atmel at90usb1287 is a 8-bit avr microcontroller manufactured by atmel company, which has high performance and low power consumption
The ATmega32U6/AT90USB64/128 family is a low‑power CMOS 8‑bit microcontroller based on the AVR enhanced RISC architecture. It offers high‑performance instruction execution, multiple power‑saving modes, and integrated USB 2.0 full‑speed/low‑speed device and OTG functionality.
The device includes up to 128 KB of flash, up to 8 KB of SRAM, a rich set of peripherals (timers, ADC, USART, SPI, JTAG), and 48 programmable I/O lines. It is supplied in 64‑lead TQFP and QFN packages and operates from 2.7 V to 5.5 V in an industrial temperature range.
| Flash memory | 32 KB / 64 KB / 128 KB |
|---|---|
| EEPROM | 1 KB / 2 KB / 4 KB |
| SRAM | 2.5 KB / 4 KB / 8 KB |
| Operating voltage | 2.7 V – 5.5 V |
| Operating temperature | -40 °C to +85 °C (Industrial) |
| Maximum CPU frequency | 8 MHz at 2.7 V, 16 MHz at 4.5 V |
| USB data rates | 12 Mbit/s (Full‑speed) and 1.5 Mbit/s (Low‑speed) |
| Package options | 64‑lead TQFP and 64‑lead QFN |
It operates from 2.7 V to 5.5 V.
It is rated for industrial temperatures from –40 °C to +85 °C.
It supports USB full‑speed (12 Mbit/s) and low‑speed (1.5 Mbit/s).