PIC16F636-I/ST Microchip Technology, PIC16F636-I/ST Datasheet - Page 139

• Manufacturer Part Number: PIC16F636-I/ST
• Description: IC MCU FLASH 2KX14 14TSSOP
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F636-I/ST

• Program Memory Type: FLASH
• Program Memory Size: 3.5KB (2K x 14)
• Package / Case: 14-TSSOP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Peripherals: Brown-out Detect/Reset, LVD, POR, WDT
• Number Of I /o: 11
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC16F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: RS- 232/SPI/USB
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 12
• Number Of Timers: 2
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8 bit
• Package: 14TSSOP
• Device Core: PIC
• Family Name: PIC16
• Maximum Speed: 20 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC162057 - MPLAB ICD 2 HEADER 14DIP
• Eeprom Size: -
• Data Converters: -
• Connectivity: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

RETFIE
Syntax:
Operands:
Operation:
Status Affected: None
Encoding:
Description:
Words:
Cycles:
Example:
RETLW
Syntax:
Operands:
Operation:
Status Affected: None
Encoding:
Description:
Words:
Cycles:
Example:
TABLE
© 2005 Microchip Technology Inc.
Return with Literal in W
[ label ]
0
k
TOS
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
Return from Interrupt
[ label ]
None
TOS
1
Return from interrupt. Stack is POPed
and Top-of-Stack (TOS) is loaded in
the PC. Interrupts are enabled by
setting the Global Interrupt Enable bit,
GIE (INTCON<7>). This is a
two-cycle instruction.
1
2
After Interrupt
RETFIE
k
11
00
(W);
GIE
255
PC
PC,
W
W
RETLW k
PC =
GIE =
RETFIE
;offset value
;W now has table value
;W = offset
;Begin table
;
; End of table
01xx
0000
=
=
0x07
value of k8
TOS
1
kkkk
0000
1001
kkkk
PIC12F635/PIC16F636/639
Preliminary
RETURN
Syntax:
Operands:
Operation:
Status Affected:
Description:
RLF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
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
00
RLF
f
[0,1]
PC
127
C
RETURN
REG1
C
REG1
W
C
RLF
1101
REG1,0
DS41232B-page 137
Register f
f,d
=
=
=
=
=
dfff
1110 0110
0
1110 0110
1100 1100
1
ffff