Datasheet 搜索 > Intersil（英特矽尔） > X24C44PI 数据手册 > X24C44PI 数据手册 1/14 页
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X24C44PI 数据手册 - Intersil（英特矽尔）
制造商:
Intersil（英特矽尔）
封装:
DIP-8
描述:
SRAM+EEPROM结构
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
X24C44PI数据手册
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若手册格式错乱，请下载阅览PDF原文件
Obsolete Product
REV 1.0 6/22/00
Characteristics subject to change without notice.
1 of 14
www.xicor.com
BLOCK DIAGRAM
Nonvolatile
Control
Logic
Column
Decode
Row
Decode
4-Bit
Counter
Decode
Instruction
Register
CE (1)
DI (3)
SK (2)
DO (4)
RECALL (6)
STORE (7)
Static
RAM
256-Bit
STORE
EEPROM
RECALL
Instruction
256 Bit
X24C44
16 x 16 Bit
Serial Nonvolatile Static RAM
FEATURES
•Advanced CMOS version of Xicor’s X2444
• 16 x 16 organization
• Single 5V supply
• Ideal for use with single chip microcomputers
—Static timing
—Minimum I/O interface
—Serial port compatible (COPS
™
, 8051)
—Easily interfaced to microcontroller ports
• Software and hardware control of nonvolatile
functions
•Auto RECALL on power-up
• TTL and CMOS compatible
•Low power dissipation
—Active current: 10mA maximum
—Standby current: 50µA maximum
• 8-lead PDIP, Cerdip, and 8-lead SOIC packages
• High reliability
—STORE cycles: 1,000,000
—Data retention: 100 years
DESCRIPTION
The Xicor X24C44 is a serial 256 bit NOVRAM featur-
ing a static RAM configured 16 x 16, overlaid bit-by-bit
with a nonvolatile EEPROM array. The X24C44 is fabri-
cated with Xicor’s Advanced CMOS Floating Gate
technology.
The Xicor NOVRAM design allows data to be trans-
ferred between the two memory arrays by means of
software commands or external hardware inputs. A
STORE operation (RAM data to EEPROM) is com-
pleted in 5ms or less and a RECALL operation
(EEPROM data to RAM) is completed in 2µs or less.
Xicor NOVRAMs are designed for unlimited write oper-
ations to RAM, either from the host or RECALLs from
EEPROM and a minimum 1,000,000 STORE opera-
tions. Inherent data retention is specified to be greater
than 100 years.
A
PPLICATION
N
OTE
A V A I L A B L E
AN3 • AN7 • AN8 • AN15• AN16 • AN25 • AN29
• AN30 • AN35 • AN36 • AN39 • AN56 • AN69
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