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ZPSD301R-B-15J Datasheet(PDF) 2 Page - STMicroelectronics |
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ZPSD301R-B-15J Datasheet(HTML) 2 Page - STMicroelectronics |
2 / 85 page i PSD3XX Family PSD3XX ZPSD3XX ZPSD3XXV PSD3XXR ZPSD3XXR ZPSD3XXRV Low Cost Microcontroller Peripherals Table of Contents 1 Introduction ...........................................................................................................................................................1 2 Notation ................................................................................................................................................................2 3 Key Features ........................................................................................................................................................4 4 PSD3XX Family Feature Summary ......................................................................................................................5 5 Partial Listing of Microcontrollers Supported ........................................................................................................6 6 Applications ..........................................................................................................................................................6 7 ZPSD Background ................................................................................................................................................6 7.1 Integrated Power ManagementTM Operation .............................................................................................7 8 Operating Modes (MCU Configurations) ............................................................................................................10 9 Programmable Address Decoder (PAD).............................................................................................................12 10 I/O Port Functions ...............................................................................................................................................15 10.1 CSIOPORT Registers..............................................................................................................................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 10.5 ALE/AS Input Pin .....................................................................................................................................20 11 PSD Memory ......................................................................................................................................................21 11.1 EPROM....................................................................................................................................................21 11.2 SRAM (Optional)......................................................................................................................................21 11.3 Page Register (Optional) .........................................................................................................................21 11.4 Programming and Erasure.......................................................................................................................21 12 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 12.5 A19/CSI ...................................................................................................................................................23 12.6 Reset Input ..............................................................................................................................................24 13 Program/Data Space and the 8031 ....................................................................................................................26 14 Systems Applications..........................................................................................................................................27 15 Security Mode .....................................................................................................................................................30 16 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 17 Calculating Power ...............................................................................................................................................34 |
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