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General Description

The HT9580 is a high performance pager controller which can be used for Chinese Pager system applications. The HT9580 4-in-1 Character Pager Controller combines a POCSAG decoder with a M6502 microprocessor core, 2 Mbits Character ROM and 256 Kbits SRAM to provide both high decoder performance and excellent system flexibility.

Features

? Operating voltage: 2.4V~3.5V

? Temperature range: -30C to +85C

? low power, high performance M6502 core

? low power crystal oscillator control

- 512/1200/2400 bps data rate operation

? CCIR Radio Paging Code No.1 (POCSAG) compatible

? 76.8kHz crystal for all available data rates

? High/low system clock switching capability

? 44 Kbytes program ROM

? 848 bytes global data RAM

? Internal 2 Mbits Character ROM

? 256 Kbits internal SRAM

? External option up to 2 Mbits Character ROM or 2 Mbits SRAM

? SED15X(KSX), MC141X and HD66410 series LCD driver compatible interface option

? 46 bytes message buffer

? One 16-bit timer and one 8-bit timer

? Internal 2Hz or 1Hz RTC or Real Time Clock option

? Single buzzer generator output (BZ) with duty cycle control

? low current HALT mode operation

? 16-bit watchdog timer

? Built-in data filter (16-times over-sampling ) and bit clock recovery

? Advanced synchronization algorithm

? 2-bit random and (optional) 4-bit burst error correction for address and message

? Up to 6 user addresses and 6 user frames, independently programmable

? 3 RF power-on timing control pins and Received data inversion (optional)

? Built in SPI circuit

? Out-of-range condition indicator

? One internal 8-bit D/A converter

? Battery fail and battery low detection

? 80-pin LQFP package