hardware design v1.00
Table Of Contents
- Contents
- Version History
- 1 Introduction
- 2 SIM968 Overview
- 3 Package Information
- 4 GSM Application Interface
- 4.1 GSM Power Supply
- 4.2 Power on/down Scenarios
- 4.3 Power Saving Mode
- 4.4 Charging Interface
- 4.5 RTC Backup
- 4.6 Serial Interfaces
- 4.7 Audio Interfaces
- 4.8 SIM Card Interface
- 4.9 LCD Display/SPI Interface
- 4.10 Keypad Interface
- 4.11 ADC
- 4.12 RI Behaviors
- 4.13 Network Status Indication
- 4.14 General Purpose Input/Output (GPIO)
- 4.15 External Reset
- 4.16 PWM
- 4.17 I2C Bus
- 4.18 GSM Antenna Interface
- 5 GNSS Application Interface
- 6 Electrical, Reliability and Radio Characteristics
- 6.1 Absolute Maximum Ratings
- 6.2 Recommended Operating Conditions
- 6.3 Digital Interface Characteristics
- 6.4 SIM Card Interface Characteristics
- 6.5 VDD_EXT Characteristics
- 6.6 SIM_VDD Characteristics
- 6.7 VRTC Characteristics
- 6.8 Current Consumption (VBAT = 3.8V)
- 6.9 Electro-Static Discharge
- 6.10 Radio Characteristics
- 6.11 Module label information
- Appendix
Smart Machine Smart Decision
SIM968_Hardware Design_V1.00 2013.02.25
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1 Introduction
This document describes SIM968 hardware interface in great detail.
This document can help user to quickly understand SIM968 interface specifications, electrical and mechanical
details. With the help of this document and other SIM968 application notes, user guide, users can use SIM968 to
design various applications quickly.
2 SIM968 Overview
Designed for global market, SIM968 is integrated with a high performance GSM/GPRS engine and a GNSS
engine. They are independent with each other. The GSM/GPRS engine is a quad-band, GSM/GPRS module that
works on frequencies GSM 850MHz, EGSM 900MHz, DCS 1800MHz and PCS 1900MHz. SIM968 features
GPRS multi-slot class 10/ class 8 (optional) and supports the GPRS coding schemes CS-1, CS-2, CS-3 and CS-4.
The GNSS solution offers best- in-class acquisition and tracing sensitivity, Time-To-First-Fix (TTFF) and
accuracy.
With built-in LNA, SIM968 doesn’t need external LNA. SIM968 can track as low as -167dBm signal even
without network assistance. The SIM968 has excellent low power consumption characteristic (acquisition 34mA,
tracking 37mA). SIM968 supports various location and navigation applications, including autonomous GPS,
GLONASS, GALILEO，QZSS, SBAS (WAAS, EGNOS, GAGAN, MSAS), DGPS (RTCM), and A-GPS.
With a tiny configuration of 30*30*3mm, SIM968 can meet almost all the space requirements in user applications,
such as M2M, smart phone, PDA, tracker and other mobile devices.
SIM968 has 80 SMT pads, and provides all hardware interfaces between the module and customers’ boards.
z Serial port and debug port can help user develop their applications easily.
z GNSS Serial port.
z Audio channels include two inputs and two outputs. These can be easily configured by AT command.
z Charging interface.
z Programmable general purpose input and output.
z The keypad and SPI display interfaces will bring users convenience to develop customized applications.
z RF pad interface.
z Output navigation solution in NMEA protocol format.
z Supports FCC E911 compliance and A-GPS
z 33tracking/99 acquisition-channel GNSS receiver
z Accuracy <2.5m CEP
z RoHS compliant
z Active antenna supervisor
SIM968 is designed with power saving technique so that the current consumption is as low as 1.2mA in sleep
mode (GNSS engine is powered down).
SIM968 integrates TCP/IP protocol and extended TCP/IP AT commands which are very useful for data transfer
applications. For details about TCP/IP applications, please refer to document [2].