BU99901GUZ-WE2 datasheet(3/26 Pages) ROHM

No de pièce	BU99901GUZ-WE2

Description	Serial EEPROM Series Standard EEPROM WLCSP EEPROM

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Fabricant	ROHM [Rohm]

Site Internet	http://www.rohm.com

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Datasheet

3/23

TSZ02201-0R2R0G100280-1-2

4.SEP.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BU99901GUZ-W (32Kbit)

SDA

SCL

D0

ACK

STOP

CONDITION

START

CONDITION

tWR

WRITE DATA(n)

●Sync Data Input / Output Timing

○Input read at the rise edge of SCL

○Data output in sync with the fall of SCL

Figure 1-(a). Sync data input / output timing

Figure 1-(d). WP timing at write execution

Figure 1-(b). Start - stop bit timing

○At write execution, in the area from the D0 taken clock rise of the first

DATA(1), to tWR, set WP=“LOW”.

○By setting WP “HIGH” in the area, write can be cancelled.

When it is set WP=“HIGH” during tWR, write is forcibly ended, and data of

address under access is not guaranteed, therefore write it once again.

Figure 1-(e). WP timing at write cancels

Figure 1-(c). Write cycle timing

SDA

tHD :STA

tHD :DAT

tSU :DAT

tBUF

tPD

tDH

tLOW

tHIGH

tR

tF

SCL

(Input)

(Output)

SCL

SDA

WP

ｔHD：WP

tWR

D1

D0

ACK

DATA(1)

DATA(n)

tSU

：WP

Stop condition

SDA

tSU:STA

tSU:STO

tHD:STA

START BIT

STOP BIT

SCL

tHIGH:WP

WP

SDA

D1

D0

ACK

DATA(1)

DATA(n)

tWR

SCL

tWR

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