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LPC2921 Datasheet(PDF) 71 Page - NXP Semiconductors

No. de pieza LPC2921
Descripción Electrónicos  ARM9 microcontroller with CAN, LIN, and USB
PDF  83 Pages
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Fabricante Electrónico  NXP [NXP Semiconductors]
Página de inicio  http://www.nxp.com
Logo NXP - NXP Semiconductors

LPC2921 Datasheet(HTML) 71 Page - NXP Semiconductors

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LPC2921_23_25_1
© NXP B.V. 2009. All rights reserved.
Preliminary data sheet
Rev. 01 — 15 June 2009
71 of 83
NXP Semiconductors
LPC2921/2923/2925
ARM9 microcontroller with CAN, LIN, and USB
10.2 Suggested USB interface solutions
Fig 26. Core operating frequency versus core voltage for different temperatures
core voltage (V)
1.65
1.95
1.85
1.75
002aae193
125
115
135
145
core
frequency
(MHz)
105
25
°C
45
°C
65
°C
85
°C
Fig 27. LPC2921/2923/2925 USB interface on a self-powered device
LPC29xx
USB-B
connector
USB_D+
SoftConnect switch
USB_D
−
USB_VBUS
VSS(IO)
VDD(IO)
R1
1.5 k
Ω
RS = 33 Ω
002aae149
RS = 33 Ω
USB_UP_LED
USB_CONNECT



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