{ "guild": { "id": "1361349522684510449", "name": "wafer.space Community", "iconUrl": "2025-11_media/fb143eaa45770cbb40493d09b625e98b-09FD1.png" }, "channel": { "id": "1444137681712971898", "type": "GuildPublicThread", "categoryId": "1409660288822673408", "category": "questions", "name": "DRC error Cap", "topic": null }, "dateRange": { "after": "2025-10-31T23:59:59.999+00:00", "before": "2025-12-01T00:00:00+00:00" }, "exportedAt": "2026-05-11T18:06:10.8746521+00:00", "messages": [ { "id": "1444137681712971898", "type": "Default", "timestamp": "2025-11-29T01:27:34.101+00:00", "timestampEdited": null, "callEndedTimestamp": null, "isPinned": false, "content": "this error does not seem to be solvable. it does not even make sense. if you know the answer, I would appreciate it. It is a DRC error that comes from the cap. apparently it says the bottom plate should be wider than the top ones. and that is what is already there", "author": { "id": "476871702106603546", "name": "enited", "discriminator": "0000", "nickname": "Mehdi", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/4f45e115b1159d0a62a4ab23981074e4-7321A.png" }, "attachments": [ { "id": "1444137681956114503", "url": "2025-11_media/image-17B9D.png", "fileName": "image.png", "fileSizeBytes": 121610 } ], "embeds": [], "stickers": [], "reactions": [], "mentions": [], "inlineEmojis": [] }, { "id": "1444138600454291621", "type": "Default", "timestamp": "2025-11-29T01:31:13.146+00:00", "timestampEdited": null, "callEndedTimestamp": null, "isPinned": false, "content": "@Leo Moser (mole99) / @Tim Edwards - Any idea?", "author": { "id": "169786952432746498", "name": "mithro_", "discriminator": "0000", "nickname": "Tim 'mithro' Ansell", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/9679bb77da48d47c905b398d98a83780-75B68.png" }, "attachments": [], "embeds": [], "stickers": [], "reactions": [], "mentions": [ { "id": "323371864074485771", "name": "mole99", "discriminator": "0000", "nickname": "Leo Moser (mole99)", "color": null, "isBot": false, "roles": [ { "id": "1423020172595298314", "name": "Mod", "color": null, "position": 1 } ], "avatarUrl": "2025-11_media/3c7c17f3225f6e56f4dccd83f14383f2-73F83.png" }, { "id": "1365118310701600900", "name": "rtimothyedwards_19428", "discriminator": "0000", "nickname": "Tim Edwards", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/6bcc8e61db497b620550682309ace5d5-D89B4.png" } ], "inlineEmojis": [] }, { "id": "1444138894986579989", "type": "Default", "timestamp": "2025-11-29T01:32:23.368+00:00", "timestampEdited": "2025-11-29T01:32:56.147+00:00", "callEndedTimestamp": null, "isPinned": false, "content": "more context: that is the cap, between 5 and 6. just being instantiated results in that error", "author": { "id": "733031319222878339", "name": "hateemx", "discriminator": "0000", "nickname": "Hateemx", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/42977590f2eb075d0eb6b48f02566b7e-3B288.png" }, "attachments": [ { "id": "1444138894298710168", "url": "2025-11_media/image-3F8F6.png", "fileName": "image.png", "fileSizeBytes": 3844 } ], "embeds": [], "stickers": [], "reactions": [], "mentions": [], "inlineEmojis": [] }, { "id": "1444152348866773082", "type": "Default", "timestamp": "2025-11-29T02:25:51.023+00:00", "timestampEdited": null, "callEndedTimestamp": null, "isPinned": false, "content": "@Hateemx Here're the relevant rules from the klayout technology. Sorry if the explanation is too long.\n```\n mimtm_virtual = fusetop.sized(1.06.um).and(topmin1_metal.interacting(fusetop))\n...\n # Rule MIMTM.3: Minimum MiM bottom plate overlap of Top plate.\n logger.info('Executing rule MIMTM.3')\n mimtm3_l1 = fusetop.enclosed(mimtm_virtual, 0.6.um).polygons(0.001.um)\n mimtm3_l2 = fusetop.not_inside(mimtm_virtual)\n mimtm3_l = mimtm3_l1.join(mimtm3_l2)\n mimtm3_l.output('MIMTM.3', 'MIMTM.3 : Minimum MiM bottom plate overlap of Top plate.')\n```\nWhen `METAL_LEVEL = 5LM`, `top_min1_metal = metal4`\n\nSo `mimtm_virtual` is the intersection of `fusetop` layer grown by 1.06 and `metal4`.\nThe first part of the rule, `mimtm3_l1` checks that `metal4` encloses `fusetop` by 0.6um.\nThe second part of the rule `mimtm3_l2` checks for `fusetop` outside of `metal4`.\n\nNote that this rule is checking `metal4` and `fusetop` not `metal4` and `metal5`.", "author": { "id": "738396032295108721", "name": "bailey8889", "discriminator": "0000", "nickname": "bailey", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/0-EB806.png" }, "attachments": [], "embeds": [], "stickers": [], "reactions": [], "mentions": [ { "id": "733031319222878339", "name": "hateemx", "discriminator": "0000", "nickname": "Hateemx", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/42977590f2eb075d0eb6b48f02566b7e-3B288.png" } ], "inlineEmojis": [] }, { "id": "1444153581165875210", "type": "Default", "timestamp": "2025-11-29T02:30:44.826+00:00", "timestampEdited": "2025-11-29T02:32:10.306+00:00", "callEndedTimestamp": null, "isPinned": false, "content": "thanks, the cap is between 5 and 6. and the fusetop is enclosed by 0.6um. I even tried extending metal 5 even more, but no change", "author": { "id": "733031319222878339", "name": "hateemx", "discriminator": "0000", "nickname": "Hateemx", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/42977590f2eb075d0eb6b48f02566b7e-3B288.png" }, "attachments": [], "embeds": [], "stickers": [], "reactions": [], "mentions": [], "inlineEmojis": [] }, { "id": "1444166320366162040", "type": "Default", "timestamp": "2025-11-29T03:21:22.088+00:00", "timestampEdited": null, "callEndedTimestamp": null, "isPinned": false, "content": "@Hateemx - It's probably a good idea to commit your changes somewhere and share your GDS for other people to look at.", "author": { "id": "169786952432746498", "name": "mithro_", "discriminator": "0000", "nickname": "Tim 'mithro' Ansell", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/9679bb77da48d47c905b398d98a83780-75B68.png" }, "attachments": [], "embeds": [], "stickers": [], "reactions": [], "mentions": [ { "id": "733031319222878339", "name": "hateemx", "discriminator": "0000", "nickname": "Hateemx", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/42977590f2eb075d0eb6b48f02566b7e-3B288.png" } ], "inlineEmojis": [] }, { "id": "1444167500966268928", "type": "Default", "timestamp": "2025-11-29T03:26:03.565+00:00", "timestampEdited": null, "callEndedTimestamp": null, "isPinned": false, "content": "The problem is that \"the cap is between 5 and 6\" but this process has only 5 metals.", "author": { "id": "1365118310701600900", "name": "rtimothyedwards_19428", "discriminator": "0000", "nickname": "Tim Edwards", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/6bcc8e61db497b620550682309ace5d5-D89B4.png" }, "attachments": [], "embeds": [], "stickers": [], "reactions": [], "mentions": [], "inlineEmojis": [] }, { "id": "1444167719351226511", "type": "Default", "timestamp": "2025-11-29T03:26:55.632+00:00", "timestampEdited": null, "callEndedTimestamp": null, "isPinned": false, "content": "@Hateemx When you say between 5 and 6, do you mean metal5 and metal6? Is this process `6LM` and not `5LM`?", "author": { "id": "738396032295108721", "name": "bailey8889", "discriminator": "0000", "nickname": "bailey", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/0-EB806.png" }, "attachments": [], "embeds": [], "stickers": [], "reactions": [], "mentions": [ { "id": "733031319222878339", "name": "hateemx", "discriminator": "0000", "nickname": "Hateemx", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/42977590f2eb075d0eb6b48f02566b7e-3B288.png" } ], "inlineEmojis": [] }, { "id": "1444168327860715602", "type": "Default", "timestamp": "2025-11-29T03:29:20.712+00:00", "timestampEdited": null, "callEndedTimestamp": null, "isPinned": false, "content": "Yes metal 5 and 6. There is no metal 6 yes I thought it is the same as \u201ctop metal\u201d but now I get it. I was just using the 2f0F cap and thought it corresponds to that", "author": { "id": "733031319222878339", "name": "hateemx", "discriminator": "0000", "nickname": "Hateemx", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/42977590f2eb075d0eb6b48f02566b7e-3B288.png" }, "attachments": [], "embeds": [], "stickers": [], "reactions": [], "mentions": [], "inlineEmojis": [] }, { "id": "1444171140661772329", "type": "Default", "timestamp": "2025-11-29T03:40:31.336+00:00", "timestampEdited": null, "callEndedTimestamp": null, "isPinned": false, "content": "@Hateemx If it's a pcell, there might be an option to specify the lower and/or upper layer.", "author": { "id": "738396032295108721", "name": "bailey8889", "discriminator": "0000", "nickname": "bailey", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/0-EB806.png" }, "attachments": [], "embeds": [], "stickers": [], "reactions": [], "mentions": [ { "id": "733031319222878339", "name": "hateemx", "discriminator": "0000", "nickname": "Hateemx", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/42977590f2eb075d0eb6b48f02566b7e-3B288.png" } ], "inlineEmojis": [] }, { "id": "1444180327114473564", "type": "Default", "timestamp": "2025-11-29T04:17:01.557+00:00", "timestampEdited": "2025-11-29T04:17:19.182+00:00", "callEndedTimestamp": null, "isPinned": false, "content": "The Pcell is called mimcap, without specifying capacitance densities. I can use lower metals but i am mot sure how the density works. So what if it is an M4/M5 cap?", "author": { "id": "733031319222878339", "name": "hateemx", "discriminator": "0000", "nickname": "Hateemx", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/42977590f2eb075d0eb6b48f02566b7e-3B288.png" }, "attachments": [], "embeds": [], "stickers": [], "reactions": [ { "emoji": { "id": "", "name": "\ud83e\udd14", "code": "thinking", "isAnimated": false, "imageUrl": "2025-11_media/1f914-15707.svg" }, "count": 1, "users": [ { "id": "738396032295108721", "name": "bailey8889", "discriminator": "0000", "nickname": "bailey", "color": null, "isBot": false, "avatarUrl": "2025-11_media/0-EB806.png" } ] } ], "mentions": [], "inlineEmojis": [] }, { "id": "1444236820249317426", "type": "Default", "timestamp": "2025-11-29T08:01:30.57+00:00", "timestampEdited": null, "callEndedTimestamp": null, "isPinned": false, "content": "There's MIM option A and B:\n\n- https://gf180mcu-pdk.readthedocs.io/en/latest/physical_verification/design_manual/drm_10_4_1.html\n- https://gf180mcu-pdk.readthedocs.io/en/latest/physical_verification/design_manual/drm_10_4_2.html\n\nAfaik this is the stack up we use: https://gf180mcu-pdk.readthedocs.io/en/latest/analog/layout/inter_specs/inter_specs_3_43.html\n\nSo the MIM cap should be on top of Metal4.", "author": { "id": "323371864074485771", "name": "mole99", "discriminator": "0000", "nickname": "Leo Moser (mole99)", "color": null, "isBot": false, "roles": [ { "id": "1423020172595298314", "name": "Mod", "color": null, "position": 1 } ], "avatarUrl": "2025-11_media/3c7c17f3225f6e56f4dccd83f14383f2-73F83.png" }, "attachments": [], "embeds": [], "stickers": [], "reactions": [], "mentions": [], "inlineEmojis": [] }, { "id": "1444352997915099259", "type": "Default", "timestamp": "2025-11-29T15:43:09.484+00:00", "timestampEdited": null, "callEndedTimestamp": null, "isPinned": false, "content": "Thanks everyone!", "author": { "id": "733031319222878339", "name": "hateemx", "discriminator": "0000", "nickname": "Hateemx", "color": null, "isBot": false, "roles": [], "avatarUrl": "2025-11_media/42977590f2eb075d0eb6b48f02566b7e-3B288.png" }, "attachments": [], "embeds": [], "stickers": [], "reactions": [], "mentions": [], "inlineEmojis": [] } ], "messageCount": 13 }