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HT95L300 Datasheet

  • HT95L300

  • 8-Bit LCD Type Phone Controller MCU

  • 42頁

  • HOLTEK

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HT95L100/10P
Preliminary
Features
路
Provide MASK type and OTP type version
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Operating voltage range: 2.4V~5.5V
路
Program ROM: 4K麓16 bits
路
Data RAM: 1152麓8 bits
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Up to 20 bidirectional I/O lines
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16-bit table read instructions
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Eight-level subroutine nesting
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Timer:
-
Two 16-bit programmable Timer/Event Counter
-
Real time clock (RTC)
-
Watchdog Timer (WDT)
路
Programmable frequency divider (PFD)
路
Dual system clock: 32768Hz, 3.58MHz
路
Four operating modes: Idle mode, Sleep mode,
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Up to 1.117ms instruction cycle with 3.58MHz system
8-Bit LCD Type Phone Controller MCU
clock
路
Built-in 3.58MHz DTMF Generator
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LCD driver:
-
20 seg.麓8 com.
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4 segments can per nibble option to bidirectional
I/O lines
-
LCD contrast can be adjusted by software or exter-
nal resistor
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Fixed frame frequency 64Hz
路
Built-in Low Battery detector
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All instructions in one or two machine cycles
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Built-in dialer I/O
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64-pin QFP package
Green mode and Normal mode
Applications
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Deluxe Feature Phone
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Caller ID Phone
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Cordless Phone
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Fax and answering machines
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Other communication system
General Description
The HT95L100/10P are 8-bit high performance
RISC-like microcontrollers with built-in DTMF generator
and dialer I/O which provide MCU dialer implementation
or system control features for telecom product applica-
tion. The phone controller has a built-in program ROM,
data RAM, LCD driver and a maximum of 20 I/O lines for
high end products design. In addition, for power man-
agement purpose, it has a built-in frequency up conver-
sion circuit (32768Hz to 3.58MHz) which provides dual
system clock and four types of operation modes. For ex-
ample it can operate with low speed system clock rate of
32768Hz in green mode with little power consumption. It
can also operate with high speed system clock rate of
3.58MHz in normal mode for high performance opera-
tion. To ensure smooth dialer function and to avoid MCU
shut-down in extreme low voltage situation, the dialer
I/O circuit is built-in to generate hardware dialer signals
such as on-hook, hold-line and hand-free. Built-in real
time clock and programmable frequency divider are pro-
vided for additional fancy features in product develop-
ments. The device is best suitable for feature phone
products that comply with versatile dialer specification
requirements of different areas or countries.
Rev. 0.10
1
October 1, 2002

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