Datasheet

LPC408X_7X All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2014. All rights reserved.
Product data sheet Rev. 3.1 — 1 September 2014 110 of 138
NXP Semiconductors
LPC408x/7x
32-bit ARM Cortex-M4 microcontroller
Fig 34. USB interface on a self-powered device
LPC40xx
USB-B
connector
USB_D+
USB_CONNECT
SoftConnect switch
USB_D-
V
BUS
V
SS
V
DD(3V3)
R1
1.5 kΩ
R
S
= 33 Ω
002aah267
R
S
= 33 Ω
USB_UP_LED
Fig 35. USB interface on a bus-powered device
LPC40xx
V
DD(3V3)
R1
1.5 kΩ
R2
USB_UP_LED
002aah268
USB-B
connector
USB_D+
USB_D-
V
BUS
V
SS
R
S
= 33 Ω
R
S
= 33 Ω