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PDF BR34E02FVT-3 Data sheet ( Hoja de datos )
| Número de pieza | BR34E02FVT-3 | |
| Descripción | DDR2/DDR3 SPD Memory | |
| Fabricantes | ROHM Semiconductor | |
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Memory for Plug & Play
DDR2/DDR3
SPD Memory (for Memory Modules)
BR34E02FVT-3,BR34E02NUX-3
No.11002EAT05
●Description
BR34E02-3 Series is 256×8 bit Electrically Erasable PROM (Based on Serial Presence Detect)
●Features
1) 256×8 bit architecture serial EEPROM
2) Wide operating voltage range: 1.7V-5.5V
3) Two-wire serial interface
4) Self-Timed Erase and Write Cycle
5) Page Write Function (16byte)
6) Write Protect Mode
Settable Reversible Write Protect Function: 00h-7Fh
Write Protect 1 (Onetime Rom)
: 00h-7Fh
Write Protect 2 (Hardwire WP PIN)
: 00h-FFh
7) Low Power consumption
Write (at 1.7V ) : 0.4mA (typ.)
Read (at 1.7V ) : 0.1mA(typ.)
Standby ( at 1.7V ) : 0.1µA(typ.)
8) DATA security
Write protect feature (WP pin)
Inhibit to WRITE at low VCC
9) Compact package: TSSOP-B8, VSON008X2030
10) High reliability fine pattern CMOS technology
11) Rewriting possible up to 1,000,000 times
12) Data retention: 40 years
13) Noise reduction Filtered inputs in SCL / SDA
14) Initial data FFh at all addresses
www.DataSheet.co.kr
●BR34E02-3 Series
Capacity
Bit format
2Kbit
256X8
Type
BR34E02-3
Power Source Voltage
1.7V～5.5V
TSSOP-B8
●
VSON008X2030
●
●Absolute maximum ratings (Ta=25℃)
Parameter
Symbol
Supply Voltage
VCC
Power Dissipation
Pd
Storage Temperature
Tstg
Operating Temperature
Topr
Terminal Voltage (A0)
-
Terminal Voltage (etcetera)
-
* Reduce by 3.3mW(*1), 3.0 mW(*2)/C over 25C
Ratings
-0.3～+6.5
330(BR34E02FVT-3) *1
300(BR34E02NUX-3)*2
-65～+125
-40～+85
-0.3～10.0
-0.3～VCC+1.0
●Recommended operating conditions
Parameter
Symbol
Ratings
Supply Voltage
Input Voltage
VCC 1.7～5.5
VIN 0～VCC
Unit
V
mW
℃
℃
V
V
Unit
V
V
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
1/19
2011.11 - Rev.A
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
BR34E02FVT-3,BR34E02NUX-3
Technical Note
3.5 SPEC1
3
2.5 ｆSCL=400kHz(VCC≧2.5V)
2
fSCL=100kHz(1.7V≦Vcc＜２．５V)
DATA=AA
1.5 SPEC2
1
Ta=25℃
0.5
Ta=85℃
Ta=-40℃
0
0 1 23 4
VCC[V]
Fig.10 Write Operating Current ICC1,2
(fSCL=100kHz,400kHz)
0.6
SPEC
0.5
0.4 ｆＳＣＬ=100kHz
DATA=AAh
0.3
Ta=85℃
0.2 Ta=25℃
0.1
Ta=-40℃
0
01234
VCC[V]
Fig.11 Read Operating Current ICC3
(fSCL=400kHz)
2.5
SPEC
2
1.5
1
Ta=85℃
0.5 Ta=25℃
Ta=-40℃
0
0 12 34
VCC[V]
Fig.12 Standby Current ISB
10000
1000
100
Ta=85℃Ta=25℃
Ta=-40℃
SPEC2
SPEC1
10
1
0
SPEC1:FAST-MODE
SPEC2:STANDARD-MODE
123
VC C [V]
4
Fig.13 Clock Frequency fSCL
5
SPEC2
4
3
SPEC1:FAST-MODE
SPEC2:STANDARD-MODE
2
Ta=-4T0a℃=25℃
Ta=85℃
1 SPEC1
0
01234
VCC[V]
Fig.14 Data Clock High Period tHigh
5
SPEC2
4
3
SPEC1:FAST-MODE
SPEC2:STANDARD-MODE Ta=85℃
2 SPEC1 Ta=25℃
Ta=-40℃
1
0
01234
VCC[V]
Fig.15 Data Clock Low Period tLow
5
SPEC2
4
3
SPEC1:FAST-MODE
SPEC2:STANDARD-MODE
2
TTaa==-2450℃℃
1
SPEC1
Ta=85℃
0
01234
VCC[V]
Fig.16 Start Condition Hold Time
tHD:STA
50
0 SPEC1,2
SPEC1:FAST-MODE
-50 SPEC2:STANDARD-MODE
-100
Ta=85℃
-150
Ta=25℃
-200
0
1
Ta=-40℃
2 34
VCC[V]
Fig.19 Data Hold Time
tHD:DAT(LOW)
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
5
www.DataSheet.co.kr
SPEC2
4
3
SPEC1:FAST-MODE
SPEC2:STANDARD-MODE
2 TTaa==-2450℃
Ta=85℃
1 SPEC1
0
01234
VCC[V]
Fig.
Start Condition Setup Time
50
0
-50
-100
-150
SPEC1,2
Ta=85℃
Ta=25℃
Ta=-40℃
SPEC1:FAST-MODE
SPEC2:STANDARD-MODE
-200
0
123
VCC[V]
4
Fig.18 Data Hold Time
tHD:DAT(High)
300
200
SPEC1 Ta=85℃
100 Ta=25℃
Ta=-40℃
0
-100
SPEC1:FAST-MODE
SPEC2:STANDARD-MODE
-200
0 12 34
VCC[V]
Fig.20 Input Data Setup Time
tSU:DAT(HIGH)
300
SPEC2
200
100
Ta=85℃
0
-100
-200
0
Ta=25℃
SPEC1:FAST-MODE
Ta=-40℃
SPEC2:STANDARD-MODE
1234
VCC[V]
Fig.21 Input Data Setup Time
tSU:DAT(LOW)
5/19
2011.11 - Rev.A
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
BR34E02FVT-3,BR34E02NUX-3
●Write Protect Cycle
SDA
L IN E
WP
SW
TR
A
R
T
SLAVE
ADDRESS
I
T
E
W ORD
ADDRESS
0 1 1 0 A 2A 1A 0
*
*
*
DATA
S
T
O
P
*
RA
/C
WK
A
C
K
Fig. 38 Permanent Set Write Protect Cycle
A
C
K
*:DO N’T CARE
Technical Note
・Permanent set Write Protect command set data of 00h～7Fh in 256 words write protection block. Cancel of write
protection block which is set by permanent set Write Protect command at once is impossibility. When these commands
are carried out, WP pin must be OPEN or GND.
・Permanent Set Write Protect command needs tWR from stop condition same as Byte Write and Page Write, During tWR,
input command is canceled.
・Refer to P8 about reply of ACK in each protect state.
SDA
L IN E
SW
TR
A
R
T
SLAVE
ADDRESS
I
T
E
W ORD
ADDRESS
www.DataSheet.co.kr
011 0 001
*
*
*
RA
A
/C C
WP
WK
K
Fig. 39 Set Write Protect Cycle
DATA
S
T
O
P
*
A
C
K
*:DO N’T CARE
・Set Write Protect command set data of 00h～7Fh in 256 words write protection block. Clear Write Protect command can
cancel write protection block which is set by set write Protect command. When these commands are carried out, WP
pin must be OPEN or GND.
・Set write Protect command needs tWR from stop condition same as Byte Write and Page Write, During tWR, input
command is canceled.
・Refer to P8 about reply of ACK in each protect state.
www.rohm.com
© 2011 ROHM Co., Ltd. All rights reserved.
11/19
2011.11 - Rev.A
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
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