AT43USB325E-AU Atmel, AT43USB325E-AU Datasheet - Page 96

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

Specifications of AT43USB325E-AU

• 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: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9. Electrical Specification
9.1
9.2
96
Absolute Maximum Ratings
DC Characteristics
AT43USB325
Stresses beyond those listed below may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these or any other conditions beyond
those indicated in the operational sections of this specification is not implied. Exposure to abso-
lute maximum rating conditions for extended periods may affect device reliability.
Table 9-1.
Note:
The values shown in this table are valid for TA = 0 C to 85 C, VCC = 4.4 to 5.25V, unless other-
wise noted.
Table 9-2.
Table 9-3.
Symbol
V
VI
VO
TO
TS
Symbol
V
I
I
Symbol
V
V
V
V
V
V
V
V
V
CC
CCS
CC5
CC
IH
IHZ
IL
DI
CM
OL1
OH1
CRS
IN
VCEXT is the voltage at CEXT1, CEXT2.
Parameter
Input Level High (driven)
Input Level High (floating)
Input Level Low
Differential Input Sensitivity
Differential Common Mode
Range
Static Output Low
Static Output High
Output Signal Crossover
Input Capacitance
Parameter
5V Power Supply
DC input voltage
DC output voltage
Operating temperature
Storage temperature
Parameter
5V Power Supply
5V Supply Current
Suspended Device Current
Absolute Maximum Ratings
Power Supply
USB Signals: DPx, DMx
Condition
DPx and DMx
RL of 1.5 k
RL of 15 k
Condition
Condition
to GND
to 3.6V
-0.3V
Min
Min
-0.3
4.4
-40
-65
Min
2.0
2.7
0.2
0.8
2.8
1.3
VCEXT+0.3
VCEXT+0.3
4.6 max
4.6 max
+125
+150
Max
5.25
Max
600
5.5
40
Max
0.8
2.5
0.3
3.6
2.0
20
3355C–USB–4/05
Unit
Unit
mA
uA
V
V
V
V
C
C
Unit
pF
V
V
V
V
V
V
V
V