Nxp Semiconductors OM11043 Fiche De Données
LPC1769_68_67_66_65_64_63
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Product data sheet
Rev. 9.5 — 24 June 2014
71 of 89
NXP Semiconductors
LPC1769/68/67/66/65/64/63
32-bit ARM Cortex-M3 microcontroller
Fig 31. USB interface on a bus-powered device where V
BUS
= 5 V, V
DD
not present
LPC17xx
V
DD
R1
1.5 kΩ
1.5 kΩ
R2
R3
USB-B
connector
connector
USB_D+
USB_D-
USB_VBUS
V
SS
RS = 33 Ω
RS = 33 Ω
aaa-008962
R2
USB_UP_LED
Fig 32. USB interface with soft-connect
LPC17xx
USB-B
connector
connector
USB_D+
USB_CONNECT
SoftConnect switch
USB_D
−
V
BUS
V
SS
V
DD(3V3)
R1
1.5 k
1.5 k
Ω
RS = 33
Ω
002aad939
RS = 33
Ω
USB_UP_LED