HT46R53/HT46R54
A/D Type 8-Bit OTP MCU
Technical Document
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Features
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Low-power fully static CMOS design
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Operating voltage:
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On-chip crystal and RC oscillator
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6-level subroutine nesting
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Watchdog Timer
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Low voltage reset function
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HALT function
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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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Program Memory:
2K´14 OTP (HT46R53)
4K´15 OTP (HT46R54)
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Data memory: 88´8 RAM
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A/D converter: 12bits´8Ch
at V
DD
=5V
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1-channel 8-bit PWM output shared with an I/O line
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PFD function
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Bit manipulation instruction
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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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28-pin SKDIP/SOP package
External A/D converter reference voltage input pin
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22 bidirectional I/O lines
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1 interrupt input shared with an I/O line
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8-bit programmable timer/event counter with over-
flow interrupt and 7-stage prescaler
General Description
The HT46R53/HT46R54 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 advan-
tages of low power consumption, I/O flexibility, timer
functions, oscillator options, multi-channel A/D con-
verter, Pulse Width Modulation function, HALT and
wake-up functions, watchdog timer, as well as low cost,
enhance the versatility of these devices to suit a wide
range of A/D application possibilities such as sensor
signal processing, chargers, motor driving, industrial
control, consumer products, subsystem controllers, etc.
Rev. 1.40
1
July 12, 2005
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
