EA-XPR-007 Embedded Artists, EA-XPR-007 Datasheet - Page 52

• Manufacturer Part Number: EA-XPR-007
• Description: BOARD LPCXPRESSO LPC11U14
• Manufacturer: Embedded Artists

Specifications of EA-XPR-007

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

NXP Semiconductors
11. Application information
LPC11U1X
Objective data sheet
Fig 26. USB interface on a self-powered device
Fig 27. USB interface on a bus-powered device
11.1 Suggested USB interface solutions
11.2 XTAL input
The input voltage to the on-chip oscillators is limited to 1.8 V. If the oscillator is driven by a
clock in slave mode, it is recommended that the input be coupled through a capacitor with
C
capacitor to ground C
mode, a minimum of 200 mV(RMS) is needed.
i
= 100 pF. To limit the input voltage to the specified range, choose an additional
LPC11U1x
LPC11U1x
All information provided in this document is subject to legal disclaimers.
V
USB_CONNECT
USB_VBUS
USB_DP
USB_DM
V
V
USB_VBUS
USB_DP
USB_DM
V
g
DD
SS
DD
SS
which attenuates the input voltage by a factor C
Rev. 1 — 11 April 2011
R S = 33 Ω
R S = 33 Ω
R S = 33 Ω
R S = 33 Ω
R1
1.5 kΩ
R1
1.5 kΩ
soft-connect switch
32-bit ARM Cortex-M0 microcontroller
002aaf893
002aaf894
USB-B
connector
USB-B
connector
LPC11U1x
i
/(C
© NXP B.V. 2011. All rights reserved.
i
+ C
g
). In slave
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