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Instruction set summary, Attiny26(l) – Rainbow Electronics ATtiny26L User Manual

Page 139

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139

ATtiny26(L)

1477B–AVR–04/02

Instruction Set Summary

Mnemonic

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

BRANCH INSTRUCTIONS

RJMP

k

Relative Jump

PC

← PC + k + 1

None

2

IJMP

Indirect Jump to (Z)

PC

← Z

None

2

RCALL

k

Relative Subroutine Call

PC

← PC + k + 1

None

3

ICALL

Indirect Call to (Z)

PC

← Z

None

3

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

BRIE

k

Branch if Interrupt Enabled

if (I = 1) then PC

← PC + k + 1

None

1/2

BRID

k

Branch if Interrupt Disabled

if (I = 0) then PC

← PC + k + 1

None

1/2

DATA TRANSFER INSTRUCTIONS

MOV

Rd, Rr

Move between Registers

Rd

← Rr

None

1

LDI

Rd, K

Load Immediate

Rd

← K

None

1

LD

Rd, X

Load Indirect

Rd

← (X)

None

2

LD

Rd, X+

Load Indirect and Post-inc.

Rd

← (X), X ← X + 1

None

2

LD

Rd, -X

Load Indirect and Pre-dec.

X

← X - 1, Rd ← (X)

None

2