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參數(shù)資料
| 型號： | 25AA256T-IST |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | SENSOR REFLECTIVE OBJECT |
| 中文描述： | 256K SPI總線串行EEPROM |
| 文件頁數(shù)： | 1/26頁 |
| 文件大小： | 367K |
| 代理商： | 25AA256T-IST |
2003 Microchip Technology Inc.
Preliminary
DS21822C-page 1
25AA256/25LC256
Device Selection Table
Features
Max. clock 10 MHz
Low-power CMOS technology
- Max. Write Current: 5 mA at 5.5V, 10 MHz
- Read Current: 5 mA at 5.5V, 10 MHz
- Standby Current: 1
A at 5.5V
32,768 x 8-bit organization
64 byte page
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
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
Sequential read
High reliability
- Endurance: 1,000,000 erase/write cycles
- Data retention: > 200 years
- ESD protection: > 4000V
Temperature ranges supported;
Standard and Pb-free packages available
Pin Function Table
Description
The Microchip Technology Inc. 25AA256/25LC256
(25XX256*) are 256k-bit 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
separate data in (SI) and data out (SO) lines. Access to
the device is controlled through a Chip Select (CS)
input.
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.
The 25XX256 is available in standard packages
including 8-lead PDIP and SOIC, and advanced
packaging including 8-lead DFN and 8-lead TSSOP.
Pb-free (Pure Sn) finish is also available.
Package Types (not to scale)
Part Number
VCC Range
Page Size
Temp. Ranges
Packages
25LC256
2.5-5.5V
64 Byte
I, E
P, SN, ST, MF
25AA256
1.8-5.5V
64 Byte
I
P, SN, ST, MF
- Industrial (I):
-40
°Cto +85°C
- Automotive (E):
-40°C to +125°C
Name
Function
CS
Chip Select Input
SO
Serial Data Output
WP
Write-Protect
VSS
Ground
SI
Serial Data Input
SCK
Serial Clock Input
HOLD
Hold Input
VCC
Supply Voltage
25L
C256
CS
SO
WP
VSS
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
PDIP/SOIC
(P, SN)
TSSOP
CS
SO
WP
VSS
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
(ST)
DFN
CS
SO
WP
VSS
HOLD
SCK
SI
25
LC
2
5
6
5
6
7
8
4
3
2
1
VCC
(MF)
256K SPI Bus Serial EEPROM
SPI is a registered trademark of Motorola Corporation.
* 25XX256 is used in this document as a generic part number for the 25AA256, 25LC256 devices.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 25AA256T-ISTG | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM |
| 25AA256XEMF | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM |
| 25AA256XEP | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM |
| 25AA256XESM | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM |
| 25AA256XESN | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:256K SPI Bus Serial EEPROM |
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