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Numéro de sérieHT95R34
CategorieMicrocontrollers => 8 bit
DescriptionI/O Type Phone 8-bit MCU With DTMF Receiver
The HT95R34 MCU is an 8-bit high performance, RISC architecture microcontroller device specially designed for telephone applications. Device flexibility is enhanced with their internal special features such as power-down and wake-up functions, DTMF generator, DTMF receiver, PFD driver, etc. These features combine to ensure applications require a minimum of external components and therefore reduce overall product costs
SociétéHoltek Semiconductor Inc.
DatasheetTélécharger HT95R34 datasheet
 
 
  • Description courte
  • · Tools Information· FAQs· Application Note - HA0075E MCU Reset and Oscillator Circuits Application Note

    Features

    · Operating voltage at fSYS= 2.2V~5.5V· 8K´16 OTP type Program Memory· 2112´8 Data Memory· 26 bidirectional I/Os with pull-high options· 2 NMOS output-only lines· External interrupt input· Dual 16-bit timers with interrupts· Timer external input· 8-level stack· 32768Hz system oscillator· to 3.58MHz frequency-up PLL circuit· Real time clock function· Watchdog timer function· PFD driver output· DTMF generator· DTMF receiver· Power-down and wake-up feature for power-saving

    operation: Idle mode, Sleep mode, Green mode and normal mode

    · Bit manipulation instructions· Table read function· 63 powerful instructions· All instructions executed or 2 machine cycles· Low voltage reset function· Supported by comprehensive suite of hardware and

    The HT95R34 MCU an 8-bit high performance, RISC architecture microcontroller device specially designed for telephone applications. Device flexibility is enhanced with their internal special features such as power-down and wake-up functions, DTMF generator, DTMF receiver, PFD driver, etc. These features combine to ensure applications 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 deluxe feature phone, cordless phones, fax and answering machines, etc. The device is best suited for phone products that comply with versatile dialer specification requirements for different areas or countries. The device is fully supported by the Holtek range of fully functional development and programming tools, providing a means for fast and efficient product development cycles.

    Pad Name I/O Options Description Bidirectional 8-bit input/output port. Each individual pin on this port can be configured as a wake-up input by a configuration option. Software instructions determine if the pin is a CMOS output or Schmitt Trigger input. Configuration options determine which pins on the port have pull-high resistors. Bidirectional input/output port. Software instructions determine if the pin is a CMOS output or Schmitt Trigger input. Configuration options determine which pins on the port have pull-high resistors. When the multi-function interrupt is enabled an interrupt will be generated whenever or PC5 has a falling edge, or PC7 has a rising edge.When in the idle mode such an interrupt will wake up the device. Bidirectional input/output port. Software instructions determine if the pin is a CMOS output or Schmitt Trigger input. Configuration options determine which pins on the port have pull-high resistors. NMOS output structures Bidirectional 8-bit input/output port.Software instructions determine if the pin is a CMOS output or Schmitt Trigger input. Configuration options determine which nibble on the port have pull-high resistors. Bidirectional 4-bit input/output port.Software instructions determine if the pin is a CMOS output or Schmitt Trigger input. Configuration options determine if all the pins on the port have pull-high resistors. External interrupt Schmitt trigger input. Edge trigger activated on high to low transition. No pull-high resistor. Timer/Event Counter 0 Schmitt trigger input. No pull-high resistor. Timer/Event Counter 1 Schmitt trigger input. No pull-high resistor. Dual Tone Multi Frequency Output CMOS output structure Programmable Frequency Divider pin. Tone acquisition time and release time can be set through connection with external resistor and capacitor CMOS IN/OUT Early steering output CMOS out Operational amplifier non-inverting input Operational amplifier inverting input Operational amplifier output terminal Reference voltage output, normally VDD/2 X1 and X2 are connected to an external 32768Hz crystal or resonator for the system clock. External low pass filter pin used for the frequency up conversion circuit. Schmitt trigger reset input. Active low. Positive power supply Negative power supply, ground. DTMF receiver positive power supply DTMF receiver negative power supply

    Each pin on PA can be programmed through a configuration option to have a wake-up function.