BR25H010-W ROHM [Rohm], BR25H010-W Datasheet - Page 8

• Manufacturer Part Number: BR25H010-W
• Manufacturer: ROHM [Rohm]

2. Read command (READ)
3. Write command (WRITE)
By read command, data of EEPROM can be read. As for this command, set CSB LOW, then input address after read ope code.
EEPROM starts data output of the designated address. Data output is started from SCK fall of 15/23
sequentially. This IC has increment read function. After output of data for 1 byte (8bits), by continuing input of SCK, data of the
next address can be read. Increment read can read all the addresses of EEPROM. After reading data of the most significant
address, by continuing increment read, data of the most insignificant address is read.
CSB
SCK
CSB
SCK
By write command, data of EEPROM can be written. As for this command, set CSB LOW, then input address and data after
write ope code. Then, by making CSB HIGH, the EEPROM starts writing. The write time of EEPROM requires time of tE/W
(Max 5ms). During tE/W, other than status read command is not accepted. Start CSB after taking the last data (D0), and
before the next SCK clock starts. At other timing, write command is not executed, and this write command is cancelled. This
IC has page write function, and after input of data for 1 byte (8 bits), by continuing data input without starting CSB, data up to
16/32
internally at every time when data of 1 byte is input and data is written to respective addresses. When data of the maximum
bytes or higher is input, address rolls over, and previously input data is overwritten.
SO
SO
CSB
SCK
SI
SI
SO
CSB
SCK
SI
SO
SI
High-Z
High-Z
*1
High-Z
High-Z
bytes can be written for one tE/W. In page write, the insignificant 4/5
0
0
0
0
0
0
0
0
0
0
Fig.35 Read command (BR25H010/020/040-W)
Fig.36 Read command (BR25H080/160/320-W)
Fig.37 Write command (BR25H010/020/040-W)
Fig.38 Write command (BR25H080/160/320-W)
0
0
1
1
1
1
0
0
0
2
0
2
2
2
0
0
0
3
0
3
3
ж
3
1
0
*1
4
0
4
4
4
0
0
5
0
0
5
5
5
1
1
6
1
1
6
6
6
0
7
0
1
7
1
7
7
A7
8
ж
A7
ж
8
8
8
A6
ж
A6
ж
～ ～
～ ～
～ ～
～ ～
～ ～
9
A5
～ ～
～ ～
～ ～
～ ～
～ ～
ж
ж
A5
10
A4
A11
A11
A4
12
11
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
A1
～ ～
～ ～
～ ～
A1
A1
A1
A0
15
A0
A0
23
A0
23
15
D7
16
D7
D7
8/16
24
D7
24
D6
16
D6
D6
ж
D6
1 BR25H010/020-W=Don’t care
BR25H040-W=A8
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
～ ～
D2
ж
1 BR25H010/020-W=Don’t care
D2
D2
D2
BR25H040-W=A8
D1
ж
22
=Don’t Care
D1
D1
30
D1
30
D0
22
23
D0
D0
31
D0
ж
ж2
ж
=Don't care
ж
1 BR25H010/020/040-W=16 bytes at maximum
2 BR25H010/020/040-W=Insignificant 4 bits
bit of the designated address is incremented
BR25H080/160/320-W=Insignificant 5 bits
BR25H080/160/320-W=32 bytes at maximum
ж
1 BR25H010/020/040-W=15 clocks
BR25H080/160/320-W=23 clocks
BR25H010-W
BR25H020-W
BR25H040-W
BR25H080-W
BR25H160-W
BR25H320-W
BR25H010-W
BR25H020-W
BR25H040-W
BR25H080-W
BR25H160-W
BR25H320-W
Product
number
Product
number
Product
number
Product
number
ж1
clock, and from D7 to D0
Address
Address
Address
Address
A10-A0
A11-A0
A10-A0
A11-A0
length
A6-A0
A7-A0
A8-A0
length
A9-A0
length
A6-A0
A7-A0
A8-A0
length
A9-A0