8Mb (1M x 8) One-time Programmable, Read-only Memory
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1 Features Fast read access time 90ns Low-power CMOS operation 100µA max standby 40mA max active at 5MHz JEDEC standard packages 32-lead PLCC 32-lead PDIP 5V 10% supply High-reliability CMOS technology 2,000V ESD protection 200mA latchup immunity Rapid programming algorithm 50µs/byte (typical) CMOS- and TTL-compatible inputs and outputs Integrated product identification code Industrial temperature range Green (Pb/halide-free) packaging option 8Mb (1M x 8) One-time Programmable, Read-only Memory Atmel AT27C Description The Atmel AT27C080 is a low-power, high-performance 8,388,608-bit, one-time programmable, read-only memory (OTP EPROM) organized as 1M by 8 bits. The AT27C080 requires only one 5V power supply in normal read mode operation. Any byte can be accessed in less than 90ns, eliminating the need for speed reducing WAIT states on highperformance microprocessor systems. The Atmel scaled CMOS technology provides low active power consumption and fast programming. Power consumption is typically 10mA in active mode and less than 10µA in standby mode. The AT27C080 is available in a choice of industry standard, JEDEC-approved, one-time programmable (OTP) PLCC and PDIP packages. All devices feature two-line control (CE, OE) to give designers the flexibility to prevent bus contention. With high-density, 8Mb storage capability, the AT27C080 allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media. The AT27C080 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 50µs/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.
2 2. Pin configurations Pin name A0 - A19 Function Addresses 32-lead PLCC Top view 32-lead PDIP Top view O0 - O7 CE OE/VPP Outputs Chip enable Output enable/program supply A7 A6 A5 A4 A3 A2 A1 A0 O A12 A15 A16 VPP VCC A18 A GND A14 A13 A8 A9 A11 OE A10 CE 07 VPP A16 A15 A12 A7 A6 A5 A4 A3 A2 A1 A0 O0 O1 O2 GND VCC A18 A17 A14 A13 A8 A9 A11 OE A10 CE 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 0.1µF, 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 4.7µF bulk electrolytic capacitor should be utilized, again connected between the V CC and ground terminals. This capacitor should be positioned as close as possible to the point where the power supply is connected to the array. Figure 3-1. Block diagram 2 Atmel AT27C080
3 Atmel AT27C Absolute maximum ratings* Temperature under bias C to +125 C *NOTICE: Stresses beyond those listed under Absolute maximum ratings may cause permanent damage to Storage temperature C to +150 C Voltage on any pin with respect to ground V to +7.0V (1) Voltage on A9 with respect to ground V to +14.0V (1) V PP supply voltage with respect to ground V to +14.0V (1) Integrated UV erase dose W s/cm 2 Note: 1. Minimum voltage is -0.6V DC, which may undershoot to -2.0V for pulses of less than 20ns. Maximum output pin voltage is V CC V DC, which may overshoot to +7.0V for pulses of less than 20ns. 5. DC and AC characteristics 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. Table 5-1. Operating modes Mode/Pin CE OE/V PP Ai Outputs Read V IL V IL Ai D OUT Output disable X V IH X (1) High Z Standby V IH X X High Z Rapid program (2) V IL V PP Ai D IN PGM verify V IL V IL Ai D OUT PGM inhibit V IH V PP X High Z Product identification (4) V IL V IL A0 = V IH or V IL (3) A9 = V H A1 - A19 = V IL Identification code Notes: 1. X can be V IL or V IH. 2. Refer to programming characteristics. 3. V H = 12.0 ± 0.5V. 4. Two identifier bytes may be selected. All Ai inputs are held low (V IL ), except A9, which is set to V H, and A0, which is toggled low (V IL ) to select the manufacturer s identification byte and high (V IH ) to select the device code byte. Table 5-2. DC and AC operating conditions for read operation Atmel AT27C Industrial operating temperature (case) V CC power supply -40 C - 85 C 5V 10% 3
4 Table 5-3. DC and operating characteristics for read operation Symbol Parameter Condition Min Max Units I LI Input load current V IN = 0V to V CC (Com., Ind.) ±1.0 A I LO Output leakage current V OUT = 0V to V CC (Com., Ind.) ±5.0 A I SB I V (1) SB1 (CMOS), CE = V CC 0.3V 100 A CC standby current I SB2 (TTL), CE = 2.0 to V CC + 0.5V 1.0 ma I CC V CC active current f = 5MHz, I OUT = 0mA, CE = V IL 40 ma V IL Input low voltage V V IH Input high voltage 2.0 V CC V V OL Output low voltage I OL = 2.1mA 0.4 V V OH Output high voltage I OH = -400µA 2.4 V Note: 1. V CC must be applied simultaneously or before OE/ V PP, and removed simultaneously or after OE/V PP Table 5-4. AC characteristics for read operation Atmel AT27C Symbol Parameter Condition Min Max Units t ACC (4) t CE (3) t OE (3)(4) t DF (2)(5) Address to output delay CE = OE/V PP = V IL 90 ns CE to output delay OE = V IL 90 ns OE to output delay CE = V IL 20 ns OE or CE high to output float, whichever occurred first 30 ns t OH Output hold from address, CE or OE/V PP, whichever occurred first 0 ns 4 Atmel AT27C080
5 Atmel AT27C080 Figure 5-1. 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. t DF is specified form OE/V PP or CE, whichever occurs first. Output float is defined as the point when data is no longer driven. 3. OE/V PP may be delayed up to t CE - t OE after the falling edge of CE without impact on t CE. 4. OE/V PP may be delayed up to t ACC - t OE after the address is valid without impact on t ACC. 5. This parameter is only sampled and is not 100% tested. Figure 5-2. Input test waveform and measurement levels t R, t F < 20ns (10% to 90%) Figure 5-3. Output test load 1.3V OUTPUT PIN (1N914) 3.3K CL Note: CL = 100pF including jig capacitance. 5
6 Table 5-5. Pin capacitance f = 1MHz, T = 25 C (1) Symbol Typ Max Units Conditions C IN 4 8 pf V IN = 0V C OUT 8 12 pf V OUT = 0V Note: 1. Typical values for nominal supply voltage. This parameter is only sampled and is not 100% tested. Figure 5-4. Programming waveforms Notes: 1. The input timing reference is 0.8V for V IL and 2.0V for V IH. 2. t OE and t DFP are characteristics of the device, but must be accommodated by the programmer. 6 Atmel AT27C080
7 Atmel AT27C080 Table 5-6. DC programming characteristics T A = 25 ± 5 C, V CC = 6.5 ± 0.25V, OE/V PP = 13.0 ± 0.25V Symbol Parameter Test Conditions I LI Input load current V IN = V IL, V IH 10 µa V IL Input low level V V IH Input high level 2.0 V CC V V OL Output low voltage I OL = 2.1mA 0.4 V V OH Output high voltage I OH = -400µA 2.4 V I CC2 V CC supply current (program and verify) 40 ma I PP2 OE/V PP supply current CE = V IL 25 ma V ID A9 product identification voltage V Table 5-7. AC programming characteristics T A = 25 ± 5 C, V CC = 6.5 ± 0.25V, OE/V PP = 13.0 ± 0.25V Symbol Parameter Test conditions (1) Min Max Units Limits t AS Address setup time 2.0 µs t OES OE/V PP setup time 2.0 µs t OEH OE/V PP hold time Input rise and fall times: 2.0 µs t DS Data setup time (10% to 90%) 20ns 2.0 µs t AH Address hold time Input pulse levels: 0.0 µs t DH Data hold time 0.45V to 2.4V 2.0 µs t DFP CE high to output float delay (2) ns t VCS V CC setup time Input timing reference level: 0.8V to 2.0V 2.0 µs t PW CE program pulse width (3) µs t DV Data valid from CE Output timing reference level: 1.0 µs t VR OE/V PP recovery time 0.8V to 2.0V 2.0 ns OE/V t PP pulse rise time during PRT programming 50 ns Notes: 1. V CC must be applied simultaneously with or before OE/V PP and removed simultaneously with or after OE/V PP. 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 50µs ± 5%. Min Limits Max Units Table 5-8. The Atmel AT27C080 integrated product identification code Pins Codes A0 O7 O6 O5 O4 O3 O2 O1 O0 Hex data Manufacturer E Device type A 7
8 6. Rapid programming algorithm A 50µs CE pulse width is used to program. The address is set to the first location. V CC is raised to 6.5V and OE/V PP is raised to 13.0V. Each address is first programmed with one 50µs 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 10 successive 50µs 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. OE/V PP is then lowered to V IL and V CC to 5.0V. All bytes are read again and compared with the original data to determine if the device passes or fails. Figure 6-1. Rapid programming algorithm 8 Atmel AT27C080
9 Atmel AT27C Ordering information Green package (Pb/halide-free) t ACC (ns) Active I CC (ma) Standby Atmel ordering code Package Lead finish Operation range AT27C080-90JU AT27C080-90PU 32J 32P6 Matte tin Matte tin Industrial (-40 C to 85 C) Package type 32J 32P6 32-lead, plastic, J-leaded chip carrier (PLCC) 32-lead, 0.600" wide, plastic, dual inline package (PDIP) 9
10 8. Package information 32J PLCC 1.14(0.045) X 45 PIN NO. 1 IDENTIFIER 1.14(0.045) X (0.0125) 0.191(0.0075) B E1 E B1 E2 e D1 D A A2 A1 0.51(0.020)MAX 45 MAX (3X) COMMON DIMENSIONS (Unit of measure = mm) 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. D2 SYMBOL MIN NOM MAX NOTE A A A D D Note 2 D E E Note 2 E B B e TYP 10/04/01 Package Drawing Contact: packagedrawings@atmel.com TITLE 32J, 32-lead, Plastic J-leaded Chip Carrier (PLCC) DRAWING NO. 32J REV. B 10 Atmel AT27C080
11 Atmel AT27C080 32P6 PDIP D PIN 1 E1 A SEATING PLANE L e B1 B A1 E C 0º ~ 15º REF COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX NOTE eb A A D Note 1 E E Note 1 B Note: 1. Dimensions D and E1 do not include mold Flash or Protrusion. Mold Flash or Protrusion shall not exceed 0.25mm (0.010"). B L C eb e TYP 09/28/01 Package Drawing Contact: packagedrawings@atmel.com TITLE DRAWING NO. REV. 32P6, 32-lead (0.600"/15.24mm wide) Plastic Dual Inline Package (PDIP) 32P6 B 11
12 9. Revision history Doc. Rev. Date Comments 0360M 04/2011 Remove TSOP package Add lead finish to ordering information 0360L 12/ Atmel AT27C080
13 Atmel Corporation 2325 Orchard Parkway San Jose, CA USA Tel: (+1) (408) Fax: (+1) (408) Atmel Asia Limited Unit 01-5 & 16, 19F BEA Tower, Millennium City Kwun Tong Road Kwun Tong, Kowloon HONG KONG Tel: (+852) Fax: (+852) Atmel Munich GmbH Business Campus Parkring 4 D Garching b. Munich GERMANY Tel: (+49) Fax: (+49) Atmel Japan 9F, Tonetsu Shinkawa Bldg Shinkawa Chuo-ku, Tokyo JAPAN Tel: (+81) (3) Fax: (+81) (3) Atmel Corporation. All rights reserved. / Rev.: 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. 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. EXCEPT AS SET FORTH IN THE ATMEL TERMS AND CONDITIONS OF SALES LOCATED ON THE ATMEL WEBSITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL OR INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS AND PROFITS, BUSINESS INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT, EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and products descriptions at any time without notice. Atmel does not make any commitment to update the information contained herein. Unless specifically provided otherwise, Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life.
14 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Microchip: AT27C080-90JC AT27C080-90PC AT27C080-12JC AT27C080-90PI AT27C080-90PU AT27C080-90JI AT27C080-90JU AT27C080-90TI AT27C080-90TU AT27C080-12PC AT27C080-90JU-T
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