HT46RU25/HT46CU25
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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System clock (f
SYS
): 400kHz~8MHz, 32.768kHz
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48 bidirectional I/O lines (max.)
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One interrupt input shared with an I/O line
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One 8-bit and two 16-bit programmable timer/event
at V
DD
=5V
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16-level subroutine nesting
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8-channels 12-bit resolution A/D converter
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4-channels (6+2)/(7+1)-bit PWM output shared with
four I/O lines
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Universal Asynchronous Receiver Transmitter
counter with prescaler and PFD (programmable
frequency divider) function and overflow interrupt
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16K´16 program memory in two banks (Bank 0, 1)
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576´8 (192´3) data memory RAM
(UART)
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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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48/56-pin SSOP package
(address from 040H~0FFH, bank 0~2)
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On-chip crystal and RC oscillator
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Watchdog Timer
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Supports PFD for sound generation
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Real Time Clock (RTC) with 8-bit prescaler
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HALT function and wake-up feature reduce power
consumption
General Description
The HT46RU25/HT46CU25 are 8-bit, high performance,
RISC architecture microcontroller devices specifically
designed for A/D applications that interface directly to an-
alog signals, such as those from sensors. The mask ver-
sion HT46CU25 is fully pin and functionally compatible
with the OTP version HT46RU25 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, UART function, I
2
C inter-
face, HALT and wake-up functions, enhance the versa-
tility of these devices to suit a wide range of A/D
application possibilities such as sensor signal process-
ing, motor driving, industrial control, consumer prod-
ucts, subsystem controllers, etc.
I
2
C is a trademark of Philips Semiconductors.
Rev. 1.30
1
March 9, 2007
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
