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PDF 27C512A Data sheet ( Hoja de datos )
| Número de pieza | 27C512A | |
| Descripción | 512K (64K x 8) CMOS EPROM | |
| Fabricantes | Microchip Technology | |
| Logotipo |  |
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27C512A
512K (64K x 8) CMOS EPROM
FEATURES
• High speed performance
• CMOS Technology for low power consumption
- 25 mA Active current
- 30 µA 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: 0˚C to +70˚C
- Industrial:
-40˚C to +85˚C
- Automotive:
-40˚C to +125˚C
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
OE/VPP
A11
A9
A8
A13
A14
VCC
1
2
3
4
5
6
7
A15 8
A12 9
A7 10
A6 11
A5 12
A4 13
A3 14
PLCC
27C512A
28 A10
27 CE
26 D7
25 D6
24 D5
23 D4
22 D3
21 VSS
20 D2
19 D1
18 D0
17 A0
16 A1
15 A2
A6 5
A5 6
A4 7
A3 8
A2 9
A1 10
A0 11
NC 12
O0 13
29 A8
28 A9
27 A11
26 NC
25 OE/VPP
24 A10
23 CE
22 O7
21 O6
DIP/SOIC
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 VCC
27 A14
26 A13
25 A8
24 A9
23 A11
22 OE/VPP
21 A10
20 CE
19 O7
18 O6
17 O5
16 O4
15 O3
VSOP
OE/VPP
A11
A9
A8
A13
A14
VCC
A15
A12
A7
A6
A5
A4
A3
22
23
24
25
26
27
28
1
2
3
4
5
6
7
27C512A
21 A10
20 CE
19 O7
18 O6
17 O5
16 O4
15 O3
14 VSS
13 O2
12 O1
11 O0
10 A0
9 A1
8 A2
© 1996 Microchip Technology Inc.
This document was created with FrameMaker 4 0 4
DS11173E-page 1
1 page  
27C512A
FIGURE 1-2: PROGRAMMING WAVEFORMS (1)
Program
Verify
VIH
Address VIL
VIH
Data VIL
Address Stable
tAS
Data In Stable
6.5 V (3)
tDS
tDH
VCC 5.0V
VIH
tVCS
tPW
tCE
(2)
CE VIL
tCES
tOES
tOEH
13.0 V (3)
OE/V PP
VIL
tPRT
tOPW
tOR
tAH
Data Out Valid
tDF
(2)
Notes: (1) The input timing reference level is 0.8V for VIL and 2.0V for VIH.
(2) tDF and tOE are characteristics of the device but must be accommodated by the programmer.
(3) VCC = 6.5V ±0.25V, V PP = VH = 13.0V ±0.5V for express programming algorithm.
TABLE 1-6: MODES
Operation Mode
Read
Program
Program Verify
Program Inhibit
Standby
Output Disable
Identity
X = Don’t Care
CE OE/VPP A9
VIL VIL
X
VIL VH
X
VIL VIL
X
VIH VH
X
VIH X
X
VIL VIH
X
VIL VIL VH
O0 - O7
DOUT
DIN
DOUT
High Z
High Z
High Z
Identity Code
1.2 Read Mode
(See Timing Diagrams and AC Characteristics)
Read Mode is accessed when
a) the CE pin is low to power up (enable) the chip
b) the OE/VPP pin is low to gate the data to the
output pins
For Read operations, if the addresses are stable, the
address access time (tACC) is equal to the delay from
CE to output (tCE). Data is transferred to the output
after a delay (tOE) from the falling edge of OE/VPP.
© 1996 Microchip Technology Inc.
DS11173E-page 5
5 Page 
27C512A
27C512A Product Identification System
To order or to obtain information (e.g., on pricing or delivery),, please use listed part numbers, and refer to factory or listed sales offices.
27C512A – 70 I /P
Package:
L=
P=
SO =
TS =
VS =
Plastic Leaded Chip Carrier
Plastic DIP (600 Mil)
Plastic SOIC (300 Mil)
Thin Small Outline Package(TSOP) 8x20mm
Very Small Outline Package(VSOP) 8x13.4mm
Temperature
Range:
Blank = 0˚C to +70˚C
I = -40˚C to +85˚C
E = -40˚C to +125˚C
Access
Time:
90 =
10 =
12 =
15 =
90 ns
100 ns
120 ns
150 ns
Device:
27C512A 512K (64K x 8) CMOS EPROM
© 1996 Microchip Technology Inc.
DS11173E-page 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet 27C512A.PDF ] | |
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