AT43USB326-AU Atmel, AT43USB326-AU Datasheet - Page 75

• 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

Selective Suspend,
Downstream Ports
Selective Suspend,
Embedded Function
Selective Resume,
Embedded Function
3313D–USB–04/06
3. Suspend or resume port per
6. Send updated port status at next
command
IN to endpoint1
Hardware
Hardware
Hardware
1. Set or Clear Port Feature
2. Write HPCON[2:0] and HPADD[2:0]
1. Set Port Feature PORT_SUSPEND
2. Disable Port 1’s endpoints
3. Set GPIO to low power state if required
1. Clear Port Feature PORT_SUSPEND
2. Clear Port 1 suspend status bit
3. Restore GPIO states if required
4. Wait 23 ms, then set enable status bit
5. Enable Port 1 endpoints
PORT_SUSPEND decoded
bits
decoded
decoded
and suspend change bit
Firmware
Firmware
Firmware
AT43USB326
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