AT90USB647-MU Atmel, AT90USB647-MU Datasheet - Page 404

• 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

30.8
404
Hardware Boot EntranceTiming Characteristics
AT90USB64/128
Figure 30-5. SPI Interface Timing Requirements (Slave Mode)
Figure 30-6. Hardware Boot Timing Requirements
Table 30-4.
Symbol
tSHRH
tHHRH
(Data Output)
(Data Input)
(CPOL = 0)
(CPOL = 1)
MOSI
MISO
Parameter
HWB low Setup before Reset High
HWB low Hold after Reset High
SCK
SCK
SS
ALE/HWB
Hardware Boot Timings
RESET
9
13
MSB
MSB
14
15
t
SHRH
...
...
StartUpTime(
Delay(TOUT)
SUT) + Time
Out
Min
0
11
10
t
HHRH
LSB
LSB
11
Max
12
16
7593K–AVR–11/09
X
17