S5T8701

FLEX TM ROAMING DECODER II S5T8701 INTRODUCTION 32-LQFP-0707 This FLEX Roaming Decoder II date sheet describes the operation of the S5T8701. The S5T8701 simplifies implementation of a FLEXTM paging device by interfacing with any of several off-the-shelf paging receivers and any of several off-the-shelf host microcontroller/microprocessors. Its primary function is to process information received and demodulated from a FLEX radio paging channel, select messages addressed to the paging device and communicate the message information to the host. The S5T8701 also operates the paging receiver in an efficient power consumption mode and enables the host to operate in a low power mode when monitoring a signal channel for message information. TM FEATURES FLEXTM paging protocol decoder 16 programmable user address words 16 fixed temporary addresses 16 operator messaging addresses 1600,3200,and 6400bps(bits per second) decoding Any-phase or single-phase decoding Uses standard Serial Peripheral Interface (SPI) in slave mode Allow low current STOP mode operation of host processor Highly programmable receiver control Real time clock time base FLEX fragmentation and group messaging support Real time clock over-the-air update support Compatible with synthesized receivers SSID and NID Roaming support Low Battery Indication(External detector) 28 used pins (32-pin package standard) Backward compatible to the standard and roaming FLEX decoder ICs I...