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27C256-15/SO Datasheet

  • 27C256-15/SO

  • 256K (32K x 8) CMOS EPROM

  • 10頁

  • MICROCHIP   MICROCHIP

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Obsolete Device
27C256
256K (32K x 8) CMOS EPROM
FEATURES
鈥?High speed performance
- 90 ns access time available
鈥?CMOS Technology for low power consumption
- 20 mA Active current
- 100
碌A(chǔ)
Standby current
鈥?Factory programming available
鈥?Auto-insertion-compatible plastic packages
鈥?Auto ID aids automated programming
鈥?Separate chip enable and output enable controls
鈥?High speed 鈥渆xpress鈥?programming algorithm
鈥?Organized 32K x 8: JEDEC standard pinouts
- 28-pin Dual-in-line package
- 32-pin PLCC Package
- 28-pin SOIC package
- Tape and reel
鈥?Data Retention > 200 years
鈥?Available for the following temperature ranges:
- Commercial:
0擄C to +70擄C
- Industrial:
-40擄C to +85擄C
- Automotive:
-40擄C to +125擄C
PACKAGE TYPES
PLCC
32
31
30
4
3
2
1
A6
A5
A4
A3
A2
A1
A0
NC
O0
A7
A12
V
PP
NU
Vcc
A14
A13
5
6
7
29
28
27
8
9
10
11
12
13
14
15
16
17
18
19
20
26
25
24
23
22
21
A8
A9
A11
NC
OE
A10
CE
O7
O6
DIP/SOIC
V
PP
A12
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
V
SS
O1
O2
V
SS
NU
O3
O4
O5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
27C256
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DESCRIPTION
The Microchip Technology Inc. 27C256 is a CMOS
256K bit electrically Programmable Read Only Memory
(EPROM). The device is organized as 32K words by 8
bits (32K bytes). Accessing individual bytes from an
address transition or from power-up (chip enable pin
going low) is accomplished in less than 90 ns. This very
high speed device allows the most sophisticated micro-
processors to run at full speed without the need for
WAIT states. CMOS design and processing enables
this part to be used in systems where reduced power
consumption and reliability are requirements.
A complete family of packages is offered to provide the
most flexibility in applications. For surface mount appli-
cations, PLCC, or SOIC packaging is available. Tape
and reel packaging is also available for PLCC or SOIC
packages.
V
CC
A14
A13
A8
A9
A11
OE
A10
CE
O7
O6
O5
O4
O3
27C256
餂?/div>
2004 Microchip Technology Inc.
DS11001N-page 1

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