HT95CXXX Datasheet, PDF (1/51 Pages) Holtek Semiconductor Inc – CID Type Phone 8-Bit MCU

HT95CXXX
CID Type Phone 8-Bit MCU
Features
· Provide MASK type and OTP type version
· Operating voltage range:
- FSK: 3.0V~5.5V
- Others: 2.4V~5.5V
· Program ROM
- HT95C400/40P: 16K´16 bits
- HT95C300/30P: 8K´16 bits
- HT95C200/20P: 8K´16 bits
· Data RAM
- HT95C400/40P: 2880´8 bits
- HT95C300/30P: 2112´8 bits
- HT95C200/20P: 1152´8 bits
· Bidirectional I/O lines
- HT95C400/40P: 40~28 I/O lines
- HT95C300/30P: 28~16 I/O lines
- HT95C200/20P: 28~20 I/O lines
· 16-bit table read instructions
· Subroutine nesting
- HT95C400/40P: 12 levels
- HT95C300/30P: 8 levels
- HT95C200/20P: 8 levels
· Timer
- Two 16-bit programmable Timer/Event Counter
- Real time clock (RTC)
- Watchdog Timer (WDT)
Applications
· _{Deluxe Feature Phone}
· _{Caller ID Phone}
· _{Cordless Phone}
· Programmable frequency divider (PFD)
· Dual system clock: 32768Hz, 3.58MHz
· Four operating modes: Idle mode, Sleep mode,
Green mode and Normal mode
· Up to 1.117ms instruction cycle with 3.58MHz system
clock
· All instructions in one or two machine cycles
· Built-in 3.58MHz DTMF Generator
· Built-in FSK decoder:
- Supports Bell 202 and V.23
- Supports ring and line reversal detection
· Built-in dialer I/O
· Built-in low battery detector
· LCD driver
- LCD contrast can be adjusted by software or exter-
nal resistor
- 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
- HT95C400/40P: 48 seg.´16 com.
- HT95C300/30P: 48 seg.´16 com.
- HT95C200/20P: 24 seg.´16 com.
· 128-pin QFP package
· _{Fax and answering machines}
· _{Other communication system}
General Description
The HT95CXXX family MCU are 8-bit high performance
RISC-like microcontrollers with built-in DTMF generator,
FSK decoder and dialer I/O which provide MCU dialer
implementation or system control features for telecom
product applications. The phone controller has a built-in
program ROM, data RAM, LCD driver and 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 consump-
tion. It can also operate with high speed system clock
rate of 3.58MHz in normal mode for high performance
operation. 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 di-
aler signals such as on-hook, hold-line and hand-free.
Built-in real time clock and programmable frequency di-
vider are provided for additional fancy features in prod-
uct developments. The device is best suited for feature
phone products that comply with versatile dialer specifi-
cation requirements of different areas or countries.
Rev. 1.50
1
May 26, 2005