ModelATmega128
CategoryMicrocontrollers
LanguageEnglish

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