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4890AS–GPS–09/05

ATR0621 [Preliminary]

1.

Description

The GPS baseband processor ATR0621 includes a 16-channel GPS correlator and is based

This processor has a high-performance 32-bit RISC architecture and very low power con-

sumption. In addition, a large number of internally banked registers result in very fast

exception handling, making the device ideal for real-time control applications. The ATR0621

has a USB device port. This port is compliant with the Universal Serial Bus (USB) V2.0 full-

speed device specification. The ATR0621 has a direct connection to off-chip memory, includ-

ing Flash, through the External Bus Interface (EBI).

The ATR0621 includes full GPS firmware, licensed from u-blox AG, which performs the basic

GPS operation, including tracking, acquisition, navigation and position data output. For normal

PVT (Position/Velocity/Time) applications, there is no need for off-chip Flash memory or ROM.

In order to be able to store configuration settings, connecting a serial EEPROM is supported.

For customer-specific applications, a Software Development Kit is available.

The ATR0621 is manufactured using the Atmel high-density CMOS technology. By combining

the ARM7TDMI microcontroller core with on-chip SRAM, 16-channel GPS correlator and a

wide range of peripheral functions on a monolithic chip, the ATR0621 provides a highly-flexi-

ble and cost-effective solution for GPS applications.