LPD8806 Datasheet (Yes I know its Chinese :) )

[OzAdr1an]

Hi there
I purchased the http://www.adafruit.com/products/306 and was just wondering if I could get a copy of the Chinese LPD8806 Datasheet. I have a friend who said they can translate it for me - and I will of course offer back anything that ends up making sense Lol

Thanks very much!

[adafruit]

There is nothing of use in the 'Chinese datasheet', the real datasheet with timing information is not available

[CraigKC]

As said, if you're looking for the timing information the Chinese datasheet doesn't contain it outside of specifying a max clock of 20mhz. In addition to the adafruit supplied bitbang library check out the forums here for faster direct port versions by myself and the even faster hardware SPI version by cjbarr (my recommendation) if you're trying to learn a bit more about driving these. If there are additional high level PWM functions like the WS2801s then they haven't been discovered yet.

If in case you're looking for pins, min/max values, physical size, etc of the IC specifically I attached the document for you. Most of that is actually readable in English values.

[sparr]

I have a friend who said they can translate it for me - and I will of course offer back anything that ends up making sense

Please do! There is surely some useful information in that data sheet, even if it doesn't have protocol information.

[wolfstarz]

Well I can after playing a bit tell you the Sequence is:

Data out
Low bit first
7 bit shading data per color. the upper bit must be a "1" on all data transfers
24 bit block per LED, "first to last, GREEN, RED, and BLUE"
upon finishing the last data byte an additional (3) bytes or 24 bits of "0" must be transmitted as a latching kinda thingy.

DATA Steam = G0 / G1 / G2 / G3 / G4 / G5 / G6 / "1" / R0 / R1 / R2 / R3 / R4 / R5 / R6 / "1" / B0 / B1 / B2 / B3 / B4 / B5 / B6 / "1"
repeat once each for as many LEDS that you have. 32LEDs = 32 times
then (3) bytes of nothing ( zero) "0"

All of this was done on a Chipino board, running PBP3.
works great and very fast.

Hope this helps someone!

[mtbf0]

Low bit first

no, msb first. check the example code.

then (3) bytes of nothing ( zero) "0"

actually a single zero bit will cause the latching process to begin. it is probably best to send multiple bytes in order to let the latch propagate all the way down the strip, because if you start sending data again before it's done things wind up in peculiar states. i usually send one zero byte, then try to find something else to do while it's latching.

[wolfstarz]

Oopppps

you are correct, in PBP3 the command is a 1 or 0 for reversing flow.

" Shiftout SO, SCK, 1, [green, red, blue]"

It's a "1" MSB first. Thanks

did try only 1 , worked and sometimes not, 3 works everytime.

[Solarbotics]

Yay for cooperative suppliers! Just got this datasheet translate. As already stated, not entirely a 100% solution, but at least what available is now in English.

Grab a copy over here.