High Reliability Series Serial EEPROMs
WL-CSP EEPROM family
2
I C BUS
BU9897GUL-W
●Description
2
BU9897GUL-W is a serial EEPROM of I C BUS interface method.
Memory density is 128Kbit (16,384×8bit) , compact package VCSP50L2.
●Features
2
1) Completely conforming to the world standard I C BUS.
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
Product number
BU9897GUL-W
Number of pages
64Byte
No.10001EAT24
●Absolute
maximum ratings (Ta=25℃)
Parameter
Impressed voltage
Permissible dissipation
Storage temperature range
Action temperature range
Terminal voltage
symbol
V
CC
Pd
Tstg
Topr
－
Ratings
-0.3 ~ 6.5
220
*1
Unit
V
mW
℃
℃
*2
-65 ~ 125
-40 ~ 85
-0.3 ~ V
CC
+1.0
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
Power source voltage
Input voltage
Symbol
V
CC
V
IN
Ratings
1.7 ~ 5.5
0 ~ V
CC
Unit
V
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© 2011 ROHM Co., Ltd. All rights reserved.
1/16
2011.10 - Rev.A
BU9897GUL-W
●Memory
cell characteristics (Ta=25℃, Vcc=1.7~5.5V)
Parameter
Number of data rewrite times
Data hold years
*1
*1
Technical Note
Limits
Min.
1,000,000
40
Typ.
－
－
Max.
－
－
Unit
Times
Years
*1 Not 100% TESTED
●Electrical
characteristics (Unless otherwise specified Ta=-40~85℃, V
CC
=1.7~5.5V)
Limits
Parameter
Symbol
Unit
Min
Typ.
Max.
"H" Input Voltage1
"L" Input Voltage1
"L" Output Voltage1
"L" Output Voltage2
Input Leakage Current
Output Leakage Current
V
IH1
V
IL1
V
OL1
V
OL2
I
LI
I
LO
I
CC1
Current consumption
at action
I
CC2
I
SB
0.7V
CC
－0.3
－
－
－1
－1
－
－
－
－
－
－
－
－
－
－
－
－
V
CC
+1.0
0.3Vcc
0.4
0.2
1
1
2.5
0.5
2.0
V
V
V
V
µA
µA
mA
mA
µA
Condition
I
OL
=3.0mA, 2.5V≦V
CC
≦5.5V(SDA)
I
OL
=0.7mA, 1.7V≦V
CC
＜2.5V(SDA)
V
IN
=0V ~ V
CC
V
OUT
=0V ~ V
CC
(SDA)
V
CC
=5.5V , f
SCL
=400kHz, tWR=5ms
Byte Write, Page Write
V
CC
=5.5V , f
SCL
=400kHz
Random read, Current read,
Sequential read
V
CC
=5.5V , SDA・SCL=V
CC
, WP=GND
Standby Current
○This
product is not designed for protection against radioactive rays.
●Action
timing characteristics(Unless otherwise specified Ta=-40 ~ 85℃½V
CC
=1.7 ~ 5.5V)
Parameter
SCL Frequency
Data clock "High" time
Data clock "Low" time
SDA, SCL rise time
SDA, SCL fall time
*1
*1
Symbol
fSCL
tHIGH
tLOW
tR
tF
tHD:STA
tSU:STA
tHD:DAT
tSU:DAT
tPD
tDH
tSU:STO
tBUF
tWR
tI
tHD:WP
tSU:WP
tHIGH:WP
Limits
Min.
－
0.6
1.2
－
－
0.6
0.6
0
100
0.1
0.1
0.6
1.2
－
－
0
0.1
1.0
Typ.
－
－
－
－
－
－
－
－
－
－
－
－
－
－
－
－
－
－
Max.
400
－
－
0.3
0.3
－
－
－
－
0.9
－
－
－
5
0.1
－
－
－
Unit
kHz
µs
µs
µs
µs
µs
µs
ns
ns
µs
µs
µs
µs
ms
µs
ns
µs
µs
Start condition hold time
Start condition setup time
Input data hold time
Input data setup time
Output data delay time
Output data hold time
Stop condition data setup time
Bus release time before transfer start
Internal write cycle time
Noise removal valid period (SDA,SCL terminal)
WP hold time
WP setup time
WP valid time
*1 : Not 100% TESTED
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© 2011 ROHM Co., Ltd. All rights reserved.
2/16
2011.10 - Rev.A
BU9897GUL-W
●Sync
data input/output timing
tR
SCL
tHD :STA
tSU :DAT
tLOW
tHD :DAT
tF
tHIGH
Technical Note
SCL
DATA(1)
SDA
tBUF
tPD
tDH
DATA(n)
ACK
ACK
tWR
(Input)
SDA
SDA
D1
D0
(Output)
WP
Stop condition
○Input
read at the rise edge of SCL
○Data
output in sync with the fall of SCL
tSU
：
WP
tHD
：
WP
Fig.1-(a) Sync data input / output timing
Fig.1-(d) WP timing at write execution
SCL
tSU :STA
SDA
tHD :STA
tSU :STO
SCL
DATA(1)
SDA
D1
D0
ACK
tHIGH:WP
WP
DATA(n)
ACK
tWR
START BIT
STOP BIT
Fig.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.
SCL
SDA
D0
ACK
WRITE DATA(n)
STOP
CONDITION
t
WR
START
CONDITION
Fig.1-(e) WP timing at write cancel
Fig.1-(c) Write cycle timing
●Block
diagram
A0 1
14bit
128Kbit EEPROM array
8bit
Data
register
8
Vcc
A1 2
Adddress
decoder
14bit
Slave - word
address register
7
WP
START
STOP
A2
3
Control circuit
ACK
6
SCL
GND
4
High voltage
generating circuit
Power source
voltage detection
5
SDA
Fig.2 Block
diagram
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© 2011 ROHM Co., Ltd. All rights reserved.
3/16
2011.10 - Rev.A
BU9897GUL-W
●Pin
assignment and description
Technical Note
C
VSS
B
SDA
A
SCL
1
Fig.3
Land No.
C4
C3
C2
C1
B4
B3
B1
A4
A3
A2
A1
Terminal
name
GND
A1
A2
GND
GND
A0
SDA
GND
Vcc
WP
SCL
WP
2
Vcc
3
VSS
4
A0
VSS
A2
A1
VSS
BU9897GUL-W(bottom view)
Function
Please set this OPEN. Please don’t connect this GND.
Slave address
Slave address
Reference voltage of all input / output
Please set this OPEN. Please don’t connect this GND.
Slave address
Slave and word address, Serial data input serial data output
Please set this OPEN. Please don’t connect this GND.
Power Supply
Write protect terminal
Serial clock input
Input / output
-
Input
input
-
-
input
Input / output
-
-
input
input
●Characteristic
data (The following values are Typ. ones.)
6
H INPUT VOLTAGE : V
IH
(V)
5
4
3
6
5
4
3
2
1
0.6
L INPUT VOLTAGE : V
IL
(V)
Ta=-40℃
Ta=25℃
Ta=85℃
L OUTPUT VOLTAGE : V
OL
(V)
Ta=-40℃
Ta=25℃
Ta=85℃
0.5
SPEC
0.4
0.3
0.2
0.1
0
0
1
Ta=-40℃
Ta=25℃
Ta=85℃
SPEC
2
1
0
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc(V)
6
SPEC
0
0
1
2
3
4
SUPPLY VOLTAGE : Vcc(V)
5
6
2
3
4
5
6
7
L OUTPUT CURRENT : I
OL
(mA)
8
Fig.4 'H' input voltage V
IH
(A0,A1,A2,SCL,SDA,WP)
1
INPUT LEAK CURRENT : I
LI
(uA)
L OUTPUT VOLTAGE : V
OL
(V)
0.8
0.6
0.4
0.2
0
0
1
2
3
4
5
L OUTPUT CURRENT : I
OL
(mA)
6
1.2
1
0.8
0.6
0.4
0.2
0
0
1
Fig.5 'L' input voltage V
IL
(A0,A1,A2,SCL,SDA,WP)
1.2
Fig.6 'L' output voltage V
OL
-I
OL
(Vcc=1.7V)
OUTPUT LEAK CURRENT : I
LO
(uA)
SPEC
1
0.8
0.6
0.4
0.2
0
SPEC
Ta=-40℃
Ta=25℃
Ta=85℃
SPEC
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
2
3
4
SUPPLYVOLTAGE : Vcc(V)
5
6
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc(V)
6
Fig.7 'L' output voltage V
OL
-I
OL
(Vcc=2.5V)
Fig.8 Input leak current I
LI
(A0,A1,A2,SCL,WP)
Fig.9 Output leak current I
LO
(SDA)
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© 2011 ROHM Co., Ltd. All rights reserved.
4/16
2011.10 - Rev.A
BU9897GUL-W
●Characteristic
data (The following values are Typ. ones.)
2.5
3.5
CURRENT CONSUMPTION
CURRENT CONSUMPTION
AT WRITING : Icc1(mA)
AT WRITING : Icc1(mA)
Technical Note
0.6
STANBY CURRENT : I
SB
(uA)
CURRENT CONSUMPTION
AT READING : Icc2(mA)
2.5
2
3
SPEC
SPEC
0.5
0.4
0.3
0.2
0.1
0
SPEC
SPEC
2
1.5
1
0.5
0
2.5
1.5
2
1.5
1
1
Ta=-40℃
Ta=-40℃
Ta=25℃
Ta=25℃
Ta=85℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
0.5
0.5
0
0
0
0
Ta=-40℃
Ta=25℃
Ta=85℃
1
1
2
2
3
3
4
4
5
5
SUPPLY VOLTAGE : Vcc(V)
SUPPLY VOLTAGE : Vcc(V)
6
6
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc(V)
6
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc(V)
6
Fig.10 Current consumption at WRITE operation I
CC
1
(fscl=400kHz)
10000
SCL FREQUENCY : f½½½（½HZ）
Fig.11 Current consumption at READ operation I
CC
2
(fscl=400kHz)
5
DATA CLK H TIME : t
HIGH
(uA)
4
3
2
1
0
ＤＡＴＡ CLK L TIME : t
LOW
(us)
5
Fig.12 Stanby operation I
SB
SPEC
1000
100
10
1
0.1
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc(V)
6
4
3
2
1
0
SPEC
SPEC
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc(V)
6
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc（V）
6
Fig.13 SCL frequency f
SCL
START CONDITION HOLD TIME : t
HD : STA
(us)
5
4
3
2
1
0
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc(V)
6
Fig.14 Data clock High Period t
HIGH
Fig.15 Data clock Low Period t
LOW
50
0
-50
-100
-150
-200
0
1
2
3
4
5
6
SUPPLY VOLTAGE : Vcc(V)
START CONDITION
SET UP TIME : tSU:STA(uA)
SPEC
INPUT DATA HOLD TIME : t
HD: STA
(ns)
5.9
4.9
3.9
2.9
1.9
0.9
-0.1
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc(V)
6
SPEC
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
SPEC
Ta=-40℃
Ta=25℃
Ta=85℃
Fig.16 Start Condition Hold Time t
HD : STA
INPUT DATA SET UP TIME : t
SU: DAT
(ns)
50
Fig.17 Start Condition Setup Time t
SU : STA
300
200
Fig.18 Input Data Hold Time t
HD : DAT
（HIGH）
INPUT DATA SET UP TIME : t
SU : DAT
(ns)
300
200
100
0
-100
-200
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc(V)
6
INPUT DATA HOLD TIME : t
HD :DAT
(ns)
SPEC
0
-50
-100
-150
-200
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc(V)
6
SPEC
100
0
-100
-200
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc(V)
6
SPEC
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Ta=-40℃
Ta=25℃
Ta=85℃
Fig.19 Input Data Hold Time
½
HD : DAT
(LOW）
Fig.20 Input Data Setup Time
½
SU: DAT
(HIGH)
Fig.21 Input Data setup time t
SU : DAT
(LOW)
OUTPUT DATA DELAY TIME : t
PD
(us)
OUTPUT DATA DELAY TIME : t
PD
(us)
3
Ta=-40℃
Ta=25℃
Ta=85℃
SPEC
3
Ta=-40℃
Ta=25℃
Ta=85℃
SPEC
BUS OPEN TIME
BEFORE TRANSMISSION : t
BUF
(us)
4
4
5
4
3
2
1
0
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc(V)
6
Ta=-40℃
Ta=25℃
Ta=85℃
2
2
SPEC
1
1
0
0
1
2
3
4
5
SUPPLY VOLTAGE : Vcc(V)
6
0
0
1
2
3
4
5
6
SUPPLY VOLTAGE : Vcc(V)
Fig.22 'L'
Data output delay time
t
PD
0
Fig.23 'H' Data output delay time
½
PD
1
Fig.24 BUS open time before transmission ½
BUF
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© 2011 ROHM Co., Ltd. All rights reserved.
5/16
2011.10 - Rev.A
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