 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
PIC24FJ64GA Datasheet(PDF) 24 Page - Microchip Technology |
|
|
|||||||||||||||||||||||||||||
PIC24FJ64GA Datasheet(HTML) 24 Page - Microchip Technology |
|
|
24 / 52 page  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 0000 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 0000 0000 0000 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 0000 0000 0001 0000 BA0BB6 000000 000000 <VISI> 000000 TBLRDL [W6++], [W7] NOP 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 0000 040200 000000 GOTO 0x200 NOP |
|
Link URL |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link to Datasheet | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Indian ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
