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AT43USB325 Datasheet(PDF) 97 Page - ATMEL Corporation

Part # AT43USB325
Description  Multimedia USB Keyboard Controller with Embedded Hub
PDF  109 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT43USB325 Datasheet(HTML) 97 Page - ATMEL Corporation

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97
3355C–USB–4/05
AT43USB325
Note:
VCEXT is the voltage at CEXT1, CEXT2.
Note:
XTAL2 must not be used to drive other circuitry.
9.2.1
AC Characteristics
Table 9-4.
PA, PB, PC, PD, PE, PF
Symbol
Parameter
Condition
Min
Max
Unit
V
OL2
Output Low Level, PA, PB,
PE[0:3]
IOL = 4 mA
0.5
V
RPU
PC Pull-up resistor current
V = 0
90
280
µA
VIL3
Input Low Level, PC
0.3 VCEXT
V
VIH3
Input High Level, PC
0.7 VCEXT
V
V
IL4
Input Low Level, PD[0,1]
0.3 VCEXT
V
VIH4
Input High Level, PD[0,1]
0.7 VCEXT
V
VOL4
Output Low Level, PD[0,1]
IOL = 4 mA
0.3 VCEXT
V
V
OH4
Output High Level, PD[0,1]
IOH = 4 mA
0.7 VCEXT
V
C
Input/Output capacitance
1 MHz
10
pF
Table 9-5.
Oscillator Signals: XTAL1, XTAL2
Symbol
Parameter
Condition
Min
Max
Unit
VLH
OSC1 switching level
0.47
1.20
V
V
HL
OSC1 switching level
0.67
1.44
V
CX1
Input capacitance, XTAL1
10
pF
CX2
Output capacitance, XTAL2
10
pF
C12
OSC1/2 capacitance
5
pF
tSU
Start-up time
6 MHz, fundamental
2
ms
DL
Drive level
50
µW
Table 9-6.
SEEPROM SPI Timing
Symbol
Parameter
Condition
Min
Max
Unit
f
SCK
SCK Clock Frequency 50% duty cycle
333
333
ns
t
RO, tFO
Output Rise Time, Fall Time
10
10
ns
-5
5
ns
t
CSS
SSN Setup Time
0
20
ns
tCSH
SSN Hold Time
0
20
ns
t
SU
Data IN Setup Time
10
ns
t
H
Data In Hold Time
2
ns
tHO
Output Hold Time
0
ns
t
V
Output Valid
10
ns



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