PSD4235G2 datasheet(2/93 Pages) STMICROELECTRONICS

2 / 93 page

PSD4000 Series

PSD4135G2

Flash In-System-Programmable Peripherals for 16-Bit MCUs

Table of Contents

Introduction ........................................................................................................................................................................................1

In-System Programming (ISP) JTAG .......................................................................................................................................2

In-Application re-Programming (IAP) .......................................................................................................................................2

Key Features......................................................................................................................................................................................3

PSD4000 Family ................................................................................................................................................................................3

Block Diagram....................................................................................................................................................................................4

Architectural Overview .......................................................................................................................................................................5

Memory ....................................................................................................................................................................................5

PLDs.........................................................................................................................................................................................5

I/O Ports ...................................................................................................................................................................................5

Microcontroller Bus Interface....................................................................................................................................................5

ISP via JTAG Port ....................................................................................................................................................................6

In-System Programming (ISP) .................................................................................................................................................6

In-Application re-Programming (IAP) .......................................................................................................................................6

Page Register...........................................................................................................................................................................6

Power Management Unit ..........................................................................................................................................................6

Development System .........................................................................................................................................................................7

Pin Descriptions .................................................................................................................................................................................8

Register Description and Address Offset .........................................................................................................................................11

Register Bit Definition ......................................................................................................................................................................12

Functional Blocks .............................................................................................................................................................................15

Memory Blocks .......................................................................................................................................................................15

Main Flash and Secondary Flash Memory Description ...................................................................................................15

SRAM...............................................................................................................................................................................26

Memory Select Signals ....................................................................................................................................................26

Page Register ..................................................................................................................................................................29

Memory ID Registers .......................................................................................................................................................30

PLDs.......................................................................................................................................................................................31

Decode PLD (DPLD)........................................................................................................................................................33

General Purpose PLD (GPLD).........................................................................................................................................33

Microcontroller Bus Interface..................................................................................................................................................36

Interface to a Multiplexed Bus..........................................................................................................................................36

Interface to a Non-multiplexed Bus ..................................................................................................................................36

Data Byte Enable Reference ...........................................................................................................................................38

Microcontroller Interface Examples..................................................................................................................................39

I/O Ports .................................................................................................................................................................................44

General Port Architecture ................................................................................................................................................44

Port Operating Modes ......................................................................................................................................................44

Port Configuration Registers (PCRs) ...............................................................................................................................48

Port Data Registers..........................................................................................................................................................49

Ports A, B and C – Functionality and Structure ...............................................................................................................50

Port D – Functionality and Structure ................................................................................................................................51

Port E – Functionality and Structure ................................................................................................................................51

Port F – Functionality and Structure ................................................................................................................................52

Port G – Functionality and Structure ................................................................................................................................52

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