HT95R64 Datasheet, PDF (1/82 Pages) Holtek Semiconductor Inc – CID Phone 8-Bit MCU with CPT

HT95R64/HT95R65
CID Phone 8-Bit MCU with CPT
Technical Document
· Application Note
- HA0075E MCU Reset and Oscillator Circuits Application Note
Features
· Operating voltage:
f_SYS=3.58MHz: 2.2V~5.5V
f_SYS=7.16MHz: 3.0V~5.5V
f_SYS=10.74MHz: 3.0V~5.5V
f_SYS=14.32MHz: 4.5V~5.5V
· Program Memory:
8K´16 (HT95R64)
16K´16 (HT95R65)
· 2112´8 Data Memory
· 38 bidirectional I/Os with pull-high options
· 2 NMOS output-only lines
· External interrupt input
· Three 16-bit timers with interrupts
· Timer external input
· 8-level stack
· 32768Hz system oscillator
· 32768Hz up to 14.32MHz frequency-up circuit
· Real time clock function
· _{Watchdog timer function}
· _{PFD driver output}
· _{Serial Interfaces Module: SIM for SPI or I}²_C
· _{Internal DTMF generator}
· Internal DTMF receiver
· Internal FSK decoder
- Support Bell 202 and V.23
- Support ring and line reverse detection
· 12-bit Audio DAC output
· Power-down and wake-up feature for power-saving
operation: Idle mode, Sleep mode, Green mode
and Normal mode
· Up to 0.28ms instruction cycle with 14.32MHz
system clock at V_DD=4.5V~5.5V
· Bit manipulation instructions
· Table read function
· 63 powerful instructions
· All instructions executed in 1 or 2 machine cycles
· Low voltage reset function
· Supported by comprehensive suite of hardware
and software tools
· Internal low battery detector
· _{Software Controlled R-Type LCD Driver (SCOM)}
· _{Internal Call Progress Tone (CPT) detector}
· _{64/80-pin LQFP package}
General Description
The series of CID phone MCU are 8-bit high perfor-
mance, RISC architecture microcontroller devices spe-
cially designed for telephone applications. Devices
flexibility are enhanced with their internal special fea-
tures such as power-down and wake-up functions,
DTMF generator, DTMF receiver, FSK decoder, CPT
detector, PFD driver, SPI and I²C interface, audio DAC
output, etc. These features combine to ensure applica-
tions require a minimum of external components and
therefore reduce overall product costs.
Having the advantages of low-power consumption,
high-performance, I/O flexibility as well as low-cost,
these devices have the versatility to suit a wide range of
application possibilities such as FSK & DTMF mode
Caller ID phone, Home Security products, deluxe fea-
ture phones, cordless phones, fax and answering ma-
chines, etc.
The call progress tone detector is for Auto-dialing sys-
tem use. Switched capacitors technology is imple-
mented into the chip to get good performance
characteristics of band pass filter in the range of 305Hz
to 640Hz call progress tone which is dual tone
multi-frequency signal. When it detected CPT signal
then it generates relative envelopes for external
microcontroller decision to finish different kinds of CPT
signal detection such as dial tone, busy tone, ring-back
tone and reorder tone.
The device will be ideally suited for phone products that
comply with versatile dialer specification requirements
for different areas or countries. The device is fully sup-
ported by the Holtek range of fully functional develop-
ment and programming tools, providing a means for fast
and efficient product development cycles.
Rev. 1.00
1
March 3, 2010