BR24E08F 查看數據表（PDF） - ROHM Semiconductor

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BR24E08F

I2C BUS compatible serial EEPROM

ROHM Semiconductor 

Memory Ics

BR24C08 / BR24C08F / BR24C08FJ / BR24C08FV / BR24C16/ BR24C16F /

BR24C16FJ / BR24C16FV / BR24E16 / BR24E16F / BR24E16FJ / BR24E16FV

(4) Device addressing

BR24C08 / F / FJ / FV

1) Make sure the slave address is output from the master in continuation with the start condition.

2) The upper 4bits of the slave address are used to determine the device type. The device code for this IC is fixed at

“1010”.

3) The next 1bit of the slave address (A2 … device address) are used to select the device. This IC can address up to

two devices on the same bus.

4) The next 2bits (P1, P0 … page select) are used by the master to select four 256 word page of memory.

P1, P0 set to ‘0’ ‘0’ $ $ $ $ $ $ $ 1 page (000 ~0FF)

P1, P0 set to ‘0’ ‘1’ $ $ $ $ $ $ $ 2 page (100 ~1FF)

P1, P0 set to ‘1’ ‘0’ $ $ $ $ $ $ $ 3 page (200 ~2FF)

P1, P0 set to ‘1’ ‘1’ $ $ $ $ $ $ $ 4 page (300 ~3FF)

5) The lowermost bit of the slave address (R / W … READ / WRITE) is used to set the write or read mode as follows.

R / W set to 0 … Write

(Random read word address setting is also 0)

R / W set to 1 … Read

1010

A2

P1

P0

R/W

BR24C16 / F / FJ / FV

1) Make sure the slave address is output from the master in continuation with the start condition.

2) The upper 4bits of the slave address are used to determine the device type. The device code for this IC is fixed at

“1010”.

3) The next 3bits (P2, P1, P0 … page select) are used by the master to select four 256 word page of memory.

P2, P1, P0 set to ‘0’ ‘0’ ‘0’$ $ $ $ $ $ $ 1 page (000 ~0FF)

P2, P1, P0 set to ‘0’ ‘0’ ‘1’$ $ $ $ $ $ $ 2 page (100 ~1FF)

:

:

P2, P1, P0 set to ‘1’ ‘1’ ‘1’$ $ $ $ $ $ $ 8 page (700 ~7FF)

4) The lowermost bit of the slave address (R / W … READ / WRITE) is used to set the write or read mode as follows.

R / W set to 0 … Write

(Random read word address setting is also 0)

R / W set to 1 … Read

1010

P2

P1

P0

R/W

BR24E16 / F / FJ / FV

1) Make sure the slave address is output from the master in continuation with the start condition.

2) The upper 4bits of the slave address are used to determine the device type. The device code for this IC is fixed at

“1010”.

3) The next 3bits of the slave address (A2, A1, A0 … device address) are used to select the device. This IC can

address up to eight devices on the same bus.

4) The lowermost bit of the slave address (R / W … READ / WRITE) is used to set the write or read mode as follows.

R / W set to 0 … Write

(Random read word address setting is also 0)

R / W set to 1 … Read

1010

A2

A1

A0

R/W

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