CY27C256-120PC Cypress Semiconductor Corporation., CY27C256-120PC Datasheet

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CY27C256-120PC

Manufacturer Part Number
CY27C256-120PC
Description
Manufacturer
Cypress Semiconductor Corporation.
Datasheet

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Part Number:
CY27C256-120PC
Manufacturer:
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Quantity:
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Part Number:
CY27C256-120PC
Manufacturer:
CYPRESS
Quantity:
10
Features
Functional Description
The CY27C256 is a high-performance 32,768-word by 8-bit
CMOS EPROM. When disabled (CE HIGH), the CY27C256
automatically powers down into a low-power stand-by mode.
The CY27C256 is packaged in the industry standard 600-mil
DIP, PLCC, and TSOP packages. The CY27C256 is also avail-
Cypress Semiconductor Corporation
• Wide speed range
• Low power
• Low standby power
Note:
1.
— 45 ns to 200 ns (commercial and military)
— 248 mW (commercial)
— 303 mW (military)
— Less than 83 mW when deselected
10% Power supply tolerance
For PLCC only: Pins 1 and 17 are common and tied to the die attach pad. They must therefore be DU (don’t use) for the PLCC package.
Logic Block Diagram
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
ADDRESS
ADDRESS
DECODER
ADDRESS
COLUMN
ROW
CE
OE
PROGRAMABLE
256 x 1024
ARRAY
POWER–DOWN
MULTIPLEXER
8 x 1 OF 128
3901 North First Street
27c256–1
able in a CerDIP package equipped with an erasure window
to provide for reprogrammability. When exposed to UV light,
the EPROM is erased and can be reprogrammed. The mem-
ory cells utilize proven EPROM floating gate technology and
byte-wide intelligent programming algorithms.
The CY27C256 offers the advantage of lower power and su-
perior performance and programming yield. The EPROM cell
requires only 12.5V for the super voltage, and low current re-
quirements allow for gang programming. The EPROM cells
allow each memory location to be tested 100% because each
location is written into, erased, and repeatedly exercised prior
to encapsulation. Each EPROM is also tested for AC perfor-
mance to guarantee that after customer programming, the
product will meet both DC and AC specification limits.
Reading the CY27C256 is accomplished by placing active
LOW signals on OE and CE. The contents of the memory location
addressed by the address lines (A
the output lines (O
O
O
O
O
O
O
O
O
7
6
5
4
3
2
1
0
Pin Configurations
32K x 8-Bit CMOS EPROM
GND
V
A
O
O
O
PP
A
A
A
A
A
A
A
A
12
7
5
4
3
2
1
0
0
1
2
6
San Jose
DIP/Flatpack
1
2
3
4
5
6
7
8
9
10
11
12
13
14
0
27C256
- O
7
).
28
27
26
25
24
23
22
21
20
19
18
17
16
15
27c256–2
V
A
A
A
A
A
OE
A
CE
O
O
O
O
O
CC
14
13
8
9
11
10
May 1993 – Revised August 1994
7
6
5
4
3
CA 95134
0
- A
NC
A
A
A
A
A
A
A
O
6
3
2
1
0
5
4
0
14
) will become available on
5
6
7
8
9
10
11
12
13
14151617
LCC/PLCC
4
3 2 1
CY27C256
27C256
fax id: 3013
32
181920
408-943-2600
31
[1]
30
29
28
27
26
25
24
23
22
21
27c256–3
A
A
A
NC
OE
A
CE
O
O
8
9
11
10
7
6

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CY27C256-120PC Summary of contents

Page 1

... EPROM is erased and can be reprogrammed. The mem- ory cells utilize proven EPROM floating gate technology and byte-wide intelligent programming algorithms. The CY27C256 offers the advantage of lower power and su- perior performance and programming yield. The EPROM cell requires only 12.5V for the super voltage, and low current re- quirements allow for gang programming ...

Page 2

... TSOP T op View 27C256 DC Voltage Applied to Outputs in High Z State................................................ -0.5V to +7.0V DC Input Voltage .............................................-3.0V to +7.0V DC Program Voltage .................................................... 13.0V Static Discharge Voltage ........................................... >2001V (per MIL-STD-883, Method 3015) Latch-Up Current ..................................................... >200 mA UV Exposure ................................................ 7258 Wsec/cm 2 CY27C256 120 150 200 ...

Page 3

... Max Commercial mA, CE=V , OUT IL Military Max Commercial CC IH Military Test Conditions MHz 5. CY27C256 27C256-45, 55, 70, 90, 120, 150, 200 Min. Max. Unit 2.4 V 0 –0.3 0.8 V –10 +10 A –10 +10 A –40 +40 –20 – ...

Page 4

... High Z Load 125 OUTPUT 2.00V Military [4,7 ] 27C256-45 27C256- 55 Min. Max. Min [4, 7] 27C256-120 Min. Max CY27C256 ALL INPUT PULSES 3.0V 90% 10% GND 5 ns 1.9V 27C256-70 27C256-90 Max. Min. Max. Min. Max ...

Page 5

... The recommended dose of ultraviolet light for erasure is a wavelength of 2537 Å for a minimum dose (UV intensity mul- tiplied by exposure time Wsec/cm2. For an ultraviolet 2 lamp with a 12 mW/cm power rating, the exposure time would be approximately 35 minutes. The CY27C256 needs to be Table 1. CY27C256 Mode Selection. Mode ...

Page 6

... 1.0 2.0 3.0 4.0 OUTPUT VOLTAGE (V) NORMALIZED SUPPLYCURRENT vs. ACCESS TIME 1.2 1.15 1.1 1.05 1.0 0.95 V =5. 0.85 0.8 0.75 2.0 3.0 4.0 0 100 6 CY27C256 NORMALIZED ACCESS TIME vs. SUPPLY VOLTAGE 1.25 1.2 1.15 1.1 1.05 1.0 0.95 0.9 0.85 0.8 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) TYPICAL ACCESS TIME CHANGE vs. OUTPUT LOADING 30.0 25.0 20.0 15.0 10.0 V =4. 0.0 0 200 400 600 800 1000 CAPACITANCE (pF) V =5.6V ...

Page 7

... CY27C256-55WC CY27C256-55ZC CY27C256-55WMB 70 CY27C256-70JC CY27C256-70PC CY27C256-70WC CY27C256-70ZC CY27C256-70WMB 90 CY27C256-90JC CY27C256-90PC CY27C256-90WC CY27C256-90ZC CY27C256-90WMB 120 CY27C256-120JC CY27C256-120PC CY27C256-120WC CY27C256-120ZC CY27C256-120WMB 150 CY27C256-150JC CY27C256-150PC CY27C256-150WC CY27C256-150ZC CY27C256-150WMB 200 CY27C256-200JC CY27C256-200PC CY27C256-200WC CY27C256-200ZC CY27C256-200WMB Notes: 10. Most of these products are available in industrial temperature range. Contact a Cypress representative for specifications and product availability. ...

Page 8

... Ordering Information (continued) Speed (ns) Ordering Code 45 CY27C256T-45WC CY27C256T-45ZC CY27C256T-45WMB 55 CY27C256T-55WC CY27C256T-55ZC CY27C256T-55WMB 70 CY27C256T-70WC CY27C256T-70ZC CY27C256T-70WMB MILITARY SPECIFICATIONS Group A Subgroup Testing DC Characteristics Parameter Subgroups ...

Page 9

... Package Diagrams 32-Lead Plastic Leaded Chip Carrier J65 28-Lead (600-Mil) Molded DIP P15 9 CY27C256 ...

Page 10

... Package Diagrams (Continued) 28-Lead (600-Mil) Windowed CerDIP W16 MIL-STD-1835 D-10 Config.A 28-Lead Thin Small Outline Package Z28 10 CY27C256 ...

Page 11

... The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. 32-Lead Thin Small Outline Package Z32 CY27C256 ...

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