Details, datasheet, quote on part number: ZSD302R
PartZSD302R
CategoryMicrocontrollers
DescriptionLow Cost Field Programmable Microcontroller Peripherals
CompanyST Microelectronics, Inc.
DatasheetDownload ZSD302R datasheet
  

 

Features, Applications

to 1 Mbit of EPROM to 16 Kbit SRAM Input Latches Programmable I/O ports Page Logic Programmable Security

Introduction...........................................................................................................................................................1 Notation................................................................................................................................................................2 Key Features........................................................................................................................................................4 PSD3XX Family Feature Summary......................................................................................................................5 Partial Listing of Microcontrollers Supported........................................................................................................6 Applications..........................................................................................................................................................6 ZPSD Background................................................................................................................................................6 7.1 Integrated Power ManagementTM Operation.............................................................................................7 Operating Modes (MCU Configurations)............................................................................................................10 Programmable Address Decoder (PAD).............................................................................................................12 I/O Port Functions...............................................................................................................................................15 10.1 CSIOPORT Registers..............................................................................................................................15 10.2 Port (PA0-PA7).....................................................................................................................................16 10.2.1 Port (PA0-PA7) in Multiplexed Address/Data Mode................................................................16 10.2.2 Port (PA0-PA7) in Non-Multiplexed Address/Data Mode........................................................17 10.3 Port (PB0-PB7).....................................................................................................................................18 10.3.1 Port (PA0-PA7) in Multiplexed Address/Data Mode................................................................18 10.3.2 Port (PA0-PA7) in Non-Multiplexed Address/Data Mode........................................................19 10.4 Port (PC0-PC2)....................................................................................................................................20 10.5 ALE/AS Input Pin.....................................................................................................................................20 PSD EPROM....................................................................................................................................................21 11.2 SRAM (Optional)......................................................................................................................................21 11.3 Page Register (Optional).........................................................................................................................21 11.4 Programming and Erasure.......................................................................................................................21 Control Signals...................................................................................................................................................22 12.1 ALE R/W...............................................................................................................................................22 12.3 RD/E/DS (DS option not available devices)................................................................................22 12.4 PSEN A19/CSI...................................................................................................................................................23 12.6 Reset Input..............................................................................................................................................24 Program/Data Space and the 8031....................................................................................................................26 Systems Applications..........................................................................................................................................27 Security Mode.....................................................................................................................................................30 Power Management............................................................................................................................................30 16.1 CSI Input..................................................................................................................................................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

ZPSD3XXR ZPSD3XXRV Low Cost Microcontroller Peripherals Table of Contents (cont.)

Specifications......................................................................................................................................................37 18.1 Absolute Maximum Ratings.....................................................................................................................37 18.2 Operating Range.....................................................................................................................................37 18.3 Recommended Operating Conditions......................................................................................................37 18.4 Pin Capacitance.......................................................................................................................................37 18.5 AC/DC Characteristics PSD3XX/ZPSD3XX (All devices)..............................................................38 18.6 AC/DC Characteristics (3 V devices only)...........................................................................39 18.7 Timing Parameters PSD3XX/ZPSD3XX (All devices)....................................................................40 18.8 Timing Parameters (3 V devices only)..............................................................................42 18.9 Timing Diagrams for AC Testing...............................................................................................................................................65 Pin Assignments.................................................................................................................................................66 Package Information...........................................................................................................................................67 Package Drawings..............................................................................................................................................68 PSD3XX Product Ordering 22.1 PSD3XX Selector Guide..........................................................................................................................72 22.2 Part Number Construction.......................................................................................................................73 22.3 Ordering Information................................................................................................................................73 Data Sheet Revision History...............................................................................................................................80


 

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