AT90USB647-16MU Atmel, AT90USB647-16MU Datasheet - Page 28

• Manufacturer Part Number: AT90USB647-16MU
• Description: Microcontrollers (MCU) AVR USB OTG 64K FLASH IND 5V
• Manufacturer: Atmel

Specifications of AT90USB647-16MU

• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 64 KB
• Data Ram Size: 4 KB
• Interface Type: 2-Wire, SPI, USART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 48
• Number Of Timers: 4
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-64
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Lead Free Status / Rohs Status: Details
• Other names: AT90USB647-MU

If the CPU core is in sleep and wakes-up from an asynchronous timer interrupt and then go
back in sleep mode again it may wake up several times.
Problem Fix/workaround
A s o ft wa r e wo r k ar o un d i s to w ai t wi t h pe r fo r mi n g th e s l ee p i n st r uc t io n u nt i l
TCNT2>OCR2+1.
AT90USB64/128
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7593GS–AVR–03/08