megacode
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
megacode [2014/12/28 17:56] – [318LIPW1K] kingkevin | megacode [2014/12/28 19:47] – [protocol] kingkevin | ||
---|---|---|---|
Line 45: | Line 45: | ||
In [[https:// | In [[https:// | ||
+ | |||
+ | ==== MDR ==== | ||
+ | |||
+ | The main target is the [[http:// | ||
+ | |||
+ | * [[http:// | ||
+ | * [[http:// | ||
+ | |||
+ | internal pictures: | ||
+ | |||
+ | {{: | ||
+ | {{: | ||
+ | {{: | ||
+ | {{: | ||
+ | {{: | ||
+ | {{: | ||
+ | |||
+ | It uses a [[https:// | ||
+ | The PICkit2 programmer does not support the PIC16C family because it's EPROM based and requires higher voltage. | ||
+ | But code protection is probably used. | ||
+ | This chip can also come as One Time Programmable, | ||
+ | |||
+ | ==== MDR-U ==== | ||
+ | |||
+ | The main target is the [[http:// | ||
+ | |||
+ | * [[http:// | ||
+ | * [[http:// | ||
+ | |||
+ | internal pictures: | ||
+ | |||
+ | {{: | ||
+ | {{: | ||
+ | {{: | ||
+ | {{: | ||
+ | {{: | ||
+ | {{: | ||
+ | |||
+ | It uses a [[https:// | ||
+ | The PICkit2 programmer does not support the PIC16C family because it's EPROM based and requires higher voltage. | ||
+ | But code protection is probably used. | ||
+ | This chip can also come as One Time Programmable, | ||
+ | |||
+ | ===== protocol ===== | ||
+ | |||
+ | The MegaCode protocol is partially specified in the [[https:// | ||
+ | |||
+ | It uses Amplitude Modulation (AM) on 318MHz. | ||
+ | There are two levels: on and off. | ||
+ | The transmission uses 24 bit frames and 1 blank cell. | ||
+ | Each is 6 ms long. | ||
+ | Within each bit frame a 1 ms pulse is send. | ||
+ | The pulse is either in the first or second half within the bit frame (after 2 or 5 ms). | ||
+ | This defines if the bit is a 0 or 1. | ||
+ | The first bit frame is used as sync frame and is always a 1. | ||
+ | It is followed by 20 system code bits and 3 data bits. |
megacode.txt · Last modified: 2024/01/07 17:49 by 127.0.0.1