Instruction set summary, Atmega32(l) – Rainbow Electronics ATmega32L User Manual

Page 299

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299

ATmega32(L)

2503C–AVR–10/02

Instruction Set Summary

Mnemonics

Operands

Description

Operation

Flags

#Clocks

ARITHMETIC AND LOGIC INSTRUCTIONS

ADD

Rd, Rr

Add two Registers

Rd

← Rd + Rr

Z,C,N,V,H

1

ADC

Rd, Rr

Add with Carry two Registers

Rd

← Rd + Rr + C

Z,C,N,V,H

1

ADIW

Rdl,K

Add Immediate to Word

Rdh:Rdl

← Rdh:Rdl + K

Z,C,N,V,S

2

SUB

Rd, Rr

Subtract two Registers

Rd

← Rd - Rr

Z,C,N,V,H

1

SUBI

Rd, K

Subtract Constant from Register

Rd

← Rd - K

Z,C,N,V,H

1

SBC

Rd, Rr

Subtract with Carry two Registers

Rd

← Rd - Rr - C

Z,C,N,V,H

1

SBCI

Rd, K

Subtract with Carry Constant from Reg.

Rd

← Rd - K - C

Z,C,N,V,H

1

SBIW

Rdl,K

Subtract Immediate from Word

Rdh:Rdl

← Rdh:Rdl - K

Z,C,N,V,S

2

AND

Rd, Rr

Logical AND Registers

Rd

← Rd • Rr

Z,N,V

1

ANDI

Rd, K

Logical AND Register and Constant

Rd

← Rd • K

Z,N,V

1

OR

Rd, Rr

Logical OR Registers

Rd

← Rd v Rr

Z,N,V

1

ORI

Rd, K

Logical OR Register and Constant

Rd

← Rd v K

Z,N,V

1

EOR

Rd, Rr

Exclusive OR Registers

Rd

← Rd ⊕ Rr

Z,N,V

1

COM

Rd

One’s Complement

Rd

← $FF − Rd

Z,C,N,V

1

NEG

Rd

Two’s Complement

Rd

← $00 − Rd

Z,C,N,V,H

1

SBR

Rd,K

Set Bit(s) in Register

Rd

← Rd v K

Z,N,V

1

CBR

Rd,K

Clear Bit(s) in Register

Rd

← Rd • ($FF - K)

Z,N,V

1

INC

Rd

Increment

Rd

← Rd + 1

Z,N,V

1

DEC

Rd

Decrement

Rd

← Rd − 1

Z,N,V

1

TST

Rd

Test for Zero or Minus

Rd

← Rd • Rd

Z,N,V

1

CLR

Rd

Clear Register

Rd

← Rd ⊕ Rd

Z,N,V

1

SER

Rd

Set Register

Rd

← $FF

None

1

MUL

Rd, Rr

Multiply Unsigned

R1:R0

← Rd x Rr

Z,C

2

MULS

Rd, Rr

Multiply Signed

R1:R0

← Rd x Rr

Z,C

2

MULSU

Rd, Rr

Multiply Signed with Unsigned

R1:R0

← Rd x Rr

Z,C

2

FMUL

Rd, Rr

Fractional Multiply Unsigned

R1:R0

← (Rd x Rr)

<< 1

Z,C

2

FMULS

Rd, Rr

Fractional Multiply Signed

R1:R0

← (Rd x Rr)

<< 1

Z,C

2

FMULSU

Rd, Rr

Fractional Multiply Signed with Unsigned

R1:R0

← (Rd x Rr)

<< 1

Z,C

2

BRANCH INSTRUCTIONS

RJMP

k

Relative Jump

PC

← PC + k + 1

None

2

IJMP

Indirect Jump to (Z)

PC

← Z

None

2

JMP

k

Direct Jump

PC

← k

None

3

RCALL

k

Relative Subroutine Call

PC

← PC + k + 1

None

3

ICALL

Indirect Call to (Z)

PC

← Z

None

3

CALL

k

Direct Subroutine Call

PC

← k

None

4

RET

Subroutine Return

PC

← STACK

None

4

RETI

Interrupt Return

PC

← STACK

I

4

CPSE

Rd,Rr

Compare, Skip if Equal

if (Rd = Rr) PC

← PC + 2 or 3

None

1 / 2 / 3

CP

Rd,Rr

Compare

Rd

− Rr

Z, N,V,C,H

1

CPC

Rd,Rr

Compare with Carry

Rd

− Rr − C

Z, N,V,C,H

1

CPI

Rd,K

Compare Register with Immediate

Rd

− K

Z, N,V,C,H

1

SBRC

Rr, b

Skip if Bit in Register Cleared

if (Rr(b)=0) PC

← PC + 2 or 3

None

1 / 2 / 3

SBRS

Rr, b

Skip if Bit in Register is Set

if (Rr(b)=1) PC

← PC + 2 or 3

None

1 / 2 / 3

SBIC

P, b

Skip if Bit in I/O Register Cleared

if (P(b)=0) PC

← PC + 2 or 3

None

1 / 2 / 3

SBIS

P, b

Skip if Bit in I/O Register is Set

if (P(b)=1) PC

← PC + 2 or 3

None

1 / 2 / 3

BRBS

s, k

Branch if Status Flag Set

if (SREG(s) = 1) then PC

←PC+k + 1

None

1 / 2

BRBC

s, k

Branch if Status Flag Cleared

if (SREG(s) = 0) then PC

←PC+k + 1

None

1 / 2

BREQ

k

Branch if Equal

if (Z = 1) then PC

← PC + k + 1

None

1 / 2

BRNE

k

Branch if Not Equal

if (Z = 0) then PC

← PC + k + 1

None

1 / 2

BRCS

k

Branch if Carry Set

if (C = 1) then PC

← PC + k + 1

None

1 / 2

BRCC

k

Branch if Carry Cleared

if (C = 0) then PC

← PC + k + 1

None

1 / 2

BRSH

k

Branch if Same or Higher

if (C = 0) then PC

← PC + k + 1

None

1 / 2

BRLO

k

Branch if Lower

if (C = 1) then PC

← PC + k + 1

None

1 / 2

BRMI

k

Branch if Minus

if (N = 1) then PC

← PC + k + 1

None

1 / 2

BRPL

k

Branch if Plus

if (N = 0) then PC

← PC + k + 1

None

1 / 2

BRGE

k

Branch if Greater or Equal, Signed

if (N

⊕ V= 0) then PC ← PC + k + 1

None

1 / 2

BRLT

k

Branch if Less Than Zero, Signed

if (N

⊕ V= 1) then PC ← PC + k + 1

None

1 / 2

BRHS

k

Branch if Half Carry Flag Set

if (H = 1) then PC

← PC + k + 1

None

1 / 2

BRHC

k

Branch if Half Carry Flag Cleared

if (H = 0) then PC

← PC + k + 1

None

1 / 2

BRTS

k

Branch if T Flag Set

if (T = 1) then PC

← PC + k + 1

None

1 / 2

BRTC

k

Branch if T Flag Cleared

if (T = 0) then PC

← PC + k + 1

None

1 / 2

BRVS

k

Branch if Overflow Flag is Set

if (V = 1) then PC

← PC + k + 1

None

1 / 2

BRVC

k

Branch if Overflow Flag is Cleared

if (V = 0) then PC

← PC + k + 1

None

1 / 2

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