SIMCom presents a high performance and reliable assisted GPS module-SIM28. It is in a SMT type with MTK
mature GPS only navigation engine, which allows you to achieve the industry's high levels of accuracy and
SIM28 industry s Time-to-First-Fix (TTFF) with lowest power consumption.

Mechanical data
?Dimensions: 16*12.2*2.4mm
?Weight: 1g

Features
?Support EASYTM self-generated orbit prediction
?Support SBAS ranging (WAAS, EGNOS, GAGAN,
MSAS)
?Support EPOTM orbit prediction
?Support Jamming removing function
? Low-noise amplifier has been integrated

Interfaces
?Serial interfaces         UART, SPI / I2C
?Digital I/O                 TIMEMARK output
                               EINT0 input
                               GPIO
?Protocols                  NMEA
                               PMTK

Support evaluation products
?SIM28-TE
?SIM28EVB KIT with USB V2.0 full speed interface

Electrical data
?Power supply                      +2.8V ~4.3V
?Backup power                     +2.3V ~4.3V
? Power consumption
-- Acquisition:                      24 mA
-- Tracking:                         19mA
-- Standby mode:                 <200μA
? Antenna type                   Active and Passive
?Antenna power                 External or internal
                                       VCC_RF

Performance data
?Receiver type                      22 tracking / 66 acquisitionchannel
                                         GPS receiver
                                         GPS L1 C/A Code
?Max. update rate                 10Hz
?Sensitivity1
  Tracking:                            -167 dBm
   Reacquisition:                    -160 dBm
   Cold starts:                       -147 dBm
? Time-To-First-Fix
  Cold starts with EASY:           13s
  Warm starts with EASY:         1~2s
  Cold starts:                           32s
   Cold starts with
  EPO Assist:                           15s
  Hot starts:                            <1s
? Accuracy
  Automatic Position:                2.5m CEP
  Speed:                                 0.1m/s
  Timing:                                 10ns
?Operation temperature:           -40℃~+85 ℃