PIC16F877-20/P Microchip Technology, PIC16F877-20/P Datasheet - Page 549

• 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.
IORWF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
Example 1
Example 2
Example 3
Q1
Decode
Case 1:
Case 2:
Q2
register 'f'
[ label ]
0
d
(W).OR. (f)
Z
Inclusive OR the W register with register 'f'. If 'd' is 0 the result is placed in
the W register. If 'd' is 1 the result is placed back in register 'f'.
1
1
Before Instruction
After Instruction
Before Instruction
After Instruction
Before Instruction
After Instruction
Before Instruction
After Instruction
Read
IORWF
IORWF
IORWF
00
f
[0,1]
Section 29. Instruction Set
127
RESULT=0x13
W
RESULT=0x13
W
Z
W
FSR =
Contents of Address (FSR) = 0x30
W
FSR =
Contents of Address (FSR) = 0x37
Z
RESULT=0x13
W
RESULT=0x93
W
Z
RESULT=0x00
W
RESULT=0x00
W
Z
Inclusive OR W with f
IORWF
RESULT, 0
RESULT, 1
INDF, 1
0100
Q3
Process
=
=
=
=
=
=
=
=
=
=
=
=
destination
data
0x91
0x93
0
0x17
0xC2
0x17
0xC2
0
0x91
0x91
0
0x00
0x00
1
dfff
f,d
Q4
destination
Write to
ffff
DS31029A-page 29-27
29