Z89136

PRELIMINARY PRODUCT SPECIFICATION 1 Z89135/Z89136 LOW-COST DTAD CONTROLLER FEATURES Device Z89135 Z89136 s s s s s s s s s s s s s s s s 1 ROM (KB) 24 24 RAM* (Bytes) 256 256 I/O Lines 47 47 Speed (MHz) 20 20 Clock Speed of 20.48 MHz 16-Bit Digital Signal Processor (DSP) 6K Word DSP Program ROM 512 Words On-Chip DSP RAM 8-Bit A/D Converter with up to 128 kHz Sample Rate 10-Bit PWM D/A Converter (4 kHz to 64 kHz) Three Vectored, Prioritized DSP Interrupts Two DSP Timers to Support Different A/D and D/A Sampling Rates Z8 and DSP Operation in Parallel IBM® PC-Based Development Tools Developer’s Toolbox for T.A.M. Applications 24 KB of Z8 Program ROM (Z89135) Watch-Dog Timer and Power-On Reset Low Power STOP Mode On-Chip Oscillator which Accepts a Crystal or External Clock Drive Two 8-Bit Z8 Counter Timers with 6-Bit Prescaler Global Power-Down Mode Low Power Consumption - 200 mW (typical) Two Comparators with Programmable Interrupt Priority Six Vectored, Priority Z8 Interrupts RAM and ROM Protect s s s s s s IBM is a registered trademark of International Business Machines Corp. GENERAL DESCRIPTION The Z89135/136 is a fully integrated, dual processor controller designed for low-cost digital telephone answering machines. The I/O control processor is a Z8® MCU 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, 512 x 16 bits of RAM, single cycle instructions, and 6K word program ...