Key Features ........................................................................................................................................................4
PSD3XX Family Feature Summary ......................................................................................................................5
Partial Listing of Microcontrollers Supported ........................................................................................................6
I/O Port Functions ...............................................................................................................................................15
10.2 Port A (PA0-PA7).....................................................................................................................................16
10.2.1 Port A (PA0-PA7) in Multiplexed Address/Data Mode................................................................16
10.2.2 Port A (PA0-PA7) in Non-Multiplexed Address/Data Mode ........................................................17
10.3 Port B (PB0-PB7).....................................................................................................................................18
10.3.1 Port B (PA0-PA7) in Multiplexed Address/Data Mode................................................................18
10.3.2 Port B (PA0-PA7) in Non-Multiplexed Address/Data Mode ........................................................19
10.4 Port C (PC0-PC2) ....................................................................................................................................20
11.4 Programming and Erasure.......................................................................................................................21
Control Signals ...................................................................................................................................................22
12.1 ALE or AS ................................................................................................................................................22
12.2 WR or R/W...............................................................................................................................................22
12.3 RD/E/DS (DS option not available on 3X1 devices) ................................................................................22
12.4 PSEN or PSEN ........................................................................................................................................22
Program/Data Space and the 8031 ....................................................................................................................26
Systems Applications..........................................................................................................................................27
Power Management............................................................................................................................................30
16.2 CMiser Bit ................................................................................................................................................30
16.3 Turbo Bit (ZPSD Only).............................................................................................................................31
16.4 Number of Product Terms in the PAD Logic............................................................................................31
16.5 Composite Frequency of the Input Signals to the PAD Logic..................................................................32
16.6 Loading on I/O Pins .................................................................................................................................33
Calculating Power ...............................................................................................................................................34
18.1 Absolute Maximum Ratings .....................................................................................................................37
18.2 Operating Range .....................................................................................................................................37
18.5 AC/DC Characteristics – PSD3XX/ZPSD3XX (All 5 V devices) ..............................................................38
18.6 AC/DC Characteristics – PSD3XXV (3 V devices only)...........................................................................39
18.7 Timing Parameters – PSD3XX/ZPSD3XX (All 5 V devices)....................................................................40
18.8 Timing Parameters – ZPSD3XXV (3 V devices only) ..............................................................................42
18.9 Timing Diagrams for PSD3XX Parts.......................................................................................................44
18.10 AC Testing ...............................................................................................................................................65
Package Information ...........................................................................................................................................67
22.2 Part Number Construction .......................................................................................................................73
Data Sheet Revision History ...............................................................................................................................80
19
20
21
22
23
ii
Programmable Peripheral
PSD3XX Family
Field-Programmable Microcontroller Peripheral
1.0
Introduction
The low cost PSD3XX family integrates high-performance and user-configurable blocks of
EPROM, programmable logic, and optional SRAM into one part. The PSD3XX products
also provide a powerful microcontroller interface that eliminates the need for external
“glue logic”. The part’s integration, small form factor, low power consumption, and ease of
use make it the ideal part for interfacing to virtually any microcontroller.
The major functional blocks of the PSD3XX include:
•
Two programmable logic arrays
•
256Kb to 1 Mb of EPROM
•
Optional 16 Kb SRAM
•
Input latches
•
Programmable I/O ports
•
Page logic
•
Programmable security.
The PSD3XX family architecture (Figure 1) can efficiently interface with, and enhance,
almost any 8- or 16-bit microcontroller system. This solution provides microcontrollers the
following:
•
Chip-select logic, control logic, and latched address signals that are otherwise
implemented discretely
•
Port expansion (reconstructs lost microcontroller I/O)
•
Expanded microcontroller address space (up to 16 times)
•
An EPROM (with security) and optional SRAM
•
Compatible with 8031-type architectures that use separate Program and Data Space
•
Interface to shared external resources.
1
PSD3XX Family
1.0
Introduction
(cont.)
The PSD3XX I/O ports can be used for:
•
Standard I/O ports
•
Programmable chip select outputs
•
Address inputs
•
Demultiplexed address outputs
•
A data bus port for non-multiplexed MCU applications
•
A data bus “repeater” port that shares and arbitrates the local MCU data bus with
external devices.
Implementing your design has never been easier than with PSDsoft —ST’s software
development suite. Using PSDsoft, you can do the following:
•
Configure your PSD3XX to work with virtually any microcontroller
•
Specify what you want implemented in the programmable logic using a high-level
Hardware Description Language (HDL)
•
Simulate your design
•
Download your design to the part using a programmer.
2.
Notation
For a complete product comparison, refer to Table 1.
PSD3XX
references the standard version of the PSD3XX family, which are ideal for
general-purpose embedded control applications.
PSD3XXR
SRAM-less version of the PSD3XX. If you don’t require the 16 Kb SRAM or
need a larger external SRAM, go with this part to save cost.
ZPSD3XX
has improved technology that helps reduce current consumption using the Turbo
bit. Excellent if you require a 5 V version of the PSD3XX that uses less power.
ZPSD3XXR
SRAM-less version of the ZPSD3XX.
ZPSD3XXV
2.7 V to 5.5 V operation, ideal for very low-power and low-voltage
applications.
ZPSD3XXRV
SRAM-less version of the ZPSD3XXV.
Throughout this data sheet, references are made to the PSD3XX. In most cases, these
references also cover the entire family. Exceptions will be noted. References, such as
“3X1 only” cover all parts that have a 301 or 311 in the part number. Use the following table
to determine what references cover which product versions:
The possible causes of RF interference are increasing, some are obvious and easy to track, while others are very subtle and difficult to identify. Although careful design of base stations can provide ...
I modified this based on the example of academic Ethernet learning by netizens. When I connect to the host as a client, there is no response. Can you tell me where the problem lies? #include
#include ...
Project Overview
The micro urine analyzer we designed can detect ten parameters of urine, including white blood cells, nitrite, urobilinogen, protein, pH value, occult blood, specific g...[Details]
A ventilator is an instrument that can replace or assist a person's respiratory function. It is suitable for artificial respiration of patients with respiratory failure or even respiratory arrest. I...[Details]
introduction
At the beginning of this century, Veit used Einthoven's galvanometer to record the electrical activity of the human pregnant uterus from the body surface for the first time. In 19...[Details]
Until now, designers have faced a trade-off in ADC selection. Pipeline converters offer high resolution and wide dynamic range, but their power consumption is quite high. The alternative, discrete ...[Details]
How can we get the highest performance from an A/D converter? The obvious answer is to use good design and board layout, but there are other techniques that can be used to improve performance. We can ...[Details]
No other sector is feeling the pressure for change more acutely than the healthcare industry. Healthcare organizations and services are desperate to reduce costs, but the challenge is to do so without...[Details]
Implantable Cardivoerter Defibrillators (ICDs) have been in common use for several years. ICDs apply a high voltage pulse between two electrodes connected to the heart, which detects cardiac fibrillat...[Details]
With the rapid development of digital technology, various digital display screens have emerged, including LED, LCD, DLP, etc. There are various control systems for various digital large screens, in...[Details]
In response to a series of problems caused by the backwardness of traditional water meters, the Ministry of Construction of China has proposed the requirement of "three meters per household" for ur...[Details]
Lithium-ion battery is a widely used rechargeable battery. It has the advantages of high single-cell operating voltage, small size, light weight, high energy density, long cycle life, rapid full ch...[Details]
With the rapid development of computer technology, embedded image systems are widely used in office equipment, manufacturing and process design, medical, monitoring, sanitary equipment, transportat...[Details]
Engineers who are new to wireless design and wireless product development need to master the basics of
RF measurement
. In many cases, this process is to enable engineers who have been engag...[Details]
Over the past 15 to 20 years, automotive power MOSFETs have evolved from an initial technical topic to a thriving commercial sector. Power MOSFETs were chosen because they can withstand transient ...[Details]
E6601A is Agilent's new generation of comprehensive tester platform, designed to provide low-cost calibration solutions for mobile phone manufacturers. It uses an open Windows® XP platform, allowi...[Details]
Preface
Phase-modulated pulse signals can achieve a large compression ratio. As a commonly used pulse compression signal, they are widely used in modern radar and communication systems. Wi...[Details]
Power technology
京公网安备 11010802033920号
EEWORLD
