Atmel AVR - Page 141

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since it is not cleared by hardware while entering ISR. This bit should be modified using SEI and CLI

instructions when needed.

Atmel AVR Instruction Set Manual [OTHER]

Atmel-0856L-AVR-Instruction-Set-Manual_Other-11/2016

141

Main Page

Instruction Set Nomenclature1
- Table of Contents2
1 I/O Registers13
- RAMPX, RAMPY, and RAMPZ13
- Rampd13
- Eind13
- Stack13
- Flags13
2 The Program and Data Addressing Modes14
- Register Direct, Single Register Rd14
- Register Direct - Two Registers, Rd and Rr15
- I/O Direct15
- Data Direct16
- Data Indirect with Displacement16
- Data Indirect17
- Data Indirect with Pre-Decrement17
- Data Indirect with Post-Increment18
- Program Memory Constant Addressing Using the LPM, ELPM, and SPM Instructions18
- Program Memory with Post-Increment Using the LPM Z+ and ELPM Z+ Instruction19
- Direct Program Addressing, JMP and CALL19
- Indirect Program Addressing, IJMP and ICALL20
- Relative Program Addressing, RJMP and RCALL20
3 Conditional Branch Summary21
4 Instruction Set Summary22
5 ADC - Add with Carry30
- Description30
- Status Register (SREG) and Boolean Formula30
6 ADD - Add Without Carry32
- Description32
- Status Register (SREG) and Boolean Formula32
7 ADIW - Add Immediate to Word33
- Description33
- Status Register (SREG) and Boolean Formula33
8 AND - Logical and35
- Description35
- Status Register (SREG) and Boolean Formula35
9 ANDI - Logical and with Immediate36
- Description36
- Status Register (SREG) and Boolean Formula36
10 ASR - Arithmetic Shift Right37
- Description37
- Status Register (SREG) and Boolean Formula37
11 BCLR - Bit Clear in SREG38
- Description38
- Status Register (SREG) and Boolean Formula38
12 BLD - Bit Load from the T Flag in SREG to a Bit in Register39
- Description39
- Status Register (SREG) and Boolean Formula39
13 BRBC - Branch if Bit in SREG Is Cleared40
- Description40
- Status Register (SREG) and Boolean Formula40
14 BRBS - Branch if Bit in SREG Is Set41
- Description41
- Status Register (SREG) and Boolean Formula41
15 BRCC - Branch if Carry Cleared42
- Description42
- Status Register (SREG) and Boolean Formula42
16 BRCS - Branch if Carry Set43
- Description43
- Status Register (SREG) and Boolean Formula43
17 BREAK - Break44
- Description44
- Status Register (SREG) and Boolean Formula44
18 BREQ - Branch if Equal45
- Description45
- Status Register (SREG) and Boolean Formula45
19 BRGE - Branch if Greater or Equal (Signed)46
- Description46
- Status Register (SREG) and Boolean Formula46
20 BRHC - Branch if Half Carry Flag Is Cleared47
- Description47
- Status Register (SREG) and Boolean Formula47
21 BRHS - Branch if Half Carry Flag Is Set48
- Description48
- Status Register (SREG) and Boolean Formula48
22 BRID - Branch if Global Interrupt Is Disabled49
- Description49
- Status Register (SREG) and Boolean Formula49
23 BRIE - Branch if Global Interrupt Is Enabled50
- Description50
- Status Register (SREG) and Boolean Formula50
24 BRLO - Branch if Lower (Unsigned)51
- Description51
- Status Register (SREG) and Boolean Formula51
25 BRLT - Branch if Less than (Signed)52
- Description52
- Status Register (SREG) and Boolean Formula52
26 BRMI - Branch if Minus53
- Description53
- Status Register (SREG) and Boolean Formula53
27 BRNE - Branch if Not Equal54
- Description54
- Status Register (SREG) and Boolean Formula54
28 BRPL - Branch if Plus55
- Description55
- Status Register (SREG) and Boolean Formula55
29 BRSH - Branch if same or Higher (Unsigned)56
- Description56
- Status Register (SREG) and Boolean Formula56
30 BRTC - Branch if the T Flag Is Cleared57
- Description57
- Status Register (SREG) and Boolean Formula57
31 BRTS - Branch if the T Flag Is Set58
- Description58
- Status Register (SREG) and Boolean Formula58
32 BRVC - Branch if Overflow Cleared59
- Description59
- Status Register (SREG) and Boolean Formula59
33 BRVS - Branch if Overflow Set60
- Description60
- Status Register (SREG) and Boolean Formula60
34 BSET - Bit Set in SREG61
- Description61
- Status Register (SREG) and Boolean Formula61
35 BST - Bit Store from Bit in Register to T Flag in SREG62
- Description62
- Status Register (SREG) and Boolean Formula62
36 CALL - Long Call to a Subroutine63
- Description63
- Status Register (SREG) and Boolean Formula63
37 CBI - Clear Bit in I/O Register65
- Description65
- Status Register (SREG) and Boolean Formula65
38 CBR - Clear Bits in Register66
- Description66
- Status Register (SREG) and Boolean Formula66
39 CLC - Clear Carry Flag67
- Description67
- Status Register (SREG) and Boolean Formula67
40 CLH - Clear Half Carry Flag68
- Description68
- Status Register (SREG) and Boolean Formula68
151 CLI - Clear Global Interrupt Flag69
- Description69
- Status Register (SREG) and Boolean Formula69
42 CLN - Clear Negative Flag70
- Description70
- Status Register (SREG) and Boolean Formula70
43 CLR - Clear Register71
- Description71
- Status Register (SREG) and Boolean Formula71
44 CLS - Clear Signed Flag72
- Description72
- Status Register (SREG) and Boolean Formula72
45 CLT - Clear T Flag73
- Description73
- Status Register (SREG) and Boolean Formula73
155 CLV - Clear Overflow Flag74
- Description74
- Status Register (SREG) and Boolean Formula74
47 CLZ - Clear Zero Flag75
- Description75
- Status Register (SREG) and Boolean Formula75
48 COM - One's Complement76
- Description76
- Status Register (SREG) and Boolean Formula76
49 CP - Compare77
- Description77
- Status Register (SREG) and Boolean Formula77
50 CPC - Compare with Carry79
- Description79
- Status Register (SREG) and Boolean Formula79
51 CPI - Compare with Immediate81
- Description81
- Status Register (SREG) and Boolean Formula81
52 CPSE - Compare Skip if Equal83
- Description83
- Status Register (SREG) and Boolean Formula83
53 DEC - Decrement84
- Description84
- Status Register and Boolean Formula84
54 DES - Data Encryption Standard86
- Description86
55 EICALL - Extended Indirect Call to Subroutine87
- Description87
- Status Register (SREG) and Boolean Formula87
56 EIJMP - Extended Indirect Jump88
- Description88
- Status Register (SREG) and Boolean Formula88
57 ELPM - Extended Load Program Memory89
- Description89
- Status Register (SREG) and Boolean Formula90
58 EOR - Exclusive or91
- Description91
- Status Register (SREG) and Boolean Formula91
59 FMUL - Fractional Multiply Unsigned92
- Description92
- Status Register (SREG) and Boolean Formula92
60 FMULS - Fractional Multiply Signed94
- Description94
- Status Register (SREG) and Boolean Formula94
61 FMULSU - Fractional Multiply Signed with Unsigned96
- Description96
- Status Register (SREG) and Boolean Formula96
62 ICALL - Indirect Call to Subroutine98
- Description98
- Status Register (SREG) and Boolean Formula98
63 IJMP - Indirect Jump99
- Description99
- Status Register (SREG) and Boolean Formula99
64 IN - Load an I/O Location to Register100
- Description100
- Status Register (SREG) and Boolean Formula100
65 INC - Increment101
- Description101
- Status Register and Boolean Formula101
66 JMP - Jump103
- Description103
- Status Register (SREG) and Boolean Formula103
67 LAC - Load and Clear104
- Description104
- Status Register (SREG) and Boolean Formula104
68 LAS - Load and Set105
- Description105
- Status Register (SREG) and Boolean Formula105
69 LAT - Load and Toggle106
- Description106
- Status Register (SREG) and Boolean Formula106
70 LD - Load Indirect from Data Space to Register Using Index X107
- Description107
- Status Register (SREG) and Boolean Formula108
71 LD (LDD) - Load Indirect from Data Space to Register Using Index y109
- Description109
- Status Register (SREG) and Boolean Formula110
72 LD (LDD) - Load Indirect from Data Space to Register Using Index Z112
- Description112
- Status Register (SREG) and Boolean Formula113
73 LDI - Load Immediate115
- Description115
- Status Register (SREG) and Boolean Formula115
74 LDS - Load Direct from Data Space116
- Description116
- Status Register (SREG) and Boolean Formula116
75 LDS (16-Bit) - Load Direct from Data Space117
- Description117
- Status Register (SREG) and Boolean Formula117
76 LPM - Load Program Memory118
- Description118
- Status Register (SREG) and Boolean Formula118
77 LSL - Logical Shift Left120
- Description120
- Status Register (SREG) and Boolean Formula120
78 LSR - Logical Shift Right122
- Description122
- Status Register (SREG) and Boolean Formula122
79 MOV - Copy Register123
- Description123
- Status Register (SREG) and Boolean Formula123
80 MOVW - Copy Register Word124
- Description124
- Status Register (SREG) and Boolean Formula124
81 MUL - Multiply Unsigned125
- Description125
- Status Register (SREG) and Boolean Formula125
82 MULS - Multiply Signed126
- Description126
- Status Register (SREG) and Boolean Formula126
83 MULSU - Multiply Signed with Unsigned127
- Description127
- Status Register (SREG) and Boolean Formula127
84 NEG - Two's Complement129
- Description129
- Status Register (SREG) and Boolean Formula129
85 NOP - no Operation131
- Description131
- Status Register (SREG) and Boolean Formula131
86 OR - Logical or132
- Description132
- Status Register (SREG) and Boolean Formula132
87 ORI - Logical or with Immediate133
- Description133
- Status Register (SREG) and Boolean Formula133
88 OUT - Store Register to I/O Location134
- Description134
- Status Register (SREG) and Boolean Formula134
89 POP - Pop Register from Stack135
- Description135
- Status Register (SREG) and Boolean Formula135
90 PUSH - Push Register on Stack136
- Description136
- Status Register (SREG) and Boolean Formula136
91 RCALL - Relative Call to Subroutine137
- Description137
- Status Register (SREG) and Boolean Formula137
92 RET - Return from Subroutine139
- Description139
- Status Register (SREG) and Boolean Formula139
93 RETI - Return from Interrupt140
- Description140
- Status Register (SREG) and Boolean Formula140
94 RJMP - Relative Jump142
- Description142
- Status Register (SREG) and Boolean Formula142
95 ROL - Rotate Left Trough Carry143
- Description143
- Status Register (SREG) and Boolean Formula143
96 ROR - Rotate Right through Carry145
- Description145
- Status Register (SREG) and Boolean Formula145
97 SBC - Subtract with Carry147
- Description147
- Status Register (SREG) and Boolean Formula147
98 SBCI - Subtract Immediate with Carry SBI - Set Bit in I/O Register149
- Description149
- Status Register (SREG) and Boolean Formula149
99 SBI - Set Bit in I/O Register151
- Description151
- Status Register (SREG) and Boolean Formula151
100 SBIC - Skip if Bit in I/O Register Is Cleared152
- Description152
- Status Register (SREG) and Boolean Formula152
101 SBIS - Skip if Bit in I/O Register Is Set153
- Description153
- Status Register (SREG) and Boolean Formula153
102 SBIW - Subtract Immediate from Word154
- Description154
- Status Register (SREG) and Boolean Formula154
103 SBR - Set Bits in Register156
- Description156
- Status Register (SREG) and Boolean Formula156
104 SBRC - Skip if Bit in Register Is Cleared157
- Description157
- Status Register (SREG) and Boolean Formula157
105 SBRS - Skip if Bit in Register Is Set158
- Description158
- Status Register (SREG) and Boolean Formula158
106 SEC - Set Carry Flag159
- Description159
- Status Register (SREG) and Boolean Formula159
107 SEH - Set Half Carry Flag160
- Description160
- Status Register (SREG) and Boolean Formula160
108 SEI - Set Global Interrupt Flag161
- Description161
- Status Register (SREG) and Boolean Formula161
109 SEN - Set Negative Flag162
- Description162
- Status Register (SREG) and Boolean Formula162
110 SER - Set All Bits in Register163
- Description163
- Status Register (SREG) and Boolean Formula163
111 SES - Set Signed Flag164
- Description164
- Status Register (SREG) and Boolean Formula164
112 SET - Set T Flag165
- Description165
- Status Register (SREG) and Boolean Formula165
113 SEV - Set Overflow Flag166
- Description166
- Status Register (SREG) and Boolean Formula166
114 SEZ - Set Zero Flag167
- Description167
- Status Register (SREG) and Boolean Formula167
115 Sleep168
- Description168
- Status Register (SREG) and Boolean Formula168
116 SPM - Store Program Memory169
- Description169
- Status Register (SREG) and Boolean Formula169
117 SPM #2 - Store Program Memory171
- Description171
- Status Register (SREG) and Boolean Formula171
118 ST - Store Indirect from Register to Data Space Using Index X173
- Description173
- Status Register (SREG) and Boolean Formula174
119 ST (STD) - Store Indirect from Register to Data Space Using Index y175
- Description175
- Status Register (SREG) and Boolean Formula176
120 ST (STD) - Store Indirect from Register to Data Space Using Index Z177
- Description177
- Status Register (SREG) and Boolean Formula178
121 STS - Store Direct to Data Space179
- Description179
- Status Register (SREG) and Boolean Formula179
122 STS (16-Bit) - Store Direct to Data Space180
- Description180
- Status Register (SREG) and Boolean Formula180
123 SUB - Subtract Without Carry181
- Description181
- Status Register and Boolean Formula181
124 SUBI - Subtract Immediate183
- Description183
- Status Register and Boolean Formula183
125 SWAP - Swap Nibbles185
- Description185
- Status Register (SREG) and Boolean Formula185
126 TST - Test for Zero or Minus186
- Description186
- Status Register (SREG) and Boolean Formula186
127 WDR - Watchdog Reset187
- Description187
- Status Register (SREG) and Boolean Formula187
128 XCH - Exchange188
- Description188
- Status Register (SREG) and Boolean Formula188
129 Datasheet Revision History189
- Rev.0856L - 11/2016189
- Rev.0856K - 04/2016189
- Rev.0856J - 07/2014189
- Rev.0856I - 07/2010189
- Rev.0856H - 04/2009189
- Rev.0856G - 07/2008190
- Rev.0856F - 05/2008190

Atmel AVR - Page 141

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