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HT47C20 Datasheet

  • HT47C20

  • 8-Bit Microcontroller

  • 56頁

  • HOLTEK

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HT47C20
8-Bit Microcontroller
Features
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Operating voltage: 2.4V~3.6V
Eight bidirectional I/O lines
Four input lines
One interrupt input
One 16-bit programmable timer/event
counter with PFD (programmable
frequency divider) function
On-chip crystal and RC oscillator for system
clock
One 32.768kHz crystal oscillator for real
time clock
Watchdog timer
2K
麓
16 program memory ROM
64
麓
8 data memory RAM
One Real Time Clock (RTC)
One 8-bit prescaler for RTC
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One buzzer output
Halt function and wake-up feature reduce
power consumption
LCD bias C type
One LCD driver with 20
麓
3 or 19
麓
4 segments
One 38kHz or 40kHz IR carrier output
(455kHz or 480kHz system clock only)
Two channels RC type A/D converter
Four-level subroutine nesting
Bit manipulation instruction
16-bit table read instruction
Up to 8.3ms instruction cycle with 480kHz
system clock
All instructions in one or two machine cycles
63 powerful instructions
General Description
The HT47C20 is an 8-bit high performance
RISC-like microcontroller. Its single cycle in-
struction and two-stage pipeline architecture
make high speed applications. The device is
suited for use in multiple LCD low power
applications among which are calculators, clock
timers, games, scales, toys, thermometers, hy-
grometers, body thermometers, capacitor scaler,
other hand held LCD products, and battery sys-
tems in particular.
1
January 18, 2000

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