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24LCS22A-ISNG PDF预览

24LCS22A-ISNG

更新时间: 2024-11-21 12:52:43
品牌 Logo 应用领域
美国微芯 - MICROCHIP /
页数 文件大小 规格书
26页 365K
描述
Single Supply with Operation Down to 2.5V

24LCS22A-ISNG 数据手册

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24LCS22A  
2K VESA® E-EDIDSerial EEPROM  
Features:  
Package Types  
PDIP/SOIC  
• Single Supply with Operation Down to 2.5V  
• Supports Enhanced EDID(E-EDID) 1.3  
• Completely Implements DDC1/DDC2Inter-  
face for Monitor Identification, including Recovery  
to DDC1  
*NC  
*NC  
1
2
8
7
VCC  
VCLK  
• 2 Kbit Serial EEPROM Low-Power CMOS  
Technology:  
WP  
VSS  
3
4
6
5
SCL  
SDA  
- 1 mA active current, typical  
- 10 μA standby current, typical at 5.5V  
• 2-Wire Serial Interface Bus, I2CCompatible  
• 100 kHz (2.5V) and 400 kHz (5V) Compatibility  
• Self-Timed Write Cycle (including Auto-Erase)  
• Hardware Write-Protect Pin  
* Pins labeled ‘NC’ have no internal connection  
• Page Write Buffer for up to Eight Bytes  
• 1,000,000 Erase Write Cycles  
Block Diagram  
• Data Retention >200 years  
WP  
• ESD Protection >4000V  
HV Generator  
• 8-pin PDIP and SOIC Packages  
• Available Temperature Ranges:  
I/O  
Control  
Logic  
Memory  
Control  
Logic  
- Industrial (I)  
-40°C to +85°C  
EEPROM  
Array  
XDEC  
• Pb-Free and RoHS Compliant  
Page Latches  
Description:  
SDA  
SCL  
The Microchip Technology Inc. 24LCS22A is a 256 x 8-bit  
dual-mode Electrically Erasable PROM (EEPROM). This  
device is designed for use in applications requiring  
storage and serial transmission of configuration and  
control information. Two modes of operation have been  
implemented: Transmit-Only mode (1 Kbit) and  
Bidirectional mode (2 Kbit). 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 entire 2K memory array using SCL. If no  
control byte is received, the device will revert to the Trans-  
mit-Only mode after it receives 128 consecutive VCLK  
pulses while the SCL pin is idle. The 24LCS22A is avail-  
able in standard 8-pin PDIP and SOIC packages. The  
24LCS22A features a flexible write-protect pin which is  
enabled by writing to address 7Fh (usually the checksum  
in VESA® applications.  
YDEC  
VCLK  
Sense Amp.  
R/W Control  
Vcc  
Vss  
© 2008 Microchip Technology Inc.  
DS21682D-page 1  

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