ATxmega256A3BU CPU registers The 9 registers of CPU (CPU), from 0x34, with their reset value and every field. The ATxmega256A3BU has 695 registers in 66 peripherals, one page each.
CPU CPU CCPConfiguration Change Protection
Address 0x34 I/O 0x14
Reset 0x00
Access read/write 7 CCP7 6 CCP6 5 CCP5 4 CCP4 3 CCP3 2 CCP2 1 CCP1 0 CCP0 1 field
Field Bits What it does CCP 7:0 CCP signature157 SPM Instruction Protection216 IO Register Protection
RAMPDRamp D
Address 0x38 I/O 0x18
Reset 0x00
Access read/write 7 – 6 – 5 – 4 – 3 – 2 – 1 – 0 – RAMPXRamp X
Address 0x39 I/O 0x19
Reset 0x00
Access read/write 7 – 6 – 5 – 4 – 3 – 2 – 1 – 0 – RAMPYRamp Y
Address 0x3A I/O 0x1A
Reset 0x00
Access read/write 7 – 6 – 5 – 4 – 3 – 2 – 1 – 0 – RAMPZRamp Z
Address 0x3B I/O 0x1B
Reset 0x00
Access read/write 7 – 6 – 5 – 4 – 3 – 2 – 1 – 0 – EINDExtended Indirect Jump
Address 0x3C I/O 0x1C
Reset 0x00
Access read/write 7 – 6 – 5 – 4 – 3 – 2 – 1 – 0 – SPLStack Pointer Low
Address 0x3D I/O 0x1D
Reset 0xFF
Access read/write 7 – 6 – 5 – 4 – 3 – 2 – 1 – 0 – SPHStack Pointer High
Address 0x3E I/O 0x1E
Reset 0x5F
Access read/write 7 – 6 – 5 – 4 – 3 – 2 – 1 – 0 – SREGStatus Register
Address 0x3F I/O 0x1F
Reset 0x00
Access read/write 7 I 6 T 5 H 4 S 3 V 2 N 1 Z 0 C 8 fields
Field Bits What it does I 7 Global Interrupt Enable Flag T 6 Transfer Bit H 5 Half Carry Flag S 4 N Exclusive Or V Flag V 3 Two's Complement Overflow Flag N 2 Negative Flag Z 1 Zero Flag C 0 Carry Flag
BETA