FM24C256

Rev 3.1

May 2005

Page 10 of 12

Diagram Notes

All start and stop timing parameters apply to both read and write cycles. Clock specifications are identical for read

and write cycles. Write timing parameters apply to slave address, word address, and write data bits. Functional

relationships are illustrated in the relevant data sheet sections. These diagrams illustrate the timing parameters only.

Read Bus Timing

t

SU:SDA

Start

t

R

`

t

F

Stop Start

t

BUF

t

HIGH

1/fSCL

t

LOW

t

SP

t

SP

Acknowledge

t

HD:DAT

t

SU:DAT

t

AA

t

DH

SCL

SDA

Write Bus Timing

t

SU:STO

Start

Stop Start

Acknowledge

t

AA

t

HD:DAT

t

HD:STA

t

SU:DAT

SCL

SDA

Parameter

Min

Units

Notes

Data Retention

45

Years