HT46RU66/HT46CU66
A/D Type 8-Bit MCU with LCD
Technical Document
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Features
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Operating voltage:
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8-bit RTC prescaler
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Watchdog Timer
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Buzzer output function
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Crystal, RC and 32768Hz crystal system oscillator
f
SYS
=4MHz: 2.2V~5.5V
f
SYS
=8MHz: 3.3V~5.5V
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32 bidirectional I/O lines
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Two external interrupt inputs
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Two 16-bit programmable timer/event counters with
option
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Power down and wake-up functions reduce power
Programmable Frequency Divider, PFD, function
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One 8-bit programmable timer/event counter with
consumption
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16-level subroutine nesting
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8-channel 12-bit resolution A/D converter
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4-channel PWM output shared with 4 I/O lines
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Bit manipulation instruction
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16-bit table read instruction
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Up to 0.5ms instruction cycle with 8MHz system clock
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63 powerful instructions
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Instruction execution within 1 or 2 machine cycles
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Low voltage reset/detector function
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52-pin QFP, 56-pin SSOP, 100-pin QFP packages
source clock prescaler
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47´3 or 46´4 segment LCD driver with logic
output option for SEG0~SEG23)
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16K´16 program memory
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576´8 data memory RAM
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Universal Asynchronous Receiver Transmitter
(UART)
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PFD function for sound generation
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Real Time Clock - RTC
General Description
The HT46RU66/HT46CU66 are 8-bit, high perfor-
mance, RISC architecture microcontroller devices spe-
cifically designed for A/D product applications that
interface directly to analog signals and which require an
LCD Interface. The HT46CU66 mask version device, is
fully pin and functionally compatible with its sister
HT46RU66 OTP device.
The advantages of low power consumption, I/O flexibility,
timer functions, oscillator options, multi-channel A/D
Converter, Pulse Width Modulation function, Power
Down and Wake-up functions, in addition to a flexible
and configurable LCD interface enhance the versatility of
these devices to control a wide range of applications re-
quiring analog signal processing and LCD interfacing,
such as electronic metering, environmental monitoring,
handheld measurement tools, motor driving, etc. for both
the industrial and home appliance application areas.
Rev. 1.20
1
October 2, 2007
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
