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Section 25 Electrical Characteristics
Rev. 4.00 Sep. 14, 2005 Page 963 of 982
REJ09B0023-0400
25.3.14 USB Transceiver Timing
Table 25.15 USB Transceiver Timing
Conditions: V
CC
= 1.8 V
±
5%, V
CC
Q = 3.0 V to 3.6 V, AV
CC
= 3.0 V to 3.6 V, V
SS
= V
SS
Q = AV
SS
= 0 V, Ta =
−
40°C to
+
85°C
Item Symbol
Min.
Typ.
Max.
Unit
Test
Conditions
Rising time
t
R
4
20 ns C
L
= 50pF
Falling time
t
F
4 — 20
ns
C
L
= 50pF
Rising/falling time ratio
t
R
/t
F
90 — 110 %
Output crossover voltage V
CRS
1.3 — 2.0 V
C
L
= 50pF
Output driver resistance Z
DRU
28
44
Ω
Notes: 1. Transceivers conform to the full-speed specification.
2. The resistance includes the value of the externally connected resistor
(RS = 27
Ω
±
1%).
t
R
, t
F
90%
10%
DP
Crossover voltage
1. The Values of t
R
and t
F
are measured at 10% and 90% of amplitude.
2. The capacitance (C
L
) includes stray capacitance of writing connection and
probe input capacitance.
Notes:
DM
VccQ
DP
DM
VssQ
R
L
= 27
Ω
C
L
C
L
R
L
= 27
Ω
Device to be
measured
Measurement circuit
Summary of Contents for HD6417641
Page 2: ...Rev 4 00 Sep 14 2005 Page ii of l...
Page 7: ...Rev 4 00 Sep 14 2005 Page vii of l...
Page 11: ...Rev 4 00 Sep 14 2005 Page xi of l USB Universal serial bus WDT Watch dog timer...
Page 12: ...Rev 4 00 Sep 14 2005 Page xii of l...
Page 28: ...Rev 4 00 Sep 14 2005 Page xxviii of l...
Page 204: ...Section 4 Clock Pulse Generator CPG Rev 4 00 Sep 14 2005 Page 154 of 982 REJ09B0023 0400...
Page 212: ...Section 5 Watchdog Timer WDT Rev 4 00 Sep 14 2005 Page 162 of 982 REJ09B0023 0400...
Page 228: ...Section 6 Power Down Modes Rev 4 00 Sep 14 2005 Page 178 of 982 REJ09B0023 0400...
Page 246: ...Section 8 X Y Memory Rev 4 00 Sep 14 2005 Page 196 of 982 REJ09B0023 0400...
Page 318: ...Section 11 User Break Controller UBC Rev 4 00 Sep 14 2005 Page 268 of 982 REJ09B0023 0400...
Page 454: ...Section 12 Bus State Controller BSC Rev 4 00 Sep 14 2005 Page 404 of 982 REJ09B0023 0400...
Page 504: ...Section 14 U Memory Rev 4 00 Sep 14 2005 Page 454 of 982 REJ09B0023 0400...
Page 566: ...Section 17 Compare Match Timer CMT Rev 4 00 Sep 14 2005 Page 516 of 982 REJ09B0023 0400...
Page 868: ...Section 21 A D Converter Rev 4 00 Sep 14 2005 Page 818 of 982 REJ09B0023 0400...
Page 914: ...Section 23 I O Ports Rev 4 00 Sep 14 2005 Page 864 of 982 REJ09B0023 0400...
Page 956: ...Section 24 List of Registers Rev 4 00 Sep 14 2005 Page 906 of 982 REJ09B0023 0400...
Page 1016: ...Section 25 Electrical Characteristics Rev 4 00 Sep 14 2005 Page 966 of 982 REJ09B0023 0400...
Page 1024: ...Appendix Rev 4 00 Sep 14 2005 Page 974 of 982 REJ09B0023 0400...
Page 1032: ...Rev 4 00 Sep 14 2005 Page 982 of 982 REJ09B0023 0400 X X Y data addressing 52 X Y memory 193...
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Page 1036: ...SH7641 Hardware Manual...