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XM20C64-55 fiches techniques PDF

Xicor Inc. - High Speed AUTOSTORE NOVRAM

Numéro de référence XM20C64-55
Description High Speed AUTOSTORE NOVRAM
Fabricant Xicor Inc. 
Logo Xicor Inc. 





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XM20C64-55 fiche technique
XM20C64
64K
XM20C64
High Speed AUTOSTORENOVRAM
8K x 8
FEATURES
High Speed: tAA = 55ns
NO Batteries!!
Low Power CMOS
AUTOSTORENOVRAM
—Automatically Stores RAM data to E2PROM
upon Power-fail Detection
Open Drain AUTOSTORE Output Pin
—Provides Interrupt or Status Information
—Linkable to System Reset Circuitry
Auto Recall
—Automatically Recalls E2PROM Data During
Power-on
Fully Decoded Module
Full Military Temperature Range
— –55°C to +125°C
High Reliability
—Endurance: 1,000,000 Nonvolatile Store Cycles
—Data Retention: 100 Years
ESD Protection
2KV All Pins
Also Available in 66 Pin PUMA Package
FUNCTIONAL DIAGRAM
DESCRIPTION
The XM20C64 is a high speed nonvolatile RAM Module.
It is comprised of four Xicor X20C16 high speed
NOVRAMs, a high speed decoder and decoupling
capacitors mounted on a co-fired multilayered Ceramic
substrate. The XM20C64 is configured 8K x 8 and is fully
decoded. The module is a 28-lead DIP conforming to the
industry standard pinout for SRAMs.
The XM20C64 fully supports the AUTOSTORE feature,
providing hands-off automatic storing of RAM data
into E2PROM when VCC falls below the AUTOSTORE
threshold.
The XM20C64 is a highly reliable memory component,
supporting unlimited writes to RAM, a minimum 1,000,000
store cycles and a minimum 100 year data retention.
PIN CONFIGURATION
NE
OE
WE
A11 2 A0
A12 3 A1
CE
4
Y0
5
Y1
6
Y2
7
Y3
1
AUTOSTORE
AUTOSTORE™ NOVRAM is a trademark of Xicor, Inc.
©Xicor, Inc. 1991, 1995, 1996 Patents Pending
3874-1.6 6/20/96 T0/C2/D0 NS
2
NE
25
OE
31
WE
23
CE
2
NE
25
OE
31
WE
23
CE
2
NE
25
OE
31
WE
23
CE
2
NE
25
OE
31
WE
23
CE
A0–A10
I/O
30
A0–A10
I/O
30
A0–A10
I/O
30
A0–A10
I/O
30
1
NE
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A0–A10
28 VCC
27 WE
26 AS
25 A8
24 A9
23 A11
22 OE
21 A10
20 CE
19 I/O7
18 I/O6
17 I/O5
16 I/04
15 I/O3
3874 FHD F02.1
I/O0–I/O7
3874 FHD F01
Characteristics subject to change without notice

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