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Número de pieza | X20C04JMB-25 | |
Descripción | Nonvolatile Static RAM | |
Fabricantes | Xicor | |
Logotipo | ![]() |
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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
1 page ![]() ![]() X20C04
ENDURANCE AND DATA RETENTION
Parameter
Endurance
Store Cycles
Data Retention
Min.
100,000
1,000,000
100
MODE SELECTION
CE WE NE
HXX
L HH
L LH
L LH
L HL
L LL
L HH
L LL
L HL
OE
X
L
H
H
L
H
H
L
H
Mode
Not Selected
Read RAM
Write “1” RAM
Write “0” RAM
Array Recall
Nonvolatile Storing
Output Disabled
Not Allowed
No Operation
Units
Data Changes Per Bit
Store Cycles
Years
3825 PGM T07.1
I/O
Output High Z
Output Data
Input Data High
Input Data Low
Output High Z
Output High Z
Output High Z
Output High Z
Output High Z
Power
Standby
Active
Active
Active
Active
Active
Active
Active
Active
3825 PGM T09.1
EQUIVALENT A.C. LOAD CIRCUIT
5V
1.92KΩ
OUTPUT
A.C. CONDITIONS OF TEST
Input Pulse Levels
Input Rise and
Fall Times
Input and Output
Timing Levels
0V to 3V
10ns
1.5V
3825 PGM T08.2
1.37KΩ
100pF
3825 FHD F04.1
5
5 Page ![]() ![]() X20C04
PACKAGING INFORMATION
28-LEAD HERMETIC DUAL IN-LINE PACKAGE TYPE D
1.490 (37.85) MAX.
PIN 1
0.610 (15.49)
0.500 (12.70)
0.005 (0.127) MIN.
0.100 (2.54) MAX.
SEATING
PLANE
0.150 (3.81) MIN. 0.200 (5.08)
0.125 (3.18)
0.110 (2.79)
0.090 (2.29)
TYP. 0.100 (2.54)
0.065 (1.65)
0.038 (0.97)
TYP. 0.055 (1.40)
0.620 (15.75)
0.590 (14.99)
TYP. 0.614 (15.60)
0.232 (5.90) MAX.
0.060 (1.52)
0.015 (0.38)
0.023 (0.58)
0.014 (0.36)
TYP. 0.018 (0.46)
0.015 (0.38)
0.008 (0.20)
0°
15°
NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
3926 FHD F08
11
11 Page |
Páginas | Total 15 Páginas | |
PDF Descargar | [ Datasheet X20C04JMB-25.PDF ] |
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