Introduction
Overview
MediaTek MT3333 is a high-performance single-chip multi-GNSS solution that includes CMOS RF, digital baseband, ARM7 CPU and embedded NOR flash. It’s able to achieve the industry’s highest level of sensitivity, accuracy and Time-to-First-Fix (TTFF) with the lowest power consumption. Its small footprint lead-free package and minimal additional BOM requirements provide significant reductions in the design, manufacturing and testing resources required to create devices.

FEATUREs
• Specifications
   o GPS/GLONASS/Galileo/BeiDou receiver
   o Supports multi-GNSS including QZSS and SBAS ranging
   o Supports WAAS, EGNOS, MSAS and GAGAN
   o 12 multi-tone active interference cancellers (ISSCC2011 award)
   o RTCM ready
   o Indoor and outdoor multi-path detection and compensation
   o Supports FCC E911 compliance and A-GPS1
   o Maximum fixed update rate up to 10 Hz
• Advanced software features
   o EPO™ orbit prediction
   o EASY™ self-generated orbit prediction
   o LOCUS™ logger function
   o Supports time service application, which is achieved by the PPS vs NMEA feature.
• Reference oscillator
   o TCXO
    Frequency: 16.368 MHz, 12.6 ~ 40.0 MHz
    Frequency variation: ±2.5 ppm
   o Crystal
    Frequency: 26 MHz, 12.6 ~ 40.0 MHz
    Frequency accuracy: ±10 ppm
• RF configuration
   o SOC, integrated in single chip with CMOS process
• ARM7EJ-S CPU
   o Up to 158 MHz processor clock
   o Dynamic clock rate control
• Memory:
   o 8Mb internal flash
   o External SPI serial flash of up to 128 Mb
• Pulse-per-second (PPS) GPS time reference
   o Adjustable duty cycle
   o Typical accuracy: ±10 ns
• Power scheme
   o Built-in 1.8 volts Switching Mode Power Supply (SMPS)
   o Direct lithium battery connection (2.8 ~ 4.3 volts)
   o Built-in 1.1 volts RTC LDO, 1.1 volts core LDO and 2.8 volts TCXO LDO
• Built-in reset controller
   o Does not need an external reset control IC
• Internal real-time clock (RTC)
   o 32.768 kHz ± 20 ppm crystal
   o 1.1 volts RTC clock output
   o Supports external pin to wake up MT3333
• Backup mode
   o A Force_On pin to simplify the backup mode application circuit
• Serial interfaces
   o 3 UARTs
   o SPI and I2C
   o GPIO interface (up to 16 pins)
• NMEA
   o NMEA 0183 standard V4.1 and backward compliance
   o Supports 219 datums
• Sensitivity
   o Acquisition: -148 dBm (cold) / -163 dBm (hot)
   o Tracking: -165 dBm
• Ultra-low power consumption (GPS+GLONASS)
   o Acquisition: 37 mW
   o Tracking: 27 mW
• Package
   o VFBGA: 4.3 mm x 4.3 mm, 57 balls, 0.5 mm pitch
• Slim hardware design
   o Mimimun solution footprint of 52 mm2
   o Single RF Front-End for Multi-GNSS frequency bands
• Compatibility
   o Pin-to-pin compatiblity with MT3339