GENERAL DESCRIPTION
Zilogs Digital Voice Processor Controller family combines a Z8® microcontroller and a DSP processor on-chip for a cost-effective turnkey system in digital telephone answering devices and other voice processing applications.

FEATURES
■ Part          Z8 ROM   Z8 RAM* Speed
   Number    (KBytes)   (KBytes) (MHz)
   Z89165     24             236         20
   Z89166     ROMless  236         20
   Z89167     24             236         24
   Z89168     ROMless  236         24
   Z89169     32             236         24
  *General-Purpose
■ Part        DSP ROM   DSP RAM   Speed
   Number  (Words)       (Words)       (MHz)
   Z89165   6K               512              20
   Z89166   6K               512              20
   Z89167   8K               512              24
   Z89168   8K               512              24
   Z89169   8K               512              24
■ 68- and 84-Pin PLCC Packages
■ 4.5- to 5.5-Volt Operating Range
■ Low-Power Consumption (200 mW Typical)
■ 0°C to +70°C Temperature Range
■ 25 Expanded Register Files
■ 47 Input/Output Lines (Z89165)
    31 Input/Output Lines (Z89166)
    43 Input/Output Lines (Core Processor)
■ Six Vectored, Prioritized Z8 Interrupts with Programmable Polarity
■ Three Vectored, Prioritized DSP Interrupts with Programmable Polarity
■ Two Analog Comparators
■ Two Programmable Z8 8-Bit Counter/Timers, Each with Two 6-Bit Programmable Prescaler
■ Watch-Dog Timer /Power-On Reset
■ On-Chip Oscillator that Accepts a Crystal, Ceramic Resonator, LC, RC, or External Clock Drive
■ RAM and ROM Protect, Low-EMI Option