AT43USB326-AU Atmel, AT43USB326-AU Datasheet - Page 51
![IC USB KEYBOARD CTRLR 48LQFP](/photos/6/76/67647/453-48-lqfp_sml.jpg)
AT43USB326-AU
Manufacturer Part Number
AT43USB326-AU
Description
IC USB KEYBOARD CTRLR 48LQFP
Manufacturer
Atmel
Series
AVR®r
Datasheet
1.AT43USB326-AC.pdf
(102 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 51 of 102
- Download datasheet (2Mb)
Control Write Status
Response State
3313D–USB–04/06
The Function Interface Unit receives an IN token from the Host. The FIU responds with a zero
length DATA1 packet, retrying until it receives an ACK back from the Host. The FIU then
asserts a TX_COMPLETE interrupt.
1. IN token from Host
2. Send Data1(0)
3. ACK from Host
4. Set TX Complete → INT
Hardware
5. Read UISR
6. Read CSR0
7. Clear TX COMPLETE, clear Data
8. Set UIAR[EP0 INTACK] to clear the
End, set Force STALL in CAR0
interrupt source
Firmware
AT43USB326
51
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