1 Introduction

STR720-EVAL

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1

Introduction

STMicroelectronics is a global independent semiconductor company that designs, develops,

manufactures and markets a broad range of semiconductor integrated circuits and discrete

devices used in a wide variety of applications.

The STR720-EVAL board is based on the STR720, a highly integrated microcontroller, running

unified cache and a memory management unit (MMU) with16 Kbytes of program RAM, external

SDRAM interface for up to 128 Mbytes of SDRAM, an EMI for up to 8 Mbytes of SRAM, flash or

ROM and numerous on-chip peripherals.

This board is intended as a low cost development platform to demonstrate the capability of the

STR720 series of micro-controllers and to enable rapid evaluation of the STR720 devices and

available peripherals.

The STR720-EVAL board has 4 Mbytes of flash on EMI, 1-Mbit SPI serial flash and 16 Mbytes

of SDRAM. It supports ATAPI, USB, CAN and RS232 interfaces. The on-board chip

This board includes a 2x16 programmable LCD display supported by reset, RTC reset, next,

select and previous push buttons.

The hardware platform of the STR720 series is supported by an extensive software support

package, including device drivers in ANSI C source form and demonstration software. It is

flashed with a demonstration application that shows the basic features of the device.

Development tools are readily available. This is complemented by a range of third party real-

time OS and middleware.

Design schematics can also be supplied in electronic format to those customers with

compatible design environments.

Note:

countries.

1.1

Processor and memory devices on this board

●

–

208-pin PQFP version,

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8 Kbytes cache,

–

16 Kbytes program RAM,

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memory management unit (MMU),

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dual voltage, 1.8 V for core supply and 3.3 V for inputs/outputs,

–

nested interrupt controller.

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External memory interface:

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flash (bank 0) 4 Mbytes arranged as 2M x 16: IC17,

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LCD (bank 0), see

Section 1.4 on page 4: LCD1,

–

ATAPI interface: CN3

●

SMI (bank 0) 16 Mbytes SDRAM arranged as (2 x (4M x 16)): IC8, IC15,