#⁉️-questions Archive

🧵 F_t / F_max

5 messages • Last activity: 2026-11

🧵 Top Metal thickness

10 messages • Last activity: 2026-11

🧵 xschem bench binary counter

4 messages • Last activity: 2026-11

🧵 Missing noise models in PMOS (3.3V & 5V/6V)

12 messages • Last activity: 2026-11

🧵 Is magic PEX extraction expected broken for `gf180mcu_fd_sc_mcu7t5v0__fillcap_64`?

239 messages • Last activity: 2026-11

🧵 gf180 tapeout template drc error

12 messages • Last activity: 2026-11

🧵 Chip-on-Board Module as Component

13 messages • Last activity: 2026-11

🧵 Does anyone have experience running the open source PDKs with Cadence Virtuoso?

5 messages • Last activity: 2026-11

🧵 When will run3 be available on the platform ?

6 messages • Last activity: 2026-11

🧵 InOut unsupported error

2 messages • Last activity: 2026-11

🧵 Project ID

3 messages • Last activity: 2026-11

🧵 Half Slot Die Size

4 messages • Last activity: 2026-11

🧵 Cadence PDK?

17 messages • Last activity: 2026-11

🧵 How to test?

7 messages • Last activity: 2026-11

🧵 How to retrieve run error message from plateform.wafer.space?

30 messages • Last activity: 2026-11

🧵 MCell ? YMTP ?

5 messages • Last activity: 2026-11

🧵 Is there a DRC violation waiver system?

34 messages • Last activity: 2026-11

🧵 Pre check magic DRC errors

33 messages • Last activity: 2026-11

🧵 Unused pad

5 messages • Last activity: 2026-11

🧵 Butting taps

5 messages • Last activity: 2026-11

🧵 Antenna error

3 messages • Last activity: 2026-11

🧵 Are plans for opening up sky90 PDK cancelled?

33 messages • Last activity: 2026-11

🧵 Detailed Routing Antenna Violation

4 messages • Last activity: 2026-11

🧵 How does chiplet / multi die design / manufacturing work?

8 messages • Last activity: 2026-11

🧵 COC PCB files upload and checks

4 messages • Last activity: 2026-11

🧵 io pads versions

2 messages • Last activity: 2026-11

🧵 Metal spacing problem with gf180mcu_as_sc_mcu7t3v3 buffer cells

13 messages • Last activity: 2026-11

🧵 Can masks partially be reused?

12 messages • Last activity: 2026-11

🧵 Release Checklist

33 messages • Last activity: 2026-11

🧵 Running LVS for padframe

16 messages • Last activity: 2026-11

🧵 SDF annotation issues with Icarus

12 messages • Last activity: 2026-11

🧵 Expected VSS connection for the generated seal ring

4 messages • Last activity: 2026-11

🧵 Using commercial tools

3 messages • Last activity: 2026-11

🧵 Bucket Brigade Delay

7 messages • Last activity: 2026-11

🧵 PDN M4 routing over SRAMs

34 messages • Last activity: 2026-11

🧵 Metal Fill

31 messages • Last activity: 2026-11

🧵 False positive DRC PP5.a andV1.3c

17 messages • Last activity: 2026-11

🧵 Setup Violations in tt corners when using macros

11 messages • Last activity: 2026-11

🧵 Multiple PCB design

8 messages • Last activity: 2026-11

🧵 WLCSP ?

226 messages • Last activity: 2026-11

🧵 Number of IO cells

4 messages • Last activity: 2026-11

🧵 Failing Hold Checks

22 messages • Last activity: 2026-11

🧵 Hi!

1 message • Last activity: 2026-11

🧵 Connecting analog pin in librelane flow

26 messages • Last activity: 2026-11

🧵 CUP Rules allowed?

28 messages • Last activity: 2026-11

🧵 Early-bird purchase and adding CoB service later

11 messages • Last activity: 2026-11

🧵 gf180mcuD lvs check error -- layout cell pin order mismatch

19 messages • Last activity: 2026-11

🧵 Free Running Clock

2 messages • Last activity: 2026-11

🧵 Requirements for COB

14 messages • Last activity: 2026-11

🧵 3rd party IPs usage?

9 messages • Last activity: 2026-11

🧵 What mimcaps can we use on gf180mcu?

20 messages • Last activity: 2026-11

🧵 Creating masks ourselves

25 messages • Last activity: 2026-11

🧵 Yosys check errors found

7 messages • Last activity: 2026-11

🧵 Run 2 Timeline?

20 messages • Last activity: 2026-11

🧵 iverilog sim

2 messages • Last activity: 2026-11

🧵 DRC error Cap

13 messages • Last activity: 2026-11

🧵 Magic DRC waving

18 messages • Last activity: 2026-11

🧵 Can you delete two pad-bearing edges?

16 messages • Last activity: 2026-11

🧵 Should clone-pdk also clone 3v3 OCD SRAM if chosen as well?

9 messages • Last activity: 2026-11

🧵 Salicidation

8 messages • Last activity: 2026-11

🧵 Do we need OCD IO pads for digital 3v3 design

6 messages • Last activity: 2026-11

🧵 Maximum current-carrying capacity for power pads and bonding wires?

7 messages • Last activity: 2026-11

🧵 Other pad frame options

11 messages • Last activity: 2026-11

🧵 Packaging Company Considerations

23 messages • Last activity: 2026-11

🧵 clock input for the chip

4 messages • Last activity: 2026-11

🧵 Will we get our physically fabricated chip from Zero-to-Asic Course?

7 messages • Last activity: 2026-11

🧵 Issue with metal fill script

10 messages • Last activity: 2026-11

🧵 Can we put theremin-style gesture tracking inside the chip?

1 message • Last activity: 2026-11

🧵 Std Cell Library For FFs

3 messages • Last activity: 2026-11

🧵 Run 3 sold out: any more slots, and a Run 4 timeline?

17 messages • Last activity: 2026-11

🧵 why can't drm be completely encoded within lef

9 messages • Last activity: 2026-11

🧵 minimum CoB quantity?

11 messages • Last activity: 2026-11

🧵 Handling commercial DRC violations not covered by the open-source deck

3 messages • Last activity: 2026-11

🧵 Unmapped Issue

2 messages • Last activity: 2026-11

🧵 CoB possible for 2x2 tiles?

13 messages • Last activity: 2026-11

🧵 Corners for commercial range?

4 messages • Last activity: 2026-11

🧵 Magic error: non-integer magnification

74 messages • Last activity: 2026-11

🧵 Passive on-chip components? Inductor Spirals?

17 messages • Last activity: 2026-11

🧵 Analog SoC design draft proofread

2 messages • Last activity: 2026-11

🧵 Frequency performance degradation using open-source PDK and tools

45 messages • Last activity: 2026-11

🧵 IO selection

4 messages • Last activity: 2026-11

🧵 Metal- and Module Selection for Run3

9 messages • Last activity: 2026-11

🧵 Is this tapeout cost calculator tool accurate?

3 messages • Last activity: 2026-11

🧵 Standard Voltage & SRAM Macros

57 messages • Last activity: 2026-11

🧵 Precheck DRC

3 messages • Last activity: 2026-11

🧵 SRAM rules

10 messages • Last activity: 2026-11

🧵 Using Pad Frame Template

8 messages • Last activity: 2026-11

🧵 Magic PEX capacitor is negative

4 messages • Last activity: 2026-11

🧵 Generate clean padring

5 messages • Last activity: 2026-11

🧵 Any idea what the packaging looks like? As in the connectors

4 messages • Last activity: 2026-11

🧵 LVS_IGNORE_CELLS for fill/cap cells?

11 messages • Last activity: 2026-11

🧵 high res poly resistor option

6 messages • Last activity: 2026-11

🧵 Non-standard Layout Wirebonding

9 messages • Last activity: 2026-11

🧵 Are Digital I/O cells simultaneous INOUT capable?

4 messages • Last activity: 2026-11

🧵 1.xV power on GF180MCU?

2 messages • Last activity: 2026-11

🧵 Anybody thought of 1-2 mm² slot to be packaged SOIC-8 package?

10 messages • Last activity: 2026-11

🧵 Paying a slot via wire transfer and requesting a quote/invoice

6 messages • Last activity: 2026-11

🧵 Are there SPICE models for pwell resistors?

3 messages • Last activity: 2026-11

🧵 question on pricing of wafer.space and tiny tapeout

7 messages • Last activity: 2026-11

🧵 Possibility of soldering to lateral GaN

24 messages • Last activity: 2026-11

🧵 CoB Details for Half-Size Slots

2 messages • Last activity: 2026-11

🧵 GF180 Run 2 - Undiced Option

9 messages • Last activity: 2026-11

🧵 MEMS

10 messages • Last activity: 2026-11

🧵 Openroad GUI timing corner selection

3 messages • Last activity: 2026-11

🧵 Xyce for GF180MCU

3 messages • Last activity: 2026-11

🧵 Overall Die Thickness

2 messages • Last activity: 2026-11

🧵 Pin Placement

9 messages • Last activity: 2026-11

🧵 Slew and Cap Violations

13 messages • Last activity: 2026-11

🧵 Via arrays

8 messages • Last activity: 2026-11

🧵 Are native Vt nmos available ?

3 messages • Last activity: 2026-11

🧵 Tons of DRC issues

130 messages • Last activity: 2026-11

🧵 sram1024x8 (OCD)

10 messages • Last activity: 2026-11

🧵 Constant inputs in SDC

2 messages • Last activity: 2026-11

🧵 LVPWELL

3 messages • Last activity: 2026-11

🧵 10 hour running time

14 messages • Last activity: 2026-11

🧵 Splitting the pad ring for a 5 V eFuse segment on a 1x0p5 slot. OK for precheck?

11 messages • Last activity: 2026-11