LPC2148 ARM7 Bare Bone = best development quick start board for only $75
Digital Shortcut Inc. DS2148BB board features LPC2148 (32bit ARM7 microcontroller).
When you need a fast processor with an USB interface this board is the perfect choice.
It is a low-cost platform - ideal for KickStart of a new project as well as high-volume OEMs.
LPC2148 from NXP
512kbytes Flash ROM , 32kbytes + 8kbytes RAM
USB 2.0 Controller
Two I2C interfaces
two SPI interfaces
Two 32-bit Timers
Watch Dog Timer
Low Power RTC
Two 10bit ADCs (up to 14 channels)
Multilevel Interrupt System
40+ Fast General purpose I/O pins (5V tolerant)
ISP and IAP capabilities
Flash: 100,000 erase/write cycles
20 years of data retention
12.000 MHz crystal (60 MHz execution with PLL)
32.768 Hz crystal for RTC
MAX3232 with NXP bootloader support (ISP)
8 kbit I2C E2PROM for storing non-volatile parameters
manual reset button
On board low-dropout 3.3V regulator TPS73733
Power Supply 3.5 - 5.5 VDC or from USB port
Power consumption under 1Watt
USB type B
DSUB-9 for RS232
20 pin JTAG port header
optional two 24 pin headers/sockets
with P0, P1 signals (0.1 spacing)
optional 2 pin header for external power supply
Only $75, order it online
Fast, Small, Low Power, Easy
2.9" x 1.3" (74 x 33 mm)
Our download page
has a nice set of powerful software examples:
LPC2148 Demo Application
with FreeRTOS Kernel
port from http://www.freertos.org/
integrated by John C. Wren http://jcwren.com/arm/. This project covers most
of LPC2148 standard peripherals used as non-trivial interfaces to LCD Display, LM75 Temprature Sensor and GPS to name only a few.
It is designed as a Real-Time System with several tasks running concurently. John utilized open source solutions from
Richard Barry (FreeRTOS), Adam Dunkels (uIP), Bertrik Sikken (LPCUSB) and others.
The combined result (representing probably thousands of man-hours) is really impressive and the porting to our board is only click away
from your computer. You are getting full sources with "makefiles" and "batches" for FREE, while commercial Embedded RTOS can cost
even thousands of dollars. We didn't use all the features/modules from original demo, but most of the stuff and the "frame infrastructure" is there.
LPC2148 RTC project.
LPC2148 Timer 1ms system "heart beat" application.
DS2148BB Software Package available for download: DS2148BB.zip
All software for DS2148BB board was written in plain C, compiled with an excellent FREE
open source GCC
and programmed to LPC2148 by FREE
Serial Flash Loader. Instructions for Tools Downloading are on Download Page
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