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參數(shù)資料
| 型號： | 25LC256 |
| 廠商： | Microchip Technology Inc. |
| 元件分類： | EEPROM |
| 英文描述： | 256K SPI Bus Serial EEPROM |
| 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： | 25LC256 |
2003 Microchip Technology Inc.
Preliminary
DS21822C-page 1
25AA256/25LC256
256K SPI
Bus Serial EEPROM
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
μ
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;
- Industrial (I):
- Automotive (E):
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
V
CC
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, ST, MF
P, SN, ST, MF
-40
°
C to
-40°C to +125°C
+85
°
C
Name
Function
CS
SO
WP
V
SS
SI
SCK
HOLD
V
CC
Chip Select Input
Serial Data Output
Write-Protect
Ground
Serial Data Input
Serial Clock Input
Hold Input
Supply Voltage
2
CS
SO
WP
V
SS
1
2
3
4
8
7
6
5
V
CC
HOLD
SCK
SI
PDIP/SOIC
(P, SN)
TSSOP
(ST)
CS
SO
WP
V
SS
1
2
3
4
8
7
6
5
V
HOLD
SCK
SI
DFN
(MF)
CS
SO
WP
V
SS
HOLD
SCK
SI
2
5
6
7
8
4
3
2
1
V
CC
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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| 25LC256T-IMFG | 256K SPI Bus Serial EEPROM |
| 25LC256-ESNG | 256K SPI Bus Serial EEPROM |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 25LC256-E/MF | 功能描述:電可擦除可編程只讀存儲器 32kx8 - 2.5V RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| 25LC256-E/P | 功能描述:電可擦除可編程只讀存儲器 32kx8 - 2.5V RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| 25LC256-E/SM | 功能描述:電可擦除可編程只讀存儲器 32Kx8 2.5V RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| 25LC256-E/SN | 功能描述:電可擦除可編程只讀存儲器 32kx8 - 2.5V RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
| 25LC256-E/ST | 功能描述:電可擦除可編程只讀存儲器 32kx8 - 2.5V RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數(shù)據(jù)保留:100 yr 最大時鐘頻率:1000 KHz 最大工作電流:6 uA 工作電源電壓:1.7 V to 5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 |
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