SIM900A Datasheet - SIM Com

SIM900A Hardware Design

17 3.2 Operating Modes 20 3.3 Power Supply 21 3.3.1 Power Supply Pins22 3.3.2 Minimizing Power Losses 23 3.3.3 Monitoring Power Supply 23 3.4 Power Up and Power Down Scenarios23 3.4.1 Turn on SIM900A 23 3.4.2 Turn Off SIM900A26 3.4.3 Restart SIM900A Using the PWRKEY Pin 28 3.5 Power Saving 29 3.5.1 .

a Hardware Design SIM900A_HD_V1.01 SIM900 Hardware Design Document Title: Version: Date: Status: Document Control ID: SIM900A Hardware Design 1.01 2009-12-26 Release SIM900A_HD_V1.01 General Notes SIMCom offers this information as a service to its customers, to support application and engineering efforts that use the products designed by SIMCom. The information provided is based upon requirements specifically provided to SIMCom by the customers. SIMCom has not undertaken any independent sear.

SIM900A Datasheet (1.84 MB)