Key facts
- Brand
- Atmel
- Model
- AT90USB647
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-05-04
Start here
ATMEL AT90USB646/AT90USB647/AT90USB1286/AT90USB1287
The AT90USB64/128 is a low‑power 8‑bit AVR microcontroller featuring 64 KB or 128 KB of In‑System Self‑Programmable Flash, up to 8 KB of SRAM, and a rich set of peripherals including USB 2.0 full‑speed/low‑speed, multiple timers, PWM channels, ADC and serial interfaces. It operates from 2.7 V to 5.5 V and supports industrial temperature ranges.
The device includes a 48 MHz PLL for USB operation, six programmable USB endpoints, and extensive on‑chip debug support via JTAG. Detailed pin‑out diagrams, port descriptions, and power‑management modes are provided for hardware designers.
Atmel AT90USB647 specifications
| Flash memory | 64 KB or 128 KB |
|---|---|
| EEPROM | 2 KB or 4 KB |
| SRAM | 4 KB or 8 KB |
| Programmable I/O lines | 48 |
| 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) / 1.5 Mbit/s (low‑speed) |
| USB endpoints | 6 programmable endpoints (up to 256 bytes each) |
| PLL for USB | 48 MHz |
All Atmel AT90USB647 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What flash memory sizes are available?
The device offers either 64 KB or 128 KB of In‑System Self‑Programmable Flash.
What is the operating voltage range?
It operates from 2.7 V up to 5.5 V.
What is the operating voltage range of the ATmega32U6/AT90USB64/128?
The devices operate from 2.7 V to 5.5 V.
From: ATMEL Atmel USB micro controller AT90USB647 handbook (1)
What USB data rates are supported?
The microcontrollers support USB full‑speed at 12 Mbit/s and low‑speed at 1.5 Mbit/s.
From: ATMEL Atmel USB micro controller AT90USB647 handbook (1)
What is the operating voltage range of the ATmega32U6/AT90USB64/128?
It operates from 2.7 V to 5.5 V.
From: ATMEL Atmel USB micro controller AT90USB647 handbook (1)(1)
What temperature range can the device operate in?
It is rated for industrial temperatures from –40 °C to +85 °C.
From: ATMEL Atmel USB micro controller AT90USB647 handbook (1)(1)