HT45R34
C/R to F Type 8-Bit OTP MCU
Technical Document
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Features
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Operating voltage:
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Power Down and Wake-up function reduce power
f
SYS
=4MHz: 2.2V~5.5V
f
SYS
=8MHz: 3.3V~5.5V
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8 bidirectional I/O lines
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Two external interrupt inputs shared with I/O lines
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8-bit programmable timer/event counter with
consumption
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Up to 0.5ms instruction cycle with 8MHz system clock
at V
DD
=5V
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All instructions executed in one or two machine
cycles
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14-bit table read instruction
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Four-level subroutine nesting
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Bit manipulation instruction
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63 powerful instructions
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Low voltage reset function
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20-pin DIP/SOP packages
overflow interrupt and 7-stage prescaler
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External RC oscillation converter
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On-chip crystal and RC oscillator
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Watchdog Timer
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Multi-pin capacitor/resistor sensor input
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1024´14 program memory
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88´8 data memory RAM
24-pin SKDIP/SOP packages
General Description
The HT45R34 is an 8-bit high performance, RISC archi-
tecture microcontroller device specifically designed for
cost-effective multiple I/O control product applications.
The advantages of low power consumption, I/O flexibil-
ity, timer functions, oscillator options, Power Down and
wake-up functions, Watchdog Timer, enhance the ver-
satility of these devices to suit a wide range of applica-
tion possibilities such as industrial control, consumer
products, subsystem controllers, etc.
Rev. 1.20
1
October 15, 2007
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
