AL7000

AN012: AL7000 External SIM AL7002S-ES Pin Diagram: Pin Diagram RF SPKR NC MIC VCC 64 63 62 61 www.DataSheet4U.com 24 25 26 27 28 29 30 31 32 RESET# NC DGND NC SIMVCC GSM LED SIMDATA SIMRST SIMCLK DGND DTR# DCD# CTS# DSR# RI# TXD# RXD# RTS# 41 40 39 38 37 36 35 34 33 Pin No 1 2 3..23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 NAME NO PIN NO PIN NO PIN RESET NC GND NC SIMVCC GSM LED SIMDATA SIMRST SIMCLK RTS# RXD# TXD# RI# DSR# CTS# Pin No 64 63 62 61 60 59 58 57 56 55 54 45…53 44 43 42 41 40 39 NAME SPEAKER NC MICRO IN VCC NO PIN NO PIN NO PIN NO PIN NO PIN NO PIN NO PIN NO PIN NO PIN NO PIN NO PIN GND DTR# DCD# External SIM Interface 4 signals exist: SIMVCC: SIM power supply. SIMRST: reset. SIMCLK: clock. SIMDATA : I/O port. The SIM interface controls a 3V SIM. This interface is fully compliant with GSM 11.11 recommendations concerning SIM functions. It is recommended to add Transient Voltage Suppressor diodes on the signal connected to the SIM socket in order to prevent any Electrostatic Discharge. TVS diodes with low capacitance (less than 10pF) have to be connected on SIMCLK and SIMDATA to avoid any disturbance of the rising and falling edge. These types of diodes are mandatory for the Full Type Approval. They shall be placed as close as possible to the SIM socket. Signal SIMCLK SIMRST SIMDATA SIMVCC Pin number 32 31 30 28 I/O O O I/O O I/O type 2X 2X CMOS / 3X Description SIM Clock SIM Reset SIM DATA SIM Power Supply APPLICATION NOTE NR. : AN012-...