6.7.2 Status Register (SREG) and Boolean Formula

ITHSVNZC
I
If (s == 7) then I ← 0, else unchanged.
T
If (s == 6) then T ← 0, else unchanged.
H
If (s == 5) then H ← 0, else unchanged.
S
If (s == 4) then S ← 0, else unchanged.
V
If (s == 3) then V ← 0, else unchanged.
N
If (s == 2) then N ← 0, else unchanged.
Z
If (s == 1) then Z ← 0, else unchanged.
C
If (s == 0) then C ← 0, else unchanged.

Example:

      bclr  0  ; Clear Carry flag
      bclr  7  ; Disable interrupts
Words
1 (2 bytes)
Table 6-7. Cycles
NameCycles
AVRe1
AVRxm1
AVRxt1
AVRrc1