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PDF BU9889GUL-W Data sheet ( Hoja de datos )
| Número de pieza | BU9889GUL-W | |
| Descripción | WL-CSP EEPROM family I2C BUS | |
| Fabricantes | ROHM Semiconductor | |
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High Reliability Series Serial EEPROM Series
WL-CSP EEPROM family
I2C BUS
BU9889GUL-W
●Description
BU9889GUL-W is a serial EEPROM of I2C BUS interface method.
●Features
1) Completely conforming to the world standard I2C BUS.
All controls available by 2 ports of serial clock (SCL) and serial data (SDA)
2) 1k words×8 bits architecture 8kbit serial EEPROM.
3) Other devices than EEPROM can be connected to the same port, saving microcontroller port.
4) 1.7～5.5V single power source action most suitable for battery use.
5) FAST MODE 400kHz at 1.7～5.5V
6) Page write mode useful for initial value write at factory shipment.
7) Auto erase and auto end function at data rewrite.
8) Low current consumption
At write operation (5V)
: 0.5mA (Typ.)
At read operation (5V)
: 0.2mA (Typ.)
At standby operation (5V) : 0.1µA (Typ.)
9) Write mistake prevention function
Write (write protect) function added
Write mistake prevention function at low voltage
10) WLCSP6pin compact package
11) Data rewrite up to 100,000 times
12) Data kept for 40 years
13) Noise filter built in SCL / SDA terminal
14) Shipment data all address FFh
●Absolute maximum ratings (Ta=25℃)
Parameter
symbol
Limits
Impressed voltage
Permissible dissipation
VCC -0.3+6.5
Pd 220*1
Storage temperature range
Tstg -65+125
Action temperature range
Topr -40+85
Terminal voltage
- -0.3～Vcc+1.0
*1 When using at Ta=25℃ or higher, 2.2mW to be reduced per 1℃
Unit
V
mW
℃
℃
V
●Memory cell characteristics (Ta=25℃, Vcc=1.7～5.5V)
Parameter
Limits
Min. Typ.
Number of data rewrite times *1
100,000
-
Data hold years *1
40 -
*1 Not 100% TESTED
Max.
-
-
Unit
Times
Years
●Recommended operating conditions
Parameter
Symbol
Power source voltage
Vcc
Input voltage
VIN
Limits
1.7～5.5
0～Vcc
Unit
V
No.10001EAT07
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
1/17
2010.01 - Rev.A
1 page  
BU9889GUL-W
●Characteristic data (The following values are Typ. ones.)
Technical Note
www.DataSheet4U.com
2.5
SPEC
2
1.5
Ta=-40℃
1 Ta=25℃
Ta=85℃
0.5
0
0123456
SUPPLY VOLTAGE : Vcc(V)
Fig.9 Current consumption at WRITE operation ICC1
(fscl=400kHz)
10000
1000
SPEC
100
Ta=-40℃
10 Ta=25℃
Ta=85℃
1
0.1
0
12345
SUPPLY VOLTAGE : Vcc(V)
Fig.12 SCL frequency fSCL
6
5
SPEC
4
3
Ta=-40℃
2 Ta=25℃
Ta=85℃
1
0
0123456
SUPPLY VOLTAGE : Vcc(V)
Fig.15 Start Condition Hold Time tHD :
STA
50
SPEC
0
-50
-100 Ta=-40℃
Ta=25℃
-150 Ta=85℃
-200
0
12345
SUPPLY VOLTAGE : Vcc(V)
Fig.18 Input Data Hold Time
ｔHD : DAT(LOW）
4
Ta=-40℃
Ta=25℃
3 Ta=85℃
SPEC
2
6
1
0
012345
SUPPLY VOLTAGE : Vcc(V)
Fig.21 'L' Data output delay time tPD0
6
0.6
SPEC
0.5
0.4
0.3 Ta=-40℃
Ta=25℃
0.2 Ta=85℃
0.1
0
0123456
SUPPLY VOLTAGE : Vcc(V)
Fig.10 Current consumption at READ operation ICC2
(fscl=400kHz)
5
SPEC
4
3
Ta=-40℃
Ta=25℃
2 Ta=85℃
1
0
0123456
SUPPLY VOLTAGE : Vcc(V)
Fig.13 Data clock High Period tHIGH
5.9
4.9
3.9
2.9 Ta=-40℃
Ta=25℃
1.9 Ta=85℃
0.9
SPEC
-0.1
0
12345
SUPPLY VOLTAGE : Vcc(V)
6
Fig.16 Start Condition Setup Time tSU :
STA
300
200
SPEC
100
0
Ta=-40℃
Ta=25℃
-100 Ta=85℃
-200
0
12345
SUPPLY VOLTAGE : Vcc(V)
Fig.19 Input Data Setup Time
ｔSU: DAT(HIGH)
6
4
Ta=-40℃
Ta=25℃
3 Ta=85℃
SPEC
2
1
0
0123456
SUPPLY VOLTAGE : Vcc(V)
Fig.22 'H' Data output delay time ｔPD1
2.5
2
1.5
1
0.5
0
0
SPEC
Ta=-40℃
Ta=25℃
Ta=85℃
12345
SUPPLY VOLTAGE : Vcc(V)
Fig.11 Stanby operation ISB
6
5
4 SPEC
3
Ta=-40℃
2 Ta=25℃
Ta=85℃
1
0
0123456
SUPPLY VOLTAGE : Vcc（V）
Fig.14 Data clock Low Period tLOW
50
SPEC
0
-50
-100
Ta=-40℃
Ta=25℃
Ta=85℃
-150
-200
0
300
12345
SUPPLY VOLTAGE : Vcc(V)
Fig.17 Input Data Hold Time
tHD : DAT（HIGH）
6
200
SPEC
100
0 Ta=-40℃
Ta=25℃
-100 Ta=85℃
-200
0
12345
SUPPLY VOLTAGE : Vcc(V)
Fig.20 Input Data setup time
tSU : DAT(LOW)
5
Ta=-40℃
4 Ta=25℃
Ta=85℃
3
6
2
SPEC
1
0
0123456
SUPPLY VOLTAGE : Vcc(V)
Fig.23 BUS open time before transmission ｔ
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
5/17
2010.01 - Rev.A
5 Page 
BU9889GUL-W
Technical Note
www.DataSheet4U.com
●Software reset
Software reset is executed when to avoid malfunction after power on, and to reset during command input. Software reset
has several kinds, and 3 kids of them are shown in the figure below. (Refer to Fig.38(a), Fig.38(b), Fig.38(c).) In dummy
clock input area, release the SDA bus ('H' by pull up). In dummy clock area, ACK output and read data '0' (both 'L' level)
may be output from EEPROM, therefore, if 'H' is input forcibly, output may conflict and over current may flow, leading to
instantaneous power failure of system power source or influence upon devices.
SCL
SDA
SCL
SDA
Dummy clock×14
Start×2
12
13 14
Normal command
Normal command
Fig.38-(a) The case of 14 Dummy clock + START + START+ command input
Start
Dummy clock×9
Start
12
89
Normal command
Normal command
Fig.385-(b) The case of START+9 Dummy clock + START + command input
SCL
SDA
Start×9
1 23
7 89
Fig.38-(c) START × 9 + command input
Normal command
Normal command
* Start command from START input.
●Acknowledge polling
During internal write, all input commands are ignored, therefore ACK is not sent back. During internal automatic write
execution after write cycle input, next command (slave address) is sent, and if the first ACK signal sends back 'L', then it
means end of write action, while if it sends back 'H', it means now in writing. By use of acknowledge polling, next command
can be executed without waiting for tWR = 5ms.
When to write continuously, R/W = 0, when to carry out current read cycle after write, slave address R/W = 1 is sent, and if
ACK signal sends back 'L', then execute word address input and data so forth.
First write command
S
T
A
R
T
Write command
S
T
O
P
During internal write,
ACK = HIGH is sent back.
S
T
A
Slave
address
R
T
A
C
K
H
tWR
S
T
A
Slave
R address
T
A
C
K
H
Second write command
…
…
S
T Slave
A
R
address
T
A
C
K
H
tWR
S
T Slave
A
R
address
T
A
C
K
L
Word
address
A
C
K
L
Data
AS
CT
KO
LP
After completion of internal
write, ACK=LOW is sent back,
so input next word address and
data in succession.
Fig.39 Case to continuously write by acknowledge polling
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
11/17
2010.01 - Rev.A
11 Page | ||
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| PDF Descargar | [ Datasheet BU9889GUL-W.PDF ] | |
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