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The Atmel AVR instruction set is the machine language for the Atmel AVR, a modified Harvard architecture 8-bit RISC single chip microcontroller which was developed by Atmel in 1996. The AVR was one of the first microcontroller families to use on-chip flash memory for program storage.
Up to 4 pins may be required for implementing a JTAG standard interface. In general, modern protocols try to keep the number of pins used low, typically to 2 pins. Some ISP interfaces manage to achieve the same with just a single pin. Newer ATtiny microcontrollers with UPDI can even reuse that programming pin also as a general-purpose input ...
It has the basic Atmel AVR instruction set. One of the packaging configurations is the dual in-line package . It has 23 I/O pins and operates at up to 20 MHz for clock speed. It has an 8-bit core and 8K flash (program) memory. [1]
Among the first of the AVR line was the AT90S8515, which in a 40-pin DIP package has the same pinout as an 8051 microcontroller, including the external multiplexed address and data bus. The polarity of the RESET line was opposite (8051's having an active-high RESET, while the AVR has an active-low RESET ), but other than that the pinout was ...
ATtiny (also known as TinyAVR) is a subfamily of the popular 8-bit AVR microcontrollers, which typically has fewer features, fewer I/O pins, and less memory than other AVR series chips. The first members of this family were released in 1999 by Atmel (later acquired by Microchip Technology in 2016).
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.
1 4-digit counter/display driver 16 MM74C925: 74x926 1 4-digit decade counter/display driver, carry out and latch (up to 9999) 16 MM74C926: 74x927 1 4-digit timer counter/display driver (up to 9599, intended as time elapsed, i.e. 9:59.9 min) 16 MM74C927: 74x928 1 4-digit counter/display driver (up to 1999) 16 MM74C928: 74x929 1
61.5 mm × 25 mm [ 2.4 in × 1.0 in ] USB 3.3 V 256 No 32 8 12 7 1 Announced: April 2, 2016: Arduino MKR Zero [6] ATSAMD21G18A 48 MHz minimal 61.5 mm × 25 mm [ 2.4 in × 1.0 in ] USB 3.3 V 256 No 32 Arduino 101 [7] Genuino 101: Intel Curie™ module [8] two tiny cores, an x86 and an ARC 32 MHz Arduino / Genuino