M24256E-FDW6TP datasheet(42/46 Pages) STMICROELECTRONICS

42 / 46 page

Contents

Description ........................................................................2

1.1

Device block diagram ........................................................... 2

1.2

Device packaging .............................................................. 3

Signal description .................................................................4

2.1

Serial clock (SCL) .............................................................. 4

2.2

Serial data (SDA) .............................................................. 4

2.3

Write control (WC).............................................................. 4

2.4

VSS (ground) .................................................................. 4

2.5

Supply voltage (VCC) ........................................................... 4

2.5.1

Operating supply voltage (VCC).............................................. 4

2.5.2

Power-up conditions ...................................................... 4

2.5.3

Device reset ............................................................ 4

2.5.4

Power-down conditions .................................................... 5

Block diagram .....................................................................6

Features...........................................................................7

4.1

Identification page .............................................................. 7

4.2

Configurable device address register (CDA) ........................................ 7

Device operation ..................................................................9

5.1

Start condition ................................................................. 9

5.2

Stop condition ................................................................. 9

5.3

Data input.................................................................... 10

5.4

Acknowledge bit (ACK)......................................................... 10

5.5

Device addressing............................................................. 10

Instructions ......................................................................12

6.1

Write operations on memory array ............................................... 12

6.1.1

Byte write ............................................................. 13

6.1.2

Page write............................................................. 14

6.1.3

ECC (error correction code) and write cycling .................................. 15

6.1.4

Minimizing write delays by polling on ACK .................................... 16

6.2

Write identification page ........................................................ 17

6.2.1

Lock identification page................................................... 17

6.3

Write operations on configurable device address register ............................ 18

6.4

Read operations on memory array ............................................... 19

6.4.1

Random address read.................................................... 20

M24256E-F

Contents

DS12687 - Rev 3

page 42/46

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