PIC16F877-20/P Microchip Technology, PIC16F877-20/P Datasheet - Page 563

• Manufacturer Part Number: PIC16F877-20/P
• Description: IC MCU FLASH 8KX14 EE 40DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F877-20/P

• Core Size: 8-Bit
• Program Memory Size: 14KB (8K x 14)
• Core Processor: PIC
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 33
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 368 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Controller Family/series: PIC16F
• No. Of I/o's: 33
• Eeprom Memory Size: 256Byte
• Ram Memory Size: 368Byte
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 444-1001 - DEMO BOARD FOR PICMICRO MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

1997 Microchip Technology Inc.
SWAPF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Example 1
Example 2
Example 3
Q1
Decode
Q2
register 'f'
[ label ] SWAPF f,d
0
d
(f<3:0>)
(f<7:4>)
None
The upper and lower nibbles of register 'f' are exchanged. If 'd' is 0 the
result is placed in W register. If 'd' is 1 the result is placed in register 'f'.
1
1
Before Instruction
After Instruction
Before Instruction
After Instruction
Before Instruction
After Instruction
Read
SWAPF
SWAPF
SWAPF
00
f
[0,1]
Section 29. Instruction Set
127
W
FSR = 0xC2
Contents of Address (FSR) = 0x20
W
FSR = 0xC2
Contents of Address (FSR) = 0x02
Swap Nibbles in f
REG, 0
REG, 1
REG1= 0xA5
REG1= 0xA5
W
REG1= 0xA5
REG1= 0x5A
INDF, 1
Q3
1110
destination<7:4>,
destination<3:0>
Process
= 0x17
= 0x17
data
= 0x5A
dfff
Q4
destination
Write to
ffff
DS31029A-page 29-41
29