Atmel AVR XMEGA AU series

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8331B–AVR–03/12
Atmel AVR XMEGA AU
4.15.5 DATA1 – Data register 1
• Bit 7:0 – DATA[15:8]: Data Register Byte 1
This register gives the data value byte 1 when accessing NVM locations.
4.15.6 DATA2 – Data register 2
• Bit 7:0 – DATA[23:16]: Data Register 2
This register gives the data value byte 2 when accessing NVM locations.
4.15.7 CMD – Command Register
• Bit 7 – Reserved
This bit is unused and reserved for future use. For compatibility with future devices, always write
this bit to zero when this register is written.
• Bit 6:0 – CMD[6:0]: Command
These bits define the programming commands for the flash. Bit 6 is only set for external pro-
gramming commands. See ”Memory Programming” on page 431” for programming commands.
4.15.8 CTRLA – Control register A
• Bit 7:1 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always
write these bits to zero when this register is written.
Bit 76543210
+0x05 DATA[15:8] DATA1
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0
Bit 76543210
+0x06 DATA[23:16] DATA2
Read/Write R/W R/W R/W R/W R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0
Bit 76543210
+0x0A – CMD[6:0] CMD
Read/Write R R/W R/W R/W R/W R/W R/W R/W
Initial Value 0 0 0 0 0 0 0 0
Bit 76543210
+0x0B – – – – – – –CMDEXCTRLA
Read/Write RRRRRRRS
Initial Value 0 0 0 0 0 0 0 0