STC89C53RC datasheet(73/165 Pages) STC

73 / 165 page

SETB

<bit>

Function:

Set bit

Description:

SETB sets the indicated bit to one. SETB can operate on the carry flag or any directly

addressable bit. No other flags are affected

Example:

The carry flag is cleared. Output Port 1 has been written with the value 34H (00110100B).

The instructions,

SETB

P1.0

will leave the carry flag set to 1 and change the data output on Port 1 to 35H (00110101B).

SETB

Bytes:

Cycles:

Encoding:

1 1 0 1

0 0 1 1

Operation:

SETB

← 11

SETB

bit

Bytes:

Cycles:

Encoding:

1 1 0

0 0 1 0

bit address

Operation:

SETB

(bit) ← 1

← 11

SJMP rel

Function:

Short Jump

Description:

Program control branches unconditionally to the address indicated. The branch destination is

computed by adding the signed displacement in the second instruction byte to the PC, after

incrementing the PC twice. Therefore, the range of destinations allowed is from 128bytes

preceding this instruction to 127 bytes following it.

Example:

The label “RELADR” is assigned to an instruction at program memory location 0123H. The

instruction,

SJMP

RELADR

will assemble into location 0100H. After the instruction is executed, the PC will contain the

value 0123H.

(Note: Under the above conditions the instruction following SJMP will be at 102H.Therefore,

the displacement byte of the instruction will be the relative offset (0123H - 0102H) = 21H.

Put another way, an SJMP with a displacement of 0FEH would be an one-instruction infinite

loop).

Bytes:

Cycles:

Encoding:

1 0 0 0

0 0 0 0

rel. address

Operation:

SJMP

(

PC) ← (PC)+2

← (PC)+2

(PC)+2

(PC) ← (PC)+rel

← (PC)+rel

(PC)+rel

STC89C53RC bảng dữ liệu(PDF) 73 Page - STCmicro Technology Co,.Ltd

STC89C53RC bảng dữ liệu(HTML) 73 Page - STCmicro Technology Co,.Ltd

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

bảng dữ liệu tải về

Link URL