ZPSD302B-90JI View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ZPSD302B-90JI

Low cost field programmable microcontroller peripherals

STMicroelectronics 

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

t(s 10.2.1 Port A (PA0-PA7) in Multiplexed Address/Data Mode................................................................16

c 10.2.2 Port A (PA0-PA7) in Non-Multiplexed Address/Data Mode ........................................................17

u 10.3 Port B (PB0-PB7).....................................................................................................................................18

d 10.3.1 Port B (PA0-PA7) in Multiplexed Address/Data Mode................................................................18

ro 10.3.2 Port B (PA0-PA7) in Non-Multiplexed Address/Data Mode ........................................................19

P 10.4 Port C (PC0-PC2) ....................................................................................................................................20

te 10.5 ALE/AS Input Pin .....................................................................................................................................20

le 11 PSD Memory ......................................................................................................................................................21

o 11.1 EPROM....................................................................................................................................................21

bs 11.2 SRAM (Optional)......................................................................................................................................21

11.3 Page Register (Optional) .........................................................................................................................21

- O 11.4 Programming and Erasure.......................................................................................................................21

) 12 Control Signals ...................................................................................................................................................22

t(s 12.1 ALE or AS ................................................................................................................................................22

c 12.2 WR or R/W...............................................................................................................................................22

u 12.3 RD/E/DS (DS option not available on 3X1 devices) ................................................................................22

d 12.4 PSEN or PSEN ........................................................................................................................................22

ro 12.5 A19/CSI ...................................................................................................................................................23

P 12.6 Reset Input ..............................................................................................................................................24

te 13 Program/Data Space and the 8031 ....................................................................................................................26

le 14 Systems Applications..........................................................................................................................................27

o 15 Security Mode.....................................................................................................................................................30

s 16 Power Management............................................................................................................................................30

Ob16.1 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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