Please recommend a microcontroller with 5V IO port output

hugue

Please recommend a microcontroller with 5V IO port output [Copy link]

 

I need to use 5V output as a trigger signal, but I don't know which microcontroller's IO port output is 5V. Can you recommend one? Thank you.

littleshrimp

Nowadays, microcontrollers are moving towards low voltage. I suggest you use level conversion. I have played with Fuji's cortex-m3 microcontroller before. It supports 5v operation and generates a lot of heat. You can take a look at this series MB9BF524LPMC1

maychang

For a microcontroller with a working power supply voltage of 5V, the output amplitude can generally reach 0~5V. For an old microcontroller, the working power supply voltage is generally 5V.

hugue

littleshrimp posted on 2018-11-19 13:43 Nowadays, microcontrollers are moving towards low voltage. I suggest you use level conversion. I used to play with Fuji's cortex-m3 microcontroller that supports 5V. It generates serious heat when working...

Thank you. I plan to use a 3.3V microcontroller with level conversion.

hugue

maychang posted on 2018-11-19 13:48 The output amplitude of a microcontroller with a working power supply voltage of 5V can generally reach 0~5V. For old microcontrollers, the working power supply voltage is generally 5V.

Thank you, STC89C52 has a 5V microcontroller, but I plan to use a 3.3V microcontroller with a level converter.

maychang

hugue posted on 2018-11-19 14:02 Thank you, STC89C52 has a 5V microcontroller, but I plan to use a 3.3V microcontroller with level conversion.

In fact, this is the best way.

heningbo

Why do you need a 5V microcontroller? Just use 164245 or 16245 to convert it. If you want to select bidirectionally, use TXB0104. In addition, 5V voltage is not your only standard. For example, capacity, speed, etc. So use the more popular ones in the industry and convert them.

dcexpert

Many AVR, PIC, and 51 support 5V.

chunyang

Except for antiques from the 1980s or earlier, any 5V powered MCU has IO outputs very close to 5V, and any MCU powered below 5V cannot directly output 5V. So, you either use 5V to directly power the MCU, or add an external level converter, but it still requires a 5V power supply.

LuJianchang

1. Some IOs of stm32 are tolerant to 5V. Set open-drain output, and then add a 5V pull-up resistor; 2. Use two NPN transistors for switch control. If the output waveform does not require the same phase, one transistor can be omitted. Attach the circuit simulation diagram.