BR24G04FJ-3A データシートの表示（PDF） - ROHM Semiconductor

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BR24G04FJ-3A

Serial EEPROM series Standard EEPROM I2C BUS EEPROM (2-Wire)

ROHM Semiconductor 

BR24G04-3A

○ Notes on write cycle continuous input

The maximum page numbers of BR24G04-3A are 16 bytes. Any bytes below these can be written.

1 page=16bytes, but the page write cycle time is 5ms at maximum for 16byte bulk write.

It does not stand 5ms at maximum × 16byte=80ms(Max.)

○ Internal address increment

Page write mode

WA7

WA4 WA3 WA2 WA1 WA0

0

00000

0

00001

0

00010

Increment

0Eh

0

0

0

01110

01111

00000

For example, when it is started from address 0Eh,

therefore, increment is made as below,

0Eh→0Fh→00h→01h･･･ which please note.

Significant bit is fixed.

No digit up

※0Eh･･･0E in hexadecimal, therefore, 00001110 becomes a

binary number.

○ Write protect (WP) terminal

・Write protect (WP) function

When WP terminal is set Vcc (H level), data rewrite of all addresses is prohibited. When it is set GND (L level), data

rewrite of all address is enabled. Be sure to connect this terminal to Vcc or GND, or control it to H level or L level. Do not

use it open.

In the case of use it as an ROM, it is recommended to connect it to pull up or Vcc.

At extremely low voltage at power ON / OFF, by setting the WP terminal 'H', mistake write can be prevented.

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11.Jun.2019 Rev.004

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