Datasheet > 24LC04B-/P

24LC04B-/P

更新时间： 2024-01-27 20:47:25

品牌	Logo	应用领域
其他 - ETC		可编程只读存储器电动程控只读存储器电可擦编程只读存储器
页数	文件大小	规格书
12页	163K
描述
I2C Serial EEPROM

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技术参数
数据手册

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24LC04B-/P 技术参数

是否Rohs认证：	不符合	生命周期：	Active
Reach Compliance Code：	unknown	风险等级：	5.53
数据保留时间-最小值：	100	耐久性：	100000 Write/Erase Cycles
I2C控制字节：	1010DDMR	JESD-30 代码：	R-PDSO-G14
JESD-609代码：	e0	内存密度：	4096 bit
内存集成电路类型：	EEPROM	内存宽度：	8
端子数量：	14	字数：	512 words
字数代码：	512	最高工作温度：	85 °C
最低工作温度：	-40 °C	组织：	512X8
封装主体材料：	PLASTIC/EPOXY	封装代码：	SOP
封装等效代码：	SOP14,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	并行/串行：	SERIAL
电源：	3/5 V	认证状态：	Not Qualified
串行总线类型：	I2C	最大待机电流：	0.00003 A
子类别：	EEPROMs	最大压摆率：	0.003 mA
表面贴装：	YES	技术：	CMOS
温度等级：	INDUSTRIAL	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	写保护：	HARDWARE
Base Number Matches：	1

24LC04B-/P 数据手册

24LC04B/08B

3.6

Device Addressing

FIGURE 3-2: CONTROL BYTE

ALLOCATION

A control byte is the ﬁrst byte received following the

start condition from the master device. The control byte

consists of a 4-bit control code, for the 24LC04B/08B

this is set as 1010 binary for read and write operations.

The next three bits of the control byte are the block

select bits (B2, B1, B0). B2 is a don't care for both the

24LC04B and 24LC08B; B1 is a don't care for the

24LC04B. They are used by the master device to

select which of the two or four 256 word blocks of mem-

ory are to be accessed. These bits are in effect the

most signiﬁcant bits of the word address.

START

READ/WRITE

SLAVE ADDRESS

R/W A

X = Don’t care. B1 is don’t care for 24LC04B.

The last bit of the control byte deﬁnes the operation to

be performed. When set to one a read operation is

selected, when set to zero a write operation is selected.

Following the start condition, the 24LC04B/08B moni-

tors the SDA bus checking the device type identiﬁer

being transmitted, upon a 1010 code the slave device

outputs an acknowledge signal on the SDA line.

Depending on the state of the R/W bit, the 24LC04B/

08B will select a read or write operation.

Control

Code

Operation

Block Select

R/W

Read

Write

1010

Block Address

1999 Microchip Technology Inc.

DS21051G-page 5

1 2 3 456 7 8...12

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