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 600-mil 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 Commercial, Industrial and Automotive Temperature Ranges 2-megabit (256K x 8) OTP EPROM Description AT27C020 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 high(continued) performance microprocessor systems. Pin Configurations Function A0 - A17 Addresses O0 - O7 Outputs CE Chip Enable OE Output Enable PGM Program Strobe 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 Pin Name PLCC Top View PDIP Top View VPP A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 O0 O1 O2 GND 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 TSOP Top View Type 1 VCC PGM A17 A14 A13 A8 A9 A11 OE A10 CE 07 06 05 04 03 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 Rev. 0570D–05/00 1 Powered by ICminer.com Electronic-Library Service CopyRight 2003 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 one-time programmable (OTP) plastic PDIP, PLCC and TSOP packages. All devices feature twoline 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 27C020 have 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. Block Diagram 2 AT27C020 Powered by ICminer.com Electronic-Library Service CopyRight 2003 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 nonconformance. At a minimum, a 0.1 µF high-frequency, low inherent inductance, ceramic capacitor should be utilized for each device. This capacitor should be connected between the V CC 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. AT27C020 Absolute Maximum Ratings* *NOTICE: Temperature under Bias ................................ -55°C to +125°C 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. 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) 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. Operating Modes Mode/Pin CE OE PGM (1) Ai VPP Outputs Ai X DOUT Read VIL VIL Output Disable X VIH X X X High-Z VIH X X X X High-Z Rapid Program VIL VIH VIL Ai VPP DIN PGM Verify VIL VIL VIH Ai VPP DOUT PGM Inhibit VIH X X X VPP High-Z X A9 = VH(3) A0 = VIH or VIL A1 - A17 = VIL X Identification Code Standby (2) (4) Product Identification Notes: VIL VIL X 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. 3 Powered by ICminer.com Electronic-Library Service CopyRight 2003 DC and AC Operating Conditions for Read Operation AT27C020 Com. Operating Temperature (Case) Ind. -55 -70 -90 -12 -15 0°C - 70°C 0°C - 70°C 0°C - 70°C 0°C - 70°C 0°C - 70°C -40°C - 85°C -40°C - 85°C -40°C - 85°C -40°C - 85°C -40°C - 85°C -40°C - 125°C -40°C - 125°C -40°C - 125°C 5V ±=10% 5V ±=10% 5V ±=10% Auto. 5V ±=10% VCC Power Supply 5V ±=10% DC and Operating Characteristics for Read Operation Symbol Parameter Condition ILI Input Load Current Output Leakage Current ILO IPP (2) VPP (1) Read/Standby Current Min Max Units VIN = 0V to VCC (Com., Ind.) ±1.0 µA VOUT = 0V to VCC (Com., Ind.) ±5.0 µA VPP = VCC ±10 µA ISB1 (CMOS), CE = VCC=± 0.3V 100 µA ISB2 (TTL), CE = 2.0 to VCC + 0.5V 1.0 mA f = 5 MHz, IOUT = 0 mA, CE = VIL 25 mA ISB VCC(1) Standby Current ICC VCC Active Current 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: 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. AC Characteristics for Read Operation AT27C020 -55 Condition tACC(3) Address to Output Delay CE = OE = VIL 55 70 90 tCE(2) CE to Output Delay OE = VIL 55 70 OE to Output Delay CE = VIL 20 18 tDF(4)(5) OE or CE High to Output Float, whichever occurred first tOH Output Hold from Address, CE or OE,whichever occurred first Note: 4 7 2, 3, 4, 5. See AC Waveforms for Read Operation diagram. AT27C020 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Min 7 Max Min -12 Parameter tOE Max -90 Symbol (2)(3) Min -70 Max Units 120 150 ns 90 120 150 ns 30 35 35 40 ns 20 20 30 40 ns 0 Max Min -15 0 Max Min 0 ns AT27C020 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. Input Test Waveforms and Measurement Levels Output Test Load For -55 devices only: 3.0V AC DRIVING LEVELS 1.5V AC MEASUREMENT LEVEL 0.0V tR, tF < 5 ns (10% to 90%) Note: For -70, -90, -12, -15 devices only: CL = 100 pF including jig capacitance except -55 devices, where CL = 30 pF. tR, tF < 20 ns (10% to 90%) Pin Capacitance f = 1 MHz, T = 25°C(1) Symbol Typ Max Units Conditions CIN 4 8 pF VIN = 0V COUT 8 12 pF VOUT = 0V Note: 1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested. 5 ICminer.com Electronic-Library Service CopyRight 2003 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. 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 6 AT27C020 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Min Max Units ±10 µA -0.6 0.8 V 2.0 VCC + 1.0 V 0.4 V 2.4 CE = PGM = VIL 11.5 V 40 mA 20 mA 12.5 V AT27C020 AC Programming Characteristics TA = 25 ± 5°C, VCC = 6.5 ± 0.25V,VPP = 13.0 ± 0.25V Limits 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 tDFP OE High to Output Float Delay(2) tVPS VPP Setup Time tVCS VCC Setup Time tPW PGM Program Pulse Width(3) tOE Data Valid from OE tPRT VPP Pulse Rise Time During Programming Notes: Test Condition (1) Min Input Rise and Fall Times: (10% to 90%) 20 ns Input Pulse Levels: 0.45V to 2.4V Max 0 Input Timing Reference Level: 0.8V to 2.0V Output Timing Reference Level: 0.8V to 2.0V Units 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%. Atmel’s 27C020 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 7 Powered by ICminer.com Electronic-Library Service CopyRight 2003 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 8 AT27C020 Powered by ICminer.com Electronic-Library Service CopyRight 2003 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. AT27C020 Ordering Information ICC (mA) tACC (ns) Active Standby Ordering Code Package 55 25 0.1 AT27C020-55JC AT27C020-55PC AT27C020-55TC 32J 32P6 32T Commercial (0°C to 70°C) 25 0.1 AT27C020-55JI AT27C020-55PI AT27C020-55TI 32J 32P6 32T Industrial (-40°C to 85°C) 25 0.1 AT27C020-70JC AT27C020-70PC AT27C020-70TC 32J 32P6 32T Commercial (0°C to 70°C) 25 0.1 AT27C020-70JI AT27C020-70PI AT27C020-70TI 32J 32P6 32T Industrial (-40°C to 85°C) 25 0.1 AT27C020-90JC AT27C020-90PC AT27C020-90TC 32J 32P6 32T Commercial (0°C to 70°C) 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) 25 0.1 AT27C020-12JC AT27C020-12PC AT27C020-12TC 32J 32P6 32T Commercial (0°C to 70°C) 25 0.1 AT27C020-12JI AT27C020-12PI AT27C020-12TI 32J 32P6 32T Industrial (-40°C to 85°C) 25 0.1 AT27C020-12JA AT27C020-12PA 32J 32P6 Automotive (-40°C to 125°C) 25 0.1 AT27C020-15JC AT27C020-15PC AT27C020-15TC 32J 32P6 32T Commercial (0°C to 70°C) 25 0.1 AT27C020-15JI AT27C020-15PI AT27C020-15TI 32J 32P6 32T Industrial (-40°C to 85°C) 25 0.1 AT27C020-15JA AT27C020-15PA 32J 32P6 Automotive (-40°C to 125°C) 70 90 120 150 Operation Range 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) 9 Powered by ICminer.com Electronic-Library Service CopyRight 2003 Packaging Information 32J, 32-lead, Plastic J-leaded Chip Carrier (PLCC) Dimensions in Inches and (Millimeters) JEDEC STANDARD MS-016 AE .045(1.14) X 45˚ PIN NO. 1 IDENTIFY .025(.635) X 30˚ - 45˚ .012(.305) .008(.203) .050(1.27) TYP .030(.762) .015(.381) .095(2.41) .060(1.52) .140(3.56) .120(3.05) .300(7.62) REF .430(10.9) .390(9.90) AT CONTACT POINTS .453(11.5) .447(11.4) .495(12.6) .485(12.3) 32T, 32-lead, Plastic Thin Small Outline Package (TSOP) Dimensions in Millimeters and (Inches)* JEDEC OUTLINE MO-142 BD INDEX MARK 7.50(.295) REF 20.2(.795) 19.8(.780) 0.25(.010) 0.15(.006) 8.20(.323) 7.80(.307) 1.20(.047) MAX 0.15(.006) 0.05(.002) 0 5 REF 0.20(.008) 0.10(.004) 0.70(.028) 0.50(.020) *Controlling dimension: millimeters 10 .566(14.4) .530(13.5) AT27C020 Powered by ICminer.com Electronic-Library Service CopyRight 2003 .090(2.29) MAX 1.500(38.10) REF .220(5.59) MAX .005(.127) MIN SEATING PLANE .065(1.65) .015(.381) .022(.559) .014(.356) .161(4.09) .125(3.18) .110(2.79) .090(2.29) .012(.305) .008(.203) 18.5(.728) 18.3(.720) PIN 1 .021(.533) .013(.330) .022(.559) X 45˚ MAX (3X) 0.50(.020) BSC 1.67(42.4) 1.64(41.7) .530(13.5) .490(12.4) .553(14.0) .547(13.9) .595(15.1) .585(14.9) .032(.813) .026(.660) 32P6, 32-lead, 0.600" Wide, Plastic Dual Inline Package (PDIP) Dimensions in Inches and (Millimeters) .065(1.65) .041(1.04) .630(16.0) .590(15.0) 0 REF 15 .690(17.5) .610(15.5) Atmel Headquarters Atmel Operations Corporate Headquarters Atmel Colorado Springs 2325 Orchard Parkway San Jose, CA 95131 TEL (408) 441-0311 FAX (408) 487-2600 Europe 1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 TEL (719) 576-3300 FAX (719) 540-1759 Atmel Rousset Atmel U.K., Ltd. Coliseum Business Centre Riverside Way Camberley, Surrey GU15 3YL England TEL (44) 1276-686-677 FAX (44) 1276-686-697 Zone Industrielle 13106 Rousset Cedex France TEL (33) 4-4253-6000 FAX (33) 4-4253-6001 Asia Atmel Asia, Ltd. Room 1219 Chinachem Golden Plaza 77 Mody Road Tsimhatsui East Kowloon Hong Kong TEL (852) 2721-9778 FAX (852) 2722-1369 Japan Atmel Japan K.K. 9F, Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan TEL (81) 3-3523-3551 FAX (81) 3-3523-7581 Fax-on-Demand North America: 1-(800) 292-8635 International: 1-(408) 441-0732 e-mail [email protected] Web Site http://www.atmel.com BBS 1-(408) 436-4309 © Atmel Corporation 2000. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for use as critical components in life suppor t devices or systems. Marks bearing ® and/or ™ are registered trademarks and trademarks of Atmel Corporation. Terms and product names in this document may be trademarks of others. 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