Arduino Teensy

[last updated: 2024-08-11]
Arduino boards
Teensy Installation
Teensy Operation
see Links below
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• Bunches of Teensy boards have been produced. Several are already deprecated, as newer versions are often pin-compatible with older models, and offer higher performance.
• Prior to 2019, the top of the line was version 3.2, though 3.5 & 3.6 were also valuable for having SD card slots.
• But in 2019 the 4.0 was released, which has a different MPU, 10x faster clock, native floating-point math, and basically a couple of orders of magnitude faster all in all.
• Teensy 4.0 Specifications:
• ARM Cortex-M7 at 600 MHz
• 1024K RAM (512K is tightly coupled)
• 2048K Flash (64K reserved for recovery & EEPROM emulation)
• 2 USB ports, both 480 MBit/sec
• 3 CAN Bus (1 with CAN FD)
• 2 I2S Digital Audio
• 1 S/PDIF Digital Audio
• 1 SDIO (4 bit) native SD
• 3 SPI, all with 16 word FIFO
• 3 I2C, all with 4 byte FIFO
• 7 Serial, all with 4 byte FIFO
• 32 general purpose DMA channels
• 31 PWM pins
• 40 digital pins, all interrrupt capable
• 14 analog pins, 2 ADCs on chip
• onboard LED digital 13

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• 3.3v MAXIMUM on all pins except Vin and Vusb
  3v3 output pin: 250ma max drive

  
  how many ma drive on digital output pins?
  how many ma drive on 5v output pin?
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• Links:
  • https://www.pjrc.com/store/teensy40.html
  • display: https://www.pjrc.com/store/display_ili9341_touch.html
  • (link to:) PJRC Teensy 4.0
  • (link to:) PJRC forum
  • (link to:) Teensy EEPROM
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