What’s on the Setup & Hold Time poster
The rule, 3 worked examples, and the mistake everyone makes.
- Data must be stable for the setup time before a clock edge and for the hold time afte…
- T_clk ≥ t_cq + t_logic + t_setup + t_skew
- 0.4 + 3.2 + 0.3 ns = 3.9 ns per cycle
- Maximum clock = About 256 MHz
- Hold violation = Add path delay
- Common mistake: Slowing the clock to fix a hold violation → Adding delay to the offen…
Violating either window risks metastability. Synchronising an asynchronous input takes two flip-flops in series, never one.
Questions about the Setup & Hold Time poster
- What’s on the Setup & Hold Time poster?
- The rule, 3 worked examples, and the mistake everyone makes. Data must be stable for the setup time before a clock edge and for the hold time afte…; T_clk ≥ t_cq + t_logic + t_setup + t_skew; 0.4 + 3.2 + 0.3 ns = 3.9 ns per cycle; Maximum clock = About 256 MHz; Hold violation = Add path delay; Common mistake: Slowing the clock to fix a hold violation → Adding delay to the offen…. Violating either window risks metastability. Synchronising an asynchronous input takes two flip-flops in series, never one.
- Who is the Setup & Hold Time poster for?
- Setup & Hold Time belongs to the Electrical Engineering section rather than to a school year, because engineering is not something one grade owns. Anyone learning digital logic can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Setup & Hold Time poster?
- Use it to work out a maximum clock rate, or to read a static timing report. A wall chart earns its place by being glanceable from where the work is happening, so Setup & Hold Time belongs on the wall where that engineering work actually happens, within glancing distance, rather than filed away.
- What other posters go with Setup & Hold Time?
- Adders, Boolean Algebra and Counters & Registers sit alongside Setup & Hold Time in the Electrical Engineering section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.AddersBoolean AlgebraCounters & Registers
- Is the Setup & Hold Time poster free to download and print?
- Yes. Setup & Hold Time downloads as a free PDF with no account, no email and no watermark, like everything else in the Electrical Engineering section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Setup & Hold Time poster print at?
- Setup & Hold Time is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Setup & Hold Time loses nothing.Printing guide
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