ST20-GP1 Datasheet, PDF (1/116 Pages) STMicroelectronics – GPS PROCESSOR

®
ST20-GP1
FEATURES
s Application specific features
• 12 channel GPS correlation DSP hardware
and ST20 CPU (for control and position calu-
culations) on one chip
• no TCXO required
• RTCA-SC159 / WAAS / EGNOS supported
s GPS performance
• accuracy
- stand alone
with SA on <100m, SA off <30m
- differential <1m
- surveying <1cm
• time to first fix
- autonomous start 90s
- cold start 45s
- warm start 7s
- obscuration 1s
s 32-bit ST20 CPU
• 16/33 MHz processor clock
• 25 MIPS at 33 MHz
• fast integer/bit operations
s 4 Kbytes on-chip SRAM
• 130 Mbytes/s maximum bandwidth
s Programmable memory interface
• 4 separately configurable regions
• 8/16-bits wide
• support for mixed memory
• 2 cycle external access
s Serial communications
• Programmable UART (ASC)
• OS-Link
s Vectored interrupt subsystem
• 2 dedicated interrupt pins
• 5 levels of interrupt
s Power management
• low power operation
• power down modes
s Professional toolset support
• ANSI C compiler and libraries
• INQUEST advanced debugging tools
s Technology
• Static clocked 50 MHz design
• 3.3 V, sub micron technology
s 100 pin PQFP package
GPS PROCESSOR
ENGINEERING DATA
GPS
radio
12 channel GPS
hardware DSP
ST20-GP1
ST20
CPU
Low
power
controller
Interrupt
controller
Real time
clock/calendar
4K
SRAM
Serial
communications
2 UART (ASC)
1 OS-Link
Parallel
input/output
... ₆
Programmable
memory
interface
Byte-wide
parallel port
... 8
RAM
ROM/
FLASH
APPLICATIONS
s Global Positioning System (GPS) receivers
s Car navigation systems
s Fleet management systems
s Time reference for telecom systems
October 1996
The information in this datasheet is subject to change
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