ROHM BU9897GUL-W Technical data
A
High Reliability Series Serial EEPROMs
WL-CSP EEPROM family
I2C BUS
BU9897GUL-W
●Description
BU9897GUL-W is a serial EEPROM of I
Memory density is 128Kbit (16,384×8bit) , compact package VCSP50L2.
●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 ~ 5.5V single power source action most suitable for battery use.
4) FAST MODE 400kHz at 1.7 ~ 5.5V
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 (5.0V) : 0.5mA (Typ.)
At read operation (5.0V) : 0.2mA (Typ.)
At standby operation (5.0V) : 0.1µA (Typ.)
8) Write mistake prevention function
Write (write protect) function added
Write mistake prevention function at low voltage
9) Data rewrite up to 1,000,000 times
10) Data kept for 40 years
11) Noise filter built in SCL / SDA terminal
12) Shipment data all address FFh
●Page write
2
C BUS interface method.
2
C BUS.
No.10001EAT24
Product number Number of pages
BU9897GUL-W 64Byte
●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.
●Recommended operating conditions
Parameter Symbol Ratings Unit
Power source voltage VCC 1.7 ~ 5.5
Input voltage VIN 0 ~ VCC
V
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© 2011 ROHM Co., Ltd. All rights reserved.
1/16
2011.10 - Rev.
BU9897GUL-W
A
●Memory cell characteristics (Ta=25℃, Vcc=1.7~5.5V)
Parameter
Min. Typ. Max.
Limits
Number of data rewrite times *1 1,000,000 － － Times
Data hold years *1 40 － － Years
*1 Not 100% TESTED
●Electrical characteristics (Unless otherwise specified Ta=-40~85℃, V
Parameter Symbol
Min Typ. Max.
Limits
Technical Note
Unit
CC=1.7~5.5V)
Unit Condition
"H" Input Voltage1 V
"L" Input Voltage1 V
"L" Output Voltage1 V
"L" Output Voltage2 V
0.7V
IH1
－0.3 － 0.3Vcc V
IL1
－ － 0.4 V IOL=3.0mA, 2.5V≦VCC≦5.5V(SDA)
OL1
－ － 0.2 V IOL=0.7mA, 1.7V≦VCC＜2.5V(SDA)
OL2
－ VCC+1.0 V
CC
Input Leakage Current ILI －1 － 1 µA VIN=0V ~ VCC
Output Leakage Current ILO －1 － 1 µA V
I
CC1
－ － 2.5 mA
Current consumption
at action
I
－ － 0.5 mA
CC2
=0V ~ VCC(SDA)
OUT
VCC=5.5V , f
=400kHz, tWR=5ms
SCL
Byte Write, Page Write
V
=5.5V , f
CC
=400kHz
SCL
Random read, Current read,
Sequential read
Standby Current ISB － － 2.0 µA VCC=5.5V , SDA・SCL=VCC, WP=GND
○This product is not designed for protection against radioactive rays.
●Action timing characteristics(Unless otherwise specified Ta=-40 ~ 85℃､V
Parameter Symbol
=1.7 ~ 5.5V)
CC
Limits
Min. Typ. Max.
Unit
SCL Frequency fSCL － － 400 kHz
Data clock "High" time tHIGH 0.6 － － µs
Data clock "Low" time tLOW 1.2 － － µs
SDA, SCL rise time *1 tR － － 0.3 µs
SDA, SCL fall time *1 tF － － 0.3 µs
Start condition hold time tHD:STA 0.6 － － µs
Start condition setup time tSU:STA 0.6 － － µs
Input data hold time tHD:DAT 0 － － ns
Input data setup time tSU:DAT 100 － － ns
Output data delay time tPD 0.1 － 0.9 µs
Output data hold time tDH 0.1 － － µs
Stop condition data setup time tSU:STO 0.6 － － µs
Bus release time before transfer start tBUF 1.2 － － µs
Internal write cycle time tWR － － 5 ms
Noise removal valid period (SDA,SCL terminal) tI － － 0.1 µs
WP hold time tHD:WP 0 － － ns
WP setup time tSU:WP 0.1 － － µs
WP valid time tHIGH:WP 1.0 － － µs
*1 : Not 100% TESTED
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© 2011 ROHM Co., Ltd. All rights reserved.
2/16
2011.10 - Rev.
BU9897GUL-W
A
A
A
A
A
g
g
●Sync data input/output timing
SCL
SDA
(Input)
SDA
(Output)
○Input read at the rise edge of SCL
○Data output in sync with the fall of SCL
tHD :STA tHD :DAT
tBUF
Fig.1-(a) Sync data input / output timing
SCL
tSU :STA tSU :STO tHD :STA
SDA
START BIT
Fig.1-(b) Start - stop bit timing
SCL
SDA
WRITE DATA(n)
D0
ACK
STOP
CONDITION
Fig.1-(c) Write cycle timing
●Block diagram
1
A0
A1
2
A2
3
GND
High voltage
generating circuit
tSU :DAT
Adddress
decoder
tR tF
tHIGH
tLOW
tPD tDH
tWR
START
CONDITION
128Kbit EEPROM array
14bit
14bit
START STOP
Control circuit
SCL
SD
WP
SCL
SDA
STOP BIT
WP
Slave - word
address register
Power source
volta
e detection
Fig.2 Block diagram
Technical Note
DATA(1)
D1 D0ACK
tSU：WP
Fig.1-(d) WP timing at write execution
DATA(1)
D1 D0
○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.
Fig.1-(e) WP timing at write cancel
8bit
Data
ister
re
ACK
CK
DATA(n)
tHIGH:WP
DATA(n)
8
7
6
5 4
Vcc
WP
SCL
SDA
CK
Stop condition
CK
tWR
tHD：WP
tWR
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© 2011 ROHM Co., Ltd. All rights reserved.
3/16
2011.10 - Rev.
BU9897GUL-W
A
A
●Pin assignment and description
Land No.
Terminal
name
C4 GND - Please set this OPEN. Please don’t connect this GND.
C3 A1 Input Slave address
C
VSS
A2
A1
VSS
B
SDA
A0
VSS
SCL WP
1
2
Vcc
34
VSS
Fig.3 BU9897GUL-W(bottom view)
Input / output Function
Technical Note
C2 A2 input Slave address
C1 GND
B4 GND
-
-
Reference voltage of all input / output
Please set this OPEN. Please don’t connect this GND.
B3 A0 input Slave address
B1 SDA Input / output Slave and word address, Serial data input serial data output
A4 GND
A3 Vcc
-
-
Please set this OPEN. Please don’t connect this GND.
Power Supply
A2 WP input Write protect terminal
A1 SCL input Serial clock input
●Characteristic data (The following values are Typ. ones.)
6
Ta=-40℃
5
Ta=25℃
(V)
IH
Ta=85℃
4
3
2
H INPUT VOLTAGE : V
1
0
0123456
1
(V)
0.8
OL
Ta=-40℃
0.6
Ta=25℃
Ta=85℃
0.4
SPEC
SUPPLY VOLTAGE : Vcc(V)
Fig.4 'H' input voltage V
(A0,A1,A2,SCL,SDA,WP)
SPEC
0.2
L OUTPUT VOLTAGE : V
0
0123456
L OUTPUT CURRENT : I
Fig.7 'L' output voltage VOL-IOL(Vcc=2.5V)
IH
(mA)
OL
6
5
Ta=-40℃
(V)
Ta=25℃
IL
Ta=85℃
4
3
2
L INPUT VOLTAGE : V
1
0
0123456
SUPPLY VOLTAGE : Vcc(V)
Fig.5 'L' input voltage V
(A0,A1,A2,SCL,SDA,WP)
1.2
(uA)
LI
0.8
0.6
0.4
0.2
INPUT LEAK CURRENT : I
1
0
0123456
SPEC
Ta=-40℃
Ta=25℃
Ta=85℃
SUPPLYVOLTAGE : Vcc(V)
Fig.8 Input leak current I
SPEC
IL
(A0,A1,A2,SCL,WP)
LI
0.6
0.5
(V)
L OUTPUT VOLTAGE : V
OL
(uA)
LO
OUTPUT LEAK CURRENT : I
0.4
0.3
0.2
0.1
0
1.2
0.8
0.6
0.4
0.2
SPEC
012345678
L OUTPUT CURR ENT : I
Fig.6 'L' output voltage VOL-IOL(Vcc=1.7V)
1
Ta=-40℃
Ta=25℃
Ta=85℃
0
0123456
SUPPLY VOLTAGE : Vcc(V)
Fig.9 Output leak current I
Ta=-40℃
Ta=25℃
Ta=85℃
SPEC
(mA)
OL
(SDA)
LO
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© 2011 ROHM Co., Ltd. All rights reserved.
4/16
2011.10 - Rev.
BU9897GUL-W
A
●Characteristic data (The following values are Typ. ones.)
2.5
3.5
3
2
2.5
1.5
2
Ta=-40℃
Ta=-40℃
Ta=25℃
1.5
Ta=25℃
1
Ta=85℃
Ta=85℃
1
AT WRITING : Icc1(mA)
0.5
CURRENT CONSUMPTION
AT WRITING : Icc1(mA)
0.5
CURRENT CONSUMPTION
0
0
0123456
0123456
SUPPLY VOLTAGE : Vcc(V)
SUPPLY VOLTAGE : Vcc(V)
Fig.10 Current consumption at WRITE operation ICC1
10000
SPEC
SPEC
(fscl=400kHz)
0.6
0.5
0.4
0.3
0.2
AT READING : Icc2(mA)
0.1
CURRENT CONSUMPTION
Fig.11 Current consumption at READ operation I
Ta=-40℃
Ta=25℃
Ta=85℃
0
0123456
5
1000
100
10
1
SCL FREQUENCY : fｓｃｌ（ｋHZ）
0.1
0123456
SUPPLY VOLTAGE : Vcc(V)
Fig.13 SCL frequency f
(us)
5
HD : STA
4
3
Ta=-40℃
2
Ta=25℃
Ta=85℃
1
0
START CONDITION HOLD TIME : t
0123456
SUPPLY VOLTAGE : Vcc(V)
Ta=-40℃
Ta=25℃
Ta=85℃
SPEC
SPEC
SCL
4
(uA)
HIGH
3
Ta=-40℃
Ta=25℃
2
Ta=85℃
1
DATA CLK H TIME : t
0
0123456
SUPPLY VOLTAGE : Vcc(V)
Fig.14 Data clock High Period t
5.9
4.9
3.9
2.9
Ta=-40℃
Ta=25℃
1.9
Ta=85℃
START CONDITION
0.9
SET UP TIME : tSU:STA(uA)
-0.1
0123456
Fig.16 Start Condition Hold Time t
HD : STA
Fig.17 Start Condition Setup Time t
50
(ns)
0
HD :DAT
-50
-100
-150
INPUT DATA HOLD TIME : t
-200
0123456
Fig.19 Input Data Hold Time
SPEC
Ta=-40℃
Ta=25℃
Ta=85℃
SUPPLY VOLTAGE : Vcc(V)
ｔ
HD : DAT
(LOW）
300
(ns)
200
SU: DAT
100
0
-100
-200
INPUT DATA SE T UP TIME : t
0123456
Fig.20 Input Data Setup Time
(us)
4
Ta=-40℃
PD
Ta=25℃
3
Ta=85℃
2
SPEC
(us)
PD
4
3
2
Ta=-40℃
Ta=25℃
Ta=85℃
1
1
0
OUTPUT DATA DELAY TIME : t
0123456
SUPPLY VOLTAGE : Vcc(V)
' Data output delay time
Fig.22 'L
tPD0
OUTPUT DATA DELAY TIME : t
0
0123456
Fig.23 'H' Data output delay time
SPEC
SUPPLY VOLTAGE : Vcc(V)
(fscl=400kHz)
SPEC
SPEC
SUPPLY VOLTAGE : Vcc(V)
SPEC
Ta=-40℃
Ta=25℃
Ta=85℃
SUPPLY VOLTAGE : Vcc(V)
ｔ
SPEC
SUPPLY VOLTAGE : Vcc(V)
SU: DAT
SU : STA
(HIGH)
ｔPD1
HIGH
Technical Note
2.5
SPEC
SPEC
SPEC
SPEC
SPEC
HD : DAT
SU : DAT
SB
LOW
（HIGH）
(LOW)
ｔ
BUF
2
(uA)
SB
1.5
Ta=-40℃
1
Ta=25℃
Ta=85℃
0.5
STANBY CURRENT : I
0
0123456
SUPPLY VOLTAGE : Vcc(V)
2
CC
(ns)
HD: STA
INPUT DATA HOLD TIME : t
(ns)
SU : DAT
INPUT DATA SET UP TIME : t
Fig.12 Stanby operation I
5
(us)
4
LOW
3
Ta=-40℃
Ta=25℃
2
Ta=85℃
1
ＤＡＴＡ CLK L TIME : t
0
0123456
SUPPLY VOLTAGE : Vcc（V）
Fig.15 Data clock Low Period t
50
0
-50
Ta=-40℃
-100
Ta=25℃
Ta=85℃
-150
-200
0123456
SUPPLY VOLTAGE : Vcc(V)
Fig.18 Input Data Hold Time t
300
200
100
0
Ta=-40℃
Ta=25℃
-100
Ta=85℃
-200
0123456
SUPPLY VOLTAGE : Vcc(V)
Fig.21 Input Data setup time t
5
(us)
Ta=-40℃
BUF
4
Ta=25℃
Ta=85℃
3
2
BUS OPEN TIME
1
BEFORE TRANSMISSION : t
0
0123456
SUPPLY VOLTAGE : Vcc(V)
Fig.24 BUS open time before transmission
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5/16
2011.10 - Rev.
BU9897GUL-W
A
●Characteristic data (The following values are Typ. ones.)
6
5
(ms)
WR
4
3
2
INTERNAL WRITING
CYCLE TIME : t
1
0
0123456
Fig.25 Internal writing cycle time
SPEC
Ta=-40℃
Ta=25℃
Ta=85℃
SUPPLY VOLTAGE : Vcc(V)
ｔ
WR
1
0.8
Ta=-40℃
(SCL H) (us)
Ta=25℃
l
0.6
Ta=85℃
0.4
NOISE REDUCTION
0.2
EFECTIVE TIME : t
0
0123456
SUPPLY VOLTAG E : Vcc(V)
Fig.26 Noise reduction efection time
0.6
0.5
0.4
(SDA H)(us)
l
0.3
0.2
NOISE REDUCTION
0.1
EFECTIVE TIME : t
0
0246
SUPPLY VOLATGE : Vcc(V)
Fig.28 Noise resuction efecctive time
1.2
(us)
1
HIGH : WP
0.8
0.6
0.4
Ta=-40℃
Ta=25℃
0.2
WP EFFECTIVE TIME : t
Ta=85℃
0
0123456
SUPPLYVOLTAGE : Vcc(V)
Fig.31 WP efective time
SPEC
SPEC
Ta=-40℃
Ta=25℃
Ta=85℃
t
HIGH : WP
（SDA H）
ｔ
ｌ
0.6
0.5
0.4
(SAD L)(us)
l
0.3
Ta=-40℃
Ta=25℃
0.2
NOISE REDUCTION
Fig.29 Noise reduction efective time t
Ta=85℃
0.1
EFFECTIVE TIME : t
0
0123456
SUPPLY VOLTAGE : Vcc(V)
SPEC
SPEC
（SCL H）
t
l
SDA L
（
l
Technical Note
0.6
Ta=-40℃
0.5
Ta=25℃
Ta=85℃
0.4
(SCL L)(us)
l
0.3
0.2
NOISE REDUCTION
0.1
EFECTIVE TIME : t
0
0123456
Fig.27 Noise reduction efective time
0.2
0.1
(us)
0
SU : WP
-0.1
-0.2
-0.3
-0.4
WP SET UP TIME : t
-0.5
-0.6
0123456
）
SPEC
SUPPLY VOLTAGE : Vcc(V)
SPEC
Ta=-40℃
Ta=25℃
Ta=85℃
SUPPLY VOLTAGE : Vcc(V)
Fig.30 WP setup time
t
SU : WP
t
（SCL L）
l
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© 2011 ROHM Co., Ltd. All rights reserved.
6/16
2011.10 - Rev.
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