LPC1857_53 NXP Semiconductors, LPC1857_53 Datasheet - Page 107

• Manufacturer Part Number: LPC1857_53
• Description: The LPC1857/53 are ARM Cortex-M3 based microcontrollers for embedded applications
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 18.
C
[1]
LPC1857_53
Objective data sheet
Symbol
t
t
t
V
t
t
t
t
t
t
r
f
FRFM
FEOPT
FDEOP
JR1
JR2
EOPR1
EOPR2
Fig 29. Differential data-to-EOP transition skew and EOP width
L
CRS
= 50 pF; R
Characterized but not implemented as production test. Guaranteed by design.
T
differential
data lines
PERIOD
Dynamic characteristics: USB pins (full-speed)
pu
= 1.5 k
11.9 USB interface
Parameter
rise time
fall time
differential rise and fall time
matching
output signal crossover voltage
source SE0 interval of EOP
source jitter for differential transition
to SE0 transition
receiver jitter to next transition
receiver jitter for paired transitions
EOP width at receiver
EOP width at receiver

on D+ to V
n × T
differential data to
crossover point
DD(IO)
SE0/EOP skew
PERIOD
, unless otherwise specified.
All information provided in this document is subject to legal disclaimers.
+ t
FDEOP
Rev. 1 — 14 December 2011
10 % to 90 %
Conditions
10 % to 90 %
10 % to 90 %
see
see
must reject as
EOP; see
Figure 29
must accept as
EOP; see
Figure 29
t
r
/ t
Figure 29
Figure 29
f
crossover point
extended
[1]
[1]
32-bit ARM Cortex-M3 microcontroller
Min
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
source EOP width: t
receiver EOP width: t
Typ
-
-
-
-
-
-
-
-
-
-
LPC1857/53
© NXP B.V. 2011. All rights reserved.
Max
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
<tbd>
-
-
FEOPT
002aab561
EOPR1
, t
EOPR2
107 of 131
Unit
ns
ns
%
V
ns
ns
ns
ns
ns
ns