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PDF BR25G1M-3 Data sheet ( Hoja de datos )
| Número de pieza | BR25G1M-3 | |
| Descripción | SPI BUS EEPROM | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
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Datasheet
Serial EEPROM Series Standard EEPROM
SPI BUS EEPROM
BR25G1M-3
General Description
BR25G1M-3 is a 1Mbit Serial EEPROM of SPI BUS Interface.
Features
High Speed Clock Action up to 10MHz (Max)
Wait Function by HOLDB Terminal
Part or Whole of Memory Arrays Settable as
Read only Memory Area by Program
1.8V to 5.5V Single Power Source Operation Most
Suitable for Battery Use.
Up to 256 Bytes in Page Write Mode.
For SPI Bus Interface (CPOL, CPHA) = (0, 0), (1, 1)
Self-timed Programming Cycle
Low Current Consumption
¾ At Write Action (5V)
: 0.7mA (Typ)
¾ At Read Action (5V)
: 2.4mA (Typ)
¾ At Standby Action (5V) : 0.1µA (Typ)
Address Auto Increment Function at Read Action
Prevention of Write Mistake
¾ Write Prohibition at Power On
¾ Write Prohibition by Command Code (WRDI)
¾ Write Prohibition by WPB Pin
¾ Write Prohibition Block Setting by Status Registers
(BP1, BP0)
¾ Prevention of Write Mistake at Low Voltage
More than 100 years Data Retention.
More than 1 Million Write Cycles.
Bit Format 128K×8
Initial Delivery Data
Memory Array: FFh
Status Register: WPEN, BP1, BP0 : 0
Packages W(Typ) x D(Typ) x H(Max)
SOP8
5.00mm x 6.20mm x 1.71mm
SOP- J8
4.90mm x 6.00mm x 1.65mm
Figure 1.
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
©2014 ROHM Co., Ltd. All rights reserved.
TSZ22111･14･001
○This product is not designed protection against radioactive rays
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TSZ02201-0R2R0G100690-1-2
06.Oct.2014 Rev.002
1 page  
BR25G1M-3
Block Diagram
CSB 1
SO 2
WPB 3
GND 4
Datasheet
INSTRUCTION DECODE
CONTROL CLOCK
GENERATION
VOLTAGE
DETECTION
WRITE
INHIBITION
HIGH VOLTAGE
GENERATOR
INSTRUCTION
REGISTER
ADDRESS
REGISTER
DATA
REGISTER
STATUS REGISTER
ADDRESS
17bit
DECODER
17bit
READ/WRITE
8bit 8bit
AMP
1M
EEPROM
8 Vcc
7 HOLDB
6 SCK
5 SI
Pin Configuration
Figure 3. Block Diagram
(TOP VIEW)
Vcc HOLDB SCK
SI
Pin Descriptions
Terminal
name
Vcc
GND
CSB
SCK
SI
SO
Input
/Output
-
-
Input
Input
Input
Output
HOLDB Input
WPB
Input
CSB SO WPB GND
Figure 4. Pin Configuration
Function
Power source to be connected
All input / output reference voltage, 0V
Chip select input
Serial clock input
Ope code, address, and serial data input
Serial data output
Hold input
Command communications may be suspended
temporarily (HOLD status)
Write protect input
Write status register command is prohibited
www.rohm.com
©2014 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
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TSZ02201-0R2R0G100690-1-2
06.Oct.2014 Rev.002
5 Page 
BR25G1M-3
Typical Performance Curves‐Continued
Datasheet
80
SPEC
Ta=-40°C
60 Ta= 25°C
Ta= 85°C
40
SPEC
20
SPEC
0
0 12 3 45
Vcc [V]
Figure 25. CSB Hold Time vs Supply Voltage
6
30
SPEC
20 Ta=-40°C
Ta= 25°C
Ta= 85°C
SPEC
10
SPEC
0
-10
01 234 5
Vcc [V]
Figure 26. SI Setup Time vs Supply Voltage
6
25
Ta=-40°C
Ta= 25°C
20
SPEC
Ta= 85°C
15
SPEC
10
SPEC
5
0
012345
Vcc [V]
Figure 27. SI Hold Time vs Supply Voltage
6
140
120
100
SPEC
Ta=-40°C
Ta= 25°C
Ta= 85°C
80
SPEC
60
SPEC
40
20
0
0 12 34 56
Vcc [V]
Figure 28. Data Output Delay Time vs Supply Voltage
www.rohm.com
©2014 ROHM Co., Ltd. All rights reserved.
TSZ22111･15･001
11/29
TSZ02201-0R2R0G100690-1-2
06.Oct.2014 Rev.002
11 Page | ||
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