AT43301_05 Datasheet, PDF (13/27 Pages) ATMEL Corporation – Low-cost USB Hub Controller

AT43301
Table 3-3.
Symbol
V_OL2
C_OUT
V_IL3
V_IH3
C_OUT
V_OH2
PWR, STAT, OVC
Parameter
Output Low Level, PWR, STAT
Output Capacitance
Input Low Level
Input High Level
Output Capacitance
Output High Level, PWR
Condition
I_OL = 4 mA
1 MHz
1 MHz
I_OH = 4 mA
Min
0.7V_CEXT
V_CEXT - 0.5
Max
0.5
10
0.3V_CEXT
10
Unit
V
pF
V
V
pF
V
Table 3-4. Oscillator Signals: OSC1, OSC2
Symbol Parameter
Condition
V_LH
OSC1 Switching Level
V_HL
OSC1 Switching Level
C_X1
Input Capacitance, OSC1
C_X2
Output Capacitance, OSC2
C₁₂
OSC1/2 Capacitance
tsu
Start-up Time
6 MHz, fundamental
D_L
Drive Level
V_CC = 3.3V, 6 MHz crystal, 100Ω equiv series resistor
Note: OSC2 must not be used to drive other circuitry.
3.3 AC Characteristics
Table 3-5. DPx, DMx Driver Characteristics, Full Speed Operation
Symbol Parameter
Condition
t_R
t_F
t_RFM
Z_DRV
Note:
Rise Time
Fall Time
t_R/t_F Matching
Driver Output Resistance⁽¹⁾
C_L = 50 pF
C_L = 50 pF
Steady state drive
1. With external 22Ω series resistor.
Min
Max Unit
0.47
1.20
V
0.67
1.44
V
17
pF
17
pF
1
pF
2
ms
150 µW
Min
Max Unit
4
20
ns
4
20
ns
90
110
%
28
44
Ω
13
1137J–USB–01/06