AT43USB326-AC Atmel, AT43USB326-AC Datasheet - Page 82

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

Specifications of AT43USB326-AC

• 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: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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AT43USB326
Table 23. Hub Event Timings
Symbol
TDCNN
TDDIS
TURSM
TDRST
TDSPDEV
TURLK
TURLSEO
TURPSEO
TUDEOP
Time to detect a
downstream port connect
event
disconnect event on
downstream port
Awake Hub
Suspended Hub
Time from detecting
downstream resume to
rebroadcast
Duration of driving reset to
a downstream device
Time to evaluate device
speed after reset
Time to detect a long K
from upstream
Time to detect a long SEO
from upstream
Duration of repeating SEO
upstream
Duration of sending SEO
upstream after EOF1
Parameter
Time to detect a
Condition
Only for a SetPortFeature
(PORT_RESET) request
Min
2.5
2.5
2.5
10
2.5
2.5
2.5
Max
2000
2000
12000
100
20
1000
5.5
5.5
23
2
3313D–USB–04/06
Unit
µs
µs
µs
µs
µs
µs
µs
FS
bits
FS
bits