HT95LXXX
LCD Type Phone 8-Bit MCU
Features
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Provide MASK type and OTP type version
Operating voltage range: 2.4V~5.5V
Program ROM
Programmable frequency divider (PFD)
Supported for HT95L400/40P, HT95L300/30P,
HT95L200/20P, HT95L100/10P
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Dual system clock: 32768Hz, 3.58MHz
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HT95L400/40P: 16K´16 bits
HT95L300/30P: 8K´16 bits
HT95L200/20P: 8K´16 bits
HT95L100/10P: 4K´16 bits
HT95L000/00P: 4K´16 bits
Four operating modes: Idle mode, Sleep mode,
Green mode and Normal mode
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Up to 1.117ms instruction cycle with 3.58MHz system
clock
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All instructions in one or two machine cycles
Built-in 3.58MHz DTMF Generator
Built-in dialer I/O
Data RAM
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HT95L400/40P: 2880´8 bits
HT95L300/30P: 2112´8 bits
HT95L200/20P: 1152´8 bits
HT95L100/10P: 1152´8 bits
HT95L000/00P: 384´8 bits
Built-in low battery detector
Supported for HT95L400/40P, HT95L300/30P,
HT95L200/20P, HT95L100/10P
Bidirectional I/O lines
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LCD driver
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HT95L400/40P: 40~28 I/O lines
HT95L300/30P: 28~16 I/O lines
HT95L200/20P: 28~20 I/O lines
HT95L100/10P: 20~16 I/O lines
HT95L000/00P: 18~14 I/O lines
LCD contrast can be adjusted by software or exter-
nal resistor
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Support two LCD frame frequency 64Hz, 128Hz
Support 16 or 8 common driver pins
Some segments or commons can option to
bidirectional I/O lines
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16-bit table read instructions
Subroutine nesting
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HT95L400/40P: 48 seg.´16 com.
HT95L300/30P: 48 seg.´16 com.
HT95L200/20P: 24 seg.´16 com.
HT95L100/10P: 20 seg.´8 com.
HT95L000/00P: 16 seg.´8 com.
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HT95L400/40P: 12 levels
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HT95L300/30P: 8 levels
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HT95L200/20P: 8 levels
HT95L100/10P: 8 levels
HT95L000/00P: 4 levels
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HT95L400/40P: 128-pin QFP package
HT95L300/30P: 100-pin QFP package
HT95L200/20P: 100-pin QFP package
HT95L100/10P: 64-pin QFP package
HT95L000/00P: 56-pin SSOP package
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Timer
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Two 16-bit programmable Timer/Event Counter
Real time clock (RTC)
Watchdog Timer (WDT)
Applications
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Deluxe Feature Phone
Caller ID Phone
Fax and answering machines
Other communication system
Cordless Phone
General Description
The HT95LXXX family MCU 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-
tions. The phone controller has a built-in program ROM,
data RAM, LCD driver and I/O lines for high end prod-
ucts design. In addition, for power management pur-
pose, it has a built-in frequency up conversion circuit
(32768Hz to 3.58MHz) which provides dual system
clock and four types of operation modes. For example, 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 suited for feature phone
products that comply with versatile dialer specification
requirements of different areas or countries.
Rev. 1.50
1
May 27, 2005