Download PSD813F1/80C31 Design Tutorial Application Note 057

1 Introduction
This tutorial takes you step-by-step through the development cycle of a PSD813F based design,
from design entry, to programming the device. The first part of this tutorial shows how a
PSD813F1 can be used in conjunction with a handful of other ICs to implement an automatic
gain control (AGC) design. The tutorial also shows how this design would be implemented
using a discrete part solution, and Appendix E reveals the various benefits of using a PSD813F
device versus the discrete solution.
The members of the PSD813F family of programmable system devices are Flash-based
peripherals for use with embedded microcontrollers (MCUs), and are In-System-Programmable
(ISP). These PSDs are designed to easily interface to a variety of 8-bit MCUs and provide them
with memory, logic, and I/O.
Embedded designs are typically bound by cost, size, and power consumption. The market for
products using embedded MCUs is extremely competitive. Time-to-market and quality featuresper-dollar define success. Using a PSD813F device will reduce your:
Cost
Time-to-market
Power consumption
Board space
Design complexity
Chip count.
As you read this document, you will learn how the PSD813F can enhance your MCU, and meet
its needs for:
Flash memory
EEPROM
SRAM
Configurable I/O pins
Programmable logic (both sequential and combinatorial)
Decoded address space
Address expansion
Backup power
Code integrity
Code security
ISP.
All of these features in one cost-effective PSD813F1 device allow the use of a low cost, minimal
feature, ROM-less MCU device.
In addition to giving step-by-step design entry information, this document highlights three areas:
1) ISP using concurrent memory or JTAG
2) MicroCell technology
3) The logic simulation capabilities of PSDsilosIII
WSI Inc. - Fremont CA - 800-832-6974 - waferscale.com
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