參數(shù)資料
型號: EA-QSB-012
廠商: Embedded Artists
文件頁數(shù): 55/74頁
文件大?。?/td> 0K
描述: BOARD QUICK START LPC1343
標(biāo)準包裝: 1
系列: LPC13xx
類型: MCU
適用于相關(guān)產(chǎn)品: LPC1343
所含物品:
LPC1311_13_42_43
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 5 — 6 June 2012
59 of 74
NXP Semiconductors
LPC1311/13/42/43
32-bit ARM Cortex-M3 microcontroller
11. Application information
11.1 Suggested USB interface solutions (LPC1342/43 only)
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
Ci = 100 pF. To limit the input voltage to the specified range, choose an additional
capacitor to ground Cg which attenuates the input voltage by a factor Ci/(Ci + Cg). In slave
mode, a minimum of 200 mV(RMS) is needed.
Fig 32. LPC1342/43 USB interface on a self-powered device
LPC134x
USB-B
connector
USB_DP
USB_CONNECT
soft-connect switch
USB_DM
USB_VBUS
VSS
VDD
R1
1.5 k
Ω
RS = 33 Ω
002aae608
RS = 33 Ω
Fig 33. LPC1342/43 USB interface on a bus-powered device
LPC134x
VDD
R1
1.5 k
Ω
002aae609
USB-B
connector
USB_DP
USB_DM
USB_VBUS
VSS
RS = 33 Ω
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