Features • Fast Read Access Time – 55 ns • Low-power CMOS Operation • • • • • • • • – 100 µA Max Standby – 25 mA Max Active at 5 MHz JEDEC Standard Packages – 32-lead PDIP – 32-lead PLCC – 32-lead TSOP 5V ± 10% Supply High-reliability CMOS Technology – 2,000V ESD Protection – 200 mA Latch-up Immunity Rapid Programming Algorithm – 100 µs/Byte (Typical) CMOS- and TTL-compatible Inputs and Outputs Integrated Product Identification Code Industrial and Automotive Temperature Ranges Green (Pb/Halide-free) Packaging Option 2-megabit (256K x 8) OTP EPROM AT27C020 1. Description The AT27C020 is a low-power, high-performance, 2,097,152-bit, one-time programmable read-only memory (OTP EPROM) organized as 256K by 8 bits. It requires only one 5V power supply in normal read mode operation. Any byte can be accessed in less than 55 ns, eliminating the need for speed-reducing WAIT states on highperformance microprocessor systems. In read mode, the AT27C020 typically consumes 8 mA. Standby mode supply current is typically less than 10 µA. The AT27C020 is available in a choice of industry-standard JEDEC-approved onetime programmable (OTP) plastic PDIP, PLCC and TSOP packages. All devices feature two-line control (CE, OE) to give designers the flexibility to prevent bus contention. With 256K bytes storage capability, the AT27C020 allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media. Atmel’s AT27C020 has additional features to ensure high quality and efficient production use. The Rapid Programming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 100 µs/byte. The Integrated Product Identification Code electronically identifies the device and manufacturer. This feature is used by industry-standard programming equipment to select the proper programming algorithms and voltages. 0570G–EPROM–12/07 2. Pin Configurations Pin Name Function A0 - A17 Addresses O0 - O7 Outputs CE Chip Enable OE Output Enable PGM Program Strobe 32-lead PLCC Top View 2.3 29 28 27 26 25 24 23 22 21 14 15 16 17 18 19 20 5 6 7 8 9 10 11 12 13 A14 A13 A8 A9 A11 OE A10 CE 07 01 02 GND 03 04 05 06 A7 A6 A5 A4 A3 A2 A1 A0 O0 4 3 2 1 32 31 30 A12 A15 A16 VPP VCC PGM A17 2.1 2.2 A11 A9 A8 A13 A14 A17 PGM VCC VPP A16 A15 A12 A7 A6 A5 A4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 OE A10 CE 07 06 05 04 03 GND 02 01 O0 A0 A1 A2 A3 32-lead PDIP Top View VPP A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 O0 O1 O2 GND 2 32-lead TSOP (Type 1) Top View 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 VCC PGM A17 A14 A13 A8 A9 A11 OE A10 CE 07 06 05 04 03 AT27C020 0570G–EPROM–12/07 AT27C020 3. System Considerations Switching between active and standby conditions via the Chip Enable pin may produce transient voltage excursions. Unless accommodated by the system design, these transients may exceed datasheet limits, resulting in device non-conformance. At a minimum, a 0.1 µF highfrequency, low inherent inductance, ceramic capacitor should be utilized for each device. This capacitor should be connected between the VCC and Ground terminals of the device, as close to the device as possible. Additionally, to stabilize the supply-voltage level on printed circuit boards with large EPROM arrays, a 4.7 µF bulk electrolytic capacitor should be utilized, again connected between the VCC and Ground terminals. This capacitor should be positioned as close as possible to the point where the power supply is connected to the array. 4. Block Diagram 5. Absolute Maximum Ratings* Temperature under Bias ................................ -55°C to +125°C Storage Temperature ..................................... -65°C to +150°C Voltage on Any Pin with Respect to Ground .........................................-2.0V to +7.0V(1) Voltage on A9 with Respect to Ground ......................................-2.0V to +14.0V(1) *NOTICE: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. VPP Supply Voltage with Respect to Ground .......................................-2.0V to +14.0V(1) Note: 1. Minimum voltage is -0.6V DC, which may undershoot to -2.0V for pulses of less than 20 ns. Maximum output pin voltage is VCC + 0.75V DC, which may overshoot to +7.0V for pulses of less than 20 ns. 3 0570G–EPROM–12/07 6. Operating Modes Mode/Pin CE OE PGM Ai VPP Outputs Read VIL VIL X(1) Ai X DOUT Output Disable X VIH X X X High-Z Standby VIH X X X X High-Z Rapid Program(2) VIL VIH VIL Ai VPP DIN PGM Verify VIL VIL VIH Ai VPP DOUT PGM Inhibit VIH X X X VPP High-Z X Identification Code VH(3) Product Identification(4) Notes: VIL VIL X A9 = A0 = VIH or VIL A1 - A17 = VIL 1. X can be VIL or VIH. 2. Refer to Programming Characteristics. 3. VH = 12.0 ± 0.5V. 4. Two identifier bytes may be selected. All Ai inputs are held low (VIL) except A9, which is set to VH and A0, which is toggled low (VIL) to select the Manufacturer’s Identification byte and high (VIH) to select the Device Code byte. 7. DC and AC Operating Conditions for Read Operation AT27C020 Ind. -55 -90 -40° C - 85° C -40° C - 85° C Operating Temperature (Case) Auto. -40° C - 125° C 5V ± 10% VCC Power Supply 5V ± 10% 8. DC and Operating Characteristics for Read Operation Symbol Parameter Condition ILI Input Load Current ILO Max Units VIN = 0V to VCC (Com., Ind.) ±1.0 µA Output Leakage Current VOUT = 0V to VCC (Com., Ind.) ±5.0 µA IPP(2) VPP(1) Read/Standby Current VPP = VCC ±10 µA VCC(1) Standby Current ISB1 (CMOS), CE = VCC ± 0.3V 100 µA ISB ISB2 (TTL), CE = 2.0 to VCC + 0.5V 1.0 mA ICC VCC Active Current f = 5 MHz, IOUT = 0 mA, CE = VIL 25 mA VIL Input Low Voltage -0.6 0.8 V VIH Input High Voltage 2.0 VCC + 0.5 V VOL Output Low Voltage IOL = 2.1 mA 0.4 V VOH Output High Voltage IOH = -400 µA Notes: Min 2.4 V 1. VCC must be applied simultaneously or before VPP, and removed simultaneously or after VPP. 2. VPP may be connected directly to VCC except during programming. The supply current would then be the sum of ICC and IPP. 4 AT27C020 0570G–EPROM–12/07 AT27C020 9. AC Characteristics for Read Operation AT27C020 -55 Symbol Parameter Condition tACC(3) Address to Output Delay CE = OE = VIL tCE(2) CE to Output Delay tOE(2)(3) OE to Output Delay tDF(4)(5) OE or CE High to Output Float, Whichever Occurred First tOH Output Hold from Address, CE or OE, Whichever Occurred First Min -90 Max Max Units 55 90 ns OE = VIL 55 90 ns CE = VIL 20 35 ns 18 20 ns 7 Min 0 ns 10. AC Waveforms for Read Operation(1) Notes: 1. Timing measurement references are 0.8V and 2.0V. Input AC drive levels are 0.45V and 2.4V, unless otherwise specified. 2. OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE. 3. OE may be delayed up to tACC - tOE after the address is valid without impact on tACC. 4. This parameter is only sampled and is not 100% tested. 5. Output float is defined as the point when data is no longer driven. 5 0570G–EPROM–12/07 11. Input Test Waveforms and Measurement Levels For -55 devices only: 3.0V AC DRIVING LEVELS 1.5V AC MEASUREMENT LEVEL 0.0V tR, tF < 5 ns (10% to 90%) For -90 devices only: tR, tF < 20 ns (10% to 90%) 12. Output Test Load Note: CL = 100 pF including jig capacitance except -55 devices, where CL = 30 pF. 13. Pin Capacitance f = 1 MHz, T = 25° C(1) Symbol CIN COUT Note: 6 Typ Max Units Conditions 4 8 pF VIN = 0V 8 12 pF VOUT = 0V 1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested. AT27C020 0570G–EPROM–12/07 AT27C020 14. Programming Waveforms (1) Notes: 1. The Input Timing reference is 0.8V for VIL and 2.0V for VIH. 2. tOE and tDFP are characteristics of the device but must be accommodated by the programmer. 3. When programming the AT27C020, a 0.1 µF capacitor is required across VPP and ground to suppress voltage transients. 7 0570G–EPROM–12/07 15. DC Programming Characteristics TA = 25 ± 5°C, VCC = 6.5 ± 0.25V, VPP = 13.0 ± 0.25V Limits Symbol Parameter Test Conditions ILI Input Load Current VIN = VIL, VIH VIL Input Low Level VIH Input High Level VOL Output Low Voltage IOL = 2.1 mA VOH Output High Voltage IOH = -400 µA ICC2 VCC Supply Current (Program and Verify) IPP2 VPP Supply Current VID A9 Product Identification Voltage Min Max Units ±10 µA -0.6 0.8 V 2.0 VCC + 1.0 V 0.4 V 2.4 V CE = PGM = VIL 11.5 40 mA 20 mA 12.5 V Max Units 16. AC Programming Characteristics TA = 25 ± 5°C, VCC = 6.5 ± 0.25V,VPP = 13.0 ± 0.25V Limits Test Condition (1) Symbol Parameter tAS Address Setup Time 2 µs tCES CE Setup Time 2 µs tOES OE Setup Time 2 µs tDS Data Setup Time 2 µs tAH Address Hold Time 0 µs tDH Data Hold Time 2 µs Input Rise and Fall Times: (10% to 90%) 20 ns Input Pulse Levels: 0.45V to 2.4V (2) tDFP OE High to Output Float Delay tVPS VPP Setup Time tVCS VCC Setup Time 0 Input Timing Reference Level: 0.8V to 2.0V Output Timing Reference Level: 0.8V to 2.0V (3) tPW PGM Program Pulse Width tOE Data Valid from OE tPRT VPP Pulse Rise Time During Programming Notes: Min 130 ns 2 µs 2 µs 95 105 µs 150 ns 50 ns 1. VCC must be applied simultaneously or before VPP and removed simultaneously or after VPP. 2. This parameter is only sampled and is not 100% tested. Output Float is defined as the point where data is no longer driven – see timing diagram. 3. Program Pulse width tolerance is 100 µs ± 5%. 17. Atmel’s AT27C020 Integrated Product Identification Code Pins Codes A0 O7 O6 O5 O4 O3 O2 O1 O0 Hex Data Manufacturer 0 0 0 0 1 1 1 1 0 1E Device Type 1 1 0 0 0 0 1 1 0 86 8 AT27C020 0570G–EPROM–12/07 AT27C020 18. Rapid Programming Algorithm A 100 µs PGM pulse width is used to program. The address is set to the first location. VCC is raised to 6.5V and VPP is raised to 13.0V. Each address is first programmed with one 100 µs PGM pulse without verification. Then a verification/reprogramming loop is executed for each address. In the event a byte fails to pass verification, up to 10 successive 100 µs pulses are applied with a verification after each pulse. If the byte fails to verify after 10 pulses have been applied, the part is considered failed. After the byte verifies properly, the next address is selected until all have been checked. VPP is then lowered to 5.0V and VCC to 5.0V. All bytes are read again and compared with the original data to determine if the device passes or fails. 9 0570G–EPROM–12/07 19. Ordering Information 19.1 Standard Package ICC (mA) tACC (ns) Active Standby Ordering Code Package 55 25 0.1 AT27C020-55JI AT27C020-55PI AT27C020-55TI 32J 32P6 32T Industrial (-40° C to 85° C) 90 25 0.1 AT27C020-90JI AT27C020-90PI AT27C020-90TI 32J 32P6 32T Industrial (-40° C to 85° C) 25 0.1 AT27C020-90JA AT27C020-90PA 32J 32P6 Automotive (-40° C to 125° C) Operation Range Note: 19.2 Operation Range Not recommended for new designs. Use Green package option. Green Package (Pb/Halide-free) ICC (mA) tACC (ns) Active Standby Ordering Code Package 55 25 0.1 AT27C020-55JU AT27C020-55PU AT27C020-55TU 32J 32P6 32T Industrial (-40° C to 85° C) 90 25 0.1 AT27C020-90JU AT27C020-90PU AT27C020-90TU 32J 32P6 32T Industrial (-40° C to 85° C) Package Type 32J 32-lead, Plastic J-leaded Chip Carrier (PLCC) 32P6 32-lead, 0.600" Wide, Plastic Dual Inline Package (PDIP) 32T 32-lead, Plastic Thin Small Outline Package (TSOP) 10 AT27C020 0570G–EPROM–12/07 AT27C020 20. Packaging Information 20.1 32J – PLCC 1.14(0.045) X 45˚ PIN NO. 1 IDENTIFIER 1.14(0.045) X 45˚ 0.318(0.0125) 0.191(0.0075) E1 E2 B1 E B e A2 D1 A1 D A 0.51(0.020)MAX 45˚ MAX (3X) COMMON DIMENSIONS (Unit of Measure = mm) D2 Notes: 1. This package conforms to JEDEC reference MS-016, Variation AE. 2. Dimensions D1 and E1 do not include mold protrusion. Allowable protrusion is .010"(0.254 mm) per side. Dimension D1 and E1 include mold mismatch and are measured at the extreme material condition at the upper or lower parting line. 3. Lead coplanarity is 0.004" (0.102 mm) maximum. SYMBOL MIN NOM MAX A 3.175 – 3.556 A1 1.524 – 2.413 A2 0.381 – – D 12.319 – 12.573 D1 11.354 – 11.506 D2 9.906 – 10.922 E 14.859 – 15.113 E1 13.894 – 14.046 E2 12.471 – 13.487 B 0.660 – 0.813 B1 0.330 – 0.533 e NOTE Note 2 Note 2 1.270 TYP 10/04/01 R 2325 Orchard Parkway San Jose, CA 95131 TITLE 32J, 32-lead, Plastic J-leaded Chip Carrier (PLCC) DRAWING NO. REV. 32J B 11 0570G–EPROM–12/07 20.2 32P6 – PDIP D PIN 1 E1 A SEATING PLANE A1 L B B1 e E 0º ~ 15º C COMMON DIMENSIONS (Unit of Measure = mm) REF MIN NOM MAX A – – 4.826 A1 0.381 – – D 41.783 – 42.291 E 15.240 – 15.875 E1 13.462 – 13.970 B 0.356 – 0.559 B1 1.041 – 1.651 L 3.048 – 3.556 C 0.203 – 0.381 eB 15.494 – 17.526 SYMBOL eB Note: 1. Dimensions D and E1 do not include mold Flash or Protrusion. Mold Flash or Protrusion shall not exceed 0.25 mm (0.010"). e NOTE Note 1 Note 1 2.540 TYP 09/28/01 R 12 2325 Orchard Parkway San Jose, CA 95131 TITLE 32P6, 32-lead (0.600"/15.24 mm Wide) Plastic Dual Inline Package (PDIP) DRAWING NO. 32P6 REV. B AT27C020 0570G–EPROM–12/07 AT27C020 20.3 32T – TSOP PIN 1 0º ~ 8º c Pin 1 Identifier D1 D L b e L1 A2 E A GAGE PLANE SEATING PLANE COMMON DIMENSIONS (Unit of Measure = mm) A1 MIN NOM MAX A – – 1.20 A1 0.05 – 0.15 A2 0.95 1.00 1.05 D 19.80 20.00 20.20 D1 18.30 18.40 18.50 Note 2 E 7.90 8.00 8.10 Note 2 L 0.50 0.60 0.70 SYMBOL Notes: 1. This package conforms to JEDEC reference MO-142, Variation BD. 2. Dimensions D1 and E do not include mold protrusion. Allowable protrusion on E is 0.15 mm per side and on D1 is 0.25 mm per side. 3. Lead coplanarity is 0.10 mm maximum. L1 0.25 BASIC b 0.17 0.22 0.27 c 0.10 – 0.21 e NOTE 0.50 BASIC 10/18/01 R 2325 Orchard Parkway San Jose, CA 95131 TITLE 32T, 32-lead (8 x 20 mm Package) Plastic Thin Small Outline Package, Type I (TSOP) DRAWING NO. REV. 32T B 13 0570G–EPROM–12/07 Headquarters International Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Atmel Asia Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369 Atmel Europe Le Krebs 8, Rue Jean-Pierre Timbaud BP 309 78054 Saint-Quentin-enYvelines Cedex France Tel: (33) 1-30-60-70-00 Fax: (33) 1-30-60-71-11 Atmel Japan 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581 Technical Support [email protected] Sales Contact www.atmel.com/contacts Product Contact Web Site www.atmel.com Literature Requests www.atmel.com/literature Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. 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