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 [+] Feedback 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 [+] Feedback 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 [+] Feedback 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 [+] Feedback 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 [+] Feedback 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 [+] Feedback 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 [+] Feedback 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 [+] Feedback 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 [+] Feedback 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 [+] Feedback 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 [+] Feedback 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. [+] Feedback 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 [+] Feedback