Intel Microcontroller manual 8XC196NP, 80C196NU USER’S Manual

8XC196NP, 80C196NU USER’S MANUAL

Chapter 8 — Serial I/O (SIO) Port — describes the asynchronous/synchronous serial I/O (SIO) port and explains how to program it.

Chapter 9 —Pulse-width Modulator — provides a functional overview of the pulse width mod- ulator (PWM) modules, describes how to program them, and provides sample circuitry for con- verting the PWM outputs to analog signals.

Chapter 10 — Event Processor Array (EPA) — describes the event processor array, a tim- er/counter-based, high-speed input/output unit. It describes the timer/counters and explains how to program the EPA and how to use the EPA to produce pulse-width modulated (PWM) outputs.

Chapter 11 — Minimum Hardware Considerations — describes options for providing the ba-

sic requirements for device operation within a system, discusses other hardware considerations, and describes device reset options.

Chapter 12 — Special Operating Modes — provides an overview of the idle, powerdown, standby, and on-circuit emulation (ONCE) modes and describes how to enter and exit each mode.

Chapter 13 — Interfacing with External Memory — lists the external memory signals and de-

scribes the registers that control the external memory interface. It discusses the chip selects, mul- tiplexed and demultiplexed bus modes, bus width and memory configurations, the bus-hold protocol, write-control modes, and internal wait states and ready control. Finally, it provides tim- ing information for the system bus.

Appendix A — Instruction Set Reference — provides reference information for the instruction set. It describes each instruction; defines the processor status word (PSW) flags; shows the rela- tionships between instructions and PSW flags; and lists hexadecimal opcodes, instruction lengths, and execution times. (For additional information about the instruction set, see Chapter 4, “Programming Considerations.”)

Appendix B — Signal Descriptions — provides reference information for the device pins, in- cluding descriptions of the pin functions, reset status of the I/O and control pins, and package pin assignments.

Appendix C — Registers — provides a compilation of all device special-function registers (SFRs) arranged alphabetically by register mnemonic. It also includes tables that list the win- dowed direct addresses for all SFRs in each possible window.

Glossary — defines terms with special meaning used throughout this manual.

Index — lists key topics with page number references.

1-2