Z86217

P R E L I M I N A R Y Z86217/C17 CP95KEY1000 PRELIMINARY CUSTOMER PROCUREMENT SPECIFICATION Z86217/C17 CMOS Z8® 8-BIT MICROCONTROLLERS (POINTING DEVICE/TRACKBALL) FEATURES Part Number Z86217 Z86C17 * General-Purpose ROM (Kbytes) 2 2 RAM* (Bytes) 124 124 I/O Lines 14 14 Speed (MHz) 4 4 s s s s s s s Permanent Watch-Dog Timer (WDT) Oscillator Filter Two Programmable 8-Bit Counter/Timers Low-EMI Operation Scalable Trip-Point Buffer On-Board Pull-Up Resistors High Drive Ports Can Sink 20 mA Per Pin, with Three Pins Maximum s s s 18-Pin DIP and SOIC Packages 3.0- to 5.5-Volt Operating Range 0°C to 70°C Operating Temperature Range GENERAL DESCRIPTION The Z86217/C17 are members of Zilog's Z8® family of microcontrollers designed to reduce external system components and offer easy software/hardware development tools for pointing device and trackball applications. The devices feature on-board pull-up resistors, and a scalable trip-point buffer to accommodate opto-transistor outputs. The high drive ports are capable of up to 20 mA (at VOL = 0.8-volt) current sinking per pin, with three pins maximum, providing extra sinking current capability. The Z86217/C17's permanently enabled Watch-Dog Timer (WDT) operates upon power-up of the MCU, and provides added operational reliability for pointing device and trackball environments. An oscillator filter assists in separating out high-frequency noise from the oscillator input pin. Two on-chip counter/timers with a large number of sele...