AT43USB326-AU Atmel, AT43USB326-AU Datasheet - Page 101

• Manufacturer Part Number: AT43USB326-AU
• Description: IC USB KEYBOARD CTRLR 48LQFP
• Manufacturer: Atmel
• Series: AVR®r

Specifications of AT43USB326-AU

• Applications: Keyboard Controller
• Core Processor: AVR
• Program Memory Type: Mask ROM (16 kB)
• Controller Series: AT43USB
• Ram Size: 512 x 8
• Interface: USB
• Number Of I /o: 32
• Voltage - Supply: 4.4 V ~ 5.25 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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AT43USB326
Programming the USB Module......................................................... 46
Electrical Specification ..................................................................... 76
Typical Application............................................................................ 84
Ordering Information......................................................................... 96
Packaging Information ...................................................................... 97
Errata Sheet........................................................................................ 98
Revision History ................................................................................ 99
Table of Contents ................................................................................. i
Port E.................................................................................................................. 45
The USB Function .............................................................................................. 46
USB Registers .................................................................................................... 53
Endpoint Registers ............................................................................................. 54
USB Hub............................................................................................................. 62
Suspend and Resume ........................................................................................ 72
Absolute Maximum Ratings ................................................................................ 76
DC Characteristics.............................................................................................. 76
Detailed Description............................................................................................ 84
Initial Check Byte ................................................................................................ 85
Keyboard Matrix.................................................................................................. 85
Example of SEEPROM Data .............................................................................. 85
Example Schematics .......................................................................................... 94
48AA – LQFP ..................................................................................................... 97
Problem .............................................................................................................. 98
Fix/Workaround .................................................................................................. 98
3313D–USB–04/06