ATR0621P1 Datasheet, PDF (2/14 Pages) ATMEL Corporation – GPS Baseband Processor

1. Description
The GPS baseband processor ATR0621P1 includes a 16-channel GPS correlator and is based
on the ARM7TDMI processor core.
This processor has a high-performance 32-bit RISC architecture and very low power consump-
tion. 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 ATR0621P1 has two
USART and an USB device port. This port is compliant with the Universal Serial Bus (USB) V2.0
full-speed device specification. The ATR0621P1 has a direct connection to off-chip memory,
including Flash, through the External Bus Interface (EBI).
The ATR0621P1 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.
The firmware supports e.g. the NMEA^® protocol (2.1 and 2.3), a binary protocol for PVT data,
configuration and debugging, the RTCM protocol for DGPS, SBAS (WAAS, EGNOS and MSAS)
and A-GPS (aiding). It is also possible to store the configuration settings in an optional external
EEPROM.
The ATR0621P1 is manufactured using the Atmel^® high-density CMOS technology. By combin-
ing the ARM7TDMI microcontroller core with on-chip SRAM, 16-channel GPS correlator and a
wide range of peripheral functions on a monolithic chip, the ATR0621P1 provides a highly-flexi-
ble and cost-effective solution for GPS applications.
2 ATR0621P1
4975BS–GPS–05/08