PIC16F688

Manufacturer Part NumberPIC16F688
ManufacturerMicrochip Technology Inc.
PIC16F688 datasheet
 


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PIC16F688
BTFSS
Bit Test f, Skip if Set
Syntax:
[ label ] BTFSS f,b
0 ≤ f ≤ 127
Operands:
0 ≤ b < 7
Operation:
skip if (f<b>) = 1
Status Affected:
None
Description:
If bit ‘b’ in register ‘f’ is ‘0’, the next
instruction is executed.
If bit ‘b’ is ‘1’, then the next
instruction is discarded and a NOP
is executed instead, making this a
two-cycle instruction.
CALL
Call Subroutine
Syntax:
[ label ] CALL k
0 ≤ k ≤ 2047
Operands:
Operation:
(PC)+ 1→ TOS,
k → PC<10:0>,
(PCLATH<4:3>) → PC<12:11>
Status Affected:
None
Description:
Call Subroutine. First, return
address (PC + 1) is pushed onto
the stack. The eleven-bit
immediate address is loaded into
PC bits <10:0>. The upper bits of
the PC are loaded from PCLATH.
CALL is a two-cycle instruction.
CLRF
Clear f
Syntax:
[ label ] CLRF
f
0 ≤ f ≤ 127
Operands:
00h → (f)
Operation:
1 → Z
Status Affected:
Z
Description:
The contents of register ‘f’ are
cleared and the Z bit is set.
CLRW
Clear W
Syntax:
[ label ] CLRW
Operands:
None
00h → (W)
Operation:
1 → Z
Status Affected:
Z
Description:
W register is cleared. Zero bit (Z)
is set.
DS41203D-page 132
CLRWDT
Clear Watchdog Timer
Syntax:
[ label ] CLRWDT
Operands:
None
00h → WDT
Operation:
0 → WDT prescaler,
1 → TO
1 → PD
Status Affected:
TO, PD
Description:
CLRWDT instruction resets the
Watchdog Timer. It also resets the
prescaler of the WDT.
Status bits TO and PD are set.
COMF
Complement f
Syntax:
[ label ] COMF
f,d
0 ≤ f ≤ 127
Operands:
d ∈ [0,1]
(f) → (destination)
Operation:
Status Affected:
Z
Description:
The contents of register ‘f’ are
complemented. If ‘d’ is ‘0’, the
result is stored in W. If ‘d’ is ‘1’,
the result is stored back in
register ‘f’.
DECF
Decrement f
Syntax:
[ label ] DECF f,d
0 ≤ f ≤ 127
Operands:
d ∈ [0,1]
(f) - 1 → (destination)
Operation:
Status Affected:
Z
Description:
Decrement 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’.
© 2007 Microchip Technology Inc.