PIC18F43K20-E/MV Microchip Technology, PIC18F43K20-E/MV Datasheet - Page 346
![8KB, Flash, 768bytes-RAM, 36I/O, 8-bit Family,nanowatt XLP 40 UQFN 5x5x0.5mm TUB](/photos/16/15/161538/qfn-40_sml.jpg)
PIC18F43K20-E/MV
Manufacturer Part Number
PIC18F43K20-E/MV
Description
8KB, Flash, 768bytes-RAM, 36I/O, 8-bit Family,nanowatt XLP 40 UQFN 5x5x0.5mm TUB
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheet
1.PIC18F25K20T-ISS.pdf
(456 pages)
Specifications of PIC18F43K20-E/MV
Processor Series
PIC18
Core
PIC18F
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
8 KB
Data Ram Size
512 B
Interface Type
I2C, SPI, SCI, USB, MSSP, RJ11
Maximum Clock Frequency
64 MHz
Number Of Programmable I/os
35
Number Of Timers
4
Operating Supply Voltage
1.8 V to 3.6 V
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Package / Case
UQFN-40
Development Tools By Supplier
MPLAB Integrated Development Environment
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 125 C
Supply Current (max)
30 uA
Core Processor
PIC
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
35
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 14x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Lead Free Status / Rohs Status
Details
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PIC18F2XK20/4XK20
RETFIE
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
DS41303G-page 346
Q Cycle Activity:
After Interrupt
operation
Decode
PC
W
BSR
Status
GIE/GIEH, PEIE/GIEL
Q1
No
operation
operation
Return from Interrupt
RETFIE {s}
s [0,1]
(TOS) PC,
1 GIE/GIEH or PEIE/GIEL,
if s = 1
(WS) W,
(STATUSS) Status,
(BSRS) BSR,
PCLATU, PCLATH are unchanged.
GIE/GIEH, PEIE/GIEL.
Return from interrupt. Stack is popped
and Top-of-Stack (TOS) is loaded into
the PC. Interrupts are enabled by
setting either the high or low priority
global interrupt enable bit. If ‘s’ = 1, the
contents of the shadow registers, WS,
STATUSS and BSRS, are loaded into
their corresponding registers, W,
Status and BSR. If ‘s’ = 0, no update of
these registers occurs (default).
1
2
RETFIE
0000
Q2
No
No
1
0000
operation
operation
=
=
=
=
=
Q3
No
No
TOS
WS
BSRS
STATUSS
1
0001
Set GIEH or
from stack
operation
POP PC
GIEL
Q4
No
000s
RETLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
TABLE
Q Cycle Activity:
:
:
:
CALL TABLE ; W contains table
ADDWF PCL
RETLW k0
RETLW k1
RETLW kn
Before Instruction
After Instruction
operation
Decode
W
W
Q1
No
; offset value
; W now has
; table value
; W = offset
; Begin table
;
; End of table
=
=
operation
Return literal to W
RETLW k
0 k 255
k W,
(TOS) PC,
PCLATU, PCLATH are unchanged
None
W is loaded with the eight-bit literal ‘k’.
The program counter is loaded from the
top of the stack (the return address).
The high address latch (PCLATH)
remains unchanged.
1
2
literal ‘k’
Read
0000
Q2
No
07h
value of kn
2010 Microchip Technology Inc.
1100
operation
Process
Data
Q3
No
kkkk
from stack,
Write to W
operation
POP PC
Q4
No
kkkk
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