[Techtoolslist] RASTER: M2716A-2F1 datasheet

[John Robertson]

Matthew Rossiter wrote:

> So, in continuing this discussion on techtoolslist - I found that I 

> was only about to program a couple more 2716a's and the rest failed.  

> Then I realized that sometimes I had to program them two or three 

> times until they finally verified correctly.  Has anyone else run into 

> this issue?

>

> Matt

>

I've had trouble too with these vintage Eproms, 2716s seem to not like 
being re-programmed much.  Fortunately have a hundred or so of pulls so 
I just chuck the duds into a box marked 'erase' to try again later. I 
suspect they are simply failing due to age.......

I'm using a Data I/O 29B with Unipak, as it is my most reliable 
programmer for that vintage of parts, plus I have spare units as 
backups. I have about a dozen programmers all together I guess, going 
right back to the 1702s.

John :-#(#

> On 1/31/2013 10:16 AM, Matthew Rossiter wrote:

>> Oh Boy.  Ok - so these all passed the blank check when they arrived.  

>> But I thought, what the heck I'll run them through the UV eraser just 

>> to make sure they're blank.  Now I can program them.

>>

>> As Gilda Radner would say - Nevermind.

>>

>> Matt

>>

>>

>>

>>

>> On 1/31/2013 9:51 AM, Matthew Rossiter wrote:

>>> Well fortunately, these eproms have 21V written on the top of them 

>>> so it's not hard to miss.  I'm using a Dataman-48Pro+ where they 

>>> give you the specs of a generic 2716A and yes it's set to program at 

>>> 21v.   I'm not sure if there's anything special about STMicro's.  

>>> Normally what I do is try to find the datasheet, send it over to 

>>> Dataman and they usually fix the problem.  But I can't find a 

>>> datasheet anywhere on the net.

>>>

>>> There's also the possibility I have some bad devices.  :|   I only 

>>> did a quick search but I don't think the Data IO 29B does them 

>>> either.   I'll double check.  I'd love to find a datasheet though.

>>>

>>> Matt

>>>

>>> On 1/31/2013 9:27 AM, John Robertson wrote:

>>>> Rodger Boots wrote:

>>>>>

>>>>> BE CAREFUL, 2716s program using 25 volts but what you have uses 21 

>>>>> volts.

>>>>>

>>>>> On Jan 31, 2013 12:16 AM, "Matthew Rossiter" <matt at rossiters.com 

>>>>> <mailto:matt at rossiters.com>> wrote:

>>>>>

>>>>>     Does anyone have the datasheet for the ST Microelectronics eprom

>>>>>     M2716A-2F1?  I bought them from Jameco but I can't seem to 

>>>>> program

>>>>>     them.  They are fast 200ns eproms.

>>>>>

>>>>>     Matt

>>>>>

>>>>

>>>> Programming a 21V 2716A (that is what the "A" means) on a 25V 

>>>> programmer will normally destroy the Eprom. This is also the 

>>>> difference between the 2732 (25V) and 2732A (21V).

>>>>

>>>> If you can't find the exact manufacturer and part number on your 

>>>> list of Eproms that came with your programmer then you MUST find 

>>>> out exactly what the device needs and then determine what Eprom is 

>>>> closest to it so that its algorithm will work before attempting to 

>>>> program it. the devices from the 70s were very particular about 

>>>> voltages and timings, devices from the mid-80s and later usually to 

>>>> have code inside them that the programmer can recognize to figure 

>>>> out the programming voltage(s) required.

>>>>

>>>>

>>>> John :-#(#

>>>> -- 

>>>> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9

>>>> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)

>>>>                   www.flippers.com  "Old pinballers never die, they 

>>>> just flip out"

>>>

>>

>

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