EEARL and EEARH

The EEARL and EEARH register pair represents the 16-bit value, EEAR. The low byte [7:0] (suffix L) is accessible at the original offset. The high byte [15:8] (suffix H) can be accessed at offset + 0x01. For more details on reading and writing 16-bit registers, refer to Accessing 16-bit Registers.

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.

Bit15	14	13	12	11	10	9	8
						EEAR[9:8]
Access						R/W	R/W
Reset						x	x
Bit7	6	5	4	3	2	1	0
EEAR[7:0]
AccessR/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Resetx	x	x	x	x	x	x	x

Bits 9:0 – EEAR[9:0]: EEPROM Address

EEPROM Address

The EEPROM Address Registers – EEARH and EEARL specify the EEPROM address in the 1024 Bytes EEPROM space. The EEPROM data bytes are addressed linearly between 0 and 1023. The initial value of EEAR is undefined. A proper value must be written before the EEPROM may be accessed.