Atmel ATmega128

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2467S–AVR–07/09
ATmega128
Notes: 1. For compatibility with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses
should never be written.
2. 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.
$01 ($21) PINE PINE7 PINE6 PINE5 PINE4 PINE3 PINE2 PINE1 PINE0 88
$00 ($20) PINF PINF7 PINF6 PINF5 PINF4 PINF3 PINF2 PINF1 PINF0 89
Register Summary (Continued)
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page