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24LC41A

更新时间： 2024-01-09 09:25:50

品牌	Logo	应用领域
美国微芯 - MICROCHIP		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
18页	234K
描述
1K/4K 2.5V Dual Mode, Dual Port I2C⑩ Serial EEPROM

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24LC41A 技术参数

生命周期：	Obsolete	零件包装代码：	DIP
包装说明：	DIP, DIP8,.3	针数：	8
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.32.00.51	风险等级：	5.84
Is Samacsys：	N	其他特性：	ALSO CONTAINS 128 X 8 BIT MEMORY BLOCK
最大时钟频率 (fCLK)：	0.4 MHz	数据保留时间-最小值：	40
耐久性：	10000000 Write/Erase Cycles	I2C控制字节：	1010XXMR/1010XXXR
JESD-30 代码：	R-PDIP-T8	长度：	9.46 mm
内存密度：	4096 bit	内存集成电路类型：	EEPROM
内存宽度：	8	功能数量：	1
端口数量：	2	端子数量：	8
字数：	512 words	字数代码：	512
工作模式：	SYNCHRONOUS	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：	DIP
封装等效代码：	DIP8,.3	封装形状：	RECTANGULAR
封装形式：	IN-LINE	并行/串行：	SERIAL
电源：	3/5 V	认证状态：	Not Qualified
座面最大高度：	4.32 mm	串行总线类型：	I2C
最大待机电流：	0.00006 A	子类别：	EEPROMs
最大压摆率：	0.003 mA	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	2.5 V	标称供电电压 (Vsup)：	3 V
表面贴装：	NO	技术：	CMOS
温度等级：	INDUSTRIAL	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
宽度：	7.62 mm	最长写入周期时间 (tWC)：	10 ms
写保护：	HARDWARE	Base Number Matches：	1

24LC41A 数据手册

24LC41A

4.2

Page Write

4.0

WRITE OPERATION

The write control byte, word address, and the first data

byte are transmitted to the port in the same way as in a

byte write. But, instead of generating a Stop condition,

the master transmits up to eight data bytes to the DDC

Monitor Port or 16 bytes to the Microcontroller Access

Port, which are temporarily stored in the on-chip page

buffer and will be written into the memory after the

master has transmitted a Stop condition. After the

receipt of each word, the three lower order address

pointer bits are internally incremented by one. The

higher order 5-bits of the word address remains

constant. If the master should transmit more than eight

words to the DDC Monitor Port or 16 words to the

Microcontroller Access Port prior to generating the Stop

condition, the address counter will roll over and the

previously received data will be overwritten. As with the

byte write operation, once the Stop condition is received

an internal write cycle will begin (see Figure 4-2).

Write operations are identical for the DDC Monitor Port

(when in Bidirectional mode) and the Microcontroller

Access Port, with the exception of the VCLK and MWP

pins noted in the next sections. Data can be written

using either a Byte Write or Page Write command. Write

commands for the DDC Monitor Port and the

Microcontroller

Access

Port

are

completely

independent of one another.

4.1

Byte Write

Following the Start signal from the master, the slave

address (4-bits), the chip select bits (3-bits) and the

R/W bit which is a logic low is placed onto the bus by

the master transmitter. This indicates to the addressed

slave receiver that a byte with a word address will

follow after it has generated an Acknowledge bit during

the ninth clock cycle. Therefore, the next byte transmit-

ted by the master is the word address and will be

written into the address pointer of the port. After

receiving another Acknowledge signal from the port,

the master device will transmit the data word to be

written into the addressed memory location. The port

acknowledges again and the master generates a Stop

condition. This initiates the internal write cycle, and

during this time, the port will not generate Acknowledge

signals (see Figure 4-1).

For the DDC Monitor Port, it is required that VCLK be

held at a logic high level in order to program the device.

This applies to byte write and page write operation.

Note that VCLK can go low while the device is in its

self-timed program operation and not affect program-

ming. For the DDC Monitor Port, the MWP pin must be

held high for the duration of the write cycle.

For the DDC Monitor Port it is required that VCLK be

held at a logic high level in order to program the device.

This applies to byte write and page write operation.

Note that VCLK can go low while the device is in its

self-timed program operation and not affect program-

ming. The MWP pin must be held high for the duration

of the write protection.

Note:

Page write operations are limited to writing

bytes within a single physical page,

regardless of the number of bytes actually

being written. Physical page boundaries

Start at addresses that are integer

multiples of the page buffer size (or ‘page

size’) and end at addresses that are

integer multiples of [page size - 1]. If a

Page Write command attempts to write

across a physical page boundary, the

result is that the data wraps around to the

beginning of the current page (overwriting

data previously stored there), instead of

being written to the next page as might be

expected. It is therefore necessary for the

application software to prevent page write

operations that would attempt to cross a

page boundary.

 2003 Microchip Technology Inc.

DS21176D-page 9

1...6 7 8910 11 12...18

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与24LC41A相关器件

型号	品牌	描述	获取价格	数据表
24LC41A/P	MICROCHIP	512 X 8 I2C/2-WIRE SERIAL EEPROM, PDIP8, 0.300 INCH, PLASTIC, DIP-8	获取价格
24LC41A-/P	MICROCHIP	1K/4K 2.5V Dual Mode, Dual Port I2C⑩ Serial E	获取价格
24LC41A-I/P	MICROCHIP	1K/4K 2.5V Dual Mode, Dual Port I2C⑩ Serial E	获取价格
24LC41I/P	MICROCHIP	512 X 8 I2C/2-WIRE SERIAL EEPROM, PDIP8, 0.300 INCH, PLASTIC, DIP-8	获取价格
24LC41-I/P	ETC	I2C Serial EEPROM	获取价格
24LC41IP	MICROCHIP	1K/4K 2.5V Dual Mode, Dual Port I2C⑩ Serial E	获取价格

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