QP7C271
July 31, 2008
32K x 8 Power-Switched and Reprogrammable PROM
Features
• 5V ±10% VCC, commercial, industrial and military
• Windowed Packages available for re-programmability
• OTP (One-Time-Programmable) Packages available
• High speed
- 25 ns (commercial)
- 35 ns (military)
• CMOS for optimum speed/power
• Slim 300-mil package available
• Direct replacement for Cypress
PROMs
• Direct replacement for bipolar PROMs
• EPROM technology 100%
programmable
• Low power
- 715 mW (military)
- 660 mW (commercial)
• Super Low standby power
- 165 mW when deselected
• TTL-compatible I/O
General Description
The QP7C271 is a high-performance 32,768-word by 8-bit CMOS PROM. When disabled (CE
BAR
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 CS
1 BAR
and CE
BAR
, and an active HIGH
on CS
2
. 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.
2945 Oakmead Village Ct, Santa Clara, CA 95051
•
Phone:
(408) 737-0992
•
Fax:
(408) 736—8708
•
Internet:
www.qpsemi.com
QP7C271
Connection Diagrams
CerDIP/PDIP/Cerpack 28 Lead
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).
LLCC/LCC/PLCC
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051
Page 2 of 9
QP7C271
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
Supply Voltage to Ground
DC Voltage Applied to Outputs in High Z
State
DC Input Voltage
DC Program Voltage
UV Exposure
Storage Temperature
Ambient Temperature with Power Applied
Junction Temperature
Units
-0.5 to 7.0 Volts
-0.5 to 7.0 Volts
-3.0V to 7.0
13.0
7258
-65 to +155
-55 to +125
150
Volts
Volts
W
SEC
/cm
2
ºC
ºC
ºC
Notes
/1
/1
/1
/2
/3 /4
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051
Page 3 of 9
QP7C271
Recommended Operating Conditions
Condition
Supply Voltage Range
Case Operating Range (T
c
)
Case Operating Range (T
c
)
/2
Case Operating Range (T
c
)
/2
Notes:
Apply to Absolute Maximum, Recommended Operating Conditions and Electrical Performance Characteristics.
Units
4.5 to 5.5
-0C to +70
-40C to +85
-55 to +125
Volts DC
ºC
ºC
ºC
Notes
5V ± 10%
Commercial
Industrial
Military
/1 – The Voltage on any input or I/O pin cannot exceed the power pin during power-up.
/2 – T
A
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 T
J
is not to be exceeded.
/5 – V
CC
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
Output Voltage Low
Input High Voltage
Input Low Voltage
Input Load Current
Output Leakage Current
Output Short Circuit Current
/6
Operating Supply Current
Commercial
Military/Industrial
V
OH
V
OL
V
IH
V
IL
I
IX
I
OZ
I
OS
I
CC
V
CC
= 4.5V, I
OH
=-2.0mA
V
CC
= 4.5V, I
OL
=8.0mA
V
CC
= 4.5V, I
OL
=6.0mA
Guaranteed Input logical
High for all inputs
Guaranteed Input logical
Low for all inputs
2.4
0.4
0.4
2.0
V
CC
0.8
-10
-40
-20
10
40
-90
V
V
V
V
V
μA
μA
mA
GND≤V
OUT
≤V
CC
Output Disabled
GND≤V
IN
≤V
CC
V
CC
= 5.5V, V
OUT
=GND
V
CC
= 5.5V, I
OUT
=0 mA,
V
in
= 2.0V, CE
BAR
=V
IL
Commercial
Military/Industrial
120
130
mA
mA
Standby Supply Current
I
SB
V
CC
= 5.5V, I
OUT
=0 mA,
CE
BAR
=V
IH
Commercial
Military/Industrial
30
40
12
13
50
mA
mA
V
mA
Programming Supply Voltage
Programming Supply Current
V
PP
I
PP
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051
Page 4 of 9
QP7C271
TABLE I – ELECTRICAL PERFORMANCE CHARACTERISTICS
Test
Symbol
Conditions /5
Case Operating Range (ºC)
Min
Max
Unit
Input High Programming Voltage
Input Low Programming Voltage
Input Capacitance
Output Capacitance
Address to Output Valid
V
IHP
V
ILP
C
IN
C
OUT
t
AA
T
A
=25ºC, f=1MHz,
V
CC
=5.0V
T
A
=25ºC, f=1MHz,
V
CC
=5.0V
QP7C271 -25
QP7C271 -30
QP7C271 -35
QP7C271 -45
QP7C271 -55
3.0
0.4
10
10
25
30
35
45
55
12
20
25
30
30
12
20
25
30
30
12
35
40
50
60
30
35
40
50
60
0
V
V
pF
pF
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
nS
Chip Select Inactive to High Z
t
HZCS
QP7C271 -25
QP7C271 -30
QP7C271 -35
QP7C271 -45
QP7C271 -55
Chip Select Active to Output
t
ACS
QP7C271 -25
QP7C271 -30
QP7C271 -35
QP7C271 -45
QP7C271 -55
Chip Enable Inactive to High Z
(CE
BAR
Only)
t
HZCE
QP7C271 -25
QP7C271 -30
QP7C271 -35
QP7C271 -45
QP7C271 -55
Chip Enable Active to Output
Valid
(CE
BAR
Only)
t
ACE
QP7C271 -25
QP7C271 -30
QP7C271 -35
QP7C271 -45
QP7C271 -55
Chip Enable Active to Power Up
t
PU
QP SEMI, 2945 Oakmead Village Court, Santa Clara, CA 95051
Page 5 of 9
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