Interfacing with a nonmultiplexed, asynchronous 16-bit NOR Flash memory

AN2784

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Doc ID 14779 Rev 4

Figure 5.

16-bit NOR Flash: M29W128FL/GL connection to STM32F10xxx

Note:

The GPIO PD6 pin is used to provide a Ready/Busy output signal for NOR Flash memories

(in this case the application needs to poll on the state of this pin to guarantee correct

operation).

In the example shown below, this pin is not used with the M29W128FL and M29W128GL

NOR Flash memories. It is however required for the S29GL128P NOR Flash memory.

A firmware example is available within the STM32F10xxx firmware library provided in the

NOR directory at the path:

STM32F10x_StdPeriph_Lib\Project\STM32F10x_StdPeriph_Examples\FSMC.

The main goal of this example is to provide the basics of how to use the FSMC firmware

library and the associated NOR Flash memory driver to perform erase/read/write operations

on the M29W128FL, M29W128GL or S29GL128P NOR Flash memories mounted on the

STM3210E-EVAL board.

For the FSMC timings, the FSMC NOR Flash firmware driver uses the highest timing values,

that is those of the S29GL128P NOR Flash memory. In this way, the firmware driver is able

to support all the NOR Flash memories available on the STM3210E-EVAL.

+3.3 V

A1

A2

A3

A4

A5

A6

A7

A8

A9

A10

A11

A12

A13

A14

A15

A16

A17

A18

A19

A20

A21

A22

+3.3 V

FSMC_NE2

FSMC_NWE

FSMC_NOE

GPIO PD6

R3

10 k

Ω

C3

100 nF

+3.3 V

R1

10 k

Ω

+3.3 V

C2

100 nF

R4

10 k

Ω

C1

100 nF

R5

10 k

Ω

+3.3 V

JP1

A0

+3.3 V

D0

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

D14

D15

R2

10 k

Ω

Default setting: Open

A22

B8

A15

D7

A14

C7

A13

A7

A12

B7

A11

D6

A10

C6

A9

A6

A8

B6

A19

D5

A20

D4

W

A5

RP

B5

A21

C5

Vpp/WP

B4

RB

A4

A18

C4

A17

B3

A7

A3

A6

C3

A5

D3

A4

B2

A3

A2

A2

C2

A1

D2

VCC

D8

A0

E2

E

F2

VSS

E8

G

G2

DQ0

E3

DQ8

F3

DQ1

H3

DQ9

G3

DQ2

E4

DQ10

F4

DQ3

H4

DQ11

G4

VCC

F1

DQ4

H5

DQ12

F5

DQ5

E5

DQ13

G6

DQ6

H6

DQ14

F6

DQ7

E6

DQ15A-1

G7

VSS

H7

BYTE

F7

A16

E7

VCC

G5

VSS

H2

U1

M29W128FL70ZA6E

C4

100 nF

M29W128GL70ZA6E

PD5

PG9

PD6

PD4

PF0

PF12

PF1

PF2

PF3

PF4

PF5

PF13

PF14

PF15

PG0

PG1

PG2

PG3

PG4

PG5

PD11

PD12

PD13

PE3

PE4

PE5

PE6

PD14

PD15

PD0

PD1

PE7

PE8

PE9

PE10

PE11

PE12

PE13

PE14

PE15

PD8

PD9

PD10

ai15180

S29GL128P90FFIR2