LPC3250FET296

16位/ 32位ARM微控制器;硬件浮点协处理器， USB的On-the - Go，然后EMC存储器接口 16/32-bit ARM microcontrollers; hardware floating-point coprocessor, USB On-The-Go, and EMC memory interface

Overview

The LPC3250 operates at CPU frequencies of up to 266 MHz. The ® implementation uses an ARM926EJ-S CPU core with a Harvard architectur, 5-stage pipeline, and an integral Memory Management Unit. The LPC3250 also includes 256 kB of on-chip static RAM, a NAND flash interface, an Ethernet MAC, an LCD controller that supports STN and TFT panels, and an external bus interface that supports SDR and DDR SDRAM, as well as static devices. In addition, the LPC3250 includes a USB 2.0 full-speed interface, seven UARTs, two I2C-bus interfaces, two SPI/SSP ports, two I2S-bus interfaces, two single output PWMs, a motor control PWM, six general purpose timers with capture inputs and compare outputs, a Secure Digital interface, and a 10-bit Analog-to-Digital Converter with a touch screen sense option.

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## Features

* ARM926EJS processor, running at CPU clock speeds up to 266 MHz

* Vector Floating Point VFP coprocessor

* 32 kB instruction cache and a 32 kB data cache

* Up to 256 kB of Internal SRAM IRAM

* Selectable boot-up from various external devices

* Multi-layer AHB system that provides a separate bus for each AHB master

* External memory controller for DDR and SDR SDRAM as well as for static devices

* Two NAND flash controllers

* Master Interrupt Controller MIC and two Slave Interrupt Controllers SIC

* Eight channel General Purpose DMA GPDMA controller on the AHB

* 10/100 Ethernet MAC with dedicated DMA Controller

* USB interface supporting either device, host OHCI compliant, or On-The-Go

* Four standard UARTs with fractional baud rate generation

* Three additional high-speed UARTs intended for on-board communications

* Two SPI controllers

* Two SSP controllers

* Two I2C-bus interfaces with standard open-drain pins

* Two I2S-bus interfaces, each with separate input and output channels

* LCD controller supporting both STN and TFT panels

* Secure Digital SD memory card interface

* General Purpose GP input, output, and I/O pins

* 10 bit, 400 kHz Analog-to-Digital Converter ADC

* Real-Time Clock RTC with separate power pin and dedicated 32 kHz oscillator

* 32-bit general purpose high-speed timer with a 16-bit pre-scaler

* Six enhanced timer/counters

* 32-bit millisecond timer driven from the RTC clock

* WatchDog timer clocked by the peripheral clock

* Two single-output PWM blocks

* Motor control PWM

* Keyboard scanner function allows automatic scanning of an up to 8 x 8 key matrix

* Up to 18 external interrupts

* Standard ARM test/debug interface for compatibility with existing tools

* Emulation Trace Buffer ETB with 2048 x 24 bit RAM allows trace via JTAG

* Stop mode saves power

* On-chip crystal oscillator

* An on-chip PLL allows CPU operation up to the maximum CPU rate

* Boundary scan for simplified board testing

## Target Applications

* Consumer

* Medical

* Industrial

* Network control

## Features