PIC12C508A-04I/P Microchip Technology, PIC12C508A-04I/P Datasheet - Page 52

• Manufacturer Part Number: PIC12C508A-04I/P
• Description: IC MCU OTP 512X12 8DIP
• Manufacturer: Microchip Technology
• Series: PIC® 12Cr

Specifications of PIC12C508A-04I/P

• Program Memory Type: OTP
• Program Memory Size: 768B (512 x 12)
• Package / Case: 8-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 5
• Ram Size: 25 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC12C
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 25 B
• Maximum Clock Frequency: 4 MHz
• Number Of Programmable I/os: 5
• Number Of Timers: 1
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: DVMCPA, ICE2000
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: ISPICR1 - ADAPTER IN-CIRCUIT PROGRAMMINGDVMCPA - KIT DVR BOARD EVAL SYSTEM MXDEV1DVA12XP080 - ADAPTER DEVICE FOR MPLAB-ICEAC124001 - MODULE SKT PROMATEII 8DIP/SOIC
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC12C5XX
COMF
Syntax:
Operands:
Operation:
Status Affected: Z
Encoding:
Description:
Words:
Cycles:
Example:
DECF
Syntax:
Operands:
Operation:
Status Affected: Z
Encoding:
Description:
Words:
Cycles:
Example:
DS40139E-page 52
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 comple-
mented. 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
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 decre-
mented. 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 instruction,
which is already fetched, is discarded
and an NOP is executed instead mak-
ing 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