AT43USB326-AC Atmel, AT43USB326-AC Datasheet - Page 80

• 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
Figure 15. Differential Data Jitter
Figure 16. Differential-to-EOP Transition Skew and EOP Width
Figure 17. Receiver Jitter Tolerance
Differential
Data Lines
T
PERIOD
Differential
Data Lines
T
Differential
Data Lines
PERIOD
T
PERIOD
N*T
PERIOD
Diff. Data-to-
SE0 Skew
N*T
+ T
Crossover
Consecutive
N*T
Transitions
PERIOD
DEOP
Points
Consecutive
Transitions
N*T
PERIOD
T
JR
Transitions
PERIOD
+ T
Crossover
Extended
Paired
N*T
XJR1
+ T
Point
Consecutive
Transitions
PERIOD
JR1
+ T
XJR2
+ T
T
JR1
Source EOP Width:
Receiver EOP Width:
JR1
T
JR2
T FEOPT
T
LEOPT
T FEOPR
T
LEOPR
3313D–USB–04/06