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:
[b][size=3]The WEBENCH design environment provides you with the comprehensive design and prototyping tools you need to create a power supply or DC/DC converter that can effectively meet your design re...
[font="][size=10.5pt] [/size][/font][font=宋体][size=10.5pt]Smartphones have become standard with full touch screens, but this is my first time to experience a full touch screen oscilloscope. A few days...
Intermodulation distortion (IMD) is a common measure of linearity in amplifiers, gain blocks, mixers, and other RF components. Second- and third-order intercept points (IP2 and IP3) are the figures of...
Nexperia sincerely invites you to participate in the Nexperia ESD Electronic Design Engineer Technical Seminar, which will be held online on September 22!Seminar time:
2020-9-22 2:00-3:30 PMThis semin...
Earlier, we were very happy and excited to discuss with all of you about whether this non-mainstream uS has a future. Despite this, non-mainstream Xin Xin decided to continue, no matter what disgustin...
The intelligent driving community has its own rhythm. Some are busy pushing new versions and focusing on R&D, others are busy with publicity and promotion, and still others are immersed in mass pro...[Details]
New energy vehicles are increasingly popular with consumers due to policies and energy conservation. Once you've purchased your vehicle, maintenance is essential. However, due to the different powe...[Details]
Is pure electric vehicles a false proposition for long-distance driving? At least from my personal perspective, based on current technological and infrastructure standards, I believe so. Below, I'l...[Details]
Topics: Bring Your Own Device (BYOD) trends; the impact of using employees' own mobile devices to control access to work facilities and equipment on information security; and ways to securely imple...[Details]
White light LEDs are voltage-sensitive devices. In actual operation, their upper limit is 20mA. However, the current often increases due to various reasons during use. If no protective measures are...[Details]
The Automotive Testing and Quality Assurance Expo (ATE 2025) will open on August 27th. At the expo, Rohde & Schwarz (R&S) will showcase six automotive testing solutions, themed "Intelligently Drivi...[Details]
Since the beginning of this year, price wars have intensified, new models have been launched one after another, used cars with zero kilometers have become a hot topic, and the industry's internal c...[Details]
The digital TV set-top box consists of a tuner, QAM demodulator, TS demultiplexer, MPEG-2 decoder, PAUNTSC video encoder, embedded CPU system and peripheral interfaces, CA module, and uplink data m...[Details]
While the current industry consensus is that autonomous vehicles are robots and that their systems are managed using robotics-developed thinking, there are also cases where autonomous driving is ac...[Details]
With the increasing number of new energy vehicles on the road, the deployment of supporting facilities for these vehicles has accelerated, and new energy vehicles have gradually entered the vision ...[Details]
Electric vehicles will revolutionize transportation, changing fuel consumption, carbon emissions, costs, maintenance, and driving habits. Currently, a major selling point for electric vehicles is t...[Details]
introduction
With the development of society, people's requirements for the quality of refrigerated and frozen foods are constantly improving. The changes in food appearance and nutritional co...[Details]
Driven by business opportunities such as access to new markets and government initiatives like the Belt and Road Initiative, global expansion has become a significant trend for Chinese companies. C...[Details]
As my country's industrialization continues to improve, environmental pollution is also facing tremendous pressure. In recent years, national environmental protection policies have become increasin...[Details]
Amid the increasing complexity of electronic system power management,
power architecture design
is undergoing a paradigm shift from experience-driven to tool-enabled.
Analog
Devices...[Details]
Analogue and Mixed Signal
京公网安备 11010802033920号
EEWORLD
