Datasheet

12.6.3 EEDR – The EEPROM Data Register

Name: EEDR

Offset: 0x1D [ID-000004d0]

Reset: 0x00

Property: When addressing I/O Registers as data space the offset address is 0x3D

When using the I/O specific commands IN and OUT, the I/O addresses 0x00 - 0x3F must be used. When

addressing I/O Registers as data space using LD and ST instructions, 0x20 must be added to these offset

addresses.

Bit 7 6 5 4 3 2 1 0

EEDRn[7:0]

Access

R/W R/W R/W R/W R/W R/W R/W R/W

Reset 0 0 0 0 0 0 0 0

Bits 7:0 – EEDRn[7:0] EEPROM Data [n = 7:0]

For the EEPROM write operation, the EEDR Register contains the data to be written to the EEPROM in

the address given by the EEAR Register. For the EEPROM read operation, the EEDR contains the data

read out from the EEPROM at the address given by EEAR.

• EEDR[7] is MSB

• EEDR[0] is LSB

AVR 8-Bit Microcontroller

AVR Memories

Datasheet Complete

40001974A-page 42