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MPN:TEENSY40
RAM Size:1GB
Series:Teensy
Platform:Arduino
Country/Region of Manufacture:United States
Program Memory Type:Flash
Teensy 4.0:Teensy 4.0
PJRC:PJRC
Core:ARM
Type:General Embedded Development Board
Note: The Teensy 4.0 does not include headers and, if needed in your application, will need to be purchased separately and soldered on yourself.The NXP iMXRT1062 is a ‘cross-over’ processor, which has the functionality of a microcontroller at the speeds of a microcomputer. It’s perfect for when you need lots of flash, RAM, to crunch lots of data, or when you need two full speed USB ports. It even has a built-in graphics processor!Teensy 4.0 provides support for dynamic clock scaling. Unlike traditional microcontrollers, where changing the clock speed causes wrong baud rates and other issues, Teensy 4.0 hardware and Teensyduino’s software support for Arduino timing functions are designed to allow dynamic speed changes. Serial baud rates, audio streaming sample rates, and Arduino functions like delay() and millis(), and Teensyduino’s extensions like IntervalTimer and elapsedMillis, continue to work properly while the CPU changes speed.Teensy 4.0 also provides a power shut off feature. By connecting a pushbutton to the On/Off pin, the 3.3V power supply can be completely disabled by holding the button for 5 seconds, and turned back on by a brief button press. If a coin cell is connected to VBAT, Teensy 4.0’s RTC also continues to keep track of date & time while the power is off.The ARM Cortex-M7 brings many powerful CPU features to a true real-time microcontroller platform. Cortex-M7 is a dual-issue superscaler processor, meaning the M7 can execute two instructions per clock cycle, at 600MHz (Teensy 4.0 can be overclocked to well beyond 600MHz)! Cortex-M7 is the first ARM microcontroller to use branch prediction. On M4, loops and other code which must branch take three clock cycles. With M7, after a loop has executed a few times, the branch prediction removes that overhead, allowing the branch instruction to run in only a single clock cycle.Tightly Coupled Memory is a special feature that allows Cortex-M7 fast single-cycle access to memory using a pair of 64 bit wide buses. The ITCM bus provides a 64-bit path to fetch instructions. The DTCM bus is actually a pair of 32-bit paths, allowing M7 to perform up to 2 separate memory accesses in the same cycle. These extremely high-speed buses are separate from M7’s main AXI bus, which accesses other memory and peripherals. 512K of memory can be accessed as tightly coupled memory. Teensyduino automatically allocates your Arduino sketch code into ITCM and all non-malloc memory use to the fast DTCM, unless you add extra keywords to override the optimized default. Memory not accessed on the tightly coupled buses is optimized for DMA access by peripherals. Because the bulk of M7’s memory access is done on the 2 tightly coupled buses, powerful DMA-based peripherals have excellent access to the non-TCM memory for highly efficient I/O.Teensy 4.0’s Cortex-M7 processor includes a floating-point unit (FPU) which supports both 64 bit “double” and 32 bit “float”. With M4’s FPU on Teensy 3.5 & 3.6, and also Atmel SAMD51 chips, only 32 bit float is hardware accelerated. Any use of double, double functions like log(), sin(), cos() means slow software implemented math. Teensy 4.0 executes all of these with FPU hardware.Technical Specifications:ARM Cortex-M7 at 600 MHz1024K RAM (512K is tightly coupled)2048K Flash (64K reserved for recovery & EEPROM emulation)2 USB ports, both 480 MBit/sec3 CAN Bus (1 with CAN FD)2 I2S Digital Audio1 S/PDIF Digital Audio1 SDIO (4 bit) native SD3 SPI, all with 16 word FIFO3 I2C, all with 4 byte FIFO7 Serial, all with 4 byte FIFO32 general-purpose DMA channels31 PWM pins40 digital pins, all interrupt capable14 analog pins, 2 ADCs on chipCryptographic AccelerationRandom Number GeneratorRTC for date/timeProgrammable FlexIOPixel Processing PipelinePeripheral cross triggeringPower On/Off managementPackage Includes: 1X PJRC Teensy 4.0 Microcontroller Development Board without pins, printed pinout, or usage reference card
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