ATMEGA128A-AUR 参数 Datasheet PDF下载

ATmega128A

5. Register Summary (Continued)

Address

$02 ($22)

$01 ($21)

$00 ($20)

Name

DDRE

PINE

PINF

Bit 7

DDE7

PINE7

PINF7

Bit 6

DDE6

PINE6

PINF6

Bit 5

DDE5

PINE5

PINF5

Bit 4

DDE4

PINE4

PINF4

Bit 3

DDE3

PINE3

PINF3

Bit 2

DDE2

PINE2

PINF2

Bit 1

DDE1

PINE1

PINF1

Bit 0

DDE0

PINE0

PINF0

Page

88

88

89

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.

19

8151GS–AVR–07/10