8-bit AVR Microcontrollers

Port D Input Pins Address

When addressing I/O registers as data space using LD and ST instructions, the provided offset must be used. When using the I/O specific commands IN and OUT, the offset is reduced by 0x20, resulting in an I/O address offset within 0x00 - 0x3F.

The device is a complex microcontroller with more peripheral units than can be supported within the 64 locations reserved in Opcode for the IN and OUT instructions. For the extended I/O space from 0x60 in SRAM, only the ST/STS/STD and LD/LDS/LDD instructions can be used.

Name:
PIND
Offset:
0x29
Reset:
N/A
Access:
When addressing as I/O Register: address offset is 0x09
Bit76543210
PIND7PIND6PIND5PIND4PIND3PIND2PIND1PIND0
AccessR/WR/WR/WR/WR/WR/WR/WR/W
Resetxxxxxxxx

Bits 0, 1, 2, 3, 4, 5, 6, 7 – PIND: Port D Input Pins Address

Port D Input Pins Address

Writing to the pin register provides toggle functionality for I/O. Refer to Toggling the Pin.