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Hi to All
I see that here many people work with SED1335F(S1D13305F00A). Any body succeed to work in text mode with 16x16 bit characters(external CG)? I am curious is it possible or not with this controller? The datasheet is not clear enougth about this.

Thanks for the time.

The datasheet says you can go up to 16x16, but it looks like you have to create characters in 2 parts or something like that, not sure.

But you can create 8x16, I'm still trying to figure that part out myself. The datasheet is vague in that regards; the info is there, it's just not written big enough for me. An application note on the steps to create custom characters would have been nice.

At least I got the 8x8 default font coming out.

Robert

Sorry for the late reply.
Yes I have use SED1335 with 16x16 characters. But I have to make a special set of custom characters. I load it as external font in the SED1335 memory. The trick is that I write every character in two halves. The first halves of every character are symbols 0 through 127 in my custom character set and the second halves are symbols 128 trough 255. The controller is initialized in 8x16 mode. So when I need a 16x16 I put
Write('A');
Write(0x80 | 'A');
There is one more workaround - to write the characters in graphic mode(I didn't try this).
Finaly I decide not to use 16x16 characters so I have stopped at this point.
But I am still curious if this is possible in the "normal" way.

I got a 16x8 portrait font working, I did like you. I load the font from an external EEPROM at PIC startup into the LCD internal memory. In order to get more characters, I subtracted 32 from all characters so that I start at 0 for SPACES.

So I save the top 1/2 of the character at its proper address, and then add 128 to the address and save the bottom 1/2 there. It takes 2 writes for a single character, but my application does not need excessively rapid IO.

I still have some touch-ups to do on the lower-case characters.

Robert