EA-OEM-204 Embedded Artists, EA-OEM-204 Datasheet - Page 79

• Manufacturer Part Number: EA-OEM-204
• Description: MCU, MPU & DSP Development Tools LPC2478-16 OEM BRD OEM BASE BRD W/TOUCH
• Manufacturer: Embedded Artists

Specifications of EA-OEM-204

• Processor To Be Evaluated: LPC2478
• Data Bus Width: 16 bit
• Interface Type: RS-232, Ethernet, USB, I2C, SPI, UART
• Core: ARM7TDMI-S
• Dimensions: 240 mm x 150 mm
• Maximum Operating Temperature: + 85 C
• Operating Supply Voltage: 3.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
LPC2478
Product data sheet
Fig 26. LPC2478 USB OTG port configuration: USB port 1 host, USB port 2 host
14.3 Crystal oscillator XTAL input and component selection
LPC24XX
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
slave mode, a minimum of 200 mV (RMS) is needed.
Fig 27. Slave mode operation of the on-chip oscillator
i
= 100 pF. To limit the input voltage to the specified range, choose an additional
USB_UP_LED1
USB_D+1
USB_D−1
USB_PWRD1
USB_OVRCR1
USB_PPWR1
USB_PPWR2
USB_OVRCR2
USB_PWRD2
USB_UP_LED2
USB_D+2
USB_D−2
All information provided in this document is subject to legal disclaimers.
33 Ω
33 Ω
33 Ω
33 Ω
Rev. 2 — 29 September 2010
g
5 V
which attenuates the input voltage by a factor C
15 kΩ
15 kΩ
ENA
ENB
IN
15 kΩ
15 kΩ
V
DD
LM3526-L
V
DD
XTAL1
C i
100 pF
LPC2xxx
FLAGA
OUTA
OUTB
FLAGB
Single-chip 16-bit/32-bit microcontroller
002aae718
C g
V
V
SSCORE
SSCORE
V
V
V
V
DD
DD
SSIO,
SSIO,
V
V
BUS
BUS
D+
D+
D−
D−
002aad596
USB-A
connector
USB-A
connector
LPC2478
i
© NXP B.V. 2010. All rights reserved.
/ (C
i
+ C
g
). In
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