PSD4235G2V datasheet(3/124 Pages) STMICROELECTRONICS

Part #	PSD4235G2V

Description	Flash in-system programmable (ISP) peripherals for 16-bit MCUs (3.3 V supply)

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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PSD4235G2V

Contents

3/124

5.7

Enable-Out registers - Ports A, B, C, F . . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.8

Input macrocells registers- ports A, B, C . . . . . . . . . . . . . . . . . . . . . . . . . 25

5.9

Output macrocells A/B registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.10

Mask macrocells A/B registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.11

Flash Memory Protection register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

5.12

Flash Boot Protection register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.13

JTAG Enable register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.14

Page register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.15

PMMR0 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.16

PMMR2 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

5.17

VM register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

5.18

Memory_ID0 registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

5.19

Memory_ID1 register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

6

Detailed operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.1

Memory blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

6.2

Primary Flash memory and secondary Flash memory description . . . . . 32

6.2.1

Memory block Select signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.2.2

Ready/Busy (PE4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6.3

Memory operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7

Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.1

Power-up condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

7.2

Reading Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

7.3

Read memory contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

7.4

Read Primary Flash identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

7.5

Read Memory Sector Protection status . . . . . . . . . . . . . . . . . . . . . . . . . . 36

7.6

Reading the Erase/Program status bits . . . . . . . . . . . . . . . . . . . . . . . . . . 36

7.7

Data Polling (DQ7) - DQ15 for Motorola . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7.8

Toggle flag (DQ6) - DQ14 for Motorola . . . . . . . . . . . . . . . . . . . . . . . . . . 37

7.9

Error flag (DQ5) - DQ13 for Motorola . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

7.10

Erase timeout flag (DQ3) - DQ11 for Motorola . . . . . . . . . . . . . . . . . . . . . 38

8

Programming Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

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