參數(shù)資料
型號: PIC18F25J10T-I/SO
廠商: Microchip Technology
文件頁數(shù): 11/80頁
文件大?。?/td> 0K
描述: IC PIC MCU FLASH 16KX16 28SOIC
產(chǎn)品培訓模塊: Asynchronous Stimulus
PIC18 J Series MCU Overview
標準包裝: 1
系列: PIC® 18F
核心處理器: PIC
芯體尺寸: 8-位
速度: 40MHz
連通性: I²C,SPI,UART/USART
外圍設備: 欠壓檢測/復位,POR,PWM,WDT
輸入/輸出數(shù): 21
程序存儲器容量: 32KB(16K x 16)
程序存儲器類型: 閃存
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 10x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 28-SOIC(0.295",7.50mm 寬)
包裝: 剪切帶 (CT)
配用: AC162074-ND - HEADER INTRFC MPLAB ICD2 44TQFP
MA180011-ND - MODULE PLUG-IN 18F25J10 28SOIC
AC162067-ND - HEADER INTRFC MPLAB ICD2 40/28P
AC164331-ND - MODULE SKT FOR 28SSOP 18F45J10
其它名稱: PIC18F25J10T-I/SOCT
PIC16F8X
1998 Microchip Technology Inc.
DS30430C-page 19
4.5
Indirect Addressing; INDF and FSR
Registers
The INDF register is not a physical register. Address-
ing INDF actually addresses the register whose
address is contained in the FSR register (FSR is a
pointer). This is indirect addressing.
EXAMPLE 4-1:
INDIRECT ADDRESSING
Register file 05 contains the value 10h
Register file 06 contains the value 0Ah
Load the value 05 into the FSR register
A read of the INDF register will return the value of
10h
Increment the value of the FSR register by one
(FSR = 06)
A read of the INDF register now will return the
value of 0Ah.
Reading INDF itself indirectly (FSR = 0) will produce
00h. Writing to the INDF register indirectly results in a
no-operation (although STATUS bits may be affected).
A simple program to clear RAM locations 20h-2Fh
using indirect addressing is shown in Example 4-2.
EXAMPLE 4-2:
HOW TO CLEAR RAM
USING INDIRECT
ADDRESSING
movlw
0x20
;initialize pointer
movwf
FSR
;
to RAM
NEXT
clrf
INDF
;clear INDF register
incf
FSR
;inc pointer
btfss
FSR,4 ;all done?
goto
NEXT
;NO, clear next
CONTINUE
:
;YES, continue
An effective 9-bit address is obtained by concatenating
the 8-bit FSR register and the IRP bit (STATUS<7>), as
shown in Figure 4-1. However, IRP is not used in the
PIC16F8X.
FIGURE 4-1:
DIRECT/INDIRECT ADDRESSING
Direct Addressing
RP1 RP0
6
from opcode
0
IRP
7
(FSR)
0
Indirect Addressing
bank select
location select
bank select
location select
00
01
10
11
00h
7Fh
00h
0Bh
0Ch
2Fh (1)
30h (1)
7Fh
not used
Bank 0
Bank 1
Bank 2
Bank 3
Note 1:
PIC16F83 and PIC16CR83 devices.
2:
PIC16F84 and PIC16CR84 devices
3:
For memory map detail see Figure 4-1.
4Fh (2)
50h (2)
Addresses
map back
to Bank 0
Data
Memory (3)
not used
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PIC18F25J11-I/SO 功能描述:8位微控制器 -MCU 32KB Flash 4KBRAM 12MIPS nanoWatt RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT
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