HT48R50A-1/HT48C50-1
I/O Type 8-Bit MCU
Technical Document
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Features
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Operating voltage:
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4096´15 program memory ROM
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160´8 data memory RAM
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Buzzer driving pair and PFD supported
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HALT function and wake-up feature reduce power
f
SYS
=4MHz: 2.2V~5.5V
f
SYS
=8MHz: 3.3V~5.5V
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Low voltage reset function
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35 bidirectional I/O lines (max.)
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1 interrupt input shared with an I/O line
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8-bit programmable timer/event counter with overflow
consumption
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6-level subroutine nesting
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Up to 0.5ms instruction cycle with 8MHz system clock
interrupt and 8-stage prescaler
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16-bit programmable timer/event counter and over-
at V
DD
=5V
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Bit manipulation instruction
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15-bit table read instruction
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63 powerful instructions
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All instructions in one or two machine cycles
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28-pin SKDIP/SOP, 48-pin SSOP package
flow interrupts
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On-chip RC oscillator, external crystal and RC oscil-
lator
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32768Hz crystal oscillator for timing purposes only
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Watchdog Timer
General Description
The HT48R50A-1/HT48C50-1 are 8-bit high perfor-
mance, RISC architecture microcontroller devices spe-
cifically designed for multiple I/O control product
applications. The mask version HT48C50-1 is fully pin
and functionally compatible with the OTP version
HT48R50A-1 device.
The advantages of low power consumption, I/O flexibil-
ity, timer functions, oscillator options, HALT and
wake-up functions, watchdog timer, buzzer driver, as
well as low cost, enhance the versatility of these devices
to suit a wide range of application possibilities such as
industrial control, consumer products, subsystem con-
trollers, etc.
Rev. 2.00
1
March 8, 2006
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
