Embedded LPC3250 Guia do Utilizador descarregar pdf (Página 19)

LPC3250 Developer’s Kit - User’s Guide

Page 19

Copyright 2010 © Embedded Artists AB

JTAG connector

19

JTAG_TDI

JTAG_TDI

Connected to standard 20 pos (2x10 pin)

JTAG connector

20

JTAG_TDO

JTAG_TDO

Connected to standard 20 pos (2x10 pin)

JTAG connector

21

V3A

VDDA

Positive reference for trimming potentiometer

22

VREF

NC (can be VCCA)

Can be connected VDDA(V3A)

23

VSSA

VSSA

Negative reference for trimming potentiometer

24

GND

GND

GND

25

P2.0

GPO_10

LCDPWR signal, power enable for QVGA

display. Also connects to ETM pads, if

connector mounted.

ETM cannot be

used

26

P2.1

GPO_12

LCDLE signal. Not used by design. Also

connects to ETM pads, if connector mounted.

ETM cannot be

used

27

P2.2

GPO_13

LCDDCLK signal, dot clock for QVGA display.

Also connects to ETM pads, if connector

mounted.

ETM cannot be

used

28

P2.3

GPO_15

LCDFP signal, vsync for QVGA display. Also

connects to ETM pads, if connector mounted.

ETM cannot be

used

29

P2.4

GPO_16

LCDENAB signal, data enable for QVGA

display. Also connects to ETM pads, if

connector mounted.

ETM cannot be

used

30

P2.5

GPO_18

LCDLP signal, hsync for QVGA display. Also

connects to ETM pads, if connector mounted.

ETM cannot be

used

31

P2.6

P0.2

LCD databit 4. Also connects to ETM pads, if

connector mounted.

ETM cannot be

used

32

P2.7

P0.3

LCD databit 5. Also connects to ETM pads, if

connector mounted.

ETM cannot be

used

33

P2.8

P0.4

LCD databit 6. Also connects to ETM pads, if

connector mounted.

ETM cannot be

used

34

P2.9

P0.5

LCD databit 7. Also connects to ETM pads, if

connector mounted.

ETM cannot be

used

35

P2.10

GPI_01

Connected to push-button (for enabling

bootloader during reset or EINT0 input). Also

connects to LED (active low).

Connects to USB-to-serial bridge (for

automatic ISP functionality)

Enable UART

booting by pulling

signal low at reset

36

P2.11

U7_HCTS

LCDCLKIN, an external clock signal can be

feed to this pin.

37

VCC

VCC

38

GND

GND

39

VCC

VCC

40

GND

GND

41

P0.29-USBA-DP

NC (can be

KEYROW0)

Connects to USB device/OTG interface

USB Device/OTG

i/f not used

42

P0.31-USBB-DP

USB_CONN_DP

Connects to USB host interface

USB Host interface

is connected to the

LPC3250

43

P0.30-USBA-DM

NC (can be

Connects to USB device/OTG interface

USB Device/OTG

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