LPC2148 Microcontroller Architecture and Programming PDF

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LPC2148 Microcontroller Architecture and Programming Dr. N. Mathivanan Visiting Professor, Department of Instrumentation & Control Engineering National Institute of Technology Trichy LPC2148 • Provided by NXP Semiconductor Ltd. • Based on ARM v4T architecture version, • Based on ARM7-TDMI proces...

Description

LPC2148 Microcontroller

Architecture and Programming

Dr. N. Mathivanan Visiting Professor, Department of Instrumentation & Control Engineering National Institute of Technology Trichy

LPC2148 • Provided by NXP Semiconductor Ltd. • Based on ARM v4T architecture version,

• Based on ARM7-TDMI processor • Integrated Real-Time Emulation and Embedded Trace support. • Topics discussed: o Specification list o LPC2148 – Internal architecture diagram o Pin diagram, Pin connect block, o Memory map o GPIO, PLL o Interrupt structure, Vectored Interrupt Controller (VIC) o Peripherals: ADC, DAC, Timer, PWM, o Serial Communication Interfaces: Dr. N. Mathivanan

• LPC2148 - Specifications

Static RAM (On-chip)

Architecture Processor Instructions Debug support Size Additional

: ARM v4T : ARM7-TDMI-S : 32-bit ARM and 16-bit Thumb : RT EmbeddedICE, Embedded Trace interface : 32 KB : 8 KB for USB DMA

Flash Program Mem. (On-chip)

Size Programming

: 512 KB : ISP/IAP via on-chip boot-loader program.

GPIO

No. of pins Features

: up to 45 (fast GPIO lines, 5V tolerant) : Configurable to fast GPIO

External Interrupts

Interrupts No. of pins Sensitivity

: Four : Nine : Rising/falling edge or low/high level sensitive

Timer/Counter

No. of Timers Operation Compare & Cap

: Two, 32-bit : Counter or timer operation : Four channels for each timer

Processor

Dr. N. Mathivanan

PWM

No. of outputs If not enabled

Watchdog Timer

Timer

RTC

Features

 Maintains calendar, clock,  Provides Seconds, Minutes, Hours, day of week, day of Month, Month, day of Year, Year.  Consumes very low power,  Dedicated power pin, can use battery  Uses dedicated 32 kHz clock

ADC

No. of ADC No. of channel Resolution

: Two, Successive approximation type : 14 (ADC0 – 6 channels, ADC1 – 8 channels) : 10-bit

DAC

: 6 single edge / 3 double edge controlled or mix : Used as a standard 32-bit timer/counter  32-bit counter, divide by 4 fixed pre-scaler  Internally resets the chip

Conversion time VREF

: 2.44 ms per channel : >2.5V,...