PIC Vietnam

Go Back   PIC Vietnam > Microchip PIC > English forum on PICs

Tài trợ cho PIC Vietnam
Trang chủ Đăng Kí Hỏi/Ðáp Thành Viên Lịch Bài Trong Ngày Vi điều khiển

English forum on PICs Forum for foreigners -only English in this forum - Do not need to register or login

 
 
Ðiều Chỉnh Xếp Bài
Prev Previous Post   Next Post Next
Old 07-07-2011, 12:37 AM   #1
tetsu-jp
Đệ tử 1 túi
 
tetsu-jp's Avatar
 
Tham gia ngày: May 2011
Nơi Cư Ngụ: nước Đức
Bài gửi: 18
:
saving you costs: 4-digit LED display drive using 16f54

Over the past 5 years I have seen many different ways to drive LED displays.
And I tried some designs myself.

One solution is to use a small microcontroller only for the display,
and clock in data serially!

The 16f54 as TSSOP is a very small IC. And it costs less than the display itself.
No extra parts are needed indeed except for the clock signal generation.
I use a coil here while also a resonator or crystal could be used.

So extra parts count is just one part, plus one resistor but that is not strictly needed.

I share the source code so you can advance too!

However:

1. No ownership or copyright is transfered.
2. The code to read external serial data is not implemented.
You would have to add it yourself.
3. Since it's a small controller with 512 words FLASH, assembly language is used.

Many electronics gadgets these days have a short live cycle just a few years.
After that they end up as e-waste.
There is no need to bury parts which are not absolutely needed.
There is no need to use technology from 10 or 20 years ago.
It's perfectly possible to use SMD "at home".

By the way you could copy and paste the source directly from the PDF for instance using foxit reader.
File Kèm Theo
File Type: pdf 16f54_data.pdf (850.3 KB, 131 lần tải)
tetsu-jp vẫn chưa có mặt trong diễn đàn   Trả Lời Với Trích Dẫn
 


Quyền Sử Dụng Ở Diễn Ðàn
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is Mở
Smilies đang Mở
[IMG] đang Mở
HTML đang Tắt

Chuyển đến


Múi giờ GMT. Hiện tại là 09:30 PM.


Được sáng lập bởi Đoàn Hiệp
Powered by vBulletin®
Page copy protected against web site content infringement by Copyscape
Copyright © PIC Vietnam