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