PIC16F872-E/SS Microchip Technology, PIC16F872-E/SS Datasheet - Page 544

• Manufacturer Part Number: PIC16F872-E/SS
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,SSOP,28PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F872-E/SS

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 22
• Program Memory Size: 3.5KB (2K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 64 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-SSOP
• Package: 28SSOP
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 20 MHz
• Operating Supply Voltage: 5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 22
• Interface Type: I2C/SPI
• On-chip Adc: 5-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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.