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參數資料
| 型號： | 25AA640 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 64K 1.8V SPI Bus Serial EEPROM(1.8~5.5V,1MHz,64K位,10M擦寫周期,EEPROM) |
| 中文描述： | 64K的1.8 SPI總線串行EEPROM（1.8?5.5V之間，1MHz的，64K的位，1000萬擦寫周期和EEPROM） |
| 文件頁數： | 1/12頁 |
| 文件大小： | 196K |
| 代理商： | 25AA640 |
1997 Microchip Technology Inc.
Preliminary
DS21223A-page 1
M
25AA640/25LC640/25C640
DEVICE SELECTION TABLE
FEATURES
Low power CMOS technology
- Write current: 3 mA typical
- Read current: 500
- Standby current: 500 nA typical
8192 x 8 bit organization
32 byte page
Write cycle time: 5ms max.
Self-timed ERASE and WRITE cycles
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: 1M cycles (guaranteed)
- Data retention: > 200 years
- ESD protection: > 4000 V
8-pin PDIP, SOIC, and TSSOP packages
Temperature ranges supported:
- Commercial: (C)
- Industrial: (I)
- Automotive: (E) (25C640)
μ
A typical
DESCRIPTION
The Microchip Technology Inc. 25AA640/25LC640/
25C640 (25xx640
) is a 64K bit serial Electrically Eras-
able PROM. 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, transi-
tions on its inputs will be ignored, with the exception of
chip select, allowing the host to service higher priority
interrupts.
*
PACKAGE TYPES
BLOCK DIAGRAM
Part
Number
25AA640
25LC640
25C640
V
CC
Range
1.8-5.5V
2.5-5.5V
4.5-5.5V
Max Clock
Frequency
1 MHz
2 MHz
3 MHz
Temp
Ranges
C,I
C,I
C,I,E
0
°
°
°
C to
C to
C to +125
+70
+85
°
°
°
C
C
C
-40
-40
2
TSSOP
1
2
3
4
8
7
6
5
SCK
SI
V
SS
WP
HOLD
V
CC
CS
SO
2
PDIP/SOIC
1
2
3
4
8
7
6
5
V
CC
HOLD
SCK
SI
CS
SO
WP
V
SS
SI
SO
SCK
CS
HOLD
WP
Status
Register
I/O Control
Logic
Memory
Control
Logic
X
Dec
HV Generator
EEPROM
Array
Page Latches
Y Decoder
Sense Amp.
R/W Control
V
CC
V
SS
64K SPI
Bus Serial EEPROM
*25xx640 is used in this document as a generic part number for the 25AA640/25LC640/25C640 devices.
SPI is a trademark of Motorola.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 25AA640/25LC640 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:25AA640/25LC640 |
| 25AA640/S | 功能描述:電可擦除可編程只讀存儲器 64k, 8K X 8 , 1.8V SER EE, DIE in WAFFLE PK RoHS:否 制造商:Atmel 存儲容量:2 Kbit 組織:256 B x 8 數據保留: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 |
| 25AA640/W | 制造商:Microchip Technology Inc 功能描述:64K, 8K X 8 , 1.8V SER EE, WAFER - Gel-pak, waffle pack, wafer, diced wafer on film |
| 25AA640/WF | 制造商:Microchip Technology Inc 功能描述:64K, 8K X 8 , 1.8V SER EE, WA - Gel-pak, waffle pack, wafer, diced wafer on film |
| 25AA640_04 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:64K SPI Bus Serial EEPROM |
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