ST20-GP6 Datasheet, PDF (1/123 Pages) STMicroelectronics – GPS PROCESSOR

®
ST20-GP6
GPS PROCESSOR
FEATURES
■ Application specific features
• 12 channel GPS correlation DSP hardware,
ST20 CPU (for control and position
calculations) and memory on one chip
• no TCXO required
• RTCA-SC159 / WAAS / EGNOS supported
■ 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
■ Enhanced 32-bit VL-RISC CPU - C2 core
• 16/33/50 MHz processor clock
• 25 MIPS at 33 MHz
• fast integer/bit operations
■ 64 Kbytes on-chip SRAM
■ 128 Kbytes on-chip ROM
■ Programmable memory interface
• 4 separately configurable regions
• 8/16-bits wide
• support for mixed memory
• 2 cycle external access
■ Programmable UART (ASC)
■ Parallel I/O
■ Vectored interrupt subsystem
■ Diagnostic control unit
■ Power management
• low power operation
• power down modes
■ Professional toolset support
• ANSI C compiler/link driver and libraries
• Debugging/profiling and simulation tools
■ Technology
• Static clocked 50 MHz design
• 3.3 V, sub micron technology
■ 100 pin PQFP package
■ JTAG Test Access Port
Figure 1. Package
PQFP100
Table 1. Order Codes
Part Number
ST20GP6X33S
Figure 2. Block Diagram
Package
PQFP100
GPS
radio
12 channel GPS
hardware DSP
ST20-GP6
ST20
CPU
Low
power
controller
Interrupt
controller
Real time
clock/calendar
Programmable
memory
interface
Serial
communications
2 UART (ASC)
Parallel
input/output
... ₁₆
64K
SRAM
Diagnostic
control unit
128K optional
mask ROM
Test
access port
APPLICATIONS
■ Global Positioning System (GPS) receivers
■ Car navigation systems
■ Fleet management systems
■ Time reference for telecom systems
October 2004
Rev. 2
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