Atmel AT27C040 4Mb (512K x 8) OTP, EPROM DATASHEET Features Fast read access time – 70ns Low-power CMOS operation 100μA max standby 30mA max active at 5MHz JEDEC standard packages 32-lead PDIP 32-lead PLCC 5V 10% supply High-reliability CMOS technology 2000V ESD protection 200mA latchup immunity Rapid programming algorithm – 100μs/byte (typical) CMOS- and TTL-compatible inputs and outputs Industrial temperature range Green (Pb/halide-free) packaging option 1. Description The Atmel® AT27C040 is a low-power, high-performance, 4,194,304-bit, One-Time Programmable, Read-Only Memory (OTP EPROM) organized as 512K by 8 bits. The AT27C040 requires only one 5V power supply in normal Read mode operation. Any byte can be accessed in less than 70ns, eliminating the need for speed reducing wait states on high-performance microprocessor systems. The Atmel scaled CMOS technology provides low active power consumption and fast programming. Power consumption is typically 8mA in active mode and less than 10μA in standby mode. The AT27C040 is available in a choice of industry standard, JEDEC-approved, PDIP and PLCC packages. The device features two-line control (CE, OE) to eliminate bus contention in high-speed systems. The AT27C040 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 100μs/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. 0189J–EPROM–10/2012 Pin Configurations and Pinouts 30 28 7 27 8 26 9 25 10 24 11 23 12 22 13 21 O1 O2 GND O3 O4 O5 O6 Device Power Supply 31 Output Enable 6 20 OE 29 19 Chip Enable 1 CE 32 Ground 5 18 GND A7 A6 A5 A4 A3 A2 A1 A0 O0 17 Outputs 2 O0 - O7 16 Address Inputs A12 A15 A16 VPP VCC A18 A17 A0 - A18 3 Peak to Peak Voltage 4 VPP 15 Function VCC 32-lead PDIP Top view 32-lead PLCC Top view Pin Name 14 2. 3. A14 A13 A8 A9 A11 OE A10 CE O7 VPP A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 O0 O1 O2 GND 1 32 2 31 3 30 4 29 5 28 6 27 7 26 8 25 9 24 10 23 11 22 12 21 13 20 14 19 15 18 16 17 VCC A18 A17 A14 A13 A8 A9 A11 OE A10 CE O7 O6 O5 O4 O3 Switching Considerations Switching between active and standby conditions via the Chip Enable (CE) 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 0.1μF, high-frequency, 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 4.7μF 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 VCC GND VPP OE CE A0 – A18 Address Inputs Data Outputs O0 – O7 OE, CE, and Program Logic Output Buffers Y Decoder Y-Gating Cell Matrix X Decoder Identification Atmel AT27C040 [DATASHEET] 0189J–EPROM–10/2012 2 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 Voltage on A9 with respect to ground . . . . . . . . . . . . . . . .-2.0V to +14.0V VPP supply voltage with respect to ground. . . . . . . . . . . . . . . . .-2.0V to +14.0V 6. Elelectrical Characteristics 6.1 DC and AC characteristics Table 6-1. *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. Operating modes Mode/Pin CE OE Ai Read VIL VIL Ai X(1) Output Disable X VIH X X High Z Standby VIH X X X High Z Rapid Program(2) VIL VIH Ai VPP DIN PGM Verify X VIL Ai VPP DOUT PGM Inhibit VIH VIH X VPP High Z X Identification Code (4) Product Identification Notes: 1. VIL VIL A9 = VH(3) A0 = VIH or VIL A1 – A18 = VIL VPP Outputs DOUT 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. Atmel AT27C040 [DATASHEET] 0189J–EPROM–10/2012 3 6.2 DC and AC Operating Conditions for Read Operation Atmel AT27C040-70 Atmel AT27C040-90 -40°C to 85°C -40°C to 85°C 5V 10% 5V 10% Industrial Operating Temperature (Case) VCC Power Supply 6.3 DC and Operating Characteristics for Read Operation Symbol Parameter Condition ILI Input Load Current ILO Max Units VIN = 0V to VCC 1 μA Output Leakage Current VOUT = 0V to VCC 5 μA IPP1(2) VPP(1) Read/Standby Current VPP = VCC 10 μA ISB VCC1(1) Standby Current ISB1 (CMOS), CE = VCC 0.3V 100 μA ISB2 (TTL), CE = 2.0 to VCC + 0.5V 1 mA ICC VCC Active Current f = 5MHz, IOUT = 0mA, CE = VIL 30 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 = 2.1mA 0.4 V VOH Output High Voltage IOH = -400μA Notes: 1. 2. 6.4 Min 2.4 V VCC must be applied simultaneously with or before VPP, and removed simultaneously with or after VPP. 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 Atmel AT27C040 -70 Symbol Parameter Condition tACC(1) Address to Output Delay CE = OE = VIL tCE(1) CE to Output Delay tOE(1) OE to Output Delay tDF(1) OE or CE High to Output Float; whichever occurred first. tOH Output Hold from Address, CE or OE; whichever occurred first. Note: 1. Min -90 Max Units 70 90 ns OE = VIL 70 90 ns CE = VIL 30 35 ns 20 20 ns 0 Max Min 0 ns See AC waveforms for read operation. Atmel AT27C040 [DATASHEET] 0189J–EPROM–10/2012 4 Figure 6-1. AC Waveforms for Read Operation(1) Address Valid Address CE tCE tOE OE tDF tACC tOH High Z Output Valid Output 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. Figure 6-2. Input Test Waveforms and Measurement Levels 2.40V 2.00 AC Driving Levels 0.80 AC Measurement Level 0.45V Figure 6-3. Output Test Load 1.3V (1N914) 3.3K OUTPUT PIN CL Table 6-2. Pin Capacitance f = 1MHz, 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. Atmel AT27C040 [DATASHEET] 0189J–EPROM–10/2012 5 Figure 6-4. Programming Waveforms(1) Read (Verify) Program Address VIH Address Stable VIL tAS Data VIH Data Out Valid Data In VIL tAH tOE tDS tDH tDFP 13.0V VPP 5.0V tPRT VCC tVPS 6.5V 5.0V tVCS CE VIH VIL tPW OE tOES VIH VIL 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 AT27C040, a 0.1μF capacitor is required across VPP and ground to suppress spurious voltage transients. Table 6-3. 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 = 2.1mA VOH Output High Voltage IOH = -400μA 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 + 0.7 V 0.4 V 2.4 CE = VIL 11.5 V 40 mA 20 mA 12.5 V Atmel AT27C040 [DATASHEET] 0189J–EPROM–10/2012 6 Table 6-4. AC Programming Characteristics TA = 25 5°C, VCC = 6.5 0.25V, VPP = 13.0 0.25V Limits Test Conditions(1) Symbol Parameter tAS Address Setup Time tOES OE Setup Time tDS Data Setup Time tAH Address Hold Time Input rise and fall times: (10% to 90%) 20ns Input pulse levels: tDH Data Hold Time tDFP OE High to Output Float Delay(2) tVPS Vpp Setup Time 0.45V to 2.4V 0.8V to 2.0V Vcc Setup Time tPW CE Program Pulse Width(3) tOE Data Valid from OE(2) tPRT VPP Pulse Rise Time During Programming Max Output timing reference level: Units 2 μs 2 μs 2 μs 0 μs 2 μs 0 Input timing reference level: tVCS Notes: 1. Min 130 ns 2 μs 2 μs 95 0.8V to 2.0V 105 μs 150 ns 50 ns VCC must be applied simultaneously with or before VPP and removed simultaneously with 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 100μs 5%. Table 6-5. Atmel AT27C040 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 0 0 0 0 1 0 1 1 0B Atmel AT27C040 [DATASHEET] 0189J–EPROM–10/2012 7 7. Rapid programming algorithm A 100μs CE 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 100μs CE pulse without verification. Then a verification/reprogramming loop is executed for each address. In the event a byte fails to pass verification, up to ten successive 100μs pulses are applied with a verification after each pulse. If the byte fails to verify after ten 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. Figure 7-1. Rapid Programming Algorithm Start ADDR = First Location VCC = 6.5V VPP = 13.0V Program One 100μs Pulse Increment Address No Last ADDR? Yes ADDR = First Location Increment Address X=0 No Last ADDR? Pass Verify Byte Fail Increment Yes No Program One 100μs Pulse X = 10? Yes VCC = 6.5V VPP = 13.0V Compare All Bytes to Original Data Fail Device Failed Pass Device Passed Atmel AT27C040 [DATASHEET] 0189J–EPROM–10/2012 8 8. Ordering Information Green Package Option (Pb/Halide-free) ICC (mA) Atmel Ordering Code Package AT27C040-70JU 32J AT27C040-70PU 32P6 AT27C040-90JU 32J AT27C040-90PU 32P6 tACC (ns) Active Standby Lead Finish Operation Range 70 30 0.1 Matte Tin Industrial (-40C to 85C) 90 30 0.1 Matte Tin Industrial (-40C to 85C) Package Type 32J 32P6 32-lead, plastic, J-leaded Chip Carrier (PLCC) 32-lead, 0.600" wide, plastic, Dual Inline (PDIP) Atmel AT27C040 [DATASHEET] 0189J–EPROM–10/2012 9 9. Package information 9.1 32J — 32-lead 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 B E2 B1 E 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"(0.254mm) 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" (0.10mm) 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 Package Drawing Contact: [email protected] TITLE 32J, 32-lead, Plastic J-leaded Chip Carrier (PLCC) DRAWING NO. 32J Atmel AT27C040 [DATASHEET] 0189J–EPROM–10/2012 REV. B 10 32P6 — 32-lead PDIP 17 32 E1 1 16 D e A BASE PLANE -CSEATING PLANE A1 L b2 .015 b j E GAGE PLANE 0.10 m C See Lead Detail Z Z 9.2 COMMON DIMENSIONS (UNIT OF MEASURE=MM) C L eC Lead Detail eA eB Notes: 1. Dimensions D and E1 do not include mold Flash or Protrusion. Mold Flash or Protrusion shall not exceed 0.25 mm (0.010"). c Symbol A A1 Min. 0.381 Nom. - Max. 4.826 - b 0.356 - 0.558 b2 c D E 1.041 0.203 41.783 15.240 - 1.651 0.381 42.291 15.875 E1 13.462 - 13.970 L e eA eB 3.048 3.556 - 2.54 BSC 15.24 BSC - 17.78 eC 0.000 - 1.524 Note Note 1 Note 1 11/28/11 Package Drawing Contact: [email protected] TITLE 32P6, 32-lead, 0.600”/15.24 mm Wide Plastic Dual Inline Package (PDIP) GPC DRAWING NO. REV. PLU 32P6 C Atmel AT27C040 [DATASHEET] 0189J–EPROM–10/2012 11 10. Revision History Doc. Rev. Date 0189J 10/2012 0189I 04/2011 0189H 12/2007 Comments Update 32P6 package outline drawing. Update template and Atmel logo. Remove TSOP package. Add lead finish to ordering information. Datasheet revision. Atmel AT27C040 [DATASHEET] 0189J–EPROM–10/2012 12 Atmel Corporation 1600 Technology Drive Atmel Asia Limited Unit 01-5 & 16, 19F Atmel Munich GmbH Business Campus Atmel Japan G.K. 16F Shin-Osaki Kangyo Bldg San Jose, CA 95110 BEA Tower, Millennium City 5 Parkring 4 1-6-4 Osaki, Shinagawa-ku USA 418 Kwun Tong Roa D-85748 Garching b. Munich Tokyo 141-0032 Tel: (+1) (408) 441-0311 Kwun Tong, Kowloon GERMANY JAPAN Fax: (+1) (408) 487-2600 HONG KONG Tel: (+49) 89-31970-0 Tel: (+81) (3) 6417-0300 www.atmel.com Tel: (+852) 2245-6100 Fax: (+49) 89-3194621 Fax: (+81) (3) 6417-0370 Fax: (+852) 2722-1369 © 2012 Atmel Corporation. All rights reserved. / Rev.: 0189J–EPROM–10/2012 Atmel®, logo and combinations thereof, and others are registered trademarks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Disclaimer: The information in this document is provided in connection with Atmel products. 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