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參數(shù)資料
| 型號： | SEA Series |
| 英文描述： | SRAM Memory Card 128 kB Through512 kB(128 kB - 512 kB靜態(tài)RAM存儲器卡) |
| 中文描述： | SRAM存儲卡128 kB的Through512 kB左右（128 kB的- 512 KB的靜態(tài)RAM的存儲器卡） |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 98K |
| 代理商： | SEA SERIES |
June 2000 Rev. 3 - ECO #12894
1
PCMCIA Flash Memory Card
SEA Series
PC Card Products
Features
High Performance SRAM Memory Card
Single 5 Volt Supply
Fast Access Times: 150ns
x8 Interface (subset of PCMCIA standard)
Low Power CMOS technology provides very low
power and reliable data retention characteristics
- operating current 80mA maximum
- standby current < 100μA typical
Rechargeable Lithium battery with recharge circuitry
- eliminates the need for replaceable batteries
- standby current during recharge typically < 2mA
- battery backup time
18 months - typical
typical based on 512kB (lower densities will have greater
storage times)
Unlimited write cycles, no endurance issues
2KB EEPROM attribute memory containing CIS
(optional)
Optional Hardware Write Protect Switch
PC Card Standard Type I Form Factor
The WEDC
SEA
SRAM Series memory cards offer
a high performance nonvolatile storage solution for
code and data storage, disk caching, and write
intensive mobile and embedded applications.
Packaged in PCMCIA type I housing the WEDC
SRAM SEA series is based on 1 or 4Mbit SRAM
memories, providing densities from 128 Kbytes to
512 Kbytes.
The SEA series of SRAM memory cards requires a
5V power supply and operates at speeds to 150ns.
The cards are based on advanced CMOS technology
providing very low power and reliable data retention
characteristics. WEDC’s SRAM cards contain a
rechargeable lithium battery and recharge circuitry,
eliminating the need for replaceable batteries found
in many SRAM cards.
WEDC’s standard cards are shipped with WEDC’s
SRAM Logo. Cards are also available with blank
housings (no Logo). The blank housings are available
in both a recessed (for label) and flat housing. Please
contact WEDC sales representative for further
information on Custom artwork.
SRAM Memory Card 128 kB through512 kB
Block Diagram
512KB SRAM Card Shown
+
decoder
[A0..A18]
/CS
[DO..D7]
Write Prot
S1
WP
Vcc
MEMORY
optional
CA0
+ + +
/CS-A
//RD
/WR
/RD
CTRL
/RD
CTRL
Power Management
Lithium Bat.
to internal
Vcc
BVD1
GND
VS1
VS2
[DO..D7]
I/O BUFFER
SRAM
512K x 8
[A1..A11]
NC
NC
+
2. pull up resistor (min 10k)
Notes:
1. pull down resistor (min 100k)
+
+
ADDREsS BUS
General Description
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