HT9580 Datasheet, PDF (1/63 Pages) Holtek Semiconductor Inc – Character Pager Controller

Preliminary
HT9580
Character Pager Controller
Features
· Operating voltage: 2.4V~3.5V
· Temperature range: -30°C to +85°C
· low power, high performance M6502 core
· low power crystal oscillator control
- _{512/1200/2400 bps data rate operation}
· ²CCIR Radio Paging Code No.1² (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
General Description
The HT9580 is a high performance pager con-
troller which can be used for Chinese Pager
system applications. The HT9580 4-in-1 Char-
acter Pager Controller combines a POCSAG de-
coder with a M6502 microprocessor core, 2
Mbits Character ROM and 256 Kbits SRAM to
provide both high decoder performance and ex-
cellent system flexibility. The decoder utilizes a
2-bit random error correction algorithm and
· 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 er-
ror 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
therefore provides excellent decoder sensitiv-
ity. The controller contains a full function
pager decoder at a 512, 1200, 2400 bps data
rates. Using an M6502 core takes advantage of
a flexible external control interface, LCD driver
chips and abundant programming resources
from worldwide providers. The internal SPI
would communicate with SPI of FLEX^TM high
speed pager decoder.
FLEX^TM is a trademark of Motorola Inc.
1
April 28, 2000