AT43USB325E-AC Atmel, AT43USB325E-AC Datasheet - Page 101

• Manufacturer Part Number: AT43USB325E-AC
• Description: IC USB KEYBOARD CTRLR HUB 64LQFP
• Manufacturer: Atmel
• Series: AVR®r

Specifications of AT43USB325E-AC

• Applications: Keyboard Controller
• Core Processor: AVR
• Program Memory Type: SRAM (16 kB)
• Controller Series: AT43USB
• Ram Size: 512 x 8
• Interface: SPI, 3-Wire Serial
• Number Of I /o: 42
• Voltage - Supply: 4.4 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

3355C–USB–4/05
Table 9-10.
Table 9-11.
Table 9-12.
Symbol
THDD2
THDJ1
THDJ2
TFSOP
TFEOPD
TFHESK
Symbol
TDCNN
TDDIS
TURSM
TDRST
TDSPDEV
TURLK
TURLSEO
TURPSEO
TUDEOP
TLEOPD
TLHESK
Symbol
TLHDJ1
TLHDJ2
TLUHJ1
TLUHJ2
TLHDD
TSOP
Parameter
Time to detect a downstream port
connect event
Time to detect a 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
Hub Timings, Full-speed Operation
Parameter
Hub Differential Data Delay without cable
Hub Diff Driver Jitter to Next Transition for
Paired Transitions
Data Bit Width Distortion after SOP
Hub EOP Delay Relative to THDD
Hub EOP Output Width Skew
Hub Timings, Low-speed Operation
Parameter
Hub Differential Data Delay
Downstr Hub Diff Driver Jitter to Next
Transition, downst for Paired Transitions,
downst to Next Transition, upstr for Paired
Transitions, upstr
Data Bit Width Distortion after SOP
Hub EOP Delay Relative to THDD
Hub EOP Output Width Skew
Hub Event Timings
Condition
Only for a SetPortFeature
(PORT_RESET) request
Condition
Condition
AT43USB325
-300
Min
Min
-15
-45
-15
-45
-45
-60
-3
-1
-5
0
0
Min
2.5
2.5
2.5
10
2.5
2.5
2.5
Max
Max
300
200
300
44
15
15
45
15
45
45
60
Max
2000
2000
12000
100
20
1000
5.5
5.5
23
2
3
1
5
Unit
Unit
Unit
µs
µs
µs
µs
µs
µs
µs
FS
bits
FS
bits
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
101