Need some help with power up some old chips \ VOGONS

Need some help with power up some old chips

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First post, by jurekp

Posted on 2020-12-21, 10:57

jurekp Offline

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Hi, I need some help to power up some old chips. I would like to use them in a different projects but first I need to make the chips work and identify their pins function.
Here is the list - if you know some of them I would appreciate your help.

N341256P-20 - 256K BIT CMOS SRAM
HM6818P - REAL TIME CLOCK PLUS RAM
HD146818P - REAL TIME CLOCK PLUS RAM
MN41256A-08 - 262,144 BIT NMOS DYNAMIC RAM
D8259AC-2 - PROG. INTERRUPT CONTROLLER
KM41464AP-15 - 64K X 4 BIT DYNAMIC RAM WITH PAGE MODE
KM4164-15 - 64K X 1 BIT DYNAMIC RAM WITH PAGE MODE
W2465AK-15 - 8K HI SPEED CMOS STATIC RAM
W24257AK-15 - 32K HI SPEED CMOS STATIC RAM
DS0025CN - TWO PHASE MOS CLOCK DRIVER

Thanks in advance Jurek

Reply 1 of 4, by keropi

Posted on 2020-12-21, 11:30

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go to this site and search for the part numbers, everything you listed has datasheets there: https://datasheetspdf.com/datasheet/search.php?sWord=W24257

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Reply 2 of 4, by jurekp

Posted on 2020-12-21, 11:34

jurekp Offline

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keropi wrote on 2020-12-21, 11:30:

go to this site and search for the part numbers, everything you listed has datasheets there: https://datasheetspdf.com/datasheet/search.php?sWord=W24257

I know that site, thanks. I need some more detailed help eg. what pins should be LOW either HIGH to test the chip.

Reply 3 of 4, by computerguy08

Posted on 2020-12-21, 15:27

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jurekp wrote on 2020-12-21, 10:57:

Hi, I need some help to power up some old chips. I would like to use them in a different projects but first I need to make the chips work and identify their pins function.

The easiest method to test them is to use a motherboard from that era. Chips like the 6818 can be tested in compact 286/386sx boards for example.

Reply 4 of 4, by jurekp

Posted on 2020-12-21, 15:49

jurekp Offline

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computerguy08 wrote on 2020-12-21, 15:27:

jurekp wrote on 2020-12-21, 10:57:

Hi, I need some help to power up some old chips. I would like to use them in a different projects but first I need to make the chips work and identify their pins function.

The easiest method to test them is to use a motherboard from that era. Chips like the 6818 can be tested in compact 286/386sx boards for example.

Very usefull info. Thanks.

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