XM28C040 查看數據表（PDF） - Xicor -> Intersil
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XM28C040 Datasheet PDF : 17 Pages
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XM28C040
4 Megabit Module
XM28C040
5 Volt, Byte Alterable E2PROM
512K x 8 Bit
TYPICAL FEATURES
• High Density 4 Megabit (512K x 8) Module
• Access Time of 200ns at –55°C to +125°C
• Base Memory Component: Xicor X28C010
• Pinout Conforms to JEDEC Standard for
4 Megabit E2PROM
• Fast Write Cycle Times
—256 Byte Page Write
• 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 Modules all Components are
MIL-STD-883 Compliant
• Endurance: 100,000 Cycles
DESCRIPTION
The XM28C040 is a high density 4 Megabit E2PROM
comprised of four X28C010's 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 XM28C040 is configured 512K x 8 bit. The module
supports a 256-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 XM28C040 provides the same high endurance and
data retention as the X28C010.
FUNCTIONAL DIAGRAM
X28C010
A0–A16
I/O0–I/O7
OE
WE
CE
A0–A16
I/O0–I/O7
OE
WE
CE
A18
A17
X28C010
A0–A16
I/O0–I/O7
OE
WE
CE
X28C010
A0–A16
I/O0–I/O7
OE
WE
CE
X28C010
A0–A16
I/O0–I/O7
OE
WE
CE
PIN CONFIGURATION
A18
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
XM28C040
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
3873 FHD F02
© Xicor, Inc. 1991-1997 Patents Pending
3873-1.7 6/13/97 T1/C0/D0 SH
3873 FHD F01
1
Characteristics subject to change without notice
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