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PDF W27C512 Data sheet ( Hoja de datos )
| Número de pieza | W27C512 | |
| Descripción | 64K X 8 ELECTRICALLY ERASABLE EPROM | |
| Fabricantes | Winbond | |
| Logotipo |  |
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W27C512
64K × 8 ELECTRICALLY ERASABLE EPROM
GENERAL DESCRIPTION
The W27C512 is a high speed, low power Electrically Erasable and Programmable Read Only
Memory organized as 65536 × 8 bits that operates on a single 5 volt power supply. The W27C512
provides an electrical chip erase function.
FEATURES
• High speed access time:
45/70/90/120 nS (max.)
• Read operating current: 30 mA (max.)
• Erase/Programming operating current
30 mA (max.)
• Standby current: 1 mA (max.)
• Single 5V power supply
• +14V erase/+12V programming voltage
• Fully static operation
• All inputs and outputs directly TTL/CMOS
compatible
• Three-state outputs
• Available packages: 28-pin 600 mil DIP, 330 mil
32-pin PLCC
PIN CONFIGURATIONS
BLOCK DIAGRAM
A15
A12
A7
A6
A5
A4
A3
A2
A1
A0
Q0
Q1
Q2
GND
1 28
2 27
3 26
4 25
5 24
6 28-pin 23
7 DIP 22
8 21
9 20
10 19
11 18
12 17
13 16
14 15
VCC
A14
A13
A8
A9
A11
OE/Vpp
A10
CE
Q7
Q6
Q5
Q4
Q3
CE
OE/VPP
CONTROL
OUTPUT
BUFFER
Q0
.
.
Q7
A0
.
DECODER
.
A15
VCC
GND
CORE
ARRAY
A A VAA
A1 1NC1 1
7 2 5CC4 3
432 1 33 3
A6 5
2 1 0 29 A8
A5 6
A4 7
A3 8
A2 9
A1 10
32-pin
PLCC
28 A9
27 A11
26 NC
25 OE/Vpp
24 A10
A0 11
23 CE
NC
Q0
12 1
13 4
1
5
1
6
11
78
1
9
2 22
0 21
Q7
Q6
Q QGN QQ Q
1 2NC 3 4 5
D
PIN DESCRIPTION
SYMBOL
A0−A15
Q0−Q7
CE
OE /VPP
VCC
GND
NC
DESCRIPTION
Address Inputs
Data Inputs/Outputs
Chip Enable
Output Enable, Program/Erase
Supply Voltage
Power Supply
Ground
No Connection
Publication Release Date: November 1999
- 1 - Revision A4
1 page  
W27C512
CAPACITANCE
(VCC = 5V, TA = 25° C, f = 1 MHz)
PARAMETER
Input Capacitance
Output Capacitance
SYMBOL
CIN
COUT
CONDITIONS
VIN = 0V
VOUT = 0V
MAX.
6
12
UNIT
pF
pF
AC CHARACTERISTICS
AC Test Conditions
PARAMETER
Input Pulse Levels
Input Rise and Fall Times
Input and Output Timing Reference Level
Output Load
CONDITIONS
45/70 nS
90/120 nS
0 to 3.0V
0.45V to 2.4V
5 nS
10 nS
1.5V/1.5V
0.8V/2.0V
CL = 30 pF,
CL = 100 pF,
IOH/IOL = -0.4 mA/2.1 mA IOH/IOL = -0.4 mA/2.1 mA
AC Test Load and Waveforms
+1.3V
(IN914)
DOUT
3.3K ohm
100 pF for 90/120 nS (Including Jig and Scope)
30 pF for 45/70 nS (Including Jig and Scope)
Input
2.4V
For 90/120 nS
0.45V
Test Points
2.0V
0.8V
Input
For 45/70 nS
3.0V
0V
Test Point
1.5V
Output
Test Points
2.0V
0.8V
Output
Test Point
1.5V
Publication Release Date: November 1999
- 5 - Revision A4
5 Page 
SMART PROGRAMMING ALGORITHM 2
W27C512
Increment
Address
Start
Address = First Location
Vcc = 5.0V
X=0
Program One 100 µS Pulse
OE/VPP = 12V
Fail
No
Increment X
X = 25?
No
Yes
Verify One Byte
OE/VPP = VIL
Pass
Verify One Byte
OE/VPP = VIL
Pass
Fail
Last Address
?
Yes
Compare
All Bytes to
Original
Data
Pass
Device
Passed
Fail
Device
Failed
- 11 -
Publication Release Date: November 1999
Revision A4
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet W27C512.PDF ] | |
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