HT46RU26/HT46CU26
A/D Type 8-Bit MCU with UART
Technical Document
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Features
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Operating voltage:
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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 8-bit PWM outputs shared with
f
SYS
=4MHz: 2.2V~5.5V
f
SYS
=8MHz: 3.3V~5.5V
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48 bidirectional I/O lines
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External interrupt input shared with I/O line
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Single 8-bit Timer/Event Counter
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Two 16-bit Programmable Timer/Event Counters
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32K
´16
Program Memory in 4 banks
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768
´
8 byte Data Memory in 4 banks
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Integrated Crystal and RC oscillators
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Watchdog Timer function
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PFD for audio frequency generation
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Power down and wake-up functions to reduce power
I/O lines
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Real Time Clock with 8-bit prescaler
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Universal Asynchronous Receiver Transmitter
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UART
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I
2
C Bus slave function
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SPI Bus
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Bit manipulation instructions
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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
consumption
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Up to 0.5ms instruction cycle with 8MHz system clock
cycles
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Low voltage reset function
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48/56-pin SSOP package types
at V
DD
=5V
General Description
The HT46RU26/HT46CU26 is an 8-bit high perfor-
mance RISC architecture microcontrollers, designed
especially for applications that interface directly to ana-
log signals, such as those from sensors.
The device includes an integrated multi-channel Analog
to Digital Converter in addition to four Pulse Width Mod-
ulator outputs. The usual Holtek MCU features such as
power down and wake-up functions, oscillator options,
programmable frequency divider, etc. combine to en-
sure user applications require a minimum of external
components.
With a fully integrated UART function and both SPI and
I
2
C interfaces, a convenient means is provided for easy
and efficient interfacing to external personal computers
or other external hardware.
The benefits of these combined integrated functions, in
addition to low power consumption, high performance,
I/O flexibility and low-cost, provide these devices with
the versatility to suit a wide range of application possibil-
ities such as sensor signal processing, motor driving, in-
dustrial control, consumer products, subsystem
controllers, etc.
The HT46CU26 is under development and will be avail-
able soon.
Rev. 1.00
1
June 12, 2008
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
