Industry-Ready · 12 Deep-Dive Modules · No EDA Tools Required

Master STA from
First Principles to Signoff

The complete Static Timing Analysis course — clock trees, OCV, multicycle paths, and timing closure — all with interactive in-browser waveform labs.

slackzero analyze --path all --corners tt_025 ss_0v9 ff_1v1
✓ Timing paths loaded: 14,328 reg2reg, 891 in2reg, 612 reg2out
✓ Clock domains: clk_core 500MHz · clk_mem 200MHz · clk_usb 60MHz
✓ WNS: -0.142 ns · TNS: -28.64 ns · Failing endpoints: 7
→ Module 12: Timing Closure — fixing 7 endpoints with ECO moves…
✓ Closure achieved. WNS: +0.082 ns ✓
Start Free → Module 1 View Full Curriculum
WNS
CLK 500MHzDATA PATHLAUNCHCAPTURESLACK
Clock
Data
Timing marker
60+ Interactive Labs
12 Deep Modules
0 EDA Tools Needed
Lifetime Access

STA from Foundations to Signoff

Every timing concept you'll meet on the job — from delay arcs to OCV to closure loops.

Setup & Hold Analysis

Flip-flop internals, launch/capture edges, slack equations, animated waveform labs with live sliders for clock period and skew.

🕐

Clock Trees & Uncertainty

Skew, latency, jitter, clock uncertainty, generated clocks, virtual clocks — clock-tree skew sandbox shows slack changing live.

📋

SDC Constraints

Write correct create_clock, IO delays, transitions, and load constraints in an interactive constraint checker.

Timing Exceptions

False paths, multicycle paths (setup AND hold edge shifts!), min/max, disable_timing. Interactive multicycle visualizer moves capture edge.

📐

OCV, AOCV & POCV

PVT corners, derates, CRPR/pessimism removal, OCV→AOCV→POCV progression, corner-matrix slack heatmap lab.

🎯

Timing Closure

Reading reports, ECO loops (size/buffer/vt-swap), useful skew, signoff checklist. Closure game: fix a failing design within area budget.

Complete STA Curriculum

Industry-sequenced from timing fundamentals to multi-corner/multi-mode signoff.

M01

Timing Foundations

Why STA? Delay, slew, RC basics, units · RC delay explorer lab

FREE
M02

Cells & Liberty Libraries

Timing arcs, unateness, NLDM tables, CCS/ECSM concept · .lib query lab

PRO
M03

Timing Paths

Startpoints/endpoints, path groups, reg2reg/in2reg/reg2out · path tracing lab

PRO
M04

Setup & Hold

FF internals, windows, slack equations, violations · waveform slider lab

PRO
M05

Clocks

Skew, latency, jitter, uncertainty, generated/virtual clocks · skew sandbox

PRO
M06

SDC Constraints

create_clock, IO delays, completeness · interactive constraint checker

PRO
M07

Timing Exceptions

False/multicycle/min-max paths, disable arcs · multicycle visualizer

PRO
M08

Interconnect & Parasitics

Wire models, Elmore delay, SPEF, extraction corners · Elmore RC tree lab

PRO
M09

OCV & Variation

PVT corners, derates, OCV→AOCV→POCV, CRPR · CRPR demonstrator lab

PRO
M10

MCMM & Modes

Corners × modes, scenario explosion, dominant corners · slack heatmap

PRO
M11

Advanced Topics

Crosstalk/SI, noise, latch time-borrowing, CDC awareness · aggressor/victim sim

PRO
M12

Timing Closure & Career

ECO loops, useful skew, signoff checklist, interview prep · closure game

PRO

What Our Students Say

"The multicycle path visualizer finally made setup/hold edge shifts click for me. I'd been confused for two years."

AK
Arun K.
STA Engineer · TSMC node

"MCMM heatmap lab was eye-opening. Went from confused by corner explosions to writing MCMM scripts confidently."

PS
Preethi S.
Physical Design · Samsung Austin

"Module 9 on POCV finally explained what derates actually mean. The CRPR lab was the best 30 minutes I spent on STA."

MR
Mihail R.
IC Design · Arm UK

Start Free. Go Deep.

Module 1 is permanently free. Upgrade when you're ready for the full STA toolkit.

Preview
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Module 1 forever free — no card
  • Timing Foundations module
  • RC delay explorer lab
  • Access on any device
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5+ seats · volume discount
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Ready to close timing on your first design?

Join engineers who went from confused by timing reports to confidently running STA signoff — in weeks, not years.

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