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标题: New Logic Test - 74188 Vector Table [打印本页]

作者: yovish    时间: 2021-12-25 03:02     标题: New Logic Test - 74188 Vector Table

Enclosed is the new layout to be added to the logic tests.
The test was performed on the K155RE3 (256-bit, 32x8bit words PROM, open-collector outputs, analogue SN74188N) chip from IC/Microchip USSR (now Russia).


This IC is a PROM (Programmable Read Only Memory), so general testing only makes sense for a blank/clean, non-programmed chip. Because after programming, each chip can have different contents.


In the unprogrammed state, a low voltage is generated at all outputs of the 74188 microchip (74S188).

图片附件: 74188 (Blank) - Logic Vector.jpg (2021-12-25 02:59, 510.56 KB) / 下载次数 401
http://forums.xgecu.com/attachment.php?aid=1112&k=17a32f93c61ae171e5c036f0d8255570&t=1670188088&sid=lvlSTl



图片附件: 74188 (Blank) - Logic Test.jpg (2021-12-25 03:00, 327.84 KB) / 下载次数 381
http://forums.xgecu.com/attachment.php?aid=1113&k=2b1fc606717d016e180abece0dafb7f3&t=1670188088&sid=lvlSTl



图片附件: K155RE3 (SN74188N).jpg (2021-12-25 03:00, 589.09 KB) / 下载次数 389
http://forums.xgecu.com/attachment.php?aid=1114&k=2d35b620c103d14a095f6534aa6b1434&t=1670188088&sid=lvlSTl



附件: TI 54-54S-74-74S Programmable Read-Only Memories.pdf (2021-12-25 03:01, 366.25 KB) / 下载次数 308
http://forums.xgecu.com/attachment.php?aid=1115&k=2c39444ffbb27546bbededcb9a967ffb&t=1670188088&sid=lvlSTl

附件: DM74S188-NationalSemiconductor.pdf (2021-12-25 03:01, 119.89 KB) / 下载次数 309
http://forums.xgecu.com/attachment.php?aid=1116&k=91040c5953630c2a940c88bd1a2f44cf&t=1670188088&sid=lvlSTl

附件: 74188 (Blank).lgc (2021-12-25 03:01, 2.83 KB) / 下载次数 392
http://forums.xgecu.com/attachment.php?aid=1117&k=03c9b38e19fdcc839d94337c477494c0&t=1670188088&sid=lvlSTl
作者: Victor87    时间: 2022-11-7 02:46

Testing for a blank/clean PROM К556РТ4 (82S126) (256x4) bits
82S126.lgc (8.06 KB)


附件: 82S126.lgc (2022-11-7 02:45, 8.06 KB) / 下载次数 15
http://forums.xgecu.com/attachment.php?aid=1541&k=d0546c00e7342edfebd695c04466daec&t=1670188088&sid=lvlSTl




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