Teensy 3.2 features a 32 bit ARM processor.

Teensy 3.2 is a direct, 100% compatible replacement for Teensy 3.1. It is fully compatible with all shields and add-on boards made for Teensy 3.1, including the Audio Board and OctoWS2811 Adaptor.

Special Features:

• More Memory For Awesome Projects : The RAM has quadrupled, from 16K to 64K. While 16K is plenty for nearly all Arduino libraries, 64K allows for more advanced applications. Icons and graphics for color displays and audio effects requiring delays, like reverb and chorus, will become possible on Teensy 3.2. Flash memory has also doubled, to 256K, and provides double the memory bandwidth. 
• 5 Volt Tolerance on Digital Inputs : Today most new chips use 3.3V signals, but many legacy products output 5 volt digital signals. These can now be directly connected to Teensy 3.1's digital inputs. All digital pins are 5 volt tolerant on Teensy 3.2. However, the analog-only pins (A10-A14), AREF, Program and Reset are 3.3V only. 
• 12 Bit Analog Output : Teensy 3.2 has a proper analog output. You can always filter PWM, but true analog output responds rapidly. The output is created by the stable reference voltage, so it's doesn't vary if your power supply voltage changes slightly.
• Two Analog to Digital Converters : With analogRead(), you can measure many signals, but only 1 at a time. Teensy 3.2 has a second ADC, so you can concurrently measure 2 analog signals. For stereo audio or power monitoring, sampling both left and right, or voltage and current at the same moment is very beneficial.
• CAN Bus : Controller Area Network is a communication used in automobiles. A new library to support Teensy 3.2's CAN controller is planned. 
• Pinouts : Teensy 3.2 is meant to be a drop-in replacement for Teensy 3.0. Only 1 pin has different functionality. The reset pin was replaced by A14/DAC, which you can use for true analog output, or as another analog input
• Reset Signal : Teensy 3.0 supported both a Program signal, to reboot into bootloader mode, and a traditional Reset signal, for a conventional reboot that restarts your application. 
• The Reset signal can be found on a new test point on the bottom side of Teensy 3.2

Specifications:

• Processor : MK20DX256VLH7
• Core : Cortex-M4
• Rated Speed : 72 Mhz
• Overclockable : 96 Mhz
• Flash Memory : 256 Kb
• Bandwidth : 192 Mb/sec
• Cache : 256 b
• RAM : 64Kb
• EEPROM : 2 Kb
• Direct Memory Access : 16 Channels
• Digital I/O : 34 Pins
• Voltage Output : 3.3 V
• Voltage Input : 5V Tolerant
• Analog Input: 21 Pins
• Converters : 2
• Resolution :16 Bits
• Usable : 13 Bits
• Prog Gain Amp : 1
• Touch Sensing : 12 Pins
• Comparators : 3
• Analog Output : 1 Pin
• DAC Resolution : 12 Bits
• Timers : 12 Total
• FTM Type : 3
• PWM Outputs : 12 Pins
• PDB Type : 1
• CMT (infrared) Type : 1
• LPTMR Type : 1
• PIT (interval) Type : 4
• Systick : 1
• RTC (date/time) ** : 1
• USB : 1
• Serial : 3
• Serial With FIFOs : 2
• High Res Baud : 3
• Fast Clock : 2
• SPI : 1
• SPI With FIFOs : 1
• I2C : 2
• CAN Bus : 1
• I2S Audio : 1
• FIFO Size : 1

** RTC requires a 32.768 kHz crystal & 3V battery.