AT90USB646-AU Atmel, AT90USB646-AU Datasheet - Page 290
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AT90USB646-AU
Manufacturer Part Number
AT90USB646-AU
Description
MCU AVR 64K FLASH 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® 90USBr
Specifications of AT90USB646-AU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART, USB, USB OTG
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
48
Program Memory Size
64KB (64K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
Controller Family/series
AVR USB
No. Of I/o's
48
Eeprom Memory Size
2KB
Ram Memory Size
4KB
Cpu Speed
20MHz
Rohs Compliant
Yes
Processor Series
AT90USBx
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
2-Wire, SPI, USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
48
Number Of Timers
4
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATSTK525, ATAVRISP2, ATAVRONEKIT, AT90USBKEY, ATEVK525
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Package
64TQFP
Device Core
AVR
Family Name
AT90
Maximum Speed
20 MHz
Operating Supply Voltage
3.3|5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT90USB646-AU
Manufacturer:
MOT
Quantity:
1 100
Part Number:
AT90USB646-AU
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
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23. USB Host Operating Modes
23.1
23.2
23.3
290
Pipe description
Detach
Power-on and Reset
AT90USB64/128
This mode is available only on AT90USB647/1287 products.
For the USB Host controller, the term of Pipe is used instead of Endpoint for the USB Device
controller. A Host Pipe corresponds to a Device Endpoint, as described in the USB specification:
Figure 23-1. Pipes and Endpoints in a USB system
In the USB Host controller, a Pipe will be associated to a Device Endpoint, considering the
Device Configuration Descriptors.
The reset value of the DETACH bit is 1. Thus, the firmware has the responsibility of clearing this
bit before switching to the Host mode (HOST set).
The next diagram explains the USB host controller main states on power-on:
Figure 23-2. USB host controller states after reset
Clock stopped
Ready
Host
Device
connection
Macro off
Device
disconnection
SOFE=1
SOFE=0
Host
Idle
Suspend
Device
disconnection
Host
state>
<any
other
7593K–AVR–11/09
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