M24M02-R datasheet(36/40 Pages) STMICROELECTRONICS

36 / 40 page

Contents

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

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

2.1

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

2.2

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

2.3

Chip enable (E2) ............................................................... 4

2.4

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

2.5

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

2.6

Supply voltage (VCC) ........................................................... 5

2.6.1

Operating supply voltage (VCC).............................................. 5

2.6.2

Power-up conditions ...................................................... 5

2.6.3

Device reset ............................................................ 5

2.6.4

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

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

Device operation ..................................................................7

4.1

Start condition ................................................................. 8

4.2

Stop condition ................................................................. 8

4.3

Data input..................................................................... 8

4.4

Acknowledge bit (ACK).......................................................... 8

4.5

Device addressing.............................................................. 9

Instructions ......................................................................10

5.1

Write operations .............................................................. 10

5.1.1

Byte write ............................................................. 11

5.1.2

Page write............................................................. 12

5.1.3

Write identification page (M24M02-DR only) ................................... 13

5.1.4

Lock identification page (M24M02-DR only) ................................... 13

5.1.5

ECC (error correction code) and write cycling .................................. 13

5.1.6

Minimizing write delays by polling on ACK .................................... 14

5.2

Read operations .............................................................. 15

5.2.1

Random address read.................................................... 16

5.2.2

Current address read .................................................... 16

5.2.3

Sequential read......................................................... 16

5.2.4

Read identification page (M24M02-DR only)................................... 16

5.2.5

Read the lock status (M24M02-DR only)...................................... 17

Initial delivery state ...............................................................18

M24M02-DR M24M02-R

Contents

DS7025 - Rev 11

page 36/40

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