AT90USB647-MU Atmel, AT90USB647-MU Datasheet - Page 22

• Manufacturer Part Number: AT90USB647-MU
• Description: MCU, 8BIT, 64K FLASH, USB, 64QFN
• Manufacturer: Atmel

Specifications of AT90USB647-MU

• Controller Family/series: AT90
• No. Of I/o's: 48
• Eeprom Memory Size: 2KB
• Ram Memory Size: 4KB
• Cpu Speed: 16MHz
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 64KB
• Oscillator Type: External, Internal
• Package: 64QFN EP
• Device Core: AVR
• Family Name: AT90
• Maximum Speed: 20 MHz
• Ram Size: 4 KB
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 8 Bit
• Program Memory Type: Flash
• Number Of Programmable I/os: 48
• Interface Type: SPI/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Operating Temperature: -40 to 85 °C
• Number Of Timers: 4
• Lead Free Status / Rohs Status: Details

5.2.1
22
AT90USB64/128
Data Memory Access Times
Figure 5-2.
This section describes the general access timing concepts for internal memory access. The
internal data SRAM access is performed in two clk
Data Memory Map
64 I/O
160 E xt I/O
D ata M emory
E xternal S RAM
(0 - 64K x 8)
I nternal S RAM
32 R egisters
(8192 x 8)
R egisters
R eg .
CPU
cycles as described in
$FFFF
$0000 - $001F
$0020 - $005F
$0060 - $00FF
ISRAM start
ISRAM end
XMem start
Figure
7593K–AVR–11/09
5-3.