Z89176

PRELIMINARY PRODUCT SPECIFICATION 1 Z89175 Z89176 (ROMLESS) VOICE PROCESSING CONTROLLERS FEATURES Device Z89175 Z89176 ROM (KB) 24 RAM* (Bytes) 256 256 I/O Lines 47 31 Voltage Range 4.5V to 5.5V 4.5V to 5.5V s s s s s s s s s s s s s 1 2 Clock Speeds of 20.48 or 29.49 MHz 16-Bit Digital Signal Processor (DSP) 8K Word DSP Program ROM 512 Words On-Chip DSP RAM 8-Bit A/D Converter with up to 16 kHz Sample Rate 10-Bit PWM D/A Converter Six Vectored, Prioritized Z8 Interrupts Three Vectored, Prioritized DSP Interrupts Two DSP Timers to Support Different A/D and D/A Sampling Rates IBM® PC-Based Development Tools Developer’s Toolbox for T.A.M. Applications Note: *General-Purpose s s s Watch-Dog Timer and Power-On Reset Improved Low Power Stop Mode On-Chip Oscillator which Accepts a Crystal or External Clock Drive Improved Global Power-Down Mode s Low Power Consumption - 200 mW (typical) Two Comparators RAM and ROM Protect On-Board Oscillator for 32.768 kHz Real-Time Clock s s GENERAL DESCRIPTION The Z89175/176 is a fully integrated, dual processor controller designed for voice processing applications. The I/O control processor is a Z8® with 24 KB of program memory, two 8-bit counter/timers, and up to 47 I/O pins. The DSP is a 16-bit processor with a 24-bit ALU and accumulator, 512x16 bits of RAM, single cycle instructions, and 8K words of program ROM. The chip also contains a half-flash 8-bit A/D converter with up to a 16 kHz sample rate and a 10-bit PWM D/A converter. The...