PIC16F84A-04E/SO Microchip Technology, PIC16F84A-04E/SO Datasheet - Page 544

• Manufacturer Part Number: PIC16F84A-04E/SO
• Description: IC MCU CMOS 4MHZ 1K FLASH 18SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F84A-04E/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 13
• Program Memory Size: 1.75KB (1K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 68 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 18-SOIC (7.5mm Width)
• For Use With: I3-DB16F84A - BOARD DAUGHTER ICEPIC3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Connectivity: -

PICmicro MID-RANGE MCU FAMILY
DS31029A-page 29-22
DECFSZ
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
If skip (2nd cycle):
Example
Q1
Q1
operation
Case 1:
Case 2:
Decode
No
Q2
Q2
register 'f'
operation
Before Instruction
After Instruction
Before Instruction
After Instruction
Read
HERE
CONTINUE •
[ label ] DECFSZ f,d
0
d
(f) - 1
None
The contents of register 'f' are decremented. 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, then the next instruction (fetched during the current
instruction execution) is discarded and a NOP is executed instead, mak-
ing this a 2 cycle instruction.
1
1(2)
No
PC
CNT
CNT
PC
PC
CNT
CNT
PC
00
f
[0,1]
127
=
=
=
=
=
=
=
=
Q3
Q3
destination; skip if result = 0
Decrement f, Skip if 0
operation
DECFSZ
GOTO
•
•
Process
1011
data
address
0x01
0x00
address CONTINUE
address
0x02
0x01
address
No
dfff
HERE
HERE
HERE
CNT, 1
LOOP
Q4
Q4
destination
operation
Write to
+ 1
No
ffff
1997 Microchip Technology Inc.