Preliminary W27C4096
256K × 16 ELECTRICALLY ERASABLE EPROM
Publication Release Date: March 1999
- 1 - Revision A1
GENERAL DESCRIPTION
The W27C4096 is a high speed, low power Electrically Erasable and Programmable Read Only
Memory organized as 262144 × 16 bits that operates on a single 5 volt power supply. The W27C4096
provides an electrical chip erase function.
FEATURES
• High speed access time:
120/150 nS (max.)
• Read operating current: 30 mA (max.)
• Erase/Programming operating current
30 mA (max.)
• Standby current: 100 µA (max.)
• Single 5V power supply
• +14V erase/+12V programming voltage
• Fully static operation
• All inputs and outp uts directly TTL/CMOS
compatible
• Three-state outputs
• Available packages: 40-pin 600 mil DIP, TSOP
and 44-pin PLCC
PIN CONFIGURATIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
40-pin
DIP
Q15
Q14
Q13
Q12
Q7
Q6
Q5
Q4
CE
GND GND
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
A17
A16
V DD
Q11
Q10
Q9
Q8
Q3
Q2
Q1
Q0
OE
V PP
232221201918
44-pin
PLCC
456 44123 40414243
39
38
37
36
35
34
33
32
31
A13
A12
A11
A10
A9
GND
NC
30
29
Q11
Q10
Q12
Q9
Q8
GND
NC
Q7
7
8
9
11
12
13
14
10
15
16
17
Q6
Q5
Q4 2827262524
Q
3
Q
2
Q
1
Q
0
/
O
E
N
C
A
0
A
1
A
2
A
3
A
4
A8
A7
A6
A5
/
C
E N C
Q
1
3
Q
1
4
Q
1
5
V
p
p
A
1
4
V
C
C
A
1
5
A
1
6
A
1
7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Q0
OE
40-pin
TSOP
A15
A8
A7
A6
A5
V
A13
A12
A11
CC
A9
A10
A17
A16
A14
17
18
19
20
A4
A3
A2
A1
23
22
21
32
31
30
29
28
27
26
25
24
39
38
37
36
35
34
33
40
V PP
CE
Q15
Q14
Q13
Q12
Q11
Q10
Q9
Q8
GND
A0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
BLOCK DIAGRAM
CE
OE
Q0
Q15
.
.
A0
.
.
A17
V
GND
CC
V PP
CONTROL
DECODER
CORE
ARRAY
OUTPUT
BUFFER
PIN DESCRIPTION
SYMBOL DESCRIPTION
A0 −A17 Address Inputs
Q0 −Q15 Data Inputs/Outputs
CE Chip Enable
OE Output Enable
V PP Program/Erase Supply Voltage
V CC Power Supply
GND Ground
NC No Connection