1CY 27H0 10
fax id: 3023
CY27H010
128K x 8 High-Speed CMOS EPROM
Features
• CMOS for optimum speed/power
• High speed
— t
AA
= 25 ns max. (commercial)
— t
AA
= 35 ns max. (military)
• Low power
— 275 mW max.
•
•
•
•
•
— Less than 85 mW when deselected
Byte-wide memory organization
100% reprogrammable in thewindowed package
EPROM technology
Capable of withstanding >2001V static discharge
Available in
— 32-pin PLCC
— 32-pin TSOP-I
— 32-pin, 600-mil plastic or hermetic DIP
— 32-pin hermetic LCC
try-standard 32-pin, 600-mil DIP, LCC, PLCC, and TSOP-I
packages. These devices offer high-density storage com-
bined with 40-MHz performance. The CY27H010 is available
in windowed and opaque packages. Windowed packages al-
low the device to be erased with UV light for 100% re-
programmability.
The CY27H010 is equipped with a power-down chip enable
(CE) input and output enable (OE). When CE is deasserted,
the device powers down to a low-power stand-by mode. The
OE pin three-states the outputs without putting the device into
stand-by mode. While CE offers lower power, OE provides a
more rapid transition to and from three-stated outputs.
The memory cells utilize proven EPROM floating-gate technol-
ogy and byte-wide intelligent programming algorithms. The
EPROM cell requires only 12.75 V for the supervoltage and
low programming current allows for gang programming. The
device allows for each memory location to be tested 100%,
because each location is written to, erased, and repeatedly
exercised prior to encapsulation. Each device is also tested
for AC performance to guarantee that the product will meet DC
and AC specification limits after customer programming.
The CY27H010 is read by asserting both the CE and the OE
inputs. The contents of the memory location selected by the
address on inputs A
16
–A
0
will appear at the outputs O
7
–O
0
.
Functional Description
The CY27H010 is a high-performance, 1-megabit CMOS
EPROM organized in 128 Kbytes. It is available in indus-
Logic Block Diagram
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
A
10
A
11
A
12
A
13
A
14
A
15
A
16
POWER DOWN
O
7
O
5
O
6
ADDRESS
DECODER
MULTIPLEXER
O
4
O
3
O
1
PROGRAMMABLE
ARRAY
O
2
O
0
Pin Configurations
DIP
Top View
V
PP
A
16
A
15
A
12
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
O
0
O
1
O
2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
V
CC
PGM
NC
A
14
A
13
A
8
A
9
A
11
OE
A
10
CE
O
7
O
6
O
5
O
4
O
3
H010–2
LCC/PLCC
Top View
CE
OE
OUTPUT ENABLE
DECODER
H010–1
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
O
0
4 3 2 1 32 31 30
29
5
28
6
27
7
26
8
25
9
24
10
23
11
22
12
21
13
14151617 181920
A
14
A
13
A
8
A
9
A
11
OE
A
10
CE
O
7
H010–3
Cypress Semiconductor Corporation
•
3901 North First Street
•
San Jose
• CA 95134 •
408-943-2600
August 1994 – Revised March 1997
CYPRESS [ CYPRESS SEMICONDUCTOR ]
