參數(shù)資料
型號(hào)： LPC2220
廠商： NXP Semiconductors N.V.
英文描述： 16/32-bit ARM microcontrollers; flashless with 64 kB, with 10-bit ADC and external memory interface
中文描述： 16/32位 ARM微控制器；64KB的閃存；10位模數(shù)轉(zhuǎn)換和外部存儲(chǔ)器接口
文件頁(yè)數(shù)： 30/49頁(yè)
文件大?。?/td> 255K
代理商： LPC2220
9397 750 14061
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02— 30 May 2005
30 of 49
Philips Semiconductors
LPC2210/2220
16/32-bit ARM microcontrollers with external memory interface
6.21.2
Embedded trace
Since the LPC2210/2220 has significant amounts of on-chip memory, it is not possible to
determine how the processor core is operating simply by observing the external pins. The
Embedded Trace Macrocell (ETM) provides real-time trace capability for deeply
embedded processor cores. It outputs information about processor execution to the trace
port.
The ETM is connected directly to the ARM core and not to the main AMBA system bus. It
compresses the trace information and exports it through a narrow trace port. An external
trace port analyzer must capture the trace information under software debugger control.
Instruction trace (or PC trace) shows the flow of execution of the processor and provides a
list of all the instructions that were executed. Instruction trace is significantly compressed
by only broadcasting branch addresses as well as a set of status signals that indicate the
pipeline status on a cycle by cycle basis. Trace information generation can be controlled
by selecting the trigger resource. Trigger resources include address comparators,
counters and sequencers. Since trace information is compressed the software debugger
requires a static image of the code being executed. Self-modifying code cannot be traced
because of this restriction.
6.21.3
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 Debug
Communications Channel (DCC), which is present in the EmbeddedICE logic. The
LPC2210/2220 contains a specific configuration of RealMonitor software programmed into
the on-chip memory.
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參數(shù)描述
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LPC2220FBD144-S 制造商:NXP Semiconductors 功能描述:MCU 16-bit/32-bit LPC2000 ARM7TDMI-S RISC ROMLess 1.8V/3.3V 144-Pin LQFP Tray
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