Electronic Components Datasheet Search |
|
ATAR862N3 Datasheet(PDF) 2 Page - ATMEL Corporation |
|
ATAR862N3 Datasheet(HTML) 2 Page - ATMEL Corporation |
2 / 3 page 2 MARC4 4-bit Microcontrollers Errata Sheet 4813A–4BMCU–06/04 Workaround MTP Parts a) Experienced customers using Atmel MTP parts (ATAM893S, ATAM894P) can modify the HEX-file directly. Within each interrupt service routine, replace the HEX-code for CCR! in front of the RTI with a SCALL to a free address. Introduce the HEX-codes for the commands LIT_1, OR, CCR! and EXIT at this address. Now, with each RTI, the interrupt enable flag is set. This software modification overrides the last hardware modification, i.e., the parts behave as if not having received DI-enhancement, and the interrupt active register will be cleared correctly. b1) An equivalent modification can be done in the source code, but the modification depends on the content the compiler saved at the beginning of an interrupt service routine: 0080 : INT1 0080 0D CCR@ \$SAVEREG 0081 73 Y@ 0082 72 X@ In this case, CCR, X and Y registers were saved, therefore, the modification should look as follows: 2>R 2>R 1 or 2R> 2R> either at the beginning or at the end of the interrupt service routine. b2) If only CCR and one of the registers were saved: 01E0 :INT7 01E0 0D CCR@ \$SAVEREG 01E1 73 Y@ The modification looks as follows: ROT 1 or <ROT c) Customers using MTP parts may switch their order to the predecessor version. ROM Parts Customers using ROM parts may switch their order to the predecessor version. Up to now it has not occurred, that parts working correctly under all conditions might fail in the future or under different environmental conditions. |
Similar Part No. - ATAR862N3 |
|
Similar Description - ATAR862N3 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | 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 |