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25AA256XIP PDF预览

25AA256XIP

更新时间: 2024-11-24 12:31:47
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
页数 文件大小 规格书
26页 509K
描述
256K SPI Bus Serial EEPROM

25AA256XIP 数据手册

 浏览型号25AA256XIP的Datasheet PDF文件第2页浏览型号25AA256XIP的Datasheet PDF文件第3页浏览型号25AA256XIP的Datasheet PDF文件第4页浏览型号25AA256XIP的Datasheet PDF文件第5页浏览型号25AA256XIP的Datasheet PDF文件第6页浏览型号25AA256XIP的Datasheet PDF文件第7页 
25AA256/25LC256  
256K SPI Bus Serial EEPROM  
Device Selection Table  
Part Number  
VCC Range  
Page Size  
Temp. Ranges  
Packages  
25LC256  
25AA256  
2.5-5.5V  
1.8-5.5V  
64 Byte  
64 Byte  
I, E  
I
P, SN, SM, ST, MF  
P, SN, SM, ST, MF  
Features:  
Description:  
• Max. Clock 10 MHz  
The Microchip Technology Inc. 25AA256/25LC256  
(25XX256*) are 256 Kbit Serial Electrically Erasable  
PROMs. The memory is accessed via a simple Serial  
Peripheral Interface (SPI) compatible serial bus. The  
bus signals required are a clock input (SCK) plus sep-  
arate data in (SI) and data out (SO) lines. Access to the  
device is controlled through a Chip Select (CS) input.  
• Low-Power CMOS Technology:  
- Max. Write Current: 5 mA at 5.5V, 10 MHz  
- Read Current: 6 mA at 5.5V, 10 MHz  
- Standby Current: 1 μA at 5.5V  
• 32,768 x 8-bit Organization  
• 64-Byte Page  
Communication to the device can be paused via the  
hold pin (HOLD). While the device is paused,  
transitions on its inputs will be ignored, with the  
exception of Chip Select, allowing the host to service  
higher priority interrupts.  
• Self-Timed Erase and Write Cycles (5 ms max.)  
• Block Write Protection:  
- Protect none, 1/4, 1/2 or all of array  
• Built-In Write Protection:  
The 25XX256 is available in standard packages  
including 8-lead PDIP and SOIC, and advanced  
packaging including 8-lead DFN and 8-lead TSSOP.  
- Power-on/off data protection circuitry  
- Write enable latch  
- Write-protect pin  
• Sequential Read  
Package Types (not to scale)  
• High Reliability:  
DFN  
PDIP/SOIC  
(P, SN, SM)  
(MF)  
- Endurance: 1,000,000 erase/write cycles  
- Data retention: > 200 years  
- ESD protection: > 4000V  
1
2
3
4
CS  
SO  
8
7
6
5
VCC  
HOLD  
SCK  
SI  
CS  
SO  
WP  
VCC  
1
2
3
4
8
7
6
5
HOLD  
SCK  
SI  
Temperature Ranges Supported:  
- Industrial (I):  
- Automotive (E):  
WP  
VSS  
-40°C to +85°C  
VSS  
-40°C to +125°C  
• Pb-Free and RoHS Compliant  
Rotated TSSOP  
(ST)  
Pin Function Table  
8
1
2
3
4
SCK  
SI  
HOLD  
Name  
Function  
7
VCC  
CS  
SO  
Chip Select Input  
Serial Data Output  
Write-Protect  
CS  
SO  
6
5
VSS  
WP  
WP  
TSSOP  
(ST)  
VSS  
SI  
Ground  
Serial Data Input  
Serial Clock Input  
Hold Input  
8
7
1
2
3
4
V
CC  
CS  
SO  
WP  
SCK  
HOLD  
VCC  
HOLD  
6
5
SCK  
SI  
Supply Voltage  
VSS  
* 25XX256 is used in this document as a generic part number for the 25AA256, 25LC256 devices.  
© 2007 Microchip Technology Inc.  
DS21822F-page 1  

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