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XM28C040MHR-25 반도체 회로 부품 판매점

5 Volt/ Byte Alterable E2PROM



Xicor Inc. 로고
Xicor Inc.
XM28C040MHR-25 데이터시트, 핀배열, 회로
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


XM28C040MHR-25 데이터시트, 핀배열, 회로
XM28C040
PIN DESCRIPTIONS
Addresses (A0–A18)
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 XM28C040 through
the I/O pins.
Write Enable (WE)
The Write Enable input controls the writing of data to the
XM28C040.
PIN NAMES
Symbol
A0–A18
I/O0–I/O8
WE
CE
OE
VCC
VSS
NC
Description
Address Inputs
Data Input/Output
Write Enable
Chip Enable
Output Enable
+5V
Ground
No Connect
3873 PGM T01
2




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( xicor )

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