Rainbow Electronics atmega16p - Manual (Page 7)

7
ATmega16(L)
2466BS–09/01
Notes: 1. When the OCDEN fuse is unprogrammed, the OSCCAL register is always accessed on this address. Refer to the debugger
specific documentation for details on how to use the OCDR register.
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
should never be written.
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
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.
$02 ($22) TWAR TWA6 TWA5 TWA4 TWA3 TWA2 TWA1 TWA0 TWGCE 173
$01 ($21) TWSR TWS7 TWS6 TWS5 TWS4 TWS3 - TWPS1 TWPS0 172
$00 ($20) TWBR 2-wire Serial Interface Bit Rate Register 171
Register Summary (Continued)
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page