LPC1115 UART ISP connection

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LPC1115 UART ISP connection

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lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by atiu on Mon Apr 01 21:27:49 MST 2013
Hi,

There are a number of RXD and TXD pins available on the LPC1115FBD48 variant listed below,

RXD - Pin 46, 37, 18, 11
TXD - Pin 47, 36, 21, 12

My question is what pin/pair will be used during the initial bootup ISP programming.  In the LPC1114, there is only one RXD and TXD pin option.

I have gone through the manual and datasheet and this is not stated clearly what pins are used for the ISP programming bootloader.

Thanks for your help,
Albert
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lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by arw on Mon Apr 28 15:19:21 MST 2014
Hello,

Since the LPC1115 is backward compatible to the rest of the 111x series, ports PIO1_6 and PIO1_7 support the RXD/TXD ISP function.  These are pins 46 & 47 on the LQFP48 package.

-AW
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lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by korndoerfer on Mon Apr 28 08:27:00 MST 2014
Hi,
I have the same problem and I am not able to understand that answer.
What is the correct pin pair for the LQFP48 package ??
Thank you.
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lpcware
NXP Employee
NXP Employee
Content originally posted in LPCWare by gbm on Tue Apr 02 00:28:39 MST 2013
And which pins are used for UART in boot mode in chips without UART remap capabilities?

Use the same pins as one would use in LPC1111, LPC1112, LPC1113.
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