參數(shù)資料
型號: PIC24FJ48GA004-I/ML
廠商: Microchip Technology
文件頁數(shù): 17/52頁
文件大?。?/td> 0K
描述: IC PIC MCU FLASH 48K 44-QFN
產(chǎn)品培訓模塊: Graphics LCD System and PIC24 Interface
Asynchronous Stimulus
特色產(chǎn)品: PIC24FJ/33FJ MCUs & dsPIC? DSCs
標準包裝: 45
系列: PIC® 24F
核心處理器: PIC
芯體尺寸: 16-位
速度: 32MHz
連通性: I²C,PMP,SPI,UART/USART
外圍設備: 欠壓檢測/復位,LVD,POR,PWM,WDT
輸入/輸出數(shù): 35
程序存儲器容量: 48KB(16K x 24)
程序存儲器類型: 閃存
RAM 容量: 8K x 8
電壓 - 電源 (Vcc/Vdd): 2 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-VQFN 裸露焊盤
包裝: 管件
配用: 876-1004-ND - PIC24 BREAKOUT BOARD
DM240011-ND - KIT STARTER MPLAB FOR PIC24F MCU
AC162088-ND - HEADER MPLAB ICD2 24FJ64GA004 28
AC164336-ND - MODULE SOCKET FOR PM3 28/44QFN
DV164033-ND - KIT START EXPLORER 16 MPLAB ICD2
PIC24FJXXXGA0XX
DS39768D-page 24
2008 Microchip Technology Inc.
3.9
Reading Configuration Words
The procedure for reading configuration memory is
similar to the procedure for reading code memory,
except that 16-bit data words are read (with the upper
byte read being all ‘0’s) instead of 24-bit words. Since
there are two Configuration registers, they are read one
register at a time.
Table 3-9 shows the ICSP programming details for
reading the Configuration Words. Note that the
TBLPAG register must be loaded with 00h for 96 Kbyte
and below devices and 01h for 128 Kbyte devices (the
upper byte address of configuration memory), and the
Read Pointer, W6, is initialized to the lower 16 bits of
the Configuration Word location.
TABLE 3-9:
SERIAL INSTRUCTION EXECUTION FOR READING ALL CONFIGURATION MEMORY
Command
(Binary)
Data
(Hex)
Description
Step 1: Exit Reset vector.
0000
000000
040200
000000
NOP
GOTO
0x200
NOP
Step 2: Initialize TBLPAG, the Read Pointer (W6) and the Write Pointer (W7) for TBLRD instruction.
0000
200xx0
880190
2xxxx7
207847
000000
MOV
<CW2Address23:16>, W0
MOV
W0, TBLPAG
MOV
<CW2Address15:0>, W6
MOV
#VISI, W7
NOP
Step 3: Read the Configuration register and write it to the VISI register (located at 784h), and clock out the
VISI register using the REGOUT command.
0000
0001
0000
BA0BB6
000000
<VISI>
000000
TBLRDL
[W6++], [W7]
NOP
Clock out contents of VISI register
NOP
Step 4: Repeat Step 3 again to read Configuration Word 1.
Step 5: Reset device internal PC.
0000
040200
000000
GOTO
0x200
NOP
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