M95256-R datasheet(50/51 Pages) STMICROELECTRONICS

50 / 51 page

List of figures

Figure 1.

Logic diagram..................................................................... 2

Figure 2.

8-pin package connections (top view) .................................................... 3

Figure 3.

WLCSP connections ................................................................ 3

Figure 4.

Block diagram .................................................................... 4

Figure 5.

Bus master and memory devices on the SPI bus............................................. 6

Figure 6.

SPI modes supported ............................................................... 7

Figure 7.

Hold condition activation ............................................................. 9

Figure 8.

Write enable (WREN) sequence ....................................................... 12

Figure 9.

Write disable (WRDI) sequence ....................................................... 13

Figure 10.

Read Status register (RDSR) sequence .................................................. 14

Figure 11.

Write Status register (WRSR) sequence ................................................. 16

Figure 12.

Read from Memory array (READ) sequence .............................................. 18

Figure 13.

Byte Write (WRITE) sequence ........................................................ 19

Figure 14.

Page Write (WRITE) sequence ....................................................... 20

Figure 15.

Read Identification page sequence ..................................................... 22

Figure 16.

Write Identification page sequence ..................................................... 23

Figure 17.

Read Lock status sequence .......................................................... 24

Figure 18.

Lock ID sequence ................................................................. 25

Figure 19.

AC measurement I/O waveform ....................................................... 28

Figure 20.

Serial input timing ................................................................. 33

Figure 21.

Hold timing...................................................................... 33

Figure 22.

Serial output timing ................................................................ 33

Figure 23.

SO8N – Outline .................................................................. 34

Figure 24.

SO8N - Recommended footprint ....................................................... 35

Figure 25.

TSSOP8 – Outline ................................................................ 36

Figure 26.

TSSOP8 – Recommended footprint..................................................... 37

Figure 27.

UFDFPN8 - Outline ................................................................ 38

Figure 28.

UFDFPN8 - Recommended footprint .................................................... 39

Figure 29.

WLCSP8 - Outline................................................................. 40

Figure 30.

WLCSP8 - Recommended footprint..................................................... 41

M95256-W M95256-R M95256-DF

List of figures

DS4712 - Rev 22

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