Hardware Design V1.01(091226)
Table Of Contents
- Contents
- Version history
- 1 Introduction
- 2 SIM900 Overview
- 3 Application Interface
- 3.1 SIM900 Pin Description
- 3.2 Operating Modes
- 3.3 Power Supply
- 3.4 Power Up and Power Down Scenarios
- 3.5 Power Saving
- 3.6 Summary of State Transitions (except SLEEP mode)
- 3.7 RTC Backup
- 3.8 Serial Interfaces
- 3.9 Audio Interfaces
- 3.10 SIM Card Interface
- 3.11 LCD Display Interface
- 3.12 Keypad Interface
- 3.13 ADC
- 3.14 Behaviors of the RI
- 3.15 Network Status Indication
- 3.16 General Purpose Input Output (GPIO)
- 3.17 External Reset
- 3.18 PWM
- 3.19 I2C Bus
- 4 Antenna Interface
- 5 Electrical, Reliability and Radio Characteristics
- 6 Mechanics
SIM900 Hardware Design
Table 30: The ESD endure statue measured table (Temperature: 25 , Humidity:45% )℃
Part Contact discharge Air discharge
VBAT ±5KV ±10KV
GND ±4KV ±10KV
RXD, TXD ±3KV ±6KV
Antenna port ±5KV ±10KV
SPK_P/N
MIC_P/N
±2KV ±6KV
PWRKEY ±1KV ±6KV
Other port TBD TBD
6 Mechanics
This chapter describes the mechanical dimensions of SIM900.
6.1 Mechanical Dimensions of SIM900
Following shows the Mechanical dimensions of SIM900 (top view, side view and bottom view).
Figure 36: Top an Side Mechanical dimensions of module （Unit: mm）
SIM900_HD_V1.01 26.12.2009
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