PIC16F684-E/P Microchip Technology, PIC16F684-E/P Datasheet - Page 119

• Manufacturer Part Number: PIC16F684-E/P
• Description: IC PIC MCU FLASH 2KX14 14DIP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F684-E/P

• Program Memory Type: FLASH
• Program Memory Size: 3.5KB (2K x 14)
• Package / Case: 14-DIP (0.300", 7.62mm)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 12
• Eeprom Size: 256 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 3
• 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: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, DM163014, DM164120-4
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: DM163029 - BOARD PICDEM FOR MECHATRONICSACICE0207 - MPLABICE 14P 300 MIL ADAPTER
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

RETFIE
Syntax:
Operands:
Operation:
Status Affected:
Description:
Words:
Cycles:
Example
RETLW
Syntax:
Operands:
Operation:
Status Affected:
Description:
Words:
Cycles:
Example
TABLE
 2004 Microchip Technology Inc.
Return from Interrupt
[ label ]
None
TOS
1
None
Return from Interrupt. Stack is
POPed and Top-of-Stack (TOS) is
loaded in the PC. Interrupts are
enabled by setting Global
Interrupt Enable bit, GIE
(INTCON<7>). This is a two-cycle
instruction.
1
2
After Interrupt
Return with literal in W
[ label ]
0
k
TOS
None
The W register is loaded with the
eight bit literal ‘k’. The program
counter is loaded from the top of
the stack (the return address).
This is a two-cycle instruction.
1
2
CALL TABLE;W contains
table
•
•
•
ADDWF PC
RETLW k1
RETLW k2
•
•
•
RETLW kn
Before Instruction
After Instruction
RETFIE
k
(W);
GIE
255
;offset value
PC,
PC
;W now has table value
PC =
GIE =
W
W
RETFIE
RETLW k
; End of table
;
;Begin table
=
=
;W = offset
TOS
1
0x07
value of k8
Preliminary
RETURN
Syntax:
Operands:
Operation:
Status Affected:
Description:
RLF
Syntax:
Operands:
Operation:
Status Affected:
Description:
Words:
Cycles:
Example
Return from Subroutine
[ label ]
None
TOS
None
Return from subroutine. The stack
is POPed and the top of the stack
(TOS) is loaded into the program
counter. This is a two-cycle
instruction.
Rotate Left f through Carry
[ label ]
0
d
See description below
C
The contents of register ‘f’ are
rotated one bit to the left through
the Carry flag. If ‘d’ is ‘0’, the
result is placed in the W register.
If ‘d’ is ‘1’, the result is stored
back in register ‘f’.
1
1
Before Instruction
After Instruction
RLF
f
[0,1]
PIC16F684
PC
127
C
RETURN
REG1
C
REG1
W
C
RLF
REG1,0
DS41202C-page 117
Register f
f,d
=
=
=
=
=
1110 0110
0
1110 0110
1100 1100
1