[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [N8VEM-S100:3405] Re: Help searching a component (AM8224-4DC)
- To: n8vem-s100@googlegroups.com
- Subject: Re: [N8VEM-S100:3405] Re: Help searching a component (AM8224-4DC)
- From: Fabio Battaglia <hkzl...@gmail.com>
- Date: Wed, 30 Apr 2014 21:13:53 +0200
- Authentication-results: gmr-mx.google.com; spf=pass (google.com: domain of hkzl...@gmail.com designates 2a00:1450:4013:c00::22a as permitted sender) smtp.mail=hkzl...@gmail.com; dkim=pass head...@gmail.com; dmarc=pass (p=NONE dis=NONE) header.from=gmail.com
- Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=x7rnLA5V97fhKUsXdw8a9Am5A8w5UjUGYgqSF/b2NQg=; b=InZCCyFktBoE2oUgsIY/Cw3z2iJIN2ES1TcKR+Coq2NKAokQ5FzWPbxQfiH4DxPCQL G1HWfLqDiq/sAGtCLXtl/0S4IJ0ZcJfe0HvgxxtG6qmntPaWmY6jFv3mcvbEIiv73smy ui3iZgbbpdaFs1f/fCeGMz9LNThKZ3z5y7zOjC2131romasfA2x4sPsayV+VmYcXD362 5ZKwxH56DKXLVFslZKodUJkMP23NTYYlvC8IJS+14XRjvyGyexcMyVyrAOZxw533OsC+ 4aP9uwGoGkLP98mcFeFPS2oxqr3HYyEiSUzx2oOYHM6Hf2DLxbScnAWWIUi8K0I5Vzyv uMIg==
- In-reply-to: <6e386320-7ee0-4aee-a672-736153b9bbe2@googlegroups.com>
- References: <0ea60635-3f97-4a6b-8197-4dbcd79975c4@googlegroups.com> <6e386320-7ee0-4aee-a672-736153b9bbe2@googlegroups.com>
- User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.4.0
On 30/04/14 20:53, David Fry wrote:
> Fabio
>
> just checked the Texas Instruments datasheet for the standard 8224 and
> the max frequency is specified as 27Mhz, this should get you to 3Mhz CPU
> if you cant find the faster version.
> Start with a slower clock speed first to get things working then bring
> the speed up.
>
> regards
>
> David Fry
Hi David,
Yep, most (all?) 8224 clones have a max freq. of 27Mhz, except the
elusive 8224-4, which has a max of 36. I actually have a few 18Mhz
crystals around, I'm only annoyed by the fact that changing the freq is
not only a matter of changing the crystal, but also a few caps and
resistors, which makes testing slightly troublesome.
I'll surely resort to going down to 2Mhz if I run out of ideas
troubleshooting this board, I'm just not in a big hurry with this one.
Thanks,
Fabio