Cypress CY7C271 32k x 8 power switched and reprogrammable prom Datasheet

CY7C271
CY7C274
32K x 8 Power Switched and Reprogrammable PROM
Features
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 reprogrammed. The memory cells utilize proven EPROM floating
gate technology and byte-wide intelligent programming
algorithms.
• CMOS for optimum speed/power
• Windowed for reprogrammability
• High speed
— 30 ns (Commercial)
— 35 ns (Military)
• Low power
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.
— 660 mW (commercial)
— 715 mW (military)
• Super low standby power
— Less than 165 mW when deselected
EPROM technology 100% programmable
Slim 300-mil package (7C271)
Direct replacement for bipolar PROMs
Capable of withstanding >2001V static discharge
Functional Description
The CY7C271 and CY7C274 are high-performance
32,768-word by 8-bit CMOS PROMs. When disabled (CE
HIGH), the 7C271/7C274 automatically powers down into a
Reading the 7C271 is accomplished by placing active LOW
signals on CS1 and CE, and an active HIGH on CS2. Reading the
7C274 is accomplished by placing active LOW signals on OE and
CE. The contents of the memory location addressed by the address
lines (A0−A14) will become available on the output lines (O0−O7).
Pin Configurations
Logic Block Diagram
DIP/Flatpack
A9
A8
A7
A6
O7
A14
A13
X ADDRESS
256 x 1024
PROGRAMABLE
ARRAY
A11
A10
8 x 1 OF 128
MULTIPLEXER
O6
A5
A4
A3
A2
A1
A0
O5
A9
A8
A7
O3
A3
Y ADDRESS
A2
25
5
24
6 7C271 23
22
7
21
8
O0
O1
O2
13
18
17
16
GND
14
15
A5
A4
27
26
9
10
11
12
O4
A6
28
2
3
4
20
19
VPP
A12
A7
A6
A13
A14
CS1
A5
A4
A3
A2
A1
A0
CS2
CE
O7
O6
O5
O4
O3
LCC/PLCC (Opaque Only)
A0
A6
A5
A4
A3
A2
A1
A0
NC
O0
O1
POWER-DOWN
O0
Cypress Semiconductor Corporation
Document #: 38-04008 Rev. *C
O1
O2
GND
NC
O3
O4
O5
CE
(7C271) CS1
(7C271) CS2
(7C274) OE
4 3 2 1 32 31 30
29
5
28
7C271
6
27
7
26
8
25
9
24
10
23
11
22
12
21
13
14151617 181920
•
198 Champion Court
•
28
2
3
4
27
26
25
5
24
6 7C274 23
22
7
21
8
O0
O1
9
10
11
12
O2
13
18
17
16
GND
14
15
20
19
VCC
A14
A13
A8
A9
A11
OE
A10
CE
O7
O6
O5
O4
O3
LCC/PLCC (Opaque Only)
A7
A8
A9
NC
VCC
A10
A11
O2
A1
1
A7
A12
VPP
NC
VCC
A14
A13
A12
1
DIP/Flatpack
VCC
A10
A11
A12
A12
A13
A14
NC
CS1
CS2
CE
O7
O6
A6
A5
A4
A3
A2
A1
A0
NC
O0
4 3 2 1 32 31 30
29
5
28
7C274
6
27
7
26
8
25
9
24
10
23
11
22
12
21
13
14151617 181920
A8
A9
A11
NC
OE
A10
CE
O7
O6
O1
O2
GND
NC
O3
O4
O5
•
•
•
•
San Jose, CA 95134-1709
•
408-943-2600
Revised August 17, 2006
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CY7C271
CY7C274
Selection Guide
Maximum Access Time
Maximum Operating
Current
Com’l
Standby Current
Com’l
7C274-30
7C271-35
7C274-35
7C271-45
7C274-45
7C271-55
Unit
30
35
45
55
ns
120
120
120
120
mA
130
130
130
mA
30
30
30
mA
40
40
40
mA
Military
30
Military
Maximum Ratings[1]
Static Discharge Voltage............................................ >2001V
(per MIL-STD-883, Method 3015)
(Above which the useful life may be impaired. For user guidelines, not tested.)
Latch-Up Current ..................................................... >200 mA
UV Exposure ................................................ 7258 Wsec/cm2
Storage Temperature ..................................... −65°C to +150°C
Ambient Temperature with
Power Applied..................................................−55°C to +125°C
Operating Range
Range
Ambient
Temperature
VCC
Commercial
0°C to +70°C
5V ±10%
−55°C to +125°C
5V ±10%
Supply Voltage to Ground Potential .................−0.5V to +7.0V
DC Voltage Applied to Outputs
in High Z State .....................................................−0.5V to +7.0V
Military[2]
DC Input Voltage .................................................−3.0V to +7.0V
DC Program Voltage .....................................................13.0V
Electrical Characteristics Over the Operating Range[3]
7C271- 35, 45, 55
7C274-30, 35, 45,
Parameter
Description
Test Conditions
VOH
Output HIGH Voltage
VCC = Min., IOH = −2.0 mA
VOL
Output LOW Voltage
VCC = Min., IOL = 8.0 mA[4]
VIH
Input HIGH Level
Guaranteed Input Logical HIGH Voltage for All
Inputs
VIL
Input LOW Level
Guaranteed Input Logical LOW Voltage for All
Inputs
IIX
Input Current
GND < VIN < VCC
IOZ
Output Leakage Current
GND < VOUT < VCC, Output Disabled
VCC = Max., VOUT = GND
Min.
Max.
2.4
Unit
V
0.4
V
VCC
V
0.8
V
−10
+10
µA
−40
+40
µA
−20
2.0
IOS
Output Short Circuit
−90
mA
ICC
Power Supply Current
VCC = Max., VIN = 2.0V,
IOUT = 0 mA, CE=VIL
Commercial
120
mA
Military
130
ISB
Standby Supply Current
VCC = Max., CE = VIH,
IOUT = 0 mA
Commercial
30
VPP
Programming Supply Voltage
IPP
Programming Supply Current
Current[5]
Military
mA
40
12
13
V
50
mA
Notes
1. The voltage on any input or I/O pin cannot exceed the power pin during power-up.
2. TA is the “instant on” case temperature.
3. See the last page of this specification for Group A subgroup testing information.
4. 6.0 mA military
5. For test purposes, not more than one output at a time should be shorted. Short circuit test duration should not exceed 30 seconds.
Document #: 38-04008 Rev. *C
Page 2 of 13
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CY7C271
CY7C274
Electrical Characteristics Over the Operating Range[3]
7C271- 35, 45, 55
7C274-30, 35, 45,
Parameter
Description
Test Conditions
VIHP
Input HIGH Programming
Voltage
VILP
Input LOW Programming
Voltage
Min.
Max.
Unit
3.0
V
0.4
V
Capacitance[6]
Parameter
Description
CIN
Input Capacitance
COUT
Output Capacitance
Test Conditions
TA = 25°C, f = 1 MHz,
VCC = 5.0V
Max.
Unit
10
pF
10
pF
AC Test Loads and Waveforms[6]
R1 500Ω
658Ω MIL
5V
R1 500Ω
658Ω MIL
5V
OUTPUT
30 pF
R2 333Ω
(403Ω MIL)
INCLUDING
JIG AND
SCOPE
5 pF
OUTPUT
R2 333Ω
(403Ω MIL)
90%
10%
GND
≤ 5 ns
90%
10%
≤ 5 ns
INCLUDING
JIG AND
SCOPE
(a) Normal Load
Equivalent to:
ALL INPUT PULSES
3.0V
OUTPUT
(b) High Z Load
THÉVENIN EQUIVALENT
250Ω
200Ω
2.00V COMMERCIAL
OUTPUT
1.90V MILITARY
Note
6. See Introduction to CMOS PROMs for general information on testing.
Document #: 38-04008 Rev. *C
Page 3 of 13
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CY7C271
CY7C274
Switching Characteristics Over the Operating Range[3,6]
7C274-30
Parameter
Description
7C271-35
7C274-35
7C271-45
7C274-45
7C271-55
Min. Max. Min. Max. Min. Max. Min. Max.
Unit
tAA
Address to Output Valid
30
35
45
55
ns
tHZCS
Chip Select Inactive to High Z (CS1 and CS2,
7C271 Only)
20
25
30
30
ns
tACS
Chip Select Active to Output Valid (CS1 and CS2,
7C271 Only)
20
25
30
30
ns
tHZOE
Output Enable Inactive to High Z (OE, 7C274
Only)
20
20
25
25
ns
tOE
Output Enable Active to Output Valid (OE, 7C274
Only)
20
20
25
25
ns
tHZCE
Chip Enable Inactive to High Z (CE Only)
35
40
50
60
ns
tACE
Chip Enable Active to Output Valid (CE Only)
60
ns
tPU
Chip Enable Active to Power Up
tPD
Chip Enable Inactive to Power Down
tOH
Output Hold from Address Change
35
0
40
0
35
0
50
0
40
0
0
50
0
ns
60
0
ns
ns
Switching Waveform
tPU
tPD
VCC
SUPPLY
CURRENT
50%
POWER-DOWN CONTROLLED BY CE
50%
A0 − A14
ADDRESS
CS2
OE, CE, CS1 [7]
tAA
(tHZOE)
tHZCS(E)
tOH
O0 - O7 PREVIOUS DATA VALID
DATA VALID
Erasure Characteristics
Wavelengths of light less than 4000 angstroms begin to erase
the CY7C271 and CY7C274 in the windowed package. For
this reason, an opaque label should be placed over the window
if the PROM is exposed to sunlight or fluorescent lighting for
extended periods of time.
The recommended dose of ultraviolet light for erasure is a
wavelength of 2537 angstroms for a minimum dose (UV
intensity × exposure time) of 25 Wsec/cm2. For an ultraviolet lamp
with a 12 mW/cm2 power rating, the exposure time would be approximately 35 minutes. The CY7C271 or CY7C274 needs to be within 1
inch of the lamp during erasure. Permanent damage may result if the
(tOE)
tACS(E)
HIGH Z
PROM is exposed to high-intensity UV light for an extended period of
time. 7258 Wsec/cm2 is the recommended maximum dosage.
Programming Modes
Programming support is available from Cypress as well as
from a number of third-party software vendors. For detailed
programming information, including a listing of software
packages, please see the PROM Programming Information
located at the end of this section. Programming algorithms can
be obtained from any Cypress representative.
Note
7. CS2 and CS1 are used on the 7C271 only. OE is used on the 7C274 only.
Document #: 38-04008 Rev. *C
Page 4 of 13
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CY7C271
CY7C274
Table 1. CY7C271 Mode Selection
Pin Function[8]
Read or Output Disable
A14–A0
CE
CS2
CS1
O7–O0
Other
A14–A0
VFY
PGM
VPP
D7–D0
Mode
Read
A14–A0
VIL
VIH
VIL
O7–O0
Power Down
A14–A0
VIH
X
X
High Z
Output Disable
A14–A0
X
VIL
X
High Z
Output Disable
A14–A0
X
X
VIH
High Z
Program
A14–A0
VIHP
VILP
VPP
D7–D0
Program Verify
A14–A0
VILP
VIHP/VILP
VPP
O7–O0
Program Inhibit
A14–A0
VIHP
VIHP
VPP
High Z
Blank Check
A14–A0
VILP
VIHP/VILP
VPP
O7–O0
Table 2. CY7C274 Mode Selection
Pin Function[8]
Read or Output Disable
A14–A0
OE
CE
VPP
O7–O0
Other
A14–A0
VFY
PGM
VPP
D7–D0
Mode
Read
A14–A0
VIL
VIL
Note 9
O7–O0
Output Disable
A14–A0
VIH
X
X
High Z
Power Down
A14–A0
X
VIH
X
High Z
Program
A14–A0
VIHP
VILP
VPP
D7–D0
Program Verify
A14–A0
VILP
VIHP/VILP
VPP
O7–O0
Program Inhibit
A14–A0
VIHP
VIHP
VPP
High Z
Blank Check
A14–A0
VILP
VIHP/VILP
VPP
O7–O0
Notes
8. X can be VIL (VILP) or VIH (VIHP).
9. VPP should be tied to VCC ±5% in read mode.
Document #: 38-04008 Rev. *C
Page 5 of 13
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CY7C271
CY7C274
Figure 1. Programming Pinouts
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VCC
A10
A11
A12
A13
A14
VPP
PGM
VFY
D7
D6
D5
D4
D3
A6
A5
A4
A3
A2
A1
A0
NC
D0
Document #: 38-04008 Rev. *C
1
2
3
4
5
7C274
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A12
A13
A14
NC
VPP
PGM
VFY
D7
D6
LCC
Top View
VCC
A14
A13
A8
A9
A11
VFY
A10
PGM
D7
D6
D5
D4
D3
A7
A12
VPP
NC
VCC
A14
A13
DIP
Top View
VPP
A12
A7
A6
A5
A4
A3
A2
A1
A0
D0
D1
D2
GND
4 3 2 1 32 31 30
29
5
28
6
27
7C271
7
26
8
25
9
24
10
23
11
22
12
21
13
14151617 181920
D1
D2
GND
NC
D3
D4
D5
1
2
3
4
5
7C271
6
7
8
9
10
11
12
13
14
A6
A5
A4
A3
A2
A1
A0
NC
D0
4 3 2 1 32 31 30
29
5
28
6
7C274
27
7
26
8
25
9
24
10
23
11
22
12
21
13
14151617 181920
A8
A9
A11
NC
VFY
A10
PGM
D7
D6
D1
D2
GND
NC
D3
D4
D5
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
D0
D1
D2
GND
LCC
Top View
A7
A8
A9
NC
VCC
A10
A11
DIP
Top View
Page 6 of 13
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CY7C271
CY7C274
Typical DC and AC Characteristics
NORMALIZED SUPPLY CURRENT
vs. AMBIENTTEMPERATURE
NORMALIZED SUPPLY CURRENT
vs. SUPPLY VOLTAGE
1.4
1.2
1.0
TA =25°C
f = fMAX
0.6
4.0
4.5
5.0
5.5
1.1
1.0
0.9
0.8
−55
6.0
SUPPLYVOLTAGE (V)
1.6
1.4
1.2
1.0
0.8
0.8
0.6
TA =25°C
0.4
4.0
4.5
5.0
5.5
6.0
SUPPLYVOLTAGE (V)
TYPICAL ACCESS TIME CHANGE
vs. OUTPUT LOADING
40
60
50
40
30
20
30
20
10
VCC =4.5V
TA =25°C
10
0
0
1.0
2.0
3.0
0
4.0
0
OUTPUT VOLTAGE (V)
AMBIENT TEMPERATURE (°C)
OUTPUT SINK CURRENT (mA)
1.0
OUTPUT SOURCE CURRENT
vs. VOLTAGE
125
25
125
DELTA t AA (ns)
OUTPUT SOURCE CURRENT (mA)
NORMALIZED ACCESS TIME
NORMALIZED ACCESS TIME
vs. TEMPERATURE
0.6
−55
25
1.2
AMBIENT TEMPERATURE (°C)
200
400
600
800 1000
CAPACITANCE (pF)
NORMALIZED SUPPLY CURRENT
vs. CYCLE PERIOD
OUTPUT SINK CURRENT
vs. OUTPUT VOLTAGE
175
1.1
150
1.0
NORMALIZED ICC
0.8
NORMALIZED ACCESS TIME
1.2
NORMALIZED ICC
NORMALIZED ICC
1.6
NORMALIZED ACCESS TIME
vs. SUPPLY VOLTAGE
125
100
75
VCC =5.0V
TA =25°C
50
25
0
0.0
1.0
2.0
3.0
OUTPUT VOLTAGE (V)
4.0
0.9
0.8
0.7
0.6
0
50
100
150
200
250
CYCLE PERIOD (ns)
C271-14
Document #: 38-04008 Rev. *C
Page 7 of 13
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CY7C271
CY7C274
Ordering Information
Speed
(ns)
Ordering Code
Package
Name
Operating
Range
Package Type
35
CY7C271-35WMB
W22
28-Lead (300-Mil) Windowed CerDIP
Military
45
CY7C271-45WMB
W22
28-Lead (300-Mil) Windowed CerDIP
Military
CY7C274-45WMB
W16
28-Lead (600-Mil) Windowed CerDIP
CY7C271-55WMB
W22
28-Lead (300-Mil) Windowed CerDIP
55
Military
MILITARY SPECIFICATIONS
Group A Subgroup Testing
DC Characteristics
Switching Characteristics
Parameter
Subgroups
Parameter
Subgroups
VOH
1, 2, 3
tAA
7, 8, 9, 10, 11
VOL
1, 2, 3
tACS[10]
7, 8, 9, 10, 11
VIH
1, 2, 3
tOE[11]
7, 8, 9, 10, 11
VIL
1, 2, 3
tACE
7, 8, 9, 10, 11
IIX
1, 2, 3
IOZ
1, 2, 3
ICC
1, 2, 3
ISB
1, 2, 3
SMD Cross Reference
SMD
Number
Suffix
Cypress
Number
5962-89817
01ZX
CY7C271-55QMB
5962-89817
02XX
CY7C271-45WMB
5962-89817
02ZX
CY7C271-45QMB
Notes
10. 7C271 only (CS1 and CS2).
11. 7C274 only.
Document #: 38-04008 Rev. *C
Page 8 of 13
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CY7C271
CY7C274
Package Diagrams
Figure 2. 28-Lead (300-Mil) PDIP P21
SEE LEAD END OPTION
14
1
DIMENSIONS IN INCHES [MM] MIN.
MAX.
REFERENCE JEDEC MO-095
0.260[6.60]
0.295[7.49]
15
PACKAGE WEIGHT: 2.15 gms
28
0.030[0.76]
0.080[2.03]
SEATING PLANE
1.345[34.16]
1.385[35.18]
0.290[7.36]
0.325[8.25]
0.120[3.05]
0.140[3.55]
0.140[3.55]
0.190[4.82]
0.115[2.92]
0.160[4.06]
0.015[0.38]
0.060[1.52]
0.090[2.28]
0.110[2.79]
0.009[0.23]
0.012[0.30]
0.055[1.39]
0.065[1.65]
0.310[7.87]
0.385[9.78]
0.015[0.38]
0.020[0.50]
LEAD END OPTION
3° MIN.
SEE LEAD END OPTION
51-85014-*D
(LEAD #1, 14, 15 & 28)
Document #: 38-04008 Rev. *C
Page 9 of 13
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CY7C271
CY7C274
Package Diagrams (continued)
Figure 3. 32-Pin Windowed Rectangular Leadless Chip Carrier Q55
MIL-STD-1835 C-12
51-80103-*A
Document #: 38-04008 Rev. *C
Page 10 of 13
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CY7C271
CY7C274
Package Diagrams (continued)
Figure 4. 28-Lead (600-Mil) Windowed CerDIP W16
MIL-STD-1835 D-10 Config. A
51-80020-**
Document #: 38-04008 Rev. *C
Page 11 of 13
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CY7C271
CY7C274
Package Diagrams (continued)
Figure 5. 28-Lead (300-Mil) Windowed CerDIP W22
MIL-STD-1835 D-15 Config. A
51-80087-**
All product and company names mentioned in this document may be the trademarks of their respective holders.
Document #: 38-04008 Rev. *C
Page 12 of 13
© Cypress Semiconductor Corporation, 2006. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use
of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be
used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its
products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. 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.
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CY7C271
CY7C274
Document History Page
Document Title: CY7C271 CY7C274 32K x 8 Power Switched and Reprogrammable PROM
Document Number: 38-04008
REV.
ECN NO.
Issue
Date
Orig. of
Change
Description of Change
**
113864
3/8/02
DSG
Changed from Spec number: 38-00068 to 38-04008
A*
118899
10/10/02
GBI
Updated Ordering Information
*B
122249
12/27/02
RBI
Added power up requirements to Operating Conditions information
*C
499542
See ECN
PCI
Updated Ordering Information
Document #: 38-04008 Rev. *C
Page 13 of 13
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