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X20C04PI-15 Datasheet

Nonvolatile Static RAM

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X20C04PI-15 pdf
X20C04
4K
X20C04
Nonvolatile Static RAM
512 x 8 Bit
FEATURES
High Reliability
—Endurance: 1,000,000 Nonvolatile Store
Operations
—Retention: 100 Years Minimum
Power-on Recall
—E2PROM Data Automatically Recalled Into
SRAM Upon Power-up
Lock Out Inadvertent Store Operations
Low Power CMOS
—Standby: 250µA
Infinite E2PROM Array Recall, and RAM Read
and Write Cycles
Compatible with X2004
DESCRIPTION
The Xicor X20C04 is a 512 x 8 NOVRAM featuring a
static RAM overlaid bit-for-bit with a nonvolatile electri-
cally erasable PROM (E2PROM). The X20C04 is fabri-
cated with advanced CMOS floating gate technology to
achieve low power and wide power-supply margin. The
X20C04 features the JEDEC approved pinout for byte-
wide memories, compatible with industry standard RAMs,
ROMs, EPROMs, and E2PROMs.
The NOVRAM design allows data to be easily trans-
ferred from RAM to E2PROM (store) and E2PROM to
RAM (recall). The store operation is completed in 5ms or
less and the recall operation is completed in 5µs or less.
Xicor NOVRAMS are designed for unlimited write
operations to RAM, either from the host or recalls from
E2PROM, and a minimum 1,000,000 store operations to
the E2PROM. Data retention is specified to be greater
than 100 years.
PIN CONFIGURATION
PLASTIC
CERDIP
NE
NC
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
VSS
1 28
2 27
3 26
4 25
5 24
6 23
7 22
8 X20C04 21
9 20
10 19
11 18
12 17
13 16
14 15
VCC
WE
NC
A8
NC
NC
OE
NC
CE
I/O7
I/O6
I/O5
I/O4
I/O3
3825 FHD F02
LCC
PLCC
4 3 2 1 32 31 30
A6 5
29 A8
A5 6
28 NC
A4 7
27 NC
A3 8
A2 9
X20C04
(TOP VIEW)
26 NC
25 OE
A1 10
24 NC
A0 11
23 CE
NC 12
22 I/O7
I/O0 13
21 I/O6
14 15 16 17 18 19 20
3825 FHD F03
©Xicor, Inc. 1992, 1995, 1996 Patents Pending
3825-2.8 7/31/97 T4/C0/D0 SH
1 Characteristics subject to change without notice
Xicor
Xicor



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