參數(shù)資料
型號: PIC18F45J50-I/PT
廠商: Microchip Technology
文件頁數(shù): 105/164頁
文件大小: 0K
描述: IC PIC MCU FLASH 32K 2V 44-TQFP
產(chǎn)品培訓(xùn)模塊: XLP Deep Sleep Mode
PIC18 J Series MCU Overview
8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝: 160
系列: PIC® XLP™ 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 48MHz
連通性: I²C,SPI,UART/USART,USB
外圍設(shè)備: 欠壓檢測/復(fù)位,DMA,POR,PWM,WDT
輸入/輸出數(shù): 34
程序存儲(chǔ)器容量: 32KB(16K x 16)
程序存儲(chǔ)器類型: 閃存
RAM 容量: 3.8K x 8
電壓 - 電源 (Vcc/Vdd): 2.15 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 13x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-TQFP
包裝: 托盤
產(chǎn)品目錄頁面: 657 (CN2011-ZH PDF)
配用: AC164322-ND - MODULE SOCKET MPLAB PM3 28/44QFN
PIC18F47J13 FAMILY
DS39974A-page 464
Preliminary
2010 Microchip Technology Inc.
RETFIE
Return from Interrupt
Syntax:
RETFIE {s}
Operands:
s
[0,1]
Operation:
(TOS)
PC,
1
GIE/GIEH or PEIE/GIEL;
if s = 1,
(WS)
W,
(STATUSS)
STATUS,
(BSRS)
BSR,
PCLATU, PCLATH are unchanged
Status Affected:
GIE/GIEH, PEIE/GIEL.
Encoding:
0000
0001
000s
Description:
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).
Words:
1
Cycles:
2
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
No
operation
No
operation
POP PC
from stack
Set GIEH or
GIEL
No
operation
No
operation
No
operation
No
operation
Example:
RETFIE
1
After Interrupt
PC
=
TOS
W=
WS
BSR
=
BSRS
STATUS
=
STATUSS
GIE/GIEH, PEIE/GIEL
=
1
RETLW
Return Literal to W
Syntax:
RETLW k
Operands:
0
k 255
Operation:
k
W,
(TOS)
PC,
PCLATU, PCLATH are unchanged
Status Affected:
None
Encoding:
0000
1100
kkkk
Description:
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.
Words:
1
Cycles:
2
Q Cycle Activity:
Q1
Q2
Q3
Q4
Decode
Read
literal ‘k’
Process
Data
POP PC
from stack,
write to W
No
operation
No
operation
No
operation
No
operation
Example:
CALL TABLE ; W contains table
; offset value
; W now has
; table value
:
TABLE
ADDWF PCL
; W = offset
RETLW k0
; Begin table
RETLW k1
;
:
RETLW kn
; End of table
Before Instruction
W
=
07h
After Instruction
W
=
value of kn
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