User bitsmack

29 votes

4 answers

10k views

At what frequencies does PCB design get tricky?

asked Jun 6, 2014 at 15:59

28 votes

4 answers

24k views

Which of these marks signifies Pin 1 on the STM32F (LQFP64)?

asked Aug 1, 2014 at 19:45

24 votes

7 answers

53k views

For embedded code, why should I use "uint_t" types instead of "unsigned int"?

asked Dec 22, 2014 at 20:37

20 votes

3 answers

22k views

Flash memory: Does the entire page need to be erased before writing just a few bytes?

asked Jul 23, 2014 at 22:24

14 votes

4 answers

48k views

Clearing USART (UART) interrupt flags in an STM32?

asked Mar 14, 2016 at 21:09

10 votes

2 answers

1k views

Black Pad. Will heat remove the gold from an ENIG finish?

asked Sep 26, 2019 at 18:23

8 votes

2 answers

1k views

What is this "paper-substrate pcb" technology called?

asked Feb 16, 2016 at 17:19

8 votes

1 answer

6k views

Are core and prepreg dielectrics interchangeable?

asked Aug 20, 2016 at 1:08

8 votes

2 answers

1k views

Should I keep the decoupling capacitor's vias isolated from ground fills?

asked Jul 7, 2014 at 19:26

7 votes

1 answer

872 views

Preferred balun location? (Are differential microstrips preferrable to single-ended?)

asked Dec 5, 2014 at 0:17

7 votes

1 answer

568 views

Limited blind via pairs - Use for power or for signal?

asked Sep 19, 2018 at 0:17

6 votes

1 answer

1k views

How to minimize characteristic impedance mismatches caused by vias?

asked Dec 9, 2014 at 19:07

6 votes

3 answers

5k views

Can differential USB traces be routed relative to Power (not Ground) planes?

asked Dec 3, 2014 at 1:22

6 votes

2 answers

1k views

Decoupling with multiple caps per pin. Which should be closest?

asked Jun 27, 2014 at 19:24

6 votes

3 answers

963 views

Consensus on microstrip trace impedance calculations?

asked Apr 4, 2014 at 17:44

6 votes

8 answers

3k views

How can I add "standoffs" to elevate a SMD component above the PCB?

asked May 2, 2019 at 1:57

5 votes

2 answers

812 views

Bypass caps under BGA: Should I isolate vias from planes?

asked Dec 4, 2018 at 20:01

5 votes

1 answer

2k views

Calculating differential PCB traces - Edge-Coupled Microstrip

asked Jul 8, 2014 at 19:20

5 votes

1 answer

2k views

How do I interrupt an ISR with a higher-priority ISR on an STM32F105?

asked Sep 12, 2017 at 4:02

4 votes

2 answers

1k views

Is a matching network needed if the antenna feed line is very short?

asked May 14, 2018 at 21:42

4 votes

1 answer

650 views

How to prevent tombstoning using via-in-pad with small SMD discretes

asked Oct 5, 2018 at 1:14

4 votes

2 answers

4k views

How to _disable_ USB on STM32F1xx?

asked Jan 20, 2017 at 1:50

4 votes

1 answer

1k views

Why is this hex file different than the code programmed onto the device?

asked Mar 14, 2017 at 10:14

4 votes

1 answer

2k views

What are "slash sheets", and how do they relate to PCB substrates?

asked Jun 30, 2015 at 21:44

4 votes

2 answers

16k views

Pre-Defining EEPROM Values in XC8 Compiler

asked Apr 28, 2014 at 23:01

4 votes

3 answers

5k views

How to interpret these antenna radiation patterns?

asked Dec 4, 2014 at 21:00

4 votes

2 answers

1k views

Which of these Stripline Impedance Calculations is correct?

asked Dec 9, 2014 at 18:51

4 votes

1 answer

2k views

Building a wall-wart style case

asked Nov 14, 2014 at 23:07

4 votes

3 answers

955 views

What is the source of this shape on my USB eye diagram?

asked Jun 7, 2016 at 5:27

3 votes

1 answer

2k views

How can I use a greater USB charge current without device enumeration?

asked Oct 28, 2014 at 21:37

Stack Exchange Network

40 Questions

At what frequencies does PCB design get tricky?

Which of these marks signifies Pin 1 on the STM32F (LQFP64)?

For embedded code, why should I use "uint_t" types instead of "unsigned int"?

Flash memory: Does the entire page need to be erased before writing just a few bytes?

Clearing USART (UART) interrupt flags in an STM32?

Black Pad. Will heat remove the gold from an ENIG finish?

What is this "paper-substrate pcb" technology called?

Are core and prepreg dielectrics interchangeable?

Should I keep the decoupling capacitor's vias isolated from ground fills?

Preferred balun location? (Are differential microstrips preferrable to single-ended?)

Limited blind via pairs - Use for power or for signal?

How to minimize characteristic impedance mismatches caused by vias?

Can differential USB traces be routed relative to Power (not Ground) planes?

Decoupling with multiple caps per pin. Which should be closest?

Consensus on microstrip trace impedance calculations?

How can I add "standoffs" to elevate a SMD component above the PCB?

Bypass caps under BGA: Should I isolate vias from planes?

Calculating differential PCB traces - Edge-Coupled Microstrip

How do I interrupt an ISR with a higher-priority ISR on an STM32F105?

Is a matching network needed if the antenna feed line is very short?

How to prevent tombstoning using via-in-pad with small SMD discretes

How to _disable_ USB on STM32F1xx?

Why is this hex file different than the code programmed onto the device?

What are "slash sheets", and how do they relate to PCB substrates?

Pre-Defining EEPROM Values in XC8 Compiler

How to interpret these antenna radiation patterns?

Which of these Stripline Impedance Calculations is correct?

Building a wall-wart style case

What is the source of this shape on my USB eye diagram?

How can I use a greater USB charge current without device enumeration?