LPC2101_02_03_3

© NXP B.V. 2008. All rights reserved.

Product data sheet

Rev. 03 — 7 October 2008

20 of 32

NXP Semiconductors

LPC2101/02/03

Single-chip 16-bit/32-bit microcontrollers

entering the debug state. The debug communication channel is accessed as a

co-processor 14 by the program running on the ARM7TDMI-S core. The debug

communication channel allows the JTAG port to be used for sending and receiving data

without affecting the normal program flow. The debug communication channel data and

control registers are mapped in to addresses in the EmbeddedICE logic. The JTAG clock

⁄

6.18.2 RealMonitor

RealMonitor is a configurable software module, developed by ARM Inc., which enables

real time debug. It is a lightweight debug monitor that runs in the background while users

debug their foreground application. It communicates with the host using the DCC, which is

present in the EmbeddedICE logic. The LPC2101/02/03 contain a specific configuration of

RealMonitor software programmed into the on-chip boot ROM memory.