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24LC128 PDF预览

24LC128

更新时间: 2024-02-25 14:53:36
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
12页 181K
描述
128K I 2 C ⑩ CMOS Serial EEPROM

24LC128 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Active零件包装代码:SOIC
包装说明:ROHS COMPLIANT, PLASTIC, TSSOP-8针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.32.00.51风险等级:5.22
其他特性:1000000 ERASE/WRITE CYCLES, HARDWARE WRITE PROTECT, DATA RETENTION > 200 YEARS最大时钟频率 (fCLK):0.4 MHz
数据保留时间-最小值:200耐久性:1000000 Write/Erase Cycles
I2C控制字节:1010DDDRJESD-30 代码:R-PDSO-G8
JESD-609代码:e3长度:4.4 mm
内存密度:131072 bit内存集成电路类型:EEPROM
内存宽度:8湿度敏感等级:1
功能数量:1端子数量:8
字数:16384 words字数代码:16000
工作模式:SYNCHRONOUS最高工作温度:85 °C
最低工作温度:-40 °C组织:16KX8
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP8,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH并行/串行:SERIAL
峰值回流温度(摄氏度):260电源:3/5 V
认证状态:Not Qualified座面最大高度:1.2 mm
串行总线类型:I2C最大待机电流:0.000001 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):4.5 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:40宽度:3 mm
最长写入周期时间 (tWC):5 ms写保护:HARDWARE
Base Number Matches:1

24LC128 数据手册

 浏览型号24LC128的Datasheet PDF文件第3页浏览型号24LC128的Datasheet PDF文件第4页浏览型号24LC128的Datasheet PDF文件第5页浏览型号24LC128的Datasheet PDF文件第7页浏览型号24LC128的Datasheet PDF文件第8页浏览型号24LC128的Datasheet PDF文件第9页 
24AA128/24LC128  
FIGURE 5-1: CONTROL BYTE FORMAT  
5.0  
DEVICE ADDRESSING  
A control byte is the first byte received following the  
start condition from the master device (Figure 5-1).The  
control byte consists of a 4-bit control code; for the  
24xx128 this is set as 1010 binary for read and write  
operations. The next three bits of the control byte are  
the chip select bits (A2, A1, A0). The chip select bits  
allow the use of up to eight 24xx128 devices on the  
same bus and are used to select which device is  
accessed. The chip select bits in the control byte must  
correspond to the logic levels on the corresponding A2,  
A1, and A0 pins for the device to respond. These bits  
are in effect the three most significant bits of the word  
address.  
Read/Write Bit  
Chip Select  
Control Code  
Bits  
S
1
0
1
0
A2 A1 A0 R/W ACK  
Slave Address  
Acknowledge Bit  
Start Bit  
5.1  
Contiguous Addressing Across  
Multiple Devices  
The last bit of the control byte defines the operation to  
be performed. When set to a one a read operation is  
selected, and when set to a zero a write operation is  
selected. The next two bytes received define the  
address of the first data byte (Figure 5-2). Because  
only A13…A0 are used, the upper two address bits are  
don’t care bits. The upper address bits are transferred  
first, followed by the less significant bits.  
The chip select bits A2, A1, A0 can be used to expand  
the contiguous address space for up to 1 Mbit by add-  
ing up to eight 24xx128's on the same bus. In this case,  
software can use A0 of the control byte as address bit  
A14; A1, as address bit A15; and A2, as address bit  
A16. It is not possible to sequentially read across  
device boundaries.  
Following the start condition, the 24xx128 monitors the  
SDA bus checking the device type identifier being  
transmitted. Upon receiving a 1010 code and appropri-  
ate device select bits, the slave device outputs an  
acknowledge signal on the SDA line. Depending on the  
state of the R/W bit, the 24xx128 will select a read or  
write operation.  
FIGURE 5-2: ADDRESS SEQUENCE BIT ASSIGNMENTS  
CONTROL BYTE  
ADDRESS HIGH BYTE  
ADDRESS LOW BYTE  
A
A
13  
A
2
A
1
A
0
A
A
10  
A
9
A
8
A
7
A
0
1
0
1
0
R/W  
X
X
12 11  
CONTROL  
CODE  
CHIP  
SELECT  
BITS  
X = Don’t Care Bit  
DS21191B-page 6  
1998 Microchip Technology Inc.  
 
 

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