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Xicor Inc.

XM28C020 Datasheet Preview

XM28C020 Datasheet

5 Volt/ Byte Alterable E2PROM

No Preview Available !

XM28C020
2 Megabit Module
XM28C020
5 Volt, Byte Alterable E2PROM
256K x 8 Bit
TYPICAL FEATURES
High Density 2 Megabit (256K x 8) Module
Access Time of 150ns at –55°C to +125°C
Base Memory Component: Xicor X28C513
Pinout conforms to JEDEC Standard for
2 Megabit E2PROM
Fast Write Cycle Times
—128 Byte Page Write
—Byte or Page Write Cycle: 5ms Typical
—Complete Memory Rewrite: 10 Seconds
Early End of Write Detection
DATA Polling
—Toggle Bit Polling
Software Data Protection
Three Temperature Ranges
—Commercial: 0°C to +75°C
—Industrial: –40° to +85°C
—Military: –55° to +125°C
High Rel Module
—100% MIL-STD-883 Compliant Components
Endurance: 100,000 Cycles
FUNCTIONAL DIAGRAM
X28C513
A0–A15
I/O0–I/O7
OE
WE
CE
A0–A15
I/O0–I/O7
OE
WE
CE
A16
A17
X28C513
A0–A15
I/O0–I/O7
OE
WE
CE
© Xicor, Inc. 1991, 1995, 1996 Patents Pending
3872-1.9 6/18/97 T1/C0/D0 SH
DESCRIPTION
The XM28C020 is a high density 2 Megabit E2PROM
comprised of four X28C513 LCCs mounted on a co-fired
multilayered ceramic substrate. Individual components
are 100% tested prior to assembly in module form and
then 100% tested after assembly.
The XM28C020 is configured 256K x 8 bit. The module
supports a 128-byte page write operation. This com-
bined with DATA Polling or Toggle Bit Polling, effectively
provides a 39µs/byte write cycle, enabling the entire
array to be rewritten in 10 seconds.
The XM28C020 provides the same high endurance and
data retention as the X28C513.
X28C513
A0–A15
I/O0–I/O7
OE
WE
CE
X28C513
A0–A15
I/O0–I/O7
OE
WE
CE
PIN CONFIGURATION
NC
A16
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
VSS
1 32
2 31
3 30
4 29
5 28
6 27
7 26
8 25
XM28C020
9 24
10 23
11 22
12 21
13 20
14 19
15 18
16 17
VCC
WE
A17
A14
A13
A8
A9
A11
OE
A10
CE
I/O7
I/O6
I/O5
I/04
I/O3
3872 FHD F01
1
3872 FHD F02
Characteristics subject to change without notice




Xicor Inc.

XM28C020 Datasheet Preview

XM28C020 Datasheet

5 Volt/ Byte Alterable E2PROM

No Preview Available !

XM28C020
PIN DESCRIPTIONS
Addresses (A0–A17)
The Address inputs select an 8-bit memory location
during a read or write operation.
Chip Enable (CE)
The Chip Enable input must be LOW to enable all read/
write operations. When CE is HIGH, power consumption
is reduced (see Note 4).
Output Enable (OE)
The Output Enable input controls the data output buffers
and is used to initiate read operations.
Data In/Data Out (I/O0–I/O7)
Data is written to or read from the XM28C020 through
the I/O pins.
Write Enable (WE)
The Write Enable input controls the writing of data to the
XM28C020.
PIN NAMES
Symbol
A0–A17
I/O0–I/O7
WE
CE
OE
VCC
VSS
NC
Description
Address Inputs
Data Input/Output
Write Enable
Chip Enable
Output Enable
+5V
Ground
No Connect
3872 PGM T01
2


Part Number XM28C020
Description 5 Volt/ Byte Alterable E2PROM
Maker Xicor Inc.
Total Page 16 Pages
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