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Tagged with ttl microcontroller
3
questions
3
votes
4
answers
13k
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Turn TTL output of logic IC into output capable of driving 50 ohm devices
I want to provide front-panel trigger signals with the microcontroller inside my device. The trigger signal will be fed via a 50 ohm coax cable to another device with a 50 ohm input.
A direct ...
- 653
17
votes
2
answers
49k
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How does TTL serial work?
I've been trying to find a good description of the TTL serial "standard" without much luck. I understand that serial transmit (TX) and receive (RX) lines idle high (at VCC) and that they drop to ...
- 2,564
3
votes
2
answers
11k
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Should I connect unused STM32 pins to ground?
I'm designing some circuit using STM32L152RBT6 microcontroller. I'm using STM32L-DISCOVERY scheme as a reference of good STM32 practices. I've noticed that free pins of programmer's MCU aren't ...
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