Freescale Semiconductor MC68HC08KH12 - Manual (Page 254)

Advance Information MC68HC(7)08KH12 — Rev. 1.1
254 Freescale Semiconductor
17.11 USB High Speed Source Electrical Characteristics
Characteristic Symbol
Conditions
(Notes 1,2,3)
Min Typ Max Unit
Transition time:
Rise Time
Fall Time
T
R
T
F
Notes 4,5,8
C
L
=50pF
C
L
=50pF
4
4
20
20
ns
ns
Rise/Fall Time Matching T
RFM
T
R
/T
F
90 110 %
Output Signal Crossover
Voltage
V
CRS
1.3 2.0 V
High Speed Data Rate T
DRATE
12Mbs
±
0.25% 11.97 12.03
Mbs
ns
Frame Interval T
FRAME
1.0ms
±
0.05% 0.9995 1.0005 ms
Source Differential Driver Jitter
To Next Transition
For Paired Transitions T
DJ1
T
DJ1
C
L
=50pF
Notes 6, 7
–3.5
–4.0 3.5
4.0 ns
ns
Source EOP Width TEOPT Note 7 160 175 ns
Differential to EOP Transition
Skew
TDEOP Note 7 –2 5 ns
Receive Data Jitter Tolerance
To Next Transition
For Paired Transitions T
JR1
T
JR2
C
L
=50pF
Notes 6, 7
–18.5
–9
18.5
9
ns
ns
Receiver EOP Width
Must Reject as EOP
Must Accept T
EOPR1
T
EOPR2
Note 7 40
82 ns
ns
NOTES:
1. All voltages measured from local ground, unless otherwise specified.
2. All timings use a capacitive load of 50pF, unless otherwise specified.
3. High speed timings have a 1.5k
Ω
pull-up to 2.8V on the D+ data line.
4. Measured from 10% to 90% of the data signal.
5. The rising and falling edges should be smoothly transitioning (monotonic).
6. Timing differences between the differential data signals.
7. Measured at crossover point of differential data signals.
8. Capacitive loading includes 50pF of tester capacitance.