atmega323l ATMEL Corporation, atmega323l Datasheet - Page 232

• Manufacturer Part Number: atmega323l
• Description: Atmega323 8-bit Avr Microcontroller With 32k Bytes Of In-system Programmable Flash
• Manufacturer: ATMEL Corporation

Notes:
232
Address
$01 ($21)
$00 ($20)
2. Refer to the USART description for details on how to access UBRRH and UCSRC.
3. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O Memory addresses
4. Some of the Status Flags are cleared by writing a logical one to them. Note that the CBI and SBI instructions will operate on
1. When the OCDEN Fuse is unprogrammed, the OSCCAL Register is always accessed on this address. Refer to the debug-
ATmega323(L)
ger specific documentation for details on how to use the OCDR Register.
should never be written.
all bits in the I/O Register, writing a one back into any flag read as set, thus clearing the flag. The CBI and SBI instructions
work with registers $00 to $1F only.
Name
TWSR
TWBR
Bit 7
TWS7
Bit 6
TWS6
Bit 5
TWS5
Two-wire Serial Interface Bit Rate Register
Bit 4
TWS4
Bit 3
TWS3
Bit 2
–
Bit 1
–
Bit 0
–
1457G–AVR–09/03
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