HT48R54A
I/O Type 8-Bit OTP MCU with 16´16 High Current LED Driver
Technical Document
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Features
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Operating voltage:
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PFD/Buzzer driver output
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RC/XTAL and 32768Hz crystal oscillator
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Dual clock system offers three operating modes
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Normal mode: Both RC/XTAL and 32768Hz clock
f
SYS
=32768Hz: 2.2V~5.5V
f
SYS
=4MHz: 2.2V~5.5V
f
SYS
=8MHz: 3.3V~5.5V
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4k´15 program memory ROM
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192´8 data memory RAM
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8 bidirectional I/O lines
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Max. 16´16 LED driver output
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8 LED shared I/O lines
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24 LED shared output
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One external interrupt input
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Two internal interrupt
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Two 8 bit programmable timer/event counter
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32768 Real Time Clock function
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6-level subroutine nesting
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Watchdog Timer (WDT)
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Low voltage reset (LVR)
active
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Slow mode: 32768Hz clock only
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Idle mode: Periodical wake-up by watchdog timer
overflow
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HALT function and wake-up feature reduce power
consumption
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15-bit table read instructions
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63 powerful instructions
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One instruction cycle: 4 system clock periods
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All instructions in 1 or 2 instruction cycles
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Bit manipulation instructions
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Up to 0.5ms instruction cycle with 8MHz system clock
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44/52-pin QFP and 44-pin LQFP packages
General Description
This device is an 8-bit high performance, RISC architec-
ture microcontroller specifically designed for multiple
I/O control product applications. The advantages of low
power consumption, I/O flexibility, timer functions, oscil-
lator options, HALT and wake-up functions, watchdog
timer, as well as low cost, enhance the versatility of
these devices to suit a wide range of application possi-
bilities such as industrial control, consumer products,
subsystem controllers, etc.
Rev. 1.20
1
April 28, 2010
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
