DIY编程器网

 找回密码
 注册

QQ登录

只需一步,快速开始

扫一扫,访问微社区

查看: 4395|回复: 3
打印 上一主题 下一主题

AVR JTAG adapter

[复制链接]
跳转到指定楼层
楼主
发表于 2011-10-29 13:23:20 | 只看该作者 |只看大图 回帖奖励 |倒序浏览 |阅读模式
This is a modified version of the IsoJtagISP JTAGICE I clone by Andrew Leech. I added some additional buffering as well as some reversed polarity and input protection.
Note:
I never completely tested this design, while it was recognized by AVR Studio and did work I had some reliability problems. But these may have just as easily been caused by bad cables. Since I have an official JTAGICE mkII now I never used this device much. But it is pretty much the same as the original so it probably should work correctly.
Schematic
Note:
IC3D needs a pull-up (10k or something) on its enable input (pin 13) which is missing in the schematic.
PCB
I had the PCB made profesionally, also to get some experience with that. They turned out pretty well:


Soldered
The finished adapter:


As said earlier, a pull-up resistor was missing. I fixed this by soldering a 0603 10k resistor between pin 13 (enable of one of the buffers) and pin 14 (VCC) of the buffer IC:

Download
Here you can download the Eagle, Gerber and schematic files of the project. Credits for the original design go to Andrew Leech. You can freely use these files for non-commercial use.
jtagice.zip (213.66 KB, 下载次数: 10)

分享到:  QQ好友和群QQ好友和群 QQ空间QQ空间 腾讯微博腾讯微博 腾讯朋友腾讯朋友 微信微信
收藏收藏 分享分享 支持支持 反对反对
沙发
发表于 2011-10-29 19:04:24 | 只看该作者
看看
好东西!
板凳
 楼主| 发表于 2011-10-29 19:10:32 | 只看该作者
越来越多,到时候会不知道做哪个
地板
发表于 2020-8-25 20:13:38 | 只看该作者
到时候会不知道做哪个
您需要登录后才可以回帖 登录 | 注册

本版积分规则

小黑屋|文字版|手机版|DIY编程器网 ( 桂ICP备14005565号-1 )

GMT+8, 2024-12-26 01:42 , 耗时 0.091622 秒, 24 个查询请求 , Gzip 开启.

各位嘉宾言论仅代表个人观点,非属DIY编程器网立场。

桂公网安备 45031202000115号

DIY编程器群(超员):41210778 DIY编程器

DIY编程器群1(满员):3044634 DIY编程器1

diy编程器群2:551025008 diy编程器群2

QQ:28000622;Email:libyoufer@sina.com

本站由桂林市临桂区技兴电子商务经营部独家赞助。旨在技术交流,请自觉遵守国家法律法规,一旦发现将做封号删号处理。

快速回复 返回顶部 返回列表