1996 Microchip Technology Inc.
DS11173E-page 1
27C512A
FEATURES
High speed performance
CMOS Technology for low power consumption
- 25 mA Active current
- 30
μ
A Standby current
Factory programming available
Auto-insertion-compatible plastic packages
Auto ID aids automated programming
High speed express programming algorithm
Organized 64K x 8: JEDEC standard pinouts
- 28-pin Dual-in-line package
- 32-pin PLCC Package
- 28-pin SOIC package
- 28-pin TSOP package
- 28-pin VSOP package
- Tape and reel
Data Retention > 200 years
Available for the following temperature ranges
- Commercial:
0C to +70C
- Industrial:
-40C to +85C
- Automotive:
-40C to +125C
DESCRIPTION
The Microchip Technology Inc. 27C512A is a CMOS
512K bit electrically Programmable Read Only Memory
(EPROM). The device is organized into 64K words by
8 bits (64K 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
microprocessors 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 high reliability are requirements.
A complete family of packages is offered to provide the
most flexibility in applications. For surface mount appli-
cations, PLCC, VSOP, TSOP or SOIC packaging is
available. Tape or reel packaging is also available for
PLCC or SOIC packages.
PACKAGE TYPES
TSOP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
V
SS
V
CC
A14
A13
A8
A9
A11
OE/V
PP
A10
CE
O7
O6
O5
O4
O3
A6
A5
A4
A3
A2
A1
A0
NC
O0
A8
A9
A11
NC
OE/V
PP
A10
CE
O7
O6
A
A
A
N
V
A
A
O
O
V
N
O
O
O
S
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
1
1
1
1
1
1
2
4
3
2
1
3
3
3
OE/V
PP
A11
A9
A8
A13
A14
V
CC
A15
A12
A7
A6
A5
A4
A3
A10
CE
D7
D6
D5
D4
D3
V
SS
D2
D1
D0
A0
A1
A2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A10
CE
O7
O6
O5
O4
O3
21
20
19
18
17
16
15
V
SS
O2
O1
O0
A0
A1
A2
14
13
12
11
10
9
8
OE/V
PP
A11
A9
A8
A13
A14
V
CC
22
23
24
25
26
27
28
A15
A12
A7
A6
A5
A4
A3
1
2
3
4
5
6
7
27C512A
PLCC
DIP/SOIC
VSOP
27C512A
2
2
512K (64K x 8) CMOS EPROM
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