Z89167 Datasheet | Zilog.

FEATURES s Part Number Z8 ROM (KBytes) Z8 RAM- (KBytes) 236 236 236 236 236 Speed (MHz) 20 20 24 24 24 s s 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 parators 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 Z89165 24 Z89166 ROMless Z89167 24 Z89168 ROMless Z89169 32 - General-Purpose s s Part Number Z89165 Z89166 Z89167 Z89168 Z89169 DSP ROM (Words) 6K 6K 8K 8K 8K DSP RAM (Words) 512 512 512 512 512 Speed (MHz) 20 20 24 24 24 s s s s s s s 68- and 84-Pin PLCC Packages 4.5- to 5.5-Volt Operating Range Low-Power Consumption (200 m W Typical) s s s 0°C to +70°C Temperature Range GENERAL DESCRIPTION Zilog's Digital Voice Processor Controller family bines 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. The dual-processor architecture is loosely coupled by mailbox registers and an interrupt system, enabling DSP or Z8 programs to be directed by events in each other's domain. The Z8 microcontroller uses an expanded register file to allow access to register-mapped peripheral and I/O circuits for programming versatility. The 16-bit DSP processor features a 24-bit ALU and accumulator with single-cycle instructions, providing the algorithm processing power necessary for telephone voice quality. The Z89165/166 devices offer a half-flash 8-bit A/D converter with up to 128 k Hz sample rate and a 10-bit Pulse-Width modulator (PWM) D/A converter, eliminating the need for an external CODEC. The Z89167/168/169 devices feature a...