Z86C84 Datasheet | Zilog.

CUSTOMER PROCUREMENT SPECIFICATION Z86C83/C84 Z8® MCU MICROCONTROLLERS Features Device Z86C83 Z86C84 ROM (KB) 4 4 RAM- (Bytes) 237 237 I/O Lines 21 17 Voltage Range 3.0V to 5.5V 3.0V to 5.5V s Six Vectored, Prioritized Interrupts from Six Different Sources Two Analog parator Inputs with Programmable Interrupt Polarity Two Programmable 8-Bit Timers, each with a 6-Bit Programmable Prescaler Auto Latch Mask Option for P00, P01, and P02 Power-On Reset (POR) Timer Permanent Watch-Dog Timer (WDT) Mask Option Software-Programmable Pull-Up Resistors On-Chip Oscillator for Crystal, Resonator or LC s Note: - General-Purpose s s s s s 28-Pin DIP, SOIC, and PLCC Packages s Clock Speed: 16 MHz s Three Expanded Register Groups s 8-Channel, 8-Bit A/D Converter with Track and Hold, and Unique R-Ladder AGND Offset Control Z86C84 has two 8-Bit D/A Converters Programmable Gain Stages, 3 µs Settling Time with s s s GENERAL DESCRIPTION The Z86C83/C84 Consumer Controller Processors (CCP™) are full-featured members of the CMOS Z8 microcontroller family offering a unique register-to-register architecture that avoids accumulator bottlenecks for higher code efficiency than RISC processors. The Z86C83/C84 are designed to be used in a wide variety of embedded control applications, such as appliances, process controls, keyboards, security systems, battery chargers, and automotive modules. For applications requiring powerful I/O capabilities, the Z86C83/C84 devices can have up to 21/17 (C83/C84 respectively) pins dedicated to input and output. These lines are grouped into three ports, and are configured by software to provide digital/analog I/O timing and status signals. An on-chip, half-flash 8-bit ±1/2 Least Significant Bit (LSB) A/D converter can multiplex up to eight analog inputs. Unused analog inputs revert to standard digital I/O use. Unique, programmable AGND offset control of the A/D resistor ladder presses the converter's dynamic range for maximum effective...