From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
To: Libre-RISCV General Development <libre-riscv-dev@lists.libre-riscv.org>
Subject: Re: [libre-riscv-dev] Pinout, interfaces, Rudi, and Raptor
Date: Sat, 9 May 2020 11:02:13 +0100
Message-ID: <CAPweEDzuf02Xp58_q+OkgYft8NyTKnNtD0xqKdr3=9=uBxLgWg@mail.gmail.com> (raw)
In-Reply-To: <792ac37b0c72350337f07c758d51a24eaa9ac532.camel@fibraservi.eu>
On Sat, May 9, 2020 at 10:12 AM Staf Verhaegen <staf@fibraservi.eu> wrote:
> You refer to a first SBC preferably low-cost. The October prototype tape-out will not be cost-effective for that. It is a multi-project wafer.
i explained this to Yehowshua, however it was off-list during a very
rapid conversation with Tim from Raptor CS - thank you for putting
this on-list.
> You can order extra wafers but it does mean that the cost of that wafer is divided over much less devices; meaning the cost will be around $32 per chip and some of them will not be functional; in microelectrics you never have 100% yield. Also I think there is limit on only be able to get at most 1000 chips this way.
(in lower geometries on MPW Programmes, 30% yield is good going).
l.
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Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-08 14:20 Yehowshua
2020-05-08 15:03 ` Luke Kenneth Casson Leighton
2020-05-09 9:12 ` Staf Verhaegen
2020-05-09 10:02 ` Luke Kenneth Casson Leighton [this message]
2020-05-09 14:39 ` Yehowshua
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