PIC16C505-04I/P Microchip Technology Inc., PIC16C505-04I/P Datasheet - Page 44

• Manufacturer Part Number: PIC16C505-04I/P
• Description: 14 PIN, 1.5 KB OTP, 72 RAM, 12 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC16C505-04I/P

• Cpu Speed: 5 MIPS
• Eeprom Memory: 0 Bytes
• Input Output: 11
• Memory Type: OTP
• Number Of Bits: 8
• Package Type: 14-pin PDIP
• Programmable Memory: 1.5K Bytes
• Ram Size: 72 Bytes
• Speed: 4 MHz
• Timers: 1- 8-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

PIC16C505
COMF
Syntax:
Operands:
Operation:
Status Affected: Z
Encoding:
Description:
Words:
Cycles:
Example:
DECF
Syntax:
Operands:
Operation:
Status Affected: Z
Encoding:
Description:
Words:
Cycles:
Example:
DS40192C-page 44
Before Instruction
After Instruction
Before Instruction
After Instruction
REG1
REG1
W
CNT
Z
CNT
Z
Complement f
[ label ] COMF
0
d
(f)
The contents of register ’f’ are
complemented. If ’d’ is 0, the result
is stored in the W register. If ’d’ is
1, the result is stored back in regis-
ter ’f’.
1
1
COMF
=
=
=
Decrement f
[ label ] DECF f,d
0
d
(f) – 1
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'.
1
1
DECF
=
=
=
=
0010
0000
f
f
[0,1]
[0,1]
0x13
0x13
0xEC
0x01
0
0x00
1
(dest)
31
31
REG1,0
(dest)
CNT,
01df
11df
1
f,d
ffff
ffff
DECFSZ
Syntax:
Operands:
Operation:
Status Affected: None
Encoding:
Description:
Words:
Cycles:
Example:
GOTO
Syntax:
Operands:
Operation:
Status Affected: None
Encoding:
Description:
Words:
Cycles:
Example:
Before Instruction
After Instruction
After Instruction
PC
CNT
if CNT
PC
if CNT
PC
PC =
Decrement f, Skip if 0
[ label ] DECFSZ f,d
0
d
(f) – 1
The contents of register 'f' are dec-
remented. If 'd' is 0, the result is
placed in the W register. If 'd' is 1,
the result is placed back in register
'f'.
If the result is 0, the next instruc-
tion, which is already fetched, is
discarded and a NOP is executed
instead making it a two cycle
instruction.
1
1(2)
HERE
CONTINUE
=
=
=
=
=
Unconditional Branch
[ label ]
0
k
STATUS<6:5>
GOTO is an unconditional branch.
The 9-bit immediate value is
loaded into PC bits <8:0>. The
upper bits of PC are loaded from
STATUS<6:5>. GOTO is a two cycle
instruction.
1
2
GOTO THERE
address (THERE)
0010
101k
f
k
[0,1]
address (HERE)
CNT - 1;
0,
address (CONTINUE);
0,
address (HERE+1)
PC<8:0>;
31
511
1999 Microchip Technology Inc.
d;
GOTO k
11df
kkkk
DECFSZ
GOTO
skip if result = 0
PC<10:9>
ffff
kkkk
CNT, 1
LOOP