参数资料
型号: BR24T256F-WE2
厂商: Rohm Semiconductor
文件页数: 4/22页
文件大小: 0K
描述: IC EEPROM I2C 256K 400KHZ 8-SOP
标准包装: 1
格式 - 存储器: EEPROMs - 串行
存储器类型: EEPROM
存储容量: 256K (32K x 8)
速度: 400kHz
接口: I²C,2 线串口
电源电压: 1.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.173",4.40mm 宽)
供应商设备封装: 8-SOP
包装: 标准包装
其它名称: BR24T256F-WE2DKR
BR24T □□□□ Series
● Block diagram
*2
Technical Note
A0
1
*1
1Kbit ~ 1024Kbit EEPROM array
8bit
8
Vcc
A0
1
BR24T01-W
BR24T02-W
BR24T04-W
8
Vcc
*2
A1
2
Address
decoder
*1 7bit 13bit
8bit 14bit
9bit 15bit
10bit 16bit
11bit 17bit
Word
address register
Data
register
7
WP
A1
2
BR24T08-W
BR24T16-W
BR24T32-W
7
WP
12bit
A2
3
BR24T64-W
6
SCL
BR24T128-W
*2
A2
3
START
Control circuit
STOP
6
SCL
GND
4
BR24T256-W
BR24T512-W
5
SDA
ACK
BR24T1M-W
GND
4
High voltage
generating circuit
Power source
voltage detection
5
SDA
1
*
7bit: BR24T01-W
8bit: BR24T02-W
9bit: BR24T04-W
12bit: BR24T32-W
13bit: BR24T64-W
14bit: BR24T128-W
*2
A0= Don't use : BR24T04-W, BR24T1M-W
A0, A1=Don't use: BR24T08-W
A0, A1, A2=Don't use: BR24T16-W
10bit: BR24T08-W
11bit: BR24T16-W
15bit: BR24T256-W
16bit: BR24T512-W
17bit: BR24T1M-W
Fig.2 Block diagram
● Pin assignment and description
Terminal
Name
Input/
Output
BR24T01-W
BR24T02-W
BR24T04-W
BR24T08-W
BR24T16-W
BR24T32/64/
128/256/512-W
BR24T1M-W
A0
Input
Slave address setting
Don’t use*
Slave address
setting
Don’t use*
A1
A2
Input
Input
Slave address setting
Slave address setting
Don’t use*
Don’t use*
Slave address setting
Slave address setting
GND
SDA
SCL
WP
Vcc
Input/
output
Input
Input
Reference voltage of all input / output, 0V
Serial data input serial data output
Serial clock input
Write protect terminal
Connect the power source.
*Pins not used as device address may be set to any of ‘H’, 'L', and 'Hi-Z'.
● Characteristic data (The following values are Typ. ones.)
6
6
1
5
4
Ta=-40℃
Ta=25℃
Ta=85℃
5
4
Ta=-40℃
Ta=25℃
Ta=85℃
0.8
0.6
Ta=-40℃
Ta=25℃
Ta=85℃
3
3
2
1
0
SPEC
2
1
0
SPEC
0.4
0.2
0
SPEC
0
1
2 3 4 5
6
0
1
2
3
4
5
6
0
1
2 3 4 5
6
1
SUPPLY VOLTAGE : Vcc(V)
Fig.3   'H' input voltage V IH1
(A0,A1,A2,SCL,SDA,WP)
1.2
SUPPLY VOLTAGE : Vcc(V)
Fig.4   'L' input voltage V IL1
(A0,A1,A2,SCL,SDA,WP)
1.2
L OUTPUT CURRENT : I OL (mA)
Fig.5 'L' output voltage V OL1 -I OL (Vcc=1.7V)
0.8
Ta=-40℃
Ta=25℃
Ta=85℃
1
0.8
SPEC
1
0.8
SPEC
0.6
0.4
0.2
SPEC
0.6
0.4
0.2
Ta=-40℃
Ta=25℃
Ta=85℃
0.6
0.4
0.2
Ta=-40℃
Ta=25℃
Ta=85℃
0
0
1
2
3
4
5
6
0
0
1
2
3
4
5
6
0
0
1
2 3 4 5
6
L OUTPUT CURRENT : I OL (mA)
Fig.6   'L' output voltage V OL2 -I OL (Vcc=2.5V)
www.rohm.com
? 2011 ROHM Co., Ltd. All rights reserved.
SUPPLYVOLTAGE : Vcc(V)
Fig.7   Input leak current I LI
(A0,A1,A2,SCL,WP)
4/21
SUPPLY VOLTAGE : Vcc(V)
Fig.8   Output leak current I LO (SDA)
2011.03 - Rev.A
相关PDF资料
PDF描述
EP4CE10E22C9LN IC CYCLONE IV FPGA 10K 144EQFP
EP4CE10E22C8N IC CYCLONE IV FPGA 10K 144EQFP
EP4CE6F17I7N IC CYCLONE IV FPGA 6K 256FBGA
EP4CE6F17C6N IC CYCLONE IV FPGA 6K 256FBGA
A3P125-PQG208I IC FPGA 1KB FLASH 125K 208-PQFP
相关代理商/技术参数
参数描述
BR24T256FWGE2 制造商:ROHM 制造商全称:Rohm 功能描述:High Reliability Serial EEPROMs
BR24T256FWGTR 制造商:ROHM 制造商全称:Rohm 功能描述:High Reliability Serial EEPROMs
BR24T256NUXWGE2 制造商:ROHM 制造商全称:Rohm 功能描述:High Reliability Serial EEPROMs
BR24T256NUXWGTR 制造商:ROHM 制造商全称:Rohm 功能描述:High Reliability Serial EEPROMs
BR24T256-W 制造商:ROHM Semiconductor 功能描述: