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24AA174-/P

更新时间: 2024-11-24 03:00:31
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 169K
描述
16K 1.8V Cascadable I2C⑩ Serial EEPROM with OTP Security Page

24AA174-/P 数据手册

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Obsolete Device  
24AA174  
2 ™  
16K 1.8V Cascadable I C Serial EEPROM with OTP Security Page  
PACKAGE TYPES  
FEATURES  
PDIP  
A0  
A1  
1
2
8
7
VCC  
WP  
• Single supply with operation down to 1.8V  
• 16 bytes OTP Secure Memory  
• Low power CMOS technology  
- 1 mA active current typical  
A2  
3
4
6
5
SCL  
SDA  
- 10 µA standby current typical at 5.5V  
- 5 µA standby current typical at 3.0V  
• Organized as eight blocks of 256 bytes  
(8 x 256 x 8)  
VSS  
• 2-wire serial interface bus, I2C compatible  
• Functional address inputs for cascading up to 8  
devices  
8-lead  
SOIC  
1
2
8
7
• Schmitt trigger, filtered inputs for noise suppres-  
sion  
A0  
A1  
VCC  
• Output slope control to eliminate ground bounce  
• 100 kHz (1.8V) and 400 kHz (5V) compatibility  
• Self-timed write cycle (including auto-erase)  
• Page-write buffer for up to 16 bytes  
• 2 ms typical write cycle time for page-write  
• Hardware write protect for entire memory  
• Can be operated as a serial ROM  
• Factory programming (QTP) available  
• ESD protection > 4,000V  
WP  
3
4
6
5
A2  
SCL  
SDA  
VSS  
BLOCK DIAGRAM  
• 1,000,000 Erase/Write cycles guaranteed  
• Data retention > 200 years  
• 8 pin DIP, 8-lead SOIC packages  
• Available for commercial temperature range  
A0 A1  
A2  
WP  
HV GENERATOR  
- Commercial (C):  
0°C to +70°C  
DESCRIPTION  
I/O  
MEMORY  
CONTROL  
LOGIC  
EEPROM ARRAY  
(8 x 256 x 8)  
CONTROL  
LOGIC  
XDEC  
The Microchip Technology Inc. 24AA174 is a cascad-  
able 16K bit Electrically Erasable PROM. The device is  
organized as eight blocks of 256 x 8-bit memory with a  
2-wire serial interface and provides a specially  
addressed OTP (one-time programmable) 16 byte  
security block. Low voltage design permits operation  
down to 1.8 volts (end-of-life voltage for most popular  
battery technologies) with standby and active currents  
of only 5 µA and 1 mA respectively. The 24AA174 also  
has a page-write capability for up to 16 bytes of data.  
The 24AA174 is available in the standard 8-pin DIP and  
8-lead surface mount SOIC packages.  
PAGE LATCHES  
SDA  
SCL  
YDEC  
V
CC  
SS  
SENSE AMP  
R/W CONTROL  
V
The three select pins, A0, A1, and A2, function as chip  
select inputs and allow up to eight devices to share a  
common bus, for up to 128K bits total system  
EEPROM.  
I2C is a trademark of Philips Corporation.  
2004 Microchip Technology Inc.  
DS21102G-page 1  

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