Manual

121
AT90S/LS8535
1041H–11/01
LD Rd, Y Load Indirect Rd ← (Y) None 2
LD Rd, Y+ Load Indirect and Post-inc. Rd ← (Y), Y ← Y + 1 None 2
LD Rd, -Y Load Indirect and Pre-dec. Y ← Y - 1, Rd ← (Y) None 2
LDD Rd, Y+q Load Indirect with Displacement Rd ← (Y + q) None 2
LD Rd, Z Load Indirect Rd ← (Z) None 2
LD Rd, Z+ Load Indirect and Post-inc. Rd ← (Z), Z ← Z + 1 None 2
LD Rd, -Z Load Indirect and Pre-dec. Z ← Z - 1, Rd ← (Z) None 2
LDD Rd, Z+q Load Indirect with Displacement Rd ← (Z + q) None 2
LDS Rd, k Load Direct from SRAM Rd ← (k) None 2
ST X, Rr Store Indirect (X)=← Rr None 2
ST X+, Rr Store Indirect and Post-inc. (X)=← Rr, X ← X + 1 None 2
ST -X, Rr Store Indirect and Pre-dec. X ← X - 1, (X) ← Rr None 2
ST Y, Rr Store Indirect (Y) ← Rr None 2
ST Y+, Rr Store Indirect and Post-inc. (Y) ← Rr, Y ← Y + 1 None 2
ST -Y, Rr Store Indirect and Pre-dec. Y ← Y - 1, (Y) ← Rr None 2
STD Y+q, Rr Store Indirect with Displacement (Y + q) ← Rr None 2
ST Z, Rr Store Indirect (Z) ← Rr None 2
ST Z+, Rr Store Indirect and Post-inc. (Z) ← Rr, Z ← Z + 1 None 2
ST -Z, Rr Store Indirect and Pre-dec. Z ← Z - 1, (Z) ← Rr None 2
STD Z+q, Rr Store Indirect with Displacement (Z + q) ← Rr None 2
STS k, Rr Store Direct to SRAM (k) ← Rr None 2
LPM Load Program Memory R0 ← (Z) None 3
IN Rd, P In Port Rd ← P None 1
OUT P, Rr Out Port P ← Rr None 1
PUSH Rr Push Register on Stack STACK ← Rr None 2
POP Rd Pop Register from Stack Rd ← STACK None 2
BIT AND BIT-TEST INSTRUCTIONS
SBI P, b Set Bit in I/O Register I/O(P,b) ← 1 None 2
CBI P, b Clear Bit in I/O Register I/O(P,b) ← 0 None 2
LSL Rd Logical Shift Left Rd(n+1) ← Rd(n), Rd(0) ← 0 Z,C,N,V 1
LSR Rd Logical Shift Right Rd(n) ← Rd(n+1), Rd(7) ← 0 Z,C,N,V 1
ROL Rd Rotate Left through Carry Rd(0) ←=C, Rd(n+1) ← Rd(n), C ←=Rd(7) Z,C,N,V 1
ROR Rd Rotate Right through Carry Rd(7) ←=C, Rd(n) ← Rd(n+1), C ←=Rd(0) Z,C,N,V 1
ASR Rd Arithmetic Shift Right Rd(n) ← Rd(n+1), n = 0..6 Z,C,N,V 1
SWAP Rd Swap Nibbles Rd(3..0) ← Rd(7..4), Rd(7..4) ← Rd(3..0) None 1
BSET s Flag Set SREG(s) ← 1 SREG(s) 1
BCLR s Flag Clear SREG(s) ← 0 SREG(s) 1
BST Rr, b Bit Store from Register to T T ← Rr(b) T 1
BLD Rd, b Bit Load from T to Register Rd(b) ← T None 1
SEC Set Carry C ← 1C1
CLC Clear Carry C ← 0C1
SEN Set Negative Flag N ← 1N1
CLN Clear Negative Flag N ← 0N1
SEZ Set Zero Flag Z ← 1Z1
CLZ Clear Zero Flag Z ← 0Z1
SEI Global Interrupt Enable I ← 1I1
CLI Global Interrupt Disable I=← 0I1
SES Set Signed Test Flag S ← 1S1
CLS Clear Signed Test Flag S ← 0S1
SEV Set Two’s Complement Overflow V ← 1V1
CLV Clear Two’s Complement Overflow V ← 0V1
SET Set T in SREG T ← 1T1
CLT Clear T in SREG T ← 0T1
SEH Set Half-carry Flag in SREG H ← 1H1
CLH Clear Half-carry Flag in SREG H ← 0H1
NOP No Operation None 1
SLEEP Sleep (see specific descr. for Sleep function) None 1
WDR Watchdog Reset (see specific descr. for WDR/timer) None 1
Instruction Set Summary (Continued)
Mnemonic Operands Description Operation Flags # Clocks