HT95C200/20P/300/30P
8-Bit CID Type Phone Controller MCU
Rev. 0.10
1
October 1, 2002
Features
Provide MASK type and OTP type version
Operating voltage range:
FSK: 3.0V~5.5V
Others: 2.4V~5.5V
Program ROM: 8K 16 bits
Data RAM:
HT95C300/30P: 2112 8 bits
HT95C200/20P: 1152 8 bits
Up to 28 bidirectional I/O lines
16-bit table read instructions
Eight-level subroutine nesting
Timer:
Two 16-bit programmable Timer/Event Counter
Real time clock (RTC)
Watchdog Timer (WDT)
Programmable frequency divider (PFD)
Dual system clock: 32768Hz, 3.58MHz
Four operating modes: Idle mode, Sleep mode,
Green mode and Normal mode
Up to 1.117 s instruction cycle with 3.58MHz system
clock
Built-in 3.58MHz DTMF Generator
Built-in FSK decoder:
Supports Bell 202 and V.23
Supports ring and line reversal detection
LCD driver:
HT95C300/30P: 48 seg. 16 com.
HT95C200/20P: 24 seg. 16 com.
Support 16 or 8 common driver pins
HT95C300/30P: 12 segments can per nibble op-
tion to bidirectional I/O lines
HT95C200/20P: 8 commons can per byte option to
bidirectional I/O lines
LCD contrast can be adjusted by software or exter-
nal resistor
Support two LCD frame frequency 64Hz, 128Hz
Built-in Low Battery detector
All instructions in one or two machine cycles
Built-in dialer I/O
128-pin QFP package
Applications
Deluxe Feature Phone
Caller ID Phone
Cordless Phone
Fax and answering machines
Other communication system
Preliminary
General Description
The HT95C200/20P/300/30P are 8-bit high perfor-
mance 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 application. The phone controller
has a built-in program ROM, data RAM, LCD driver and
a maximum of 28 I/O lines for high end products design.
In addition, for power management purpose, 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 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 dialer signals such as
on-hook, hold-line and hand-free.
clock and programmable frequency divider are provided
for additional fancy features in product developments.
The device is best suitable for feature phone products
that comply with versatile dialer specification require-
ments of different areas or countries.
Built-in real time