LPC2420FBD208,551 NXP Semiconductors, LPC2420FBD208,551 Datasheet - Page 46

• Manufacturer Part Number: LPC2420FBD208,551
• Description: IC ARM7 MCU ROMLESS 208LQFP
• Manufacturer: NXP Semiconductors
• Series: LPC2400r

Specifications of LPC2420FBD208,551

• Program Memory Type: ROMless
• Package / Case: 208-LQFP
• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 72MHz
• Connectivity: EBI/EMI, I²C, Microwire, MMC, SPI, SSI, SSP, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
• Number Of I /o: 160
• Ram Size: 82K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: LPC24
• Core: ARM7TDMI-S
• Data Bus Width: 16 bit, 32 bit
• Data Ram Size: 82 KB
• Interface Type: CAN/I2C/I2S/SPI/SSP/UART/USB
• Maximum Clock Frequency: 72 MHz
• Number Of Programmable I/os: 160
• Number Of Timers: 4
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• On-chip Dac: 1-ch x 10-bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 568-4527; 935286745551

NXP Semiconductors
LPC2420_60_5
Preliminary data sheet
7.26.2 Embedded trace
7.26.3 RealMonitor
The JTAG clock (TCK) must be slower than
interface to operate.
Since the LPC2420/2460 have significant amounts of on-chip memories, it is not possible
to determine how the processor core is operating simply by observing the external pins.
The ETM provides real-time trace capability for deeply embedded processor cores. It
outputs information about processor execution to a trace port. A software debugger allows
configuration of the ETM using a JTAG interface and displays the trace information that
has been captured.
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 captures the trace information under software debugger control. The
trace port can broadcast the Instruction trace information. 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 can not be traced because of this
restriction.
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 LPC2420/2460 contain a specific configuration of
RealMonitor software programmed into the on-chip ROM memory.
Rev. 05 — 24 February 2010
1
⁄
6
of the CPU clock (CCLK) for the JTAG
Flashless 16-bit/32-bit microcontroller
LPC2420/2460
© NXP B.V. 2010. All rights reserved.
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