PIC16F84A-20E/P Microchip Technology, PIC16F84A-20E/P Datasheet - Page 556

• Manufacturer Part Number: PIC16F84A-20E/P
• Description: IC MCU CMOS 20MHZ 1K FLASH 18DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F84A-20E/P

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• 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-DIP (0.300", 7.62mm)
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 68 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 13
• Number Of Timers: 8
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: ICE2000
• Minimum Operating Temperature: - 40 C
• For Use With: I3-DB16F84A - BOARD DAUGHTER ICEPIC3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Details

PICmicro MID-RANGE MCU FAMILY
DS31029A-page 29-34
RETLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Q Cycle Activity:
1st cycle:
2nd cycle:
Example
Q1
Q1
operation
Decode
No
Q2
Q2
operation
[ label ]
0
k
TOS
None
The W register is loaded with the eight bit literal 'k'. The program counter is
loaded 13-bit address at the Top of Stack (the return address). This is a
two cycle instruction.
1
2
HERE
TABLE
Before Instruction
After Instruction
literal 'k'
Read
No
11
k
W;
255
PC
W
W
PC = TOS
Return with Literal in W
CALL TABLE
•
•
•
ADDWF PC
RETLW k1
RETLW k2
•
•
•
RETLW kn
RETLW k
01xx
Q3
Q3
operation
Process
= 0x07
= value of k8
data
No
kkkk
= Address Here + 1
Q4
Q4
Write to W
operation
; W contains table
; offset value
; W now has table value
;W = offset
;Begin table
;
; End of table
register
No
kkkk
1997 Microchip Technology Inc.