Device 23c1000

[JonT]

I know its a long shot but is there any chance of getting a 23c1000 maskrom added to the device list?
I very frequently have to verify these are still working and at present I am resorting to reading them as 27c512 devices, toggling the highest address line and re-reading them.
The device is very similar to the 27c301 device but obviously doesnt have the programming pins.

No problem if not, im probably the only person who wants this but it would save me heaps of hassle.

Thanks
Jon

[Dataman (Neil Parker)]

Hello JonT,

Is 23c1000 the complete partname? Who is the manufacturer? Do you have a datasheet for this part? What is the package type?

Once we have this information we can carry out an preliminary analysis of the device requirements... .

Regards
Neil Parker
Dataman Programmers

[JonT]

hi,
The 23c1000 was a maskrom made by NEC, it seems to be very common in some of the older arcade PCB's
Its complete name taken from the ROM is D23C1000AC and is a DIP package
The pinout is as follows:

A15.|1..........28|.VCC
A12.|2..........27|.A14
A7.|3...........26|.A13
A6.|4...........25|.A8
A5.|5...........24|.A9
A4.|6...........23|.A11
A3.|7...........22|.A16
A2.|8...........21|.A10
A1.|9...........20|./CE
A0.|10..........19|.D7
D0.|11..........18|.D6
D1.|12..........17|.D5
D2.|13..........16|.D4
GND.|14........15|.D3

As you can see its pin compatible with a 27c301 but with an the extra /OE and programming lines removed.

Hope you can help.

Thanks
Jon

[Dataman (Neil Parker)]

Hello JonT,

Ok, we have completed an initial analysis of the device requirements and we are able to add support (in this case read + verify operations) for the uPD23C1000A device. The Datasheet for the uPD23C1000A is available.

A sample chip is required for final testing of the algorithm. Are you able to provide this?

Regards
Neil Parker
Dataman Programmers

[JonT]

I know for sure I've got one on my working boards, are you able to return it? I'll also take a look on some scrap ones for any then I wouldn't need it returned.

[Dataman (Neil Parker)]

JonT

We could return the sample to you if required.

Please send it to the following address marked for my attention:

Dataman Programmers Ltd
Attn: Neil Parker
Station Road
Maiden Newton
Dorset
DT2 0AE
UK

Please use my name and the following contact number for shipping: 01300 320719

As soon as we have implemented the support I will post here with a link to the latest software.

Best regards,

Neil Parker
Dataman Programmers

[JonT]

nice one, ill post it off tomorrow evening first class recorded

[JonT]

item has been sent and hopefully its in your hands now.
thanks

[Dataman (Neil Parker)]

JonT,

The device is with our engineers in the lab. As soon as I hear anything I will let you know.

Regards
Neil Parker
Dataman Programmers

[Dataman (Neil Parker)]

Hello JonT,

I am pleased to inform you that support of the NEC uPD23C1000A has been released.

Please download, install and use the latest OnDemand software:
URL: http://www.dataman.com/downloads/dl/fil ... ftware.zip
Version: 2.86d/02.2012

Best regards,

Neil Parker
Dataman Programmers