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This is a list of interface bit rates, is a measure of information transfer rates, or digital bandwidth capacity, at which digital interfaces in a computer or network can communicate over various kinds of buses and channels. The distinction can be arbitrary between a computer bus, often closer in space, and larger telecommunications networks.
Quad SPI (QSPI; different to but has same abbreviation as Queued-SPI described in § Intelligent SPI controllers) goes beyond dual SPI, adding two more I/O lines (SIO2 and SIO3) and sends 4 data bits per clock cycle. Again, it is requested by special commands, which enable quad mode after the command itself is sent in single mode.
The Teensy 4.0 has an NXP i.MXRT1062 ARM Cortex-M7 at 600 MHz with 1024 KB RAM (512 KB is tightly coupled), 2048 KB flash (64K reserved for recovery & EEPROM emulation), two USB ports, both 480 Mbit/s, three CAN bus channels (one with CAN FD), two I²S Digital Audio, 1 S/PDIF Digital Audio, 1 SDIO (4 bit) native SD, SPI, all with 16 word FIFO ...
The board has 14 digital I/O pins (six capable of PWM output), 6 analog I/O pins, and is programmable with the Arduino IDE (Integrated Development Environment), via a type B USB cable. [4] It can be powered by a USB cable or a barrel connector that accepts voltages between 7 and 20 volts, such as a rectangular 9-volt battery .
The RX and TX LEDs on the board flash when data is being transmitted via the FTDI chip and the USB connection to the computer (but not for serial communication on pins 0 and 1). A SoftwareSerial library allows for serial communication on any of the Nano's digital pins. The ATmega328 also supports I2C and SPI communication.
ATmega328 is commonly used in many projects and autonomous systems where a simple, low-powered, low-cost micro-controller is needed. Perhaps the most common implementation of this chip is on the popular Arduino development platform, namely the Arduino Uno, Arduino Pro Mini [4] and Arduino Nano models.
The original FPD-Link designed for 18-bit RGB video has 3 parallel data pairs and a clock pair, so this is a parallel communication scheme. However, each of the 3 pairs transfers 7 serialized bits during each clock cycle. So the FPD-Link parallel pairs are carrying serialized data, but use a parallel clock to recover and synchronize the data.
Fixed SPI behaviour on Ethernet chip, D13 pin isolated with a MOSFET of which can also be used as an input. EtherMega [114] Freetronics ATmega2560 [25] 16 MHz Fixed SPI behaviour on Ethernet chip, Micro SD card slot, D13 pin isolated with a MOSFET of which can also be used as an input. USBDroid [115] Freetronics ATmega328P 16 MHz
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