M24512-R datasheet(43/47 Pages) STMICROELECTRONICS

43 / 47 page

Contents

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

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

2.1

Serial Clock (SCL).............................................................. 4

2.2

Serial Data (SDA) .............................................................. 4

2.3

Chip Enable (E2, E1, E0) ........................................................ 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

Memory organization ..............................................................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 (M24128-D only) .................................... 13

5.1.4

Lock Identification Page (M24128-D 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

M24512-W M24512-R M24512-DF

Contents

DS6520 - Rev 31

page 43/47

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