X40430, X40431, X40434, X40435

FN8251 Rev 1.00

Page 21 of 26

May 24, 2006

TIMING DIAGRAMS

Bus Timing

WP Pin Timing

Write Cycle Timing

Nonvolatile Write Cycle Timing

Note:

(1) tWC is the time from a valid stop condition at the end of a write sequence to the end of the self-timed internal nonvolatile write cycle. It is

the minimum cycle time to be allowed for any nonvolatile write by the user, unless Acknowledge Polling is used.

tSU:STO

tHIGH

tSU:STA

tHD:STA

tHD:DAT

tSU:DAT

SCL

SDA IN

SDA OUT

tF

tLOW

tBUF

tR

tDH

tAA

tHD:WP

SCL

SDA IN

WP

tSU:WP

Clk 1

Clk 9

Slave Address Byte

START

SCL

SDA

tWC

8th Bit of Last Byte

ACK

Stop

Condition

Start

Condition

Symbol

Parameter

Min

Typ

Max

Unit

tWC(1)

Write Cycle Time

5

10

ms