Teensy 4.1 - No Ethernet
This is a new version of the popular Teensy 4.1 but without the Ethernet chip onboard. Many users don’t require Ethernet, and this version helps PJRC continue providing Teensy 4.1 despite chip shortages. Teensy 4.1 offers the fastest microcontroller in a 2.4" x 0.7" form factor and can be programmed using the Arduino IDE with Teensyduino. Its USB Host port allows connection of USB devices like keyboards and MIDI instruments. A 5-pin header and USB Host cable are required for USB device connection. USB hubs may be used for multiple devices.
Package Includes:
- 1 x Teensy 4.1
- 1 x Pins for the Board
Features:
- ARM Cortex-M7 at 600 MHz
- Floating point math unit, 64 & 32 bits
- 7936K Flash, 1024K RAM (512K tightly coupled), 4K EEPROM (emulated)
- QSPI memory expansion (2 extra RAM/Flash chip locations)
- USB device & host at 480 Mbit/sec
- 55 digital I/O pins, 35 PWM output pins
- 18 analog input pins
- 8 serial, 3 SPI, 3 I2C ports
- 2 I2S/TDM and 1 S/PDIF digital audio port
- 3 CAN Bus (1 with CAN FD)
- 1 SDIO (4-bit) native SD Card port
- 32 general-purpose DMA channels
- Cryptographic acceleration & random number generator
- RTC for date/time
- Programmable FlexIO and Pixel Processing Pipeline
- Peripheral cross triggering
- Power On/Off management
Processor:
- Performance: ARM Cortex-M7 offers high-speed real-time computing.
- Dual-Issue Superscalar Architecture: Executes 2 instructions per clock at 600 MHz depending on compiler optimization.
- Floating Point Unit: 32-bit float matches integer speed; 64-bit double runs at half speed.
- Tightly Coupled Memory: Single-cycle access to memory via ITCM & DTCM buses.
- Cache: Two 32K caches for instructions and data.
- Branch Prediction: Reduces loop and branch overhead.
- Digital Signal Processing: DSP instructions accelerate signal processing and Fourier transform.
Pinouts:
Teensy 4.1 brings all general-purpose I/O pins to breadboard-friendly pads, with a total of 55 I/O pins. 42 are accessible using a solderless breadboard. A pinout reference card is included (front/back).
Comparison to Teensy 4.0:
| Feature | Teensy 4.1 (No Ethernet) | Teensy 4.0 |
|---|---|---|
| Ethernet | None | None |
| USB Host | 5 Pins with power management | 2 SMT Pads, SDIO (4-bit data) |
| Micro SD Socket | Yes | 8 SMT Pads |
| PWM Pins | 35 | 31 |
| Analog Inputs | 18 | 14 |
| Serial Ports | 8 | 7 |
| Flash Memory | 8 MB | 2 MB |
| QSPI Memory | 2 chips + program memory | Program memory only |
| Breadboard Friendly I/O | 42 | 24 |
| Bottom SMT Pad Signals | 7 | 16 |
| SD Card Signals | 6 | 0 |
| Total I/O Pins | 55 | 40 |
Features:
- ARM Cortex-M7 at 600 MHz
- Floating point math unit, 64 & 32 bits
- 7936K Flash, 1024K RAM (512K tightly coupled), 4K EEPROM (emulated)
- QSPI memory expansion (2 extra RAM/Flash chip locations)
- USB device & host at 480 Mbit/sec
- 55 digital I/O pins, 35 PWM output pins
- 18 analog input pins
- 8 serial, 3 SPI, 3 I2C ports
- 2 I2S/TDM and 1 S/PDIF digital audio port
- 3 CAN Bus (1 with CAN FD)
- 1 SDIO (4-bit) native SD Card port
- 32 general-purpose DMA channels
- Cryptographic acceleration & random number generator
- RTC for date/time
- Programmable FlexIO and Pixel Processing Pipeline
- Peripheral cross triggering
- Power On/Off management
Processor:
- Performance: ARM Cortex-M7 offers high-speed real-time computing.
- Dual-Issue Superscalar Architecture: Executes 2 instructions per clock at 600 MHz depending on compiler optimization.
- Floating Point Unit: 32-bit float matches integer speed; 64-bit double runs at half speed.
- Tightly Coupled Memory: Single-cycle access to memory via ITCM & DTCM buses.
- Cache: Two 32K caches for instructions and data.
- Branch Prediction: Reduces loop and branch overhead.
- Digital Signal Processing: DSP instructions accelerate signal processing and Fourier transform.
Pinouts:
Teensy 4.1 brings all general-purpose I/O pins to breadboard-friendly pads, with a total of 55 I/O pins. 42 are accessible using a solderless breadboard. A pinout reference card is included (front/back).
Comparison to Teensy 4.0:
| Feature | Teensy 4.1 (No Ethernet) | Teensy 4.0 |
|---|---|---|
| Ethernet | None | None |
| USB Host | 5 Pins with power management | 2 SMT Pads, SDIO (4-bit data) |
| Micro SD Socket | Yes | 8 SMT Pads |
| PWM Pins | 35 | 31 |
| Analog Inputs | 18 | 14 |
| Serial Ports | 8 | 7 |
| Flash Memory | 8 MB | 2 MB |
| QSPI Memory | 2 chips + program memory | Program memory only |
| Breadboard Friendly I/O | 42 | 24 |
| Bottom SMT Pad Signals | 7 | 16 |
| SD Card Signals | 6 | 0 |
| Total I/O Pins | 55 | 40 |