HT9480_02 Datasheet, PDF (1/47 Pages) Holtek Semiconductor Inc – 8-Bit Numerical Pager Controller MCU

HT9480
8-Bit Numerical Pager Controller MCU
Features
· Operating voltage: 2.4V~3.3V
· Low power crystal oscillator control
- 512, 1200, or 2400 bps data rate operation
· Decodes CCIR Radio-paging Code No.1 (POCSAG
Code)
· 2-bit random and optional 4-bit burst error correction
· Improved synchronization algorithm
· Supports up to 6 independently programmable user
addresses and 6 user frames
· Three RF power on timing control pins
· Single crystal for all available baud rate (76.8kHz
crystal)
· Battery low indication (external detector)
· Battery fail interrupt and data ready interrupt
· 8K´16 program ROM
· 416´8 data RAM
· 35´4 LCD display
· 7 input lines and 10 bidirectional I/O lines
· 8-bit programmable timer for RTC interrupt
· 8-bit programmable timer/event counter and over-
flow interrupt
· 8-bit programmable tone generator with buzzer out-
put
· Watchdog Timer
· HALT function and wake-up feature reduce power
consumption
· 63 powerful instructions, most instructions in one
machine cycle
· Eight-level subroutine nesting
· Table read instruction
· Inverted or non-inverted input signal selection for de-
coder input
· 80-pin LQFP(12´12) package
General Description
The HT9480 is a high performance pager controller. The
built-in single cycle instructions (16-bit wide) and
two-stage pipeline architecture of the HT9480 account
for its high performance. The controller contains a full
function pager decoder (POCSAG code) at 512, 1200,
or 2400 bits per second data rate and an LCD display
driver with a 35´4 dot output.
Rev. 1.20
1
July 31, 2002