X20C05DI-35
| Model | X20C05DI-35 |
| Description | High Speed AUTOSTORE⑩ NOVRAM |
| PDF file | Total 19 pages (File size: 85K) |
| Chip Manufacturer | XICOR |
A
PPLICATION
N
OTE
A V A I L A B L E
X20C05
4K
AN56
X20C05
High Speed AUTOSTORE™ NOVRAM
512 x 8
FEATURES
DESCRIPTION
The Xicor X20C05 is a 512 x 8 NOVRAM featuring a
high-speed static RAM overlaid bit-for-bit with a non-
volatile electrically erasable PROM (E
2
PROM). The
X20C05 is fabricated with advanced CMOS floating
gate technology to achieve high speed with low power
and wide power-supply margin. The X20C05 features
the JEDEC approved pinout for byte-wide memories,
compatible with industry standard RAMs, ROMs,
EPROMs, and E
2
PROMs.
The NOVRAM design allows data to be easily trans-
ferred from RAM to E
2
PROM (store) and E
2
PROM 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
E
2
PROM, and a minimum 1,000,000 store operations to
the E
2
PROM. Data retention is specified to be greater
than 100 years.
•
•
•
•
•
•
•
•
Fast Access Time: 35ns, 45ns, 55ns
High Reliability
—Endurance: 1,000,000 Nonvolatile Store
Operations
—Retention: 100 Years Minimum
Power-on Recall
—E
2
PROM Data Automatically Recalled Into
SRAM Upon Power-up
AUTOSTORE™ NOVRAM
—User Enabled Option
—Automatically Stores SRAM Data Into the
E
2
PROM Array When V
CC
Low Threshold is
Detected
—Open Drain AUTOSTORE Status Output Pin
Software Data Protection
—Locks Out Inadvertent Store Operations
Low Power CMOS
—Standby: 250
µ
A
Infinite E
2
PROM Array Recall, and RAM Read
and Write Cycles
Upward compatible with X20C16 (16K)
PIN CONFIGURATION
PLASTIC
CERDIP
NC
A7
LCC
PLCC
VCC
WE
NE
NC
AS
NE
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
X20C05 21
20
19
18
17
16
15
VCC
WE
AS
A8
NC
NC
OE
NC
CE
I/O7
I/O6
I/O5
I/O4
I/O3
A6
A5
A4
A3
A2
A1
A0
NC
I/O0
5
6
7
8
9
4
3
2
1 32 31 30
29
28
27
26
A8
NC
NC
NC
OE
NC
CE
I/O7
I/O6
7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
V
X20C05
(TOP VIEW)
25
24
23
22
10
11
12
13
21
14 15 16 17 18 19 20
VSS
I/O1
I/O2
NC
I/O3
I/O4
I/O5
3827 FHD F02
3827 FHD F03
AUTOSTORE™ NOVRAM is a trademark of Xicor, Inc.
©Xicor, Inc. 1991 - 1997 Patents Pending
3827-2.7 7/31/97 T4/C0/D0 SH
1
Characteristics subject to change without notice
