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Re: [N8VEM-S100:6760] Re: CCS 2810 CPU Rom
The TMS2716 is not the same, it is a three voltage part like the 2708.
The Texas Instrument equivalent of the other 2716 parts is the TMS2516
Most 2716's that aren't marked for speed are actually 450ns parts.
The NS27C16 is also a 25v VPP part.
Also several recent programmers that claim to program 2716's seem to use
a VPP of 21v rather than 25v and won't program well (or at all) - or
can't supply the 30ma required for 25vpp. You could always consider
On 4/17/2015 12:05 PM, nbreeden wrote:
Do a search on the web for the particular part; most earlier 2716s
program with VPP=25V 50ms.
I'm pretty sure a TMS2716 will program with the same settings as the
You will see later 2716's that programmed at VPP=21V, and later ones
that programmed at VPP=12V; in my experience the VPP=12V ones have an
indication on the package like 'VPP=12'
You also need to be concerned with speed; a 400ns part such as the
early Intel 2716 were 400ns and didn't have a speed indicated in the
markings. -35 tends to be 350ns, -20 200ns etc.
There are also CMOS variants of EPROMs am NS2716 is an NMOS part; the
NS27C16 is the CMOS equivalent; be careful if you go looking for
datasheets as there can be programming differences between.
I have a ton of TMS2716s, NS2716s, STG, Intel etc. Overall they are
all pretty interchangeable for programming.