CY7C266
8Kx8 Power-Switched and Reprogrammable PROM
powers down into a low-power standby mode. It is packaged
in a 600-mil-wide package. The reprogrammable packages
are equipped with an erasure window; when exposed to UV
light, these PROMs are erased and can then be repro-
grammed. The memory cells utilize proven EPROM
Features
• CMOS for optimum speed/power
• Windowed for reprogrammability
• High speed
floating-gate
technology
and
byte-wide
intelligent
— 20 ns (Commercial)
programming algorithms.
• Low power
The CY7C266 is a plug-in replacement for EPROM devices.
The EPROM cell requires only 12.5V for the super voltage and
low-current requirements allow for gang programming. The
EPROM cells allow for each memory location to be tested
100%, as each location is written into, erased, and repeatedly
exercised prior to encapsulation. Each PROM is also tested
for AC performance to guarantee that after customer
programming, the product will meet DC and AC specification
limits.
— 660 mW (Commercial)
• Super low standby power
— Less than 85 mW when deselected
• EPROM technology 100% programmable
• 5V ±10% VCC, commercial and military
• TTL-compatible I/O
• Direct replacement for 27C64 EPROMs
Reading is accomplished by placing an active LOW signal on
OE and CE. The contents of the memory location addressed
by the address lines (A0 through A12) will become available on
the output lines (O0 through O7).
Functional Description
The CY7C266 is a high-performance 8192-word by 8-bit
CMOS PROM. When deselected, the CY7C266 automatically
Logic Block Diagram
Pin Configurations
CerDIP
O
O
7
Top View
A
0
1
28
27
26
V
V
CC
CC
A
A
1
2
A
V
CC
12
2
3
A
7
6
NC
ROW
PROGRAMMABLE
ARRAY
A
6
4
MULTIPLEXER
25
24
23
22
21
A
8
A
9
ADDRESS
A
3
A
5
A
4
5
6
A
4
A
11
A
3
A
2
7
8
OE
O
O
5
A
5
A
10
A
1
9
20
19
18
17
16
7C266
CE
A
6
A
0
10
11
12
13
O
7
O
6
ADDRESS
DECODER
A
7
O
0
4
O
1
O
5
A
8
O
2
O
4
A
9
GND
O
3
14
15
O
3
COLUMN
ADDRESS
A
10
LCC
A
11
12
Top View
A
O
O
2
1
4
3
2
32 31 30
1
A
A
29
28
27
8
6
POWER DOWN
5
6
7
8
A
A
5
4
9
A
A
11
A
3
A
2
A
1
A
0
26 NC
OE
25
24
9
A
10
10
11
12
13
23 CE
7C266
NC
O
0
O
O
22
21
O
0
7
6
14151617 181920
CE
OE
Cypress Semiconductor Corporation
Document #: 38-04005 Rev. *C
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised August 16, 2006
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