ROHM BU99901GUZ-W Technical data

A

High Reliability Serial EEPROMs

WL-CSP EEPROM family I2C BUS

BU99901GUZ-W

●Description

BU99901GUZ-W series is a serial EEPROM of I

●Features

1) Completely conforming to the world standard I All controls available by 2 ports of serial clock (SCL) and serial data (SDA)

2) Other devices than EEPROM can be connected to the same port, saving microcontroller port.

3) 1.7～3.6V single power source action most suitable for battery use.

4) FAST MODE 400kHz at 1.7～3.6V

5) Page write mode useful for initial value write at factory shipment.

6) Auto erase and auto end function at data rewrite.

7) Low current consumption At write operation (3.3V) : 0.6mA (Typ.) At read operation (3.6V) : 0.6mA (Typ.) At standby operation (3.6V) : 0.1µA (Typ.)

8) Write mistake prevention function Write (write protect) function added Write mistake prevention function at low voltage

9) Compact package

10) Data rewrite up to 100,000 times

11) Data kept for 40 years

12) Noise filter built in SCL / SDA terminal

13) Shipment data all address FFh

●Page write

Product number BU99901GUZ-W

Number of pages 32Byte

●Absolute maximum ratings (Ta=25℃)

Parameter symbol Ratings Unit

Impressed voltage VCC -0.3～+6.5 V

Permissible dissipation Pd 220 *1 mW Storage temperature range Tstg -65～+125 ℃ Action temperature range Topr -40～+85 ℃ Terminal voltage － -0.3～Vcc+1.0 *2 V

*1 When using at Ta=25℃ or higher, 2.2mW to be reduced per 1℃ *2 The Max value of Terminal Voltage is not over 6.5V.

●Memory cell characteristics (Ta=25℃, Vcc=1.7～3.6V)

Parameter

Number of data rewrite times *1 1,000,000 －－ Times

Data hold years *1 40 －－ Years

*1 Not 100% TESTED

●Recommended operating conditions

Parameter Symbol Ratings Unit

Power source voltage

Input voltage VIN 0～Vcc V

Write Read 1.7～3.6

Min. Typ. Max.

Vcc

2

C BUS interface method.

2

C BUS.

Limits

2.7～3.3

Unit

V

No.10001EAT15

www.rohm.com

1/16

2010.09 - Rev.

BU99901GUZ-W

A

Technical Note

●Electrical characteristics (Unless otherwise specified Ta=-40～85℃､VCC=1.7～3.6V)

Parameter Symbol

"H" Input Voltage1 V

"L" Input Voltage1 V

"H" Input Voltage2 V

"L" Input Voltage2 V

"H" Input Voltage3 V

"L" Input Voltage3 V

"L" Output Voltage1 V

"L" Output Voltage2 V

Min Typ. Max.

0.7Vcc － Vcc+1.0 V 2.5V≦Vcc≦3.6V

IH1

-0.3 － 0.3Vcc V 2.5V≦Vcc≦3.6V

IL1

0.8Vcc Vcc+1.0 V 1.8V≦Vcc＜2.5V

IH2

-0.3 0.2Vcc V 1.8V≦Vcc＜2.5V

IL2

0.9Vcc Vcc+1.0 V 1.7V≦Vcc＜1.8V

IH3

-0.3 0.1Vcc V 1.7V≦Vcc＜1.8V

IL3

－－ 0.4 V IOL=3.0mA , 2.5V≦Vcc≦3.6V (SDA)

OL1

－－ 0.2 V IOL=0.7mA , 1.7V≦Vcc＜2.5V (SDA)

OL2

Limits

Unit Condition

Input Leakage Current ILI -1 － 1 µA VIN=0～Vcc (WP, TEST)

Pull Up Resistance I

Output Leakage Current ILO -1 － 1 µA V

Current consumption at action

6 － 14 kΩ (SCL,SDA)

LI2

OUT

I

CC1

I

－－ 1.7

CC2

－－ 4.1

Vcc=3.3V , f

Byte Write, Page Write

mA

Vcc=3.6V , f

Random read, Current read, Sequential read

=0～Vcc (SDA)

=400kHz, tWR=5ms

SCL

=400kHz

SCL

Standby Current ISB －－ 2.0 µA Vcc=3.6V, SDA ,SCL=Vcc, WP=GND

○Radiation resistance design is not made.

●Action timing characteristics(Unless otherwise specified Ta=-40～85℃､V

FAST-MODE

Parameter Symbol

2.5V≦Vcc≦3.6V

=1.7～3.6V)

CC

STANDARD-MODE

1.7V≦Vcc≦3.6V

Unit

Min. Typ. Max. Min. Typ. Max.

SCL Frequency fSCL －－ 400 －－ 100 kHz Data clock "High" time tHIGH 0.6 －－ 4.0 －－ µs Data clock "Low" time tLOW 1.2 －－ 4.7 －－ µs

SDA, SCL rise time *1 tR －－ 0.3 －－ 1.0 µs

SDA, SCL fall time *1 tF －－ 0.3 －－ 0.3 µs Start condition hold time tHD:STA 0.6 －－ 4.0 －－ µs Start condition setup time tSU:STA 0.6 －－ 4.7 －－ µs Input data hold time tHD:DAT 0 －－ 0 －－ ns Input data setup time tSU:DAT 100 －－ 250 －－ ns Output data delay time tPD 0.1 － 0.9 0.2 － 3.5 µs Output data hold time tDH 0.1 －－ 0.2 －－ µs Stop condition data setup time tSU:STO 0.6 －－ 4.7 －－ µs Bus release time before transfer start tBUF 1.2 －－ 4.7 －－ µs Internal write cycle time tWR －－ 5 －－ 5 ms

Noise removal valid period (SDA,SCL terminal)

tI －－ 0.1 －－ 0.1 µs

WP hold time tHD:WP 0 －－ 0 －－ ns WP setup time tSU:WP 0.1 －－ 0.1 －－ µs WP valid time tHIGH:WP 1.0 －－ 1.0 －－ µs

*1 Not 100% TESTED

●FAST-MODE and STANDARD-MODE

FAST-MODE and STANDARD-MODE are of same actions, and mode is changed. They are distinguished by action speeds. 100kHz action is called STANDARD-MODE, and 400kHz action is called FAST-MODE. This action frequency is the maximum action frequency, so 100kHz clock may be used in FAST-MODE. When power source voltage goes down, action at high speed is not carried out, therefore, at Vcc=2.5V～5.5V , 400kHz, namely, action is made in FASTMODE. (Action is made also in STANDARD-MODE) Vcc=1.8V~2.5V is only action in 100kHz STANDARD-MODE.

www.rohm.com

2/16

2010.09 - Rev.

BU99901GUZ-W

A

t

A

f

A

g

A

●Sync data input/output timing

SCL

(Input)

tHD :STA tHD :DAT

SDA

tBUF

SDA

(Output)

○Input read at the rise edge of SCL ○Data output in sync with the fall of SCL

tSU :DAT

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

SCL

tSU:STA tSU:STOtHD:STA

SDA

SCL

START BIT

Fig.1-(b) Start - stop bit

SDA

WRITE DATA( n)

D0 ACK

STOP

CONDITION

Fig.1-(c) Write cycle timing

●Block diagram

TEST

GND

tHIGH

tR tF

tLOW

tPD tDH

WR

START

CONDITIO N

STOP BIT

32Kbi t EEPROM ar ray

12bit

dddress

decoder

12bit

START STOP

Control circuit

High voltage generating circuit

TEST terminal,please connect GND

Fig.2 Block diagram

Technical Note

SCL

DATA(1)

D1 D0ACK

SDA

WP

tSU：WP

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

SCL

DATA(1)

D1 D0 ACK ACK

SDA

WP

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

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

Slave - word address regi ster

Power source

e detection

vol ta

CK

DATA(n)

tHIGH:WP

8bit

Da ta register

CK

Stop condition

Vcc

WP

SCL

SDA

t

WR

tWR

ｔHD：

WP

www.rohm.com

3/16

2010.09 - Rev.

BU99901GUZ-W

A

●Pin assignment and function

B

B1

TEST

A1

SDA

B2

GND

A2

SCL

B3

VDD

A3

WP

1

2

3

Fig.3 BU99901GUZ-W(bottom view)

Land No. Terminal name Input / output Unit

B3 VDD － Power Supply

B2 GND － Reference voltage of all input / output

B1 TEST Input TEST terminal, Connect GND

A3 WP Input Write protect terminal

Technical Note

A2 SCL Input Serial clock input

A1 SDA Input /output Slave and word address, Serial data input serial data output

●Characteristic data (The following values are Typ. ones.)

6

Ta=-40℃

5

Ta=25℃ Ta=85℃

4

3

VIH1,2(V)

2

1

0

0123456

Fig.4　'H' input voltage　V

1

0.8

Ta=-40℃

0.6

Ta=25℃ Ta=85℃

VOL2(V)

0.4

0.2

0

0123456

Fig.7　'L' output voltage VOL-IOL(Vcc=2.5V)

SPEC

Vcc(V)

1,2 (SCL,SDA,WP)

IH

SPEC

IOL2(mA)

6

5

Ta=-40℃ Ta=25℃ Ta=85℃

4

3

VIL1,2(V)

2

1

0

0123456

Fig.5　'L' input voltage　V

1.2

1

0.8

0.6

Ta=-40℃

ILI(uA)

Ta=25℃

0.4

Ta=85℃

0.2

0

0123456

Fig.8　Input leak current I

SPEC

Vcc(V)

SPEC

(SCL,SDA,WP)

IL

(SCL,WP)

LI

1

Ta=-40℃

0.8

Ta=25℃ Ta=85℃

0.6

VOL1(V)

0.4

SPEC

0.2

0

0123456

Fig.6 'L' output voltage VOL-IOL(Vcc=1.7V)

1.2

1

0.8

0.6

ILO(uA)

Ta=-40℃

0.4

Ta=25℃ Ta=85℃

0.2

0

0123456

IOL1(mA)

SPEC

Vcc(V)

Fig.9　Output leak current

www.rohm.com

4/16

2010.09 - Rev.

BU99901GUZ-W

A

(

)

●Characteristic data (The following values are Typ. ones.)

4.5

4

3.5

3

ICC1(mA)

Ta=-40℃ Ta=25℃

2.5

Ta=85℃

2

1.5

1

0.5

0

0123456

Fig.10　Current consumption at WRITE operation Icc1

0.6

0.5

0.4

Ta=-40℃ Ta=25℃

0.3

Ta=85℃

ICC2(mA)

0.2

0.1

0

0123456

Fig.13 Current consumption at READ operation　Iｃｃ2

5

4

3

Ta=-40℃ Ta=25℃ Ta=85℃

2

tHIGH(us)

1

0

0123456

SUPPLY VOLTAGE : Vcc(V)

Fig.16 Data clock High Period

SPEC

Vcc(V)

(fscl=400kHz)

SPEC

Vcc(V)

fscl=100kHz)

（

SPEC

tHIGH

2

1.5

1

Ta=-40℃ Ta=25℃ Ta=85℃

ICC2(mA)

0.5

0

-0.5 0123456

Fig.11 Current consumption at READ operation Iｃｃ2

2.5

2

1.5

Ta=-40℃ Ta=25℃

ISB(uA)

Ta=85℃

1

0.5

0

0123456

Fig.14　Stanby operation ISB

5

4

Ta=-40℃

3

Ta=25℃ Ta=85℃

2

tLOW(us)

1

0

0123456

Fig.17 Data clock Low Period　tLOW

5.9

4.9

3.9

2.9

tSU:STA(us)

1.9

0.9

-0.1 0123456

Fig.19　Start Condition Setup Time

300

200

(ns)

100

0

Ta=-40℃

tSU: DAT(HIGH)

Ta=25℃

-100

Ta=85℃

-200 0123456

Fig.22　Input Data Setup Time

Ta=-40℃ Ta=25℃ Ta=85℃

SPEC

Vcc(V)

t

Vcc(V)

SPEC

SU : STA

ｔSU: DAT(HIGH)

50

0

-50

-100

Ta=-40℃

tHD:DAT(HIGH) (ns)

tSU : DAT(LOW) (ns)

Ta=25℃

-150

Ta=85℃

-200 0123456

Fig.20　Input Data Hold Time

300

200

100

0

Ta=-40℃

-100

-200

Ta=25℃ Ta=85℃

0123456

Fig.23　Input Data Setup Time tSU : DAT(LOW)

Vcc(V)

(fscl=400kHz)

SPEC

Vcc(V)

SPEC

Vcc（V）

SPEC

Vcc(V)

tHD : DAT

SPEC

Vcc(V)

SPEC

（HIGH）

Technical Note

3.5

3

2.5

Ta=-40℃

2

Ta=25℃ Ta=85℃

1.5

ICC1(mA)

1

0.5

0

0123456

Fig.12　Current consumption at WRITE operation Icc1

10000

1000

100

10

fSCL（ｋHZ）

Ta=-40℃ Ta=25℃

1

Ta=85℃

0.1 0123456

Fig.15　SCL frequency fSCL

5

4

3

Ta=-40℃ Ta=25℃ Ta=85℃

2

tHD : STA(us)

1

0

0123456

Fig.18 Start Condition Hold Time

50

0

-50

-100

tHD :DAT(ns)

-150

-200

Ta=-40℃ Ta=25℃ Ta=85℃

0123456

Fig.21　Input Data Hold Time

4

Ta=-40℃ Ta=25℃ Ta=85℃

3

2

tPD0(us)

1

0

0123456

Fig.24 Data output delay time tPD0

SPEC

Vcc(V)

fscl=100kHz

SPEC

Vcc(V)

SPEC

Vcc(V)

t

HD : STA

SPEC

Vcc(V)

ｔHD : DAT(LOW）

SPEC

Vcc(V)

www.rohm.com

5/16

2010.09 - Rev.

BU99901GUZ-W

A

●Characteristic data (The following values are Typ. ones.)

4

tPD1(us)

3

2

1

Ta=-40℃ Ta=25℃ Ta=85℃

SPEC

0

0123456

Fig.25 Data output delay time

1

0.8

Ta=-40℃

0.6

Ta=25℃ Ta=85℃

0.4

tI(SCL H) (us)

0.2

Vcc(V)

SPEC

0

0123456

Fig.28 Noise reduction efection time

Vcc(V)

ｔPD1

tI（SCL H）

5

4

Ta=-40℃ Ta=25℃

3

Ta=85℃

tBUF(us)

2

1

0

0123456

Fig.26 BUS open time before transmission

0.6

Ta=-40℃

0.5

Ta=25℃ Ta=85℃

0.4

0.3

tI(SCL L) (us)

0.2

0.1

0

0123456

Fig.29　Noise reduction efection time

0.6

0.5

0.4

Ta=-40℃

0.3

Ta=25℃ Ta=85℃

0.2

tI(SAD L) (us)

0.1

0

0123456

Fig.31 Noise reduction efection time tI（SDA L

Vcc(V)

SPEC

）

0.2

0.1

0

Ta=-40℃

-0.1

Ta=25℃ Ta=85℃

-0.2

-0.3

tSU : WP(us)

-0.4

-0.5

-0.6 0123456

Fig.32 WP setup time

Vcc(V)

SPEC

Vcc(V)

SPEC

　tI（SCL L）

tSU : WP

　ｔBUF

Technical Note

6

5

4

3

tWR(ms)

2

Ta=-40℃ Ta=25℃

1

Ta=85℃

0

0123456

Fig.27 Internal writing cycle time

0.6

0.5

0.4

0.3

tI(SDA H) (us)

0.2

0.1

0

0246

Fig.30　Noise reduction efection time

1.2

1

0.8

0.6

0.4

tHIGH : WP(us)

Ta=-40℃ Ta=25℃

0.2

Ta=85℃

0

0123456

Fig.33 WP efective time

Vcc(V)

SPEC

Vcc(V)

SPEC

Ta=-40℃ Ta=25℃ Ta=85℃

SPEC

　ｔWR

　ｔI（SDA H）

tHIGH : WP

www.rohm.com

6/16

2010.09 - Rev.

ROHM BU99901GUZ-W Technical data

Specifications and Main Features

Frequently Asked Questions

User Manual