DescriptionThe Z8036 Z-CIO Counter/Timer and Parallel I/O element is a general-purpose peripheral circuit, satisfying most counter/timer and parallel I/O needs encountered in system designs. This versatile device contains three I/O ports and three counteritimers. Many programmable options tailor its configuration to specific applications. The use of the device is simplified by making all internal registers (command, status, and data) readable and (except for status bits) writable. In addition, each register is given its own unique address so that it can be accessed directly-no special sequential operations are required. The Z-CIO is directly Z-Bus compatible.
The features of Z08036 can be summarized as (1)two independent 8-bit, double-buffered, bidirectional I/O ports plus a 4-bit special-purpose I/O port. I/O ports feature programmable polarity, programmable direction (Bit mode), "pulse catchers," and programmable open- drain output; (2)four handshake modes, including 3-wire (like the IEEE-488); (3)REQUEST/WAIT signal for high-speed data transfer; (4)flexible pattern-recognition logic, programmable as a 16-vector interrupt controller; (5)three independent 16-bit counter/timers with up to four external access lines per counteritimer (count input, output, gate, and trigger), and three output duty cycles (pulsed, one-shot, and square-wave), programmable as retriggerable or nonretriggerable; (6)easy to use since all registers are readlwrite and directly addressable..
The absolute maximum ratings of Z08036 are (1)absolute voltages on all pins with respect maximum to GND: - 0.3V to + 7.0V; (2)operating ambient temperature see ordering information storage temperature: - 65°C to + 150°C(Stresses greater than those listed under Absolute Maxi- mum Ratings may cause permanent damage to the device. This is a stress rating only; operation of the device at any condition above those indicated in the operational sections of these specifications is not implied. Exposure to absolute maximum rating conditions ior extended periods may affect device reliability.).
Z08036 Data Sheet
