Specifications

Contents
Chapter 12. PARALLEL I/O 12-1
OVERVIEW
.................................................... 12-1
ZT 8832 SPECIFICS
............................................ 12-2
FUNCTIONAL DESCRIPTION
.................................. 12-3
Output Latch
................................................ 12-3
Output Buffer
............................................... 12-4
Input Buffer
................................................ 12-4
PROGRAMMABLE REGISTERS
................................ 12-5
OPERATION
................................................... 12-6
Reset
...................................................... 12-6
Programming the Parallel Ports
............................... 12-6
Programming the Light Emitting Diode
........................ 12-7
Mixing I/O in a Single Port
................................... 12-7
Chapter 13. WATCHDOG TIMER 13-1
OVERVIEW
.................................................... 13-2
ZT 8832 SPECIFICS
............................................ 13-2
FUNCTIONAL DESCRIPTION
.................................. 13-3
Stage 1 Timer
............................................... 13-3
Stage 1 Delay
............................................... 13-4
Stage 2 Timer
............................................... 13-4
Stage 2 Delay
............................................... 13-4
OPERATION
................................................... 13-5
Reset
...................................................... 13-5
Multiple Stages
............................................. 13-6
Changing Time Delays
....................................... 13-7
Programming
............................................... 13-8
Chapter 14. SBX EXPANSION MODULE 14-1
OVERVIEW
.................................................... 14-2
Features
.................................................... 14-3
ZT 8832 SPECIFICS
............................................ 14-4
INSTALLATION
............................................... 14-5
Chapter 15. NUMERIC DATA PROCESSOR (8087) 15-1
OVERVIEW
.................................................... 15-2
ZT 8832 SPECIFICS
............................................ 15-2
INSTALLATION
............................................... 15-3
OPERATION
................................................... 15-4
Coprocessor Interface
........................................ 15-4
Error Handling and Interrupts
................................. 15-6