Datasheet

25.8.1 TWBR – TWI Bit Rate Register
Name:  TWBR
Offset:  0x00
Reset:  0x00
Property:  When addressing I/O Registers as data space the offset address is 0x20
When using the I/O specific commands IN and OUT, the I/O addresses 0x00 - 0x3F must be used. When
addressing I/O Registers as data space using LD and ST instructions, 0x20 must be added to these offset
addresses.
Bit 7 6 5 4 3 2 1 0
TWBRn[7:0]
Access
R/W R/W R/W R/W R/W R/W R/W R/W
Reset 0 0 0 0 0 0 0 0
Bits 7:0 – TWBRn[7:0] TWI Bit Rate Register [n = 7:0]
TWBR selects the division factor for the bit rate generator. The bit rate generator is a frequency divider
which generates the SCL clock frequency in the Master modes. See Bit Rate Generator Unit for
calculating bit rates.
AVR 8-Bit Microcontroller
TWI - Two-wire Serial Interface
© 2017 Microchip Technology Inc.
Datasheet Complete
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