HT46R01A
Small Package A/D 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 functions to reduce power
f
SYS
= 4MHz: 2.2V~5.5V
f
SYS
= 8MHz: 3.3V~5.5V
f
SYS
= 12MHz: 4.5V~5.5V
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7 bidirectional I/O lines and 1 input line
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External interrupt input shared with an I/O line
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Single 8-bit programmable Timer/Event Counters
consumption
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Up to 0.33ms instruction cycle with 12MHz system
clock at V
DD
= 5V
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4-level subroutine nesting
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4-channel 8-bit resolution A/D converter
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8-bit PWM output shared with I/O line
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Bit manipulation instruction
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Table read instructions
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63 powerful instructions
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All instructions executed in one or two machine cy-
with overflow interrupt and 7-stage prescaler
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External crystal system oscillator
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Fully integrated internal RC oscillator available with
three frequencies: 4MHz, 8MHz or 12MHz
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Watchdog Timer function
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PFD for audio frequency generation
cles
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Low voltage reset function
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10-pin ultra-small MSOP package
General Description
The HT46R01A is 8-bit high performance, RISC archi-
tecture microcontroller devices specifically designed for
a wide range of applications. In addition to providing the
usual microcontroller I/O control functions, the fully inte-
grated A/D converter allows the interfacing and pro-
cessing of external analog signals such as those from
sensors. The PWM function also allows the driving of
external analog signals for applications such as motor
driving while the PFD function provides a means of gen-
erating a fixed frequency reference. The usual Holtek
microcontroller features of low power consumption, I/O
flexibility, timer functions, oscillator options, power
down and wake-up functions, watchdog timer and low
voltage reset, combine to provide devices with a huge
range of functional options while still maintaining cost
effectiveness. Their fully integrated system oscillator,
with three frequency selections, and being supplied in
an extremely small outline MSOP 10-pin package
opens up a huge range of new application possibilities
for these devices, some of which may include industrial
control, consumer products, household appliances sub-
system controllers, etc.
Rev. 1.10
1
August 13, 2008
HOLTIC [ HOLT INTEGRATED CIRCUITS ]
