PIC16C57-XT Datasheet, PDF (53/194 Pages) Microchip Technology – EPROM/ROM-Based 8-bit CMOS Microcontroller Series

PIC16C5X
ADDWF
Add W and f
Syntax:
[ label ] ADDWF f,d
Operands:
0 ≤ f ≤ 31
d ∈ [0,1]
Operation:
(W) + (f) → (dest)
Status Affected: C, DC, Z
Encoding: 0001 11df ffff
Description:
Add the contents of the W register
and register ’f’. If ’d’ is 0 the result
is stored in the W register. If ’d’ is
’1’ the result is stored back in
register ’f’.
Words:
1
Cycles:
1
Example:
ADDWF TEMP_REG, 0
Before Instruction
W
=
TEMP_REG =
After Instruction
W
=
TEMP_REG =
0x17
0xC2
0xD9
0xC2
ANDLW
AND literal with W
Syntax:
Operands:
Operation:
[ label ] ANDLW k
0 ≤ k ≤ 255
(W).AND. (k) → (W)
Status Affected: Z
Encoding:
1110 kkkk kkkk
Description:
The contents of the W register are
AND’ed with the eight-bit literal 'k'.
The result is placed in the W regis-
ter.
Words:
1
Cycles:
1
Example:
ANDLW H’5F’
Before Instruction
W = 0xA3
After Instruction
W = 0x03
ANDWF
AND W with f
Syntax:
[ label ] ANDWF f,d
Operands:
0 ≤ f ≤ 31
d ∈ [0,1]
Operation:
(W) .AND. (f) → (dest)
Status Affected: Z
Encoding:
0001 01df ffff
Description:
The contents of the W register are
AND’ed with register 'f'. If 'd' is 0
the result is stored in the W regis-
ter. If 'd' is '1' the result is stored
back in register 'f'.
Words:
1
Cycles:
1
Example:
ANDWF TEMP_REG, 1
Before Instruction
W
=
TEMP_REG =
After Instruction
W
=
TEMP_REG =
0x17
0xC2
0x17
0x02
BCF
Bit Clear f
Syntax:
[ label ] BCF f,b
Operands:
0 ≤ f ≤ 31
0≤b≤7
Operation:
0 → (f<b>)
Status Affected: None
Encoding:
0100 bbbf ffff
Description:
Bit 'b' in register 'f' is cleared.
Words:
1
Cycles:
1
Example:
BCF FLAG_REG, 7
Before Instruction
FLAG_REG =
After Instruction
FLAG_REG =
0xC7
0x47
© 2002 Microchip Technology Inc.
Preliminary
DS30453D-page 51