QP7C271
July 31, 2008
2945 Oakmead Village Ct, Santa Clara, CA 95051 • Phone: (408) 737-0992 • Fax: (408) 736—8708 • Internet: www.qpsemi.com
32K x 8 Power-Switched and Reprogrammable PROM
Features
• 5V ±10% VCC, commercial, industrial and military • Direct replacement for Cypress
PROMs
• Windowed Packages available for re-programmability • Direct replacement for bipolar PROMs
• OTP (One-Time-Programmable) Packages available • EPROM technology 100%
programmable
• High speed
- 25 ns (commercial)
- 35 ns (military)
• CMOS for optimum speed/power
• Low power
- 715 mW (military)
- 660 mW (commercial)
• Super Low standby power
- 165 mW when deselected
• Slim 300-mil package available • TTL-compatible I/O
General Description
The QP7C271 is a high-performance 32,768-word by 8-bit CMOS PROM. When disabled (CEBAR HIGH), the
QP7C271 automatically powers down into a low-power stand-by mode. The QP7C271 is packaged in the 300-mil
slim package. The QP7C271 is available in a hermetic package equipped with an erasure window to provide for
re-programmability. 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.
The QP7C271 offers 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 QP7C271 is accomplished by placing active LOW signals on CS1 BAR and CEBAR, and an active HIGH
on CS2. The contents of the memory location addressed by the address lines (A0 − A14) will become available
on the output lines (O0 − O7).
The device is available in windowed hermetic package (Erasable when exposed to UV light) and is also
available in non-windowed OTP (One-Time-Programmable) hermetic or plastic packages.
QP Semiconductor products are not authorized for use in any space applications. The inclusion of QP Semiconductor
products in space applications implies that the space application manufacturer assumes all risk of such use and in doing
so indemnifies QP Semiconductor against all charges.
QP7C271
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 2 of 9
Connection Diagrams
CerDIP/PDIP/Cerpack 28 Lead LLCC/LCC/PLCC
QP7C271
Hermetic Packages available in both
Erasable (Windowed) and OTP –
One-Time-Programmable (Non-
Windowed) versions.
Molded Plastic Packages
(PDIP/PLCC) are only available as
OTP (Non-Windowed).
QP7C271
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 3 of 9
Block Diagram
QP7C271
Absolute Maximum Ratings
Stresses above the AMR may cause permanent damage, extended operation at AMR may degrade performance and affect reliability
Condition Units Notes
Supply Voltage to Ground -0.5 to 7.0 Volts /1
DC Voltage Applied to Outputs in High Z
State
-0.5 to 7.0 Volts /1
DC Input Voltage -3.0V to 7.0 Volts /1
DC Program Voltage 13.0 Volts
UV Exposure 7258 WSEC/cm2
Storage Temperature -65 to +155 ºC
Ambient Temperature with Power Applied -55 to +125 ºC /2
Junction Temperature 150 ºC /3 /4
QP7C271
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 4 of 9
Recommended Operating Conditions
Condition Units Notes
Supply Voltage Range 4.5 to 5.5 Volts DC 5V ± 10%
Case Operating Range (Tc) -0C to +70 ºC Commercial
Case Operating Range (Tc) /2 -40C to +85 ºC Industrial
Case Operating Range (Tc) /2 -55 to +125 ºC Military
Notes:
Apply to Absolute Maximum, Recommended Operating Conditions and Electrical Performance Characteristics.
/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– Applies to all versions, but is critical for molded plastic products. Tj above listed limits can activate
mold compound flame retardant.
/4 – Maximum TJ is not to be exceeded.
/5 – VCC 4.5 to 5.5 Volts
/6 – For Test Purposes, not more than one output at a time should be shorted. Short circuit test duration
should not exceed 30 seconds.
TABLE I – ELECTRICAL PERFORMANCE CHARACTERISTICS
Test Symbol Conditions /5
Case Operating Range (ºC)
Min Max Unit
Output Voltage High VOH V
CC= 4.5V, IOH=-2.0mA 2.4 V
Output Voltage Low Commercial V
OL V
CC= 4.5V, IOL=8.0mA 0.4 V
Military/Industrial V
CC= 4.5V, IOL=6.0mA 0.4 V
Input High Voltage VIH Guaranteed Input logical
High for all inputs 2.0 VCC V
Input Low Voltage VIL Guaranteed Input logical
Low for all inputs 0.8 V
Input Load Current IIX GND≤VOUT≤VCC -10 10 μA
Output Leakage Current IOZ GND≤VIN≤VCC
Output Disabled
-40 40 μA
Output Short Circuit Current /6 I
OS V
CC= 5.5V, VOUT=GND -20 -90 mA
Operating Supply Current ICC VCC= 5.5V, IOUT=0 mA,
Vin = 2.0V, CEBAR=VIL
Commercial 120 mA
Military/Industrial 130 mA
Standby Supply Current ISB VCC= 5.5V, IOUT=0 mA,
CEBAR=VIH
Commercial 30 mA
Military/Industrial 40 mA
Programming Supply Voltage VPP 12 13 V
Programming Supply Current IPP 50 mA
QP7C271
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 5 of 9
TABLE I – ELECTRICAL PERFORMANCE CHARACTERISTICS
Test Symbol Conditions /5
Case Operating Range (ºC)
Min Max Unit
Input High Programming Voltage VIHP 3.0 V
Input Low Programming Voltage VILP 0.4 V
Input Capacitance CIN TA=25ºC, f=1MHz,
VCC=5.0V
10 pF
Output Capacitance COUT TA=25ºC, f=1MHz,
VCC=5.0V
10 pF
Address to Output Valid tAA QP7C271 -25 25 nS
QP7C271 -30 30 nS
QP7C271 -35 35 nS
QP7C271 -45 45 nS
QP7C271 -55 55 nS
Chip Select Inactive to High Z tHZCS QP7C271 -25 12 nS
QP7C271 -30 20 nS
QP7C271 -35 25 nS
QP7C271 -45 30 nS
QP7C271 -55 30 nS
Chip Select Active to Output tACS QP7C271 -25 12 nS
QP7C271 -30 20 nS
QP7C271 -35 25 nS
QP7C271 -45 30 nS
QP7C271 -55 30 nS
Chip Enable Inactive to High Z tHZCE QP7C271 -25 12 nS
(CEBAR Only) QP7C271 -30 35 nS
QP7C271 -35 40 nS
QP7C271 -45 50 nS
QP7C271 -55 60 nS
Chip Enable Active to Output tACE QP7C271 -25 30 nS
Valid (CEBAR Only) QP7C271 -30 35 nS
QP7C271 -35 40 nS
QP7C271 -45 50 nS
QP7C271 -55 60 nS
Chip Enable Active to Power Up tPU 0 nS
QP7C271
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 6 of 9
TABLE I – ELECTRICAL PERFORMANCE CHARACTERISTICS
Test Symbol Conditions /5
Case Operating Range (ºC)
Min Max Unit
Chip Enable Active to Power tPU QP7C271 -25 30 nS
Down QP7C271 -30 35 nS
QP7C271 -35 40 nS
QP7C271 -45 50 nS
QP7C271 -55 60 nS
Output Hold from Address
Change
tOH 0 nS
AC Test Loads
Waveforms
QP7C271
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 7 of 9
Mode Selection Pin Function /7 /8
Read or Output Disable A14-A0 CEBAR CS2 CS1BAR O7-O0
Program A14-A0 VFY PGM VPP D7-D0
Read A14-A0 VIL V
IH V
IL 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 V
ILP VPP D7-D0
Program Verify A14-A0 VILP V
IHP / VILP VPP O7-O0
Program Inhibit A14-A0 VIHP V
IHP VPP High Z
Blank Check A14-A0 VILP V
IHP / VILP VPP O7-O0
/7 – X = “Don’t Care”, but not to exceed VCC +5%
/8 – VPP should be tied to VCC ±5% in read mode.
Erasure Characteristics:
Wavelengths of light less than 4000 Angstroms begin to erase these PROMs. 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 x 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. These PROMs need to
be within 1 inch of the lamp during erasure. Permanent damage may result if the PROM is exposed to
high-intensity UV light for an extended period of time.
7258 Wsec/cm2 is the recommended maximum dosage.
Programming Information:
The QP7C271 programs using the same programming algorithm as Cypress 7C271. A variety of
programming equipment currently supports the Cypress Algorithm. QP Semiconductor has verified
that the devices program on Data I/O Unisite and on a programmer supplied by EETools.
Ordering Information
Temp
Range tAA
ns
Part Number Package Mil-Std-1835 Generic
Commercial 25 QP7C271-25JC 32-Lead PLCC - Commercial
Commercial 25 QP7C271-25PC 28-Lead 300-mil Plastic DIP - Commercial
Commercial 25 QP7C271-25WC 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Commercial
Commercial 30 QP7C271-30JC 32-Lead PLCC - Commercial
Commercial 30 QP7C271-30PC 28-Lead 300-mil Plastic DIP - Commercial
Commercial 30 QP7C271-30WC 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Commercial
Commercial 35 QP7C271-35JC 32-Lead PLCC - Commercial
Commercial 35 QP7C271-35PC 28-Lead 300-mil Plastic DIP - Commercial
Commercial 35 QP7C271-35WC 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Commercial
Commercial 45 QP7C271-45JC 32-Lead PLCC - Commercial
Commercial 45 QP7C271-45PC 28-Lead 300-mil Plastic DIP - Commercial
Commercial 45 QP7C271-45WC 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Commercial
Commercial 55 QP7C271-55JC 32-Lead PLCC - Commercial
Commercial 55 QP7C271-55PC 28-Lead 300-mil Plastic DIP - Commercial
Commercial 55 QP7C271-55WC 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Commercial
Industrial 25 QP7C271-25JI 32-Lead PLCC - Industrial
Industrial 25 QP7C271-25PI 28-Lead 300-mil Plastic DIP - Industrial
Industrial 25 QP7C271-25WI 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Industrial
QP7C271
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 8 of 9
Temp
Range tAA
ns
Part Number Package Mil-Std-1835 Generic
Industrial 30 QP7C271-30JI 32-Lead PLCC - Industrial
Industrial 30 QP7C271-30PI 28-Lead 300-mil Plastic DIP - Industrial
Industrial 30 QP7C271-30WI 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Industrial
Industrial 35 QP7C271-35JI 32-Lead PLCC - Industrial
Industrial 35 QP7C271-35PI 28-Lead 300-mil Plastic DIP - Industrial
Industrial 35 QP7C271-35WI 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Industrial
Industrial 45 QP7C271-45JI 32-Lead PLCC - Industrial
Industrial 45 QP7C271-45PI 28-Lead 300-mil Plastic DIP - Industrial
Industrial 45 QP7C271-45WI 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Industrial
Industrial 55 QP7C271-55JI 32-Lead PLCC - Industrial
Industrial 55 QP7C271-55PI 28-Lead 300-mil Plastic DIP - Industrial
Industrial 55 QP7C271-55WI 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Industrial
Military 35 5962-8981703XA 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Military
Military 35 5962-8981703YA 28-Lead Windowed Flatpack GDFP2-F28 Military
Military 35 5962-8981703ZA 32-Lead Windowed LCC CQCC1-N32 Military
Military 35 5962-9316603MXA 28-Lead 300-mil CerDIP GDIP4-T28 Military
Military 35 5962-9316603MYA 28-Lead Flatpack GDFP2-F28 Military
Military 35 5962-9316603MZA 32-Lead LCC CQCC1-N32 Military
Military 35 QP7C271-35DMB 28-Lead 300-mil CerDIP GDIP4-T28 Military
Military 35 QP7C271-35KMB 28-Lead Flatpack GDFP2-F28 Military
Military 35 QP7C271-35LMB 32-Lead LCC CQCC1-N32 Military
Military 35 QP7C271-35QMB 32-Lead Windowed LCC CQCC1-N32 Military
Military 35 QP7C271-35TMB 28-Lead Windowed Flatpack GDFP2-F28 Military
Military 35 QP7C271-35WMB 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Military
Military 45 5962-8981702XA 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Military
Military 45 5962-8981702YA 28-Lead Windowed Flatpack GDFP2-F28 Military
Military 45 5962-8981702ZA 32-Lead Windowed LCC CQCC1-N32 Military
Military 45 5962-9316602MXA 28-Lead 300-mil CerDIP GDIP4-T28 Military
Military 45 5962-9316602MYA 28-Lead Flatpack GDFP2-F28 Military
Military 45 5962-9316602MZA 32-Lead LCC CQCC1-N32 Military
Military 45 QP7C271-45DMB 28-Lead 300-mil CerDIP GDIP4-T28 Military
Military 45 QP7C271-45KMB 28-Lead Flatpack GDFP2-F28 Military
Military 45 QP7C271-45LMB 32-Lead LCC CQCC1-N32 Military
Military 45 QP7C271-45QMB 32-Lead Windowed LCC CQCC1-N32 Military
Military 45 QP7C271-45TMB 28-Lead Windowed Flatpack GDFP2-F28 Military
Military 45 QP7C271-45WMB 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Military
Military 55 5962-8981701XA 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Military
Military 55 5962-8981701YA 28-Lead Windowed Flatpack GDFP2-F28 Military
Military 55 5962-8981701ZA 32-Lead Windowed LCC CQCC1-N32 Military
Military 55 5962-9316601MXA 28-Lead 300-mil CerDIP GDIP4-T28 Military
Military 55 5962-9316601MYA 28-Lead Flatpack GDFP2-F28 Military
Military 55 5962-9316601MZA 32-Lead LCC CQCC1-N32 Military
Military 55 QP7C271-55DMB 28-Lead 300-mil CerDIP GDIP4-T28 Military
Military 55 QP7C271-55KMB 28-Lead Flatpack GDFP2-F28 Military
Military 55 QP7C271-55LMB 32-Lead LCC CQCC1-N32 Military
Military 55 QP7C271-55QMB 32-Lead Windowed LCC CQCC1-N32 Military
Military 55 QP7C271-55TMB 28-Lead Windowed Flatpack GDFP2-F28 Military
Military 55 QP7C271-55WMB 28-Lead 300-mil Windowed CerDIP GDIP4-T28 Military
* denotes Lead Free Lead Finish
In addition to those products listed above, QP Semiconductor supports Industrial Temperature Range, Source Control Drawing
(SCD), and custom package development for this product family.
QP7C271
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051 Page 9 of 9
Notes:
Package outline information and specifications are defined by Mil-Std-1835 package dimension requ ire ments.
Products manufactured by QP Semiconductor are compliant to the assembly, burn-in, test and quality conformance requirements of
Test Methods 5004 & 5005 of Mil-Std-883 for Class B or Q devices as appropriate. The appropriate DSCC Detail Specifications
define the electrical test requirements for each device.
The listed drawings, Mil-PRF-38535, Mil-Std-88 3 and Mil-Std-1835 are available online at http://www.dscc.dla.mil/
Additional information is available at our website http://www.qpsemi.com
