HT48R10A-1
8-Bit Microcontroller
Features
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Operating voltage:
f
SYS
=4MHz: 3.3V~5.5V
f
SYS
=8MHz: 4.5V~5.5V
21 bidirectional I/O lines (max.)
1 interrupt input shared with an I/O line
8-bit programmable timer/event counter with
overflow interrupt and 8-stage prescaler
On-chip external crystal, RC oscillator and
internal RC oscillator
32768Hz crystal oscillator for timing
purposes only
Watchdog Timer
1024´14 program memory ROM
64´8 data memory RAM
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Buzzer driving pair and PFD supported
HALT function and wake-up feature reduce
power consumption
Up to 0.5ms instruction cycle with 8MHz
system clock at V
DD
=5V
All instructions in one or two machine
cycles
14-bit table read instruction
4-level subroutine nesting
Bit manipulation instruction
63 powerful instructions
Low voltage reset function
24-pin SKDIP/SOP package
General Description
The device is an 8-bit high performance
RISC-like microcontroller designed for multi-
ple I/O product applications. The device is par-
ticularly suitable for use in products such as
remote controllers, fan/light controllers, wash-
ing machine controllers, scales, toys and vari-
ous subsystem controllers. A HALT feature is
included to reduce power consumption.
Rev. 1.20
1
July 2, 2001
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
