LPC2921 datasheet(1/81 Pages) PHILIPS

Part #	LPC2921

Description	ARM9 microcontroller with CAN, LIN, and USB device

PDF	81 Pages

Scroll/Zoom	100%

Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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1.

General description

The LPC2921/2923/2925 combine an ARM968E-S CPU core with two integrated TCM

blocks operating at frequencies of up to 125 MHz, Full-speed USB 2.0 device controller,

CAN and LIN, up to 40 kB SRAM, up to 512 kB flash memory, two 10-bit ADCs, and

multiple serial and parallel interfaces in a single chip targeted at consumer, industrial,

medical, communication, and automotive markets. To optimize system power

consumption, the LPC2921/2923/2925 has a very flexible Clock Generation Unit (CGU)

that provides dynamic clock gating and scaling.

2.

Features

ARM968E-S processor running at frequencies of up to 125 MHz maximum.

Multilayer AHB system bus at 125 MHz with four separate layers.

On-chip memory:

Two Tightly Coupled Memories (TCM), 16 kB Instruction (ITCM) and 16 kB Data

TCM (DTCM).

On the LPC2925, two separate internal Static RAM (SRAM) instances, 16 kB each.

On the LPC2923 and LPC2921, one 16 kB SRAM block.

8 kB ETB SRAM, also usable for code execution and data.

Up to 512 kB high-speed flash-program memory.

16 kB true EEPROM, byte-erasable/programmable.

Dual-master, eight-channel GPDMA controller on the AHB multilayer matrix which can

be used with both I2C interfaces, the SPI interfaces, and the UARTs, as well as for

memory-to-memory transfers including the TCM memories.

Serial interfaces:

USB 2.0 full-speed device controller with dedicated DMA controller and on-chip

device PHY.

Two-channel CAN controller supporting Full-CAN and extensive message filtering.

Two LIN master controllers with full hardware support for LIN communication. The

LIN interface can be configured as UART to provide two additional UART

interfaces.

Two 550 UARTs with 16-byte Tx and Rx FIFO depths, DMA support, and RS485

(9-bit) support.

Three full-duplex Q-SPIs with four slave-select lines; 16 bits wide; 8 locations deep;

Tx FIFO and Rx FIFO.

Two I2C-bus interfaces.

LPC2921/2923/2925

ARM9 microcontroller with CAN, LIN, and USB device

Rev. 00.01 — 24 October 2008

Preliminary data sheet

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