Datasheet

LPC2478 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 3.1 — 16 October 2013 77 of 93
NXP Semiconductors
LPC2478
Single-chip 16-bit/32-bit microcontroller
14.2 Suggested USB interface solutions
Fig 21. LPC2478 USB interface on a self-powered device
LPC24XX
USB-B
connector
USB_D+
USB_CONNECT
soft-connect switch
USB_D−
V
BUS
V
SSIO,
V
SSCORE
V
DD(3V3)
R1
1.5 kΩ
R
S
= 33 Ω
002aad587
R
S
= 33 Ω
USB_UP_LED
Fig 22. LPC2478 USB interface on a bus-powered device
LPC24XX
V
DD(3V3)
R1
1.5 kΩ
R2
USB_UP_LED
002aad588
USB-B
connector
USB_D+
USB_D−
V
BUS
V
SSIO,
V
SSCORE
R
S
= 33 Ω
R
S
= 33 Ω