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24LC21A/PB27 PDF预览

24LC21A/PB27

更新时间: 2024-11-18 14:33:47
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时钟光电二极管内存集成电路
页数 文件大小 规格书
18页 250K
描述
128 X 8 I2C/2-WIRE SERIAL EEPROM, PDIP8, 0.300 INCH, PLASTIC, DIP-8

24LC21A/PB27 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:DIP
包装说明:0.300 INCH, PLASTIC, DIP-8针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.32.00.51风险等级:5.21
Is Samacsys:N最大时钟频率 (fCLK):0.4 MHz
JESD-30 代码:R-PDIP-T8JESD-609代码:e3
长度:9.46 mm内存密度:1024 bit
内存集成电路类型:EEPROM内存宽度:8
功能数量:1端子数量:8
字数:128 words字数代码:128
工作模式:SYNCHRONOUS最高工作温度:70 °C
最低工作温度:组织:128X8
输出特性:OPEN-DRAIN封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装形状:RECTANGULAR
封装形式:IN-LINE并行/串行:SERIAL
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
座面最大高度:4.32 mm串行总线类型:I2C
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:COMMERCIAL
端子面层:Matte Tin (Sn)端子形式:THROUGH-HOLE
端子节距:2.54 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:7.62 mm
最长写入周期时间 (tWC):10 msBase Number Matches:1

24LC21A/PB27 数据手册

 浏览型号24LC21A/PB27的Datasheet PDF文件第2页浏览型号24LC21A/PB27的Datasheet PDF文件第3页浏览型号24LC21A/PB27的Datasheet PDF文件第4页浏览型号24LC21A/PB27的Datasheet PDF文件第5页浏览型号24LC21A/PB27的Datasheet PDF文件第6页浏览型号24LC21A/PB27的Datasheet PDF文件第7页 
24LC21A  
1K 2.5V Dual Mode I2CSerial EEPROM  
Features  
Package Types  
• Single supply with operation down to 2.5V  
PDIP  
NC  
NC  
1
8
7
Vcc  
• Completely implements DDC1™/DDC2™  
interface for monitor identification, including  
recovery to DDC1  
2
3
4
VCLK  
• Pin and function compatible with 24LC21  
• Low-power CMOS technology  
NC  
6
5
SCL  
SDA  
- 1 mA typical active current  
VSS  
- 10 µA standby current typical at 5.5V  
• 2-wire serial interface bus, I2C™ compatible  
• 100 kHz (2.5V) and 400 kHz (5V) compatibility  
• Self-timed write cycle (including auto-erase)  
• Page write buffer for up to eight bytes  
SOIC  
1
2
3
4
8
7
6
5
NC  
Vcc  
NC  
NC  
VCLK  
1,000,000 erase/write cycles ensured  
• Data retention > 200 years  
SCL  
SDA  
• ESD Protection > 4000V  
• 8-pin PDIP and SOIC package  
• Available for extended temperature ranges  
Vss  
- Commercial (C):  
- Industrial (I):  
0°C to +70°C  
-40°C to +85°C  
Block Diagram  
Description  
HV Generator  
The Microchip Technology Inc. 24LC21A is a 128 x 8-bit  
dual-mode Electrically Erasable PROM. This device is  
designed for use in applications requiring storage and  
serial transmission of configuration and control informa-  
tion. Two modes of operation have been implemented:  
Transmit-only mode and Bidirectional mode. Upon  
power-up, the device will be in the Transmit-only mode,  
sending a serial bit stream of the memory array from 00h  
to 7Fh, clocked by the VCLK pin. A valid high-to-low  
transition on the SCL pin will cause the device to enter  
the transition mode, and look for a valid control byte on  
the I2C bus. If it detects a valid control byte from the  
master, it will switch into Bidirectional mode, with byte  
selectable read/write capability of the memory array  
using SCL. If no control byte is received, the device will  
revert to the Transmit-only mode after it receives 128  
consecutive VCLK pulses while the SCL pin is idle. The  
24LC21A is available in a standard 8-pin PDIP and  
SOIC package in both commercial and industrial  
temperature ranges.  
I/O  
Control  
Logic  
Memory  
Control  
Logic  
EEPROM  
Array  
XDEC  
Page Latches  
SCL  
SDA  
YDEC  
VCLK  
Sense AMP  
R/W Control  
VCC  
VSS  
Pin Function Table  
Name  
Function  
VSS  
SDA  
SCL  
VCLK  
VCC  
Ground  
Serial Address/Data I/O  
Serial Clock (Bidirectional mode)  
Serial Clock (Transmit-only mode)  
+2.5V to 5.5V Power Supply  
No Connection  
DDC is a trademark of the Video Electronics Standards  
Association.  
NC  
2
I C is a trademark of Philips Corporation.  
2003 Microchip Technology Inc.  
DS21160F-page 1  

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