PAGE 1 OF 16 ATMEL CORPORATION Tel:(408)441-0311 Fax:(408)436-4200 AT-27C256R CMOS EPROM RELIABILITY DATA* * - 200C DATA RETENTION BAKE - 125C DYNAMIC OPERATING LIFE TEST - 125C HIGH TEMPERATURE REVERSE BIAS (HTRB) - TEMPERATURE CYCLE, CENTRIFUGE, FINE AND GROSS LEAK - MECHANICAL SHOCK, VIBRATION VARIABLE FREQUENCY CONSTANT ACCELERATION, FINE AND GROSS LEAK. - TEMPERATURE CYCLING, THERMAL SHOCK, FINE AND GROSS LEAK - INTERNAL WATER-VAPOR CONTENT - PROGRAM ERASE CYCLING - 125C DYNAMIC OPERATING LIFE TEST (PLASTIC) - 150C DATA RETENTION BAKE (PLASTIC) - 15 PSIG PRESSURE POT - 85C, 85% RELATIVE HUMIDITY OPERATING LIFE TEST This report was generated from AT-27C256R reliability testing. This data is applicable to the following device types due to same technology grouping as defined in MIL-M-38535 Appendix A: AT27C512R AT27C010 OCTOBER 2008 2325 Orchard Parkway San Jose CA. 95131 PAGE 2 OF 16 AT-27C256R 125C DYNAMIC OPERATING LIFE TEST LOT NUMBER 284 285 416-3 419 342 8427 83718 87211 90043 902-1-4003 30067 03128-2 04011-3 08732 10486 10296 10193 10161 131132 132270-13 132278-8 133191-5 233051-14 233717-14 233455-9 234937-7 234938-4 2D1006-2 3A0635 A3B1129-2 A3B1297-1 4A0994 4B0691-5 4D2789 5D0110 6A2912-2 6A0734 6A0734-2 DATE CODE 9A8908 9B8923 9D9006 OA9022 0D9045 1A9110 1A9105 1B9120 1B9120 1B9120 1B9121 1C9138 1C9136 1C9136 1C9144 2C9237 2C9242 2C9242 2D9306 3A9308 2D9309 3B9319 3B9333 3B9336 4A9420 4B9432 4D9512 5D9602 6A9626 6A9613 6A9613 SAMPLE SIZE 77 39 27 27 77 77 78 77 78 77 77 77 82 77 80 80 78 78 78 78 78 45 78 58 78 78 80 80 88 84 80 91 80 80 80 254 77 200 TOTAL CKT-HRS(K) 89.3 58.5 27.0 25.0 77.0 77.0 78.0 77.0 78.0 77.0 77.0 77.0 82.0 77.0 80.0 80.0 78.0 78.0 78.0 78.0 78.0 45.0 78.0 58.0 78.0 78.0 80.0 80.0 88.0 84.0 80.0 91.0 80.0 200.0 200.0 254.0 77.0 200.0 NUMBER OF FAILURES 0 0 0 0 0 0 0 0 0 0(AT27C256R) 0(R-CSO) 0(R-CSO) 0(R-CSO) 0 0 0 0 0 0 0(R-CSO) 0(R-CSO) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PAGE 3 OF 16 AT-27C256R 125C DYNAMIC OPERATING LIFE TEST (CONT’) LOT NUMBER DATE CODE 6A2912-1 6A2912A 6A2912AA 6A9628 6A9628 6A9627 SAMPLE SIZE 132 256 256 TOTAL CKT-HRS(K) NUMBER OF FAILURES 132.0 256.0 256.0 0 0 0 FAILURE RATE TOTAL DEVICE HOURS BEST ESTIMATE 2,850,800 DEVICE HOURS = 0.02% PER 1,000 HOURS EXTRAPOLATION TO 50C VIA ARRHENNIUS EQUATION AND ACTIVATION ENERGY OF 0.5eV = 0.001% PER 1,000 HOURS (8 FITS) 50C AMBIENT CONFIDENCE ESTIMATE 60 = 0.001% PER 1,000 HOURS 60% CONFIDENCE (11 FITS) 90 = 0.003% PER 1,000 HOURS 90% CONFIDENCE (27 FITS) AT-27C256R PAGE 4 OF 16 200C DATA RETENTION BAKE LOT NUMBER DATE CODE 284 285 416-3 419 82243 85294 90685 91792 902 30065 10296 10486 10193 10161 132270-13 132278-8 133464-12 233455-9 234937-7 234938-4 2D1006-2 3A0635 A3B1129-2 3B1297-1 4A0994 4B0691-5 4D1701 4D2789 A6B1214-2 A6B1214-1 6A2912-1 8D8848 9A8920 9B8924 9D9006 0A9022 1B9120 1B9120 1B9120 1B9121 1C9136 1C9141 1D9206 2D9242 2D9306 3A9308 3A9309 3B9319 3B9333 3B9336 4A9420 4B9432 4D9606 409512 6B9627 6B9627 6A9628 SAMPLE SIZE 23 23 16 16 80 78 78 80 25 45 80 80 79 77 76 78 78 77 80 77 78 80 80 80 77 77 77 77 264 260 150 TOTAL CKT-HRS(K) 23.0 23.0 16.0 16.0 80.0 78.0 78.0 80.0 25.0 45.0 80.0 80.0 79.0 77.0 76.0 78.0 78.0 77.0 80.0 77.0 78.0 80.0 80.0 80.0 77.0 77.0 77.0 77.0 264.0 260.0 150.0 NUMBER OF FAILURES 0 0 0 0 0 0 0 0 0 0(R-CSO) 0(R-CSO) 0 0 0 0(R-CSO) 0(R-CSO) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 FAILURE RATE TOTAL DEVICE HOURS 1,872,000 DEVICE HOURS BEST ESTIMATE = 0.04% PER 1,000 HOURS 50C AMBIENT EXTRAPOLATION TO 50C VIA ARRHENNIUS EQUATION AND ACTIVATION ENERGY OF 0.5eV = 0.0001% PER 1,000 HOURS (1 FITS) CONFIDENCE ESTIMATE 60 = 0.0002% PER 1,000 HOURS 60% CONFIDENCE (2 FITS) 90 = 0.0005% PER 1,000 HOURS 90% CONFIDENCE (4 FITS) AT-27C256R PAGE 5 OF 16 125C HIGH TEMPERATURE REVERSE BIAS (HTRB) LOT NUMBER SAMPLE SIZE TOTAL CKT-HRS(K) NUMBER OF FAILURES 284 46 49.7 0 285 46 45,250 1(Vcc MARGIN) 416-3 33 33.0 0 419 33 33.0 0 30065 77 77.0 0(R-CSO) 02357 75 75.0 0(R-CSO) FAILURE RATE TOTAL DEVICE HOURS 312,900 DEVICE HOURS BEST ESTIMATE = 0.054% PER 1,000 HOURS 50C AMBIENT EXTRAPOLATION TO 50C VIA ARRHENNIUS EQUATION AND ACTIVATION ENERGY OF 0.5eV = 0.017% PER 1,000 HOURS (166 FITS) CONFIDENCE ESTIMATE 60 = 0.02% PER 60% CONFIDENCE 90 = 0.04% PER 90% CONFIDENCE 1,000 HOURS (200 FITS) 1,000 HOURS (380 FITS) PAGE 6 OF 16 AT-27C256R ENVIRONMENTAL TEST SAMPLE SIZE CONDITIONS TEMPERATURE CYCLING M-S-883 M-1010 COND C TA= -65 TO +150C 10 CYCLES CONSTANT ACCELERATION M-S-883 20 KG's M-2001 COND D Y, ORIENTATION FINE LEAK M-S-883 M-1014 COND B GROSS LEAK M-S-883 M-1014 COND C MECHANICAL SHOC M-S-883 M-2002 COND B VIBRATION VAR FREQUENCY M-S-883 M-2007 COND A CONSTANT ACCELERATION FINE LEAK M-S-883 M-2001 COND E M-S-883 M-1014 COND A1 GROSS LEAK M-S-883 M-1014 COND C1 TEMPERATURE CYCLING M-S-883 M-1010 COND C TA= -65 TO +150C 10 CYCLES THERMAL SHOCK M-S-883 15 CYCLES M-1011 COND B FINE LEAK M-S-883 M-1014 COND A1 GROSS LEAK M-S-883 M-1014 COND C1 INTERNAL WATERVAPOR CONTENT M-S-883 M-1018 280 PPM 260 PPM 190 PPM NUMBER OF FAILURES 30 0 25 0 77 0 3 0 PAGE 7 OF 16 AT-27C256R PROGRAM/ ERASE CYCLING LOT NUMBER DATE CODE SAMPLE SIZE NUMBER OF FAILURES AT CYCLE 10 25 50 902 9D9006 15 0 0 0(R-CSO) 02357 OB9033 80 0 0 0(R-CSO) 08732 1A9105 82 0 0 0 10193 1B9120 79 0 0 0 10161 1B9121 80 0 0 0 132270 1C9136 82 0 0 0(R-CSO) 132278 1C9136 80 0 0 0(R-CSO) 233455-9 2C9242 81 0 0 0 234937-7 2D9306 98 0 0 0 A3B1129-2 3B9333 84 0 0 0 4B0691-5 4B9432 82 0 0 0 4D2789 4D9512 81 0 0 0 PAGE 8 OF 16 AT-27C256R PLASTIC PACKAGE 125C DYNAMIC OPERATING LIFE TEST LOT NUMBER DATE CODE 74003 8B8830 9B8923 9C8952 9D9016 0B9028 1A9112 1C9138 1D9146 1D9146 1D9146 1D9152 1D9203 1D9207 2A9213 2B9227 2D9303 3A9308 3A9309 3A9311 3A9311 3C9341 3D9352 4A9416 4B9431 4B9438 4D9504 5D9551 8A9828 8B0010 0C0042 1A0124 2E0215 5F0521 7G0750 91540 94088 97832 014114 132543 13074 130025 131740 131192 131110 133464 132327 232319 234319AN3 234938 2D1007 2D1006 2D1104 3C0058A 3D0611 4A1307 4B0691 4B2366A 4D1701A 5D0444 8A0291A 8B1179 0C1674-1 1A2208 2E1235 5F0742A-1 7G1561-1 SAMPLE SIZE 20 78 77 39 77 78 49 40 45 34 77 79 80 79 77 77 80 80 77 80 77 77 80 159 80 80 100 250 250 250 250 250 100 100 TOTAL CKT-HRS(K) 20.0 78.0 77.0 39.0 77.0 78.0 49.0 40.0 45.0 34.0 77.0 79.0 80.0 79.0 77.0 77.0 80.0 80.0 77.0 80.0 77.0 77.0 80.0 159.0 80.0 90.0 100.0 250.0 250.0 250.0 250.0 250.0 100.0 100.0 NUMBER OF FAILS 0 0 0 0 0 1(LEAKAGE) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PAGE 9 OF 16 AT-27C256R PLASTIC PACKAGE 125C DYNAMIC OPERATING LIFE TEST LOT NUMBER DATE CODE SAMPLE SIZE TOTAL CKT-HRS(K) NUMBER OF FAILS FAILURE RATE TOTAL DEVICE HOURS 3,500,000 DEVICE HOURS BEST ESTIMATE = 0.02% PER 1,000 HOURS 50C AMBIENT EXTRAPOLATION TO 50C VIA ARRHENNIUS EQUATION AND ACTIVATION ENERGY OF 0.5eV 0.0007% PER 1,000 HOURS (7 FITS) CONFIDENCE ESTIMATE 60 = 0.0009% PER 1,000 HOURS 60% CONFIDENCE (9 FITS) 90 = 0.002% PER 1,000 HOURS 90% CONFIDENCE (22 FITS) PAGE 10 OF 16 AT-27C256R PLASTIC PACKAGE 150C RETENTION BAKE LOT NUMBER DATE CODE PKG TYPE 00301 03155 03128-1 132543 132327 232319 234319 234349BN 234695 234696 234697 234698L 234938 234936 2D1006A 234938 2D1006 2D1104 3C0058A 3D0611 4A0994 4A1272 4B0691 4B0691-3 4B2366A 4D1701 4A0786 5B0675 5D0444 8A0291A 0B1179 0C1674-1 1A2208 2E1234 2E1235 3E0570 4E1206-1 5F0742A-1 7G1561-1 0B9028 0D9045 0D9045 1C9138 2A9213 2B9227 2D9303 2D9303 2D9303 2D9303 2D9303 2D9303 3A9308 3A9309 3A9309 3A9311 3A9311 3A9311 3C9341 3D9352 4A9414 4A9415 4B9431 4B9431 4B9438 4D9504 4A9513 5B9528 5D9550 8A9828 0B0010 0C0042 1A0124 2E0215 2E0215 3E0319 4E0413 5F0521 7G0750 32 32 28 32 32 32 32 32 32 32 32 32 32 32 32 28 28 32 28 32 32 32 32 28 32 32 32 32 32 32 32 32 32 32 32 28 28 32 32 PLCC PLCC PDIP PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC TSOP TSOP PLCC PDIP PLCC PLCC PLCC PLCC TSOP PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC SOIC PLCC PLCC PDIP SAMPLE SIZE 77 50 77 200 77 77 308 154 460 231 462 154 77 76 77 77 78 77 77 77 400 45 192 77 106 80 77 481 279 250 250 250 350 250 250 250 500 50 77 NUMBER OF FAILURES AT INDICATED HOURS (250) (500) (1000) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PAGE 11 OF 16 AT-27C256R PLASTIC PACKAGE 150C RETENTION BAKE LOT NUMBER DATE CODE PKG TYPE SAMPLE SIZE NUMBER OF FAILURES AT INDICATED HOURS (250) (500) (1000) FAILURE RATE TOTAL DEVICE HOURS 8,229,000 DEVICE HOURS BEST ESTIMATE = 0.009% PER 1,000 HOURS 50C AMBIENT EXTRAPOLATION TO 50C VIA ARRHENNIUS EQUATION AND ACTIVATION ENERGY OF 0.5eV = 0.0001% PER 1,000 HOURS (1 FITS) CONFIDENCE ESTIMATE 60 = 0.0002% PER 1,000 HOURS 60% CONFIDENCE (2 FITS) 90 = 0.0004% PER 1,000 HOURS 90% CONFIDENCE (4 FITS) PAGE 12 OF 16 AT-27C256R PLASTIC PACKAGE PRESSURE POT TEST DATE CODE PACKAGE TYPE 8731 8801 8803 8821 8839 8D8903 9A8912 9C8951 0A9018 0A9018 0B9024 0C9035 0B9037 0C9038 0C9043 0D9044 0D9045 0D9045 1A9105 0D9102 1C9135 1C9133 1C9139 1C9141 1D9151 1D9204 1D9203 2A9210 2A9216 2A9219 2B9221 2B9222 2B9226 2B9226 2B9227 2C9234 2B9236 2D9247 2D9247 2D9248 2D9252 2D9303 6A2912A 28 28 32 28 28 28 28 32 28 32 28 28 32 28 32 32 32 28 28 32 28 32 32 32 32 32 28 32 32 32 32 32 32 28 32 32 32 28 28 28 28 32 32 PDIP SOIC PLCC PDIP PDIP PDIP PDIP PLCC PDIP PLCC SOIC SOIC PLCC SOIC PLCC PLCC PLCC PDIP PDIP PLCC PDIP PLCC PLCC PLCC PLCC PLCC PDIP PLCC PLCC PLCC PLCC PLCC PLCC PDIP PLCC PLCC PLCC PDIP SOIC PDIP SOIC PLCC PLCC SAMPLE SIZE 53 41 37 41 42 52 60 15 45 45 45 45 45 45 45 45 45 45 45 45 44 45 45 244 44 45 45 90 45 45 45 90 45 45 90 43 45 45 45 44 44 315 132 NUMBER OF FAILURES AT INDICATES HOURS (24) (48) (72) (96) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PAGE 13 OF 16 AT-27C256R PLASTIC PACKAGE PRESSURE POT TEST (CONT.) DATE CODE PACKAGE TYPE 3A9309 3A9311 3B9321 3B9341 3C9342 4A9414 4B9431 4B9431 5A9513 5B9528 5D9550 6A9613 6A2912A 6A2912AA 6B1194AB 6B1194B A6B1214-2 A6B1214-1 A6B1214-2 6B1194AB 6A2912-2 6A2912-2 6A0734 8A0291A 8B0010 0C0042 1A0124 4E0413 5F0521 7G0750 32 28 28 28 28 32 32 28 32 32 32 32 32 32 32 32 32 32 32 32 28 28 32 32 32 32 28 28 32 32 PLCC TSOP TSOP PDIP PDIP PLCC PLCC TSOP PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC PLCC SOIC SOIC PLCC PLCC PLCC PLCC PDIP PLCC PLCC PLCC SAMPLE SIZE 45 90 45 45 92 08 62 91 77 231 77 201 132 45 132 131 132 132 132 132 77 77 51 99 100 98 100 100 50 77 NUMBER OF FAILURES AT INDICATES HOURS (24) (48) (72) (96) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PAGE 14 OF 16 AT-27C256R PLASTIC PACKAGE 85C/85% RELATIVE HUMIDITY OPERATING LIFE TEST LOT NUMBER DATE CODE PACKAGE TYPE SAMPLE SIZE NUMBER OF FAILURES AT INDICATED HOURS (168) (500) (1000) 8745 28 PDIP 34 0 0 0 9B8923 32 PLCC 49 0 0 0 94088 9D9016 32 PLCC 36 0 0 0 03128-1 0D9045 28 PDIP 45 0 0 0 03155 0D9045 32 PLCC 45 0 0 0 231676 2B9222 32 PLCC 45 0 0 0 2D1006A 3A9309 32 PLCC 45 0 0 0 234938 3A9308 32 PLCC 45 0 0 0 6A2912A 6A9628 32 PLCC 54 0 0 0 PAGE 15 OF 16 Date: October 7, 1994 Subject: AT27C256R (18703A) Latchup Characterization From: May Lai To: G. Korsh, E. Hui, C. Lionbarger, L. Y. Lee Three packaged parts of the AT27C256R (18703A Stepping) from LOT #4B0691 were tested for latchup. A curve tracer was used to force current into each pin and observe the latchup trigger and voltage. A 9 ohm resistor was connected in parallel across the Vcc power supply to allow current to be forced out of the Vcc pin during testing. A separate ammeter was connected in series with the Vcc power supply to verify when latchup occurred. The results are shown in page 2 and indicate that the new AT27C256R (18703A) is quite immune to latchup under normal operating conditions (Vcc = 5.0V, Room Temperature). Inputs can sustain 4.0V with respect to ground and no latchup is observed. No latchup is observed for positive input voltages up to 23V where destructive junction breakdown occurs. Outputs latchup above ±600mA and above 10.0V and -2.7V, except for pin 11 (output 0) which latches at 580mA and 10V. PAGE 16 OF 16 AT27C256R Latchup Trigger Current and Voltage at 5.5V LOT #4B0691 (18703A) Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Function VPP A12 A7 A6 A5 A4 A3 A2 A1 A0 O0 O1 O2 GND O3 O4 O5 O6 O7 CE A10 OE A11 A9 A8 A13 A14 Vcc -V(Volts) -I(mA) 3.4 4.4 4.6 4.65 4.65 4.8 4.7 4.0 4.0 4.0 2.8 2.7 2.75 >600 >600 >600 >600 >600 >600 >600 >600 >600 >600 >600 >600 >600 2.8 2.7 2.75 2.8 2.8 4.1 4.0 4.9 4.9 4.7 4.65 4.6 4.6 >600 >600 >600 >600 >600 >600 >600 >600 >600 >600 >600 >600 >600 +V (Volts) +I(mA) 10 10 10 580 >600 >600 10 10 10.2 10 10.2 >600 >600 >600 >600 >600