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Teensy LC - Low Cost
[33060]
CHF 15.95

Stock: 25

Teensy-LC (Low Cost) is a powerful 32 bit microcontroller board, with a rich set of hardware peripherals, at a very affordable price!

The Teensy-LC delivers an impressive collection of capabilities to make modern electronic projects simpler. It features an ARM Cortex-M0+ processor at 48 MHz, 62K Flash, 8K RAM, 12 bit analog input & output, hardware Serial, SPI & I2C, USB, and a total of 27 I/O pins.

Teensy-LC maintains the same form-factor as Teensy 3.1, with most pins offering similar peripheral features.

Real Hardware Serial

Most modern projects involve serial communication with sensors, other chips, other systems or even the internet. Hardware serial ports greatly simplify projects and enable excellent performance.

Teensy-LC provide plenty of serial connectivity: 2 SPI ports, 2 I2C and 3 Serial ports. All 3 serial ports are supported by high quality drivers in Teensyduino, with both transmit and receive buffering, and even support for RS485 transmitter enable.

Teensy-LC will be ideal for inexpensive "Internet Of Things" projects when paired with a ESP8266 Wifi module, which requires a fast hardware serial or SPI port.

Efficient USB Communication

Teensy-LC has the same powerful USB hardware as Teensy 3.1. All USB data transfer is done directly to memory with minimal CPU overhead.

Teensy-LC supports USB Serial, MIDI, Keyboard (international layouts), Mouse, Joystick, and RawHID protocols. A full set of 16 bidirectional USB endpoints are supported by the hardware, allowing any type of USB device. As more USB protocols are added to Teensyduino, despite its low cost, Teensy-LC will be up the task.

Hardware Timers

Many Arduino libraries require a hardware timer. Traditional Arduino products have 3 or 4 timers, with only 1 or 2 providing more than 8 bit resolution.

Teensy-LC has a total of 7 timers, all of them with 16 or more bits of resolution, to allow excellent compatibility with easy-to-use libraries. Many combinations of popular libraries, which would normally conflict, can seamlessly run together on Teensy LC and Teensy 3.1.

Analog Input & Output at 12 Bit Resolution

Analog signals are critically important to many projects. Teensy-LC has 13 pins than can function as analog inputs. The effective analog resolution is 12 bits.

It also has a true 12 bit digital to analog converter, for an analog output signal.

32 bit ARM Cortex M0+ Processor

The Cortex-M0+ processor is a powerful, full 32 bit CPU, designed for lower power, lower cost devices.

Cortex-M0+ has fewer instructions and a simpler bus structure than the more powerful Cortex-M4 on Teensy 3.1. For simple code, M0+ often runs at similar speed, when running at the same clock frequency. For math-intensive applications, Cortex-M4 can be significantly faster, and of course it supports higher clock rates.

Cortex-M0+ at 48 MHz is much faster than 8 bit AVR processors at 16 MHz, especially when manipulating 16 and 32 bit variables!

5 Volt Buffer for WS2812/NeoPixel LED Projects

Teensy-LC provides a 5V output to directly drive WS2812/NeoPixel LEDs.

A 74LV1T125 buffer is connected to pin 17, with the increased output voltage available on another pin.

Comparison to Teensy 3.1

Some features of Teensy 3.1 simply aren't available at this lower price point.

  • The I/O pins are not 5V tolerant.
  • The maximum speed is only 48 MHz, and the Cortex-M0+ omits M4's special math instructions.
  • CAN bus is not available.
  • Teensy-LC has only 4 lightweight DMA channels, rather than 16 fully featured channels.
  • Serial1 & Serial2 have only standard buffers, not FIFOs.
  • Fewer hardware timers are available.

Technical Specifications:

FeatureTeensy LCTeensy 3.1Units
Processor
    Core
    Rated Speed
    Overclockable
MKL26Z64VFT4
Cortex-M0+
48
-
MK20DX256VLH7
Cortex-M4
72
96


MHz
MHz
Flash Memory
    Bandwidth
    Cache
62
96
64
256
192
256
kbytes
Mbytes/sec
Bytes
RAM 8 64 kbytes
EEPROM 1/8 (emu) 2 kbytes
Direct Memory Access 4 16 Channels
Digital I/O
    Voltage Output
    Current Output
    Voltage Input
27
3.3V + one 5V
5mA + four 20mA
3.3V Only
34
3.3V
10mA
5V Tolerant
Pins
Volts
milliAmps
Volts
Analog Input
    Converters
        Resolution
            Usable
        Prog Gain Amp
    Touch Sensing
    Comparators
13
1
16
12
0
11
1
21
2
16
13
2
12
3
Pins

Bits
Bits

Pins

Analog Output
    DAC Resolution
1
12
1
12
Pins
Bits
Timers
    FTM Type
        PWM Outputs
    PDB Type
    CMT (infrared) Type
    LPTMR Type
    PIT (interval) Type
    Systick
    RTC (date/time) **
7 Total
3
10
0
0
1
2
1
0
12 Total
3
12
1
1
1
4
1
1


Pins
Communication
    USB
    Serial
        With FIFOs
        High Res Baud
        Fast Clock
    SPI
        With FIFOs
    I2C
    CAN Bus
    I2S Audio
        FIFO Size

1
3
0
0
1
2
1
2
0
1
4

1
3
2
3
2
1
1
2
1
1
8
** RTC requires a 32.768 kHz crystal & 3V battery. See the Time Library for details.
      Teensy-LC has RTC logic on-chip, but lacks the oscillator & battery backup power.

Pinouts:

Teensy-LC is designed for maximum compatibility with the Teensy 3.1 footprint.
Teensy-LCTeensy 3.1

More Than Just Hardware

Teensy is much more than merely hardware. Teensy represents PJRC's ongoing commitment to developing more hardware powerful together with easy-to-use software support for microcontroller programming. Sales of Teensy fund substantial engineering work to develop and support open source software.

A good portion of the engineering time PJRC invests is used to contribute improvements and bug fixes to Arduino.

Teensy-LC and Teensy 3.1 are made in the USA.

Documents:

This product was added to our catalog on Wednesday 18 March, 2015.
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