CY7C274-45WMB Cypress Semiconductor Corp, CY7C274-45WMB Datasheet

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CY7C274-45WMB

Manufacturer Part Number
CY7C274-45WMB
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet
1.CY7C274-45WMB.pdf (13 pages)

Specifications of CY7C274-45WMB

Density
256Kb
Organization
32Kx8
Interface Type
Parallel
In System Programmable
In System/External
Access Time (max)
45ns
Package Type
Windowed CDIP
Reprogramming Technique
UV
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Supply Current
130mA
Pin Count
28
Mounting
Through Hole
Operating Temp Range
-55C to 125C
Operating Temperature Classification
Military
Lead Free Status / RoHS Status
Not Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Bonase Electronics (HK) Co., Limited Bonase Electronics (HK) Co., Limited
Part Number:
CY7C274-45WMB
Manufacturer:
CYP
Quantity:
267
Company:
BOSTOCK HK LIMITED BOSTOCK HK LIMITED
Part Number:
CY7C274-45WMB
Manufacturer:
CYP
Quantity:
558
Cypress Semiconductor Corporation
Document #: 38-04008 Rev. *C
Features
Functional Description
The
32,768-word by 8-bit CMOS PROMs. When disabled (CE
HIGH), the 7C271/7C274 automatically powers down into a
• CMOS for optimum speed/power
• Windowed for reprogrammability
• High speed
• Low power
• Super low standby power
• EPROM technology 100% programmable
• Slim 300-mil package (7C271)
• Direct replacement for bipolar PROMs
• Capable of withstanding >2001V static discharge
Logic Block Diagram
A
A
A
A
A
— 30 ns (Commercial)
— 35 ns (Military)
— 660 mW (commercial)
— 715 mW (military)
— Less than 165 mW when deselected
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
(7C271) CS
(7C271) CS
(7C274) OE
CY7C271
CE
X ADDRESS
1
2
Y ADDRESS
and
PROGRAMABLE
32K x 8 Power Switched and Reprogrammable PROM
256 x 1024
ARRAY
CY7C274
POWER-DOWN
MULTIPLEXER
8 x 1 OF 128
are
high-performance
•
198 Champion Court
Pin Configurations
low-power stand-by mode. The CY7C271 is packaged in the
300-mil slim package. The CY7C274 is packaged in the
industry standard 600-mil package. Both the CY7C271 and
CY7C274 are available in a cerDIP package equipped with an
erasure window to provide for reprogrammability. When
exposed to UV light, the PROM is erased and can be repro-
grammed. The memory cells utilize proven EPROM floating
gate technology and byte-wide intelligent programming
algorithms.
The CY7C271 and CY7C274 offer the advantage of lower
power, superior performance, and programming yield. The
EPROM cell requires only 12.5V for the super voltage, and low
current requirements 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 PROM is also tested
for AC performance to guarantee that after customer
programming, the product will meet DC and AC specification
limits.
Reading the 7C271 is accomplished by placing active LOW
signals on CS
7C274 is accomplished by placing active LOW signals on OE and
CE. The contents of the memory location addressed by the address
lines (A
O
O
O
O
O
O
O
O
7
6
5
4
3
2
1
0
•
0
NC
O
A
A
A
A
A
A
A
−A
LCC/PLCC (Opaque Only)
6
3
2
1
0
5
4
0
GND
14
San Jose
O
O
O
A
A
A
A
A
A
A
A
A
A
5
6
7
8
9
10
11
12
13
9
8
7
6
5
4
3
2
1
0
0
1
2
) will become available on the output lines (O
14151617
4
1
DIP/Flatpack
and CE, and an active HIGH on CS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
3 2 1
7C271
7C271
,
32
181920
CA 95134-1709
31
28
27
26
25
24
23
22
21
20
19
18
17
16
15
30
29
28
27
26
25
24
23
22
21
CS
CS
V
A
A
A
A
A
CE
O
O
O
O
O
CC
10
11
12
13
14
7
6
5
4
3
1
2
A
A
A
NC
CS
CS
CE
O
O
12
13
14
7
6
1
2
LCC/PLCC (Opaque Only)
NC
O
Revised August 17, 2006
A
A
A
A
A
A
A
6
3
2
1
0
5
4
0
GND
V
A
O
O
O
A
A
A
A
A
A
A
A
PP
12
5
6
7
8
9
10
11
12
13
7
6
5
4
3
2
1
0
0
1
2
14151617
4
•
DIP/Flatpack
1
2
3
4
5
6
7
8
9
10
11
12
13
14
3 2 1
7C274
7C274
CY7C271
CY7C274
408-943-2600
2
32
. Reading the
181920
31
28
27
26
25
24
23
22
21
20
19
18
17
16
15
30
0
29
28
27
26
25
24
23
22
21
−O
V
A
A
A
A
A
OE
A
CE
O
O
O
O
O
CC
14
13
8
9
11
10
7
6
5
4
3
7
A
O
O
A
A
NC
OE
A
CE
).
8
9
11
10
7
6
[+] Feedback

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CY7C274-45WMB Summary of contents

Page 1

... The CY7C271 is packaged in the 300-mil slim package. The CY7C274 is packaged in the industry standard 600-mil package. Both the CY7C271 and CY7C274 are available in a cerDIP package equipped with an erasure window to provide for reprogrammability. When exposed to UV light, the PROM is erased and can be repro- grammed ...

Page 2

... CC GND < V < Output Disabled OUT CC [ Max GND CC OUT V = Max 2.0V, Commercial mA, CE=V OUT IL Military V = Max Commercial OUT Military CY7C271 CY7C274 7C271-55 Unit 120 mA 130 Ambient Temperature V CC ° ° 5V ±10 +70 C ° ° −55 5V ±10 +125 C 7C271- 35, 45, 55 7C274-30, 35, 45, Min. ...

Page 3

... MHz 5.0V CC [6] R1 500Ω 658Ω MIL 5V 3.0V GND R2 333Ω (403Ω MIL) JIG AND SCOPE (b) High Z Load OUTPUT CY7C271 CY7C274 7C271- 35, 45, 55 7C274-30, 35, 45, Min. Max. 3.0 0.4 Max. Unit ALL INPUT PULSES 90% 90% 10% 10% ≤ ...

Page 4

... Wsec/cm 2 with a 12 mW/cm power rating, the exposure time would be approx- imately 35 minutes. The CY7C271 or CY7C274 needs to be within 1 inch of the lamp during erasure. Permanent damage may result if the Note 7. CS and CS are used on the 7C271 only ...

Page 5

... Read or Output Disable Mode Other Read Power Down Output Disable Output Disable Program Program Verify Program Inhibit Blank Check Table 2. CY7C274 Mode Selection Read or Output Disable Mode Other Read Output Disable Power Down Program Program Verify Program Inhibit Blank Check Notes 8 ...

Page 6

... DIP Top View 7C271 GND 14 DIP Top View 7C274 GND 14 Document #: 38-04008 Rev. *C Figure 1. Programming Pinouts LCC Top View 7C271 PGM VFY 14151617 LCC Top View 7C274 VFY PGM 14151617 CY7C271 CY7C274 PGM 24 23 VFY 181920 VFY PGM 181920 Page [+] Feedback ...

Page 7

... CYCLE PERIOD 1.1 1.0 0.9 0.8 V =5. =25°C A 0.7 0 2.0 3.0 4.0 CYCLE PERIOD (ns) CY7C271 CY7C274 NORMALIZED ACCESS TIME vs. SUPPLY VOLTAGE 1.2 1.0 0.8 0.6 T =25°C A 0.4 4.0 4.5 5.0 5.5 6.0 SUPPLYVOLTAGE (V) TYPICAL ACCESS TIME CHANGE vs. OUTPUT LOADING 40 30 ...

Page 8

... Ordering Information Speed (ns) Ordering Code 35 CY7C271-35WMB 45 CY7C271-45WMB CY7C274-45WMB 55 CY7C271-55WMB MILITARY SPECIFICATIONS Group A Subgroup Testing DC Characteristics Parameter Notes 10. 7C271 only (CS and 11. 7C274 only. Document #: 38-04008 Rev. *C Package Package Type Name W22 28-Lead (300-Mil) Windowed CerDIP W22 28-Lead (300-Mil) Windowed CerDIP W16 28-Lead (600-Mil) Windowed CerDIP ...

Page 9

... SEATING PLANE 1.345[34.16] 1.385[35.18] 0.120[3.05] 0.140[3.55] 0.015[0.38] 0.060[1.52] 0.055[1.39] 0.065[1.65] 0.015[0.38] 0.020[0.50] SEE LEAD END OPTION LEAD END OPTION CY7C271 CY7C274 DIMENSIONS IN INCHES [MM] MIN. MAX. REFERENCE JEDEC MO-095 PACKAGE WEIGHT: 2.15 gms 0.290[7.36] 0.325[8.25] 0.009[0.23] 3° MIN. 0.012[0.30] 0.310[7.87] 0.385[9.78] 51-85014-*D Page ...

Page 10

... Package Diagrams (continued) Figure 3. 32-Pin Windowed Rectangular Leadless Chip Carrier Q55 Document #: 38-04008 Rev. *C MIL-STD-1835 C-12 51-80103-*A CY7C271 CY7C274 Page [+] Feedback ...

Page 11

... Package Diagrams (continued) Figure 4. 28-Lead (600-Mil) Windowed CerDIP W16 Document #: 38-04008 Rev. *C MIL-STD-1835 D-10 Config. A CY7C271 CY7C274 51-80020-** Page [+] Feedback ...

Page 12

... The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. MIL-STD-1835 D-15 Config. A CY7C271 CY7C274 51-80087-** Page [+] Feedback ...

Page 13

... Document History Page Document Title: CY7C271 CY7C274 32K x 8 Power Switched and Reprogrammable PROM Document Number: 38-04008 Issue REV. ECN NO. Date ** 113864 3/8/02 A* 118899 10/10/02 *B 122249 12/27/02 *C 499542 See ECN Document #: 38-04008 Rev. *C Orig. of Description of Change Change DSG Changed from Spec number: 38-00068 to 38-04008 ...

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