HT46R232/HT46C232
A/D Type 8-Bit MCU
Technical Document
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Features
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Operating voltage:
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Up to 0.5ms instruction cycle with 8MHz system clock
f
SYS
=4MHz: 2.2V~5.5V
f
SYS
=8MHz: 3.3V~5.5V
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40 bidirectional I/O lines (max.)
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1 interrupt input shared with an I/O line
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Two 16-bit programmable timer/event counter with
at V
DD
=5V
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8-level subroutine nesting
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8 channels 10-bit resolution A/D converter
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4-channel 8-bit PWM output shared with
four I/O lines
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Bit manipulation instruction
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16-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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Low voltage reset function
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I
2
C Bus (slave mode)
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28-pin SKDIP/SOP, 48-pin SSOP packages
overflow interrupt
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On-chip crystal and RC oscillator
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Watchdog Timer
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4096´16 program memory
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192´8 data memory RAM
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Supports PFD for sound generation
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HALT function and wake-up feature reduce power
consumption
General Description
The HT46R232/HT46C232 are 8-bit, high performance,
RISC architecture microcontroller devices specifically
designed for A/D applications that interface directly to
analog signals, such as those from sensors. The mask
version HT46C232 is fully pin and functionally compati-
ble with the OTP version HT46R232 device.
The advantages of low power consumption, I/O flexibil-
ity, programmable frequency divider, timer functions,
oscillator options, multi-channel A/D Converter, Pulse
Width Modulation function, I
2
C interface, HALT and
wake-up functions, enhance the versatility of these de-
vices to suit a wide range of A/D application possibilities
such as sensor signal processing, motor driving, indus-
trial control, consumer products, subsystem controllers,
etc.
I C is a trademark of Philips Semiconductors.
2
Rev. 1.40
1
November 23, 2005
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
