AT28BV256-20 ATMEL Corporation, AT28BV256-20 Datasheet
AT28BV256-20
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AT28BV256-20 Summary of contents
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... Commercial and Industrial Temperature Ranges Description The AT28BV256 is a high-performance Electrically Erasable and Programmable Read Only Memory. Its 256K of memory is organized as 32,768 words by 8 bits. Manufac- tured with Atmel’s advanced nonvolatile CMOS technology, the device offers access times to 200 ns with power dissipation of just 54 mW. When the device is deselected, the CMOS standby current is less than 200 µ ...
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... The AT28BV256 is accessed like a Static RAM for the read or write cycle without the need for external components. The device contains a 64-byte page register to allow writing bytes simultaneously. During a write cycle, the addresses and bytes of data are inter- nally latched, freeing the address and data bus for other operations. Following the initiation of a write cycle, the device will automatically write the latched data using an internal control timer ...
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... Device READ: The AT28BV256 is accessed like a Static RAM. When CE and OE are low and WE is high, the data stored at the memory location determined by the address pins is asserted on Operation the outputs. The outputs are put in the high impedance state when either high. ...
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... Standby Current CMOS Active Current Input Low Voltage IL V Input High Voltage IH V Output Low Voltage OL V Output High Voltage OH AT28BV256 4 AT28BV256-20 Com. 0°C - 70°C Ind. -40°C - 85°C 2. Condition ...
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... This parameter is characterized and is not 100% tested. 0273H–PEEPR–10/ ACC - t after the address transition without impact on t ACC after the falling edge of CE without impact pF). L AT28BV256 AT28BV256-20 AT28BV256-25 Min Max Min 200 200 ...
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... Input Test Waveforms and Measurement Level Output Test Load Pin Capacitance ( MHz 25°C Symbol Typ OUT Note: 1. This parameter is characterized and is not 100% tested. AT28BV256 < Max 6 12 Units Conditions OUT ...
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... AC Write Waveforms WE Controlled CE Controlled 0273H–PEEPR–10/04 t OES t OEH OES OEH AT28BV256 Min Max 200 WPH WPH t DH Units ...
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... A0 - A14 must conform to the addressing sequence for the first three bytes as shown above through A14 must specify the same page address during each high to low transition of WE (or CE) after the software code has been entered must be high only when WE and CE are both low. AT28BV256 8 (1)(2)(3) LOAD DATA AA ...
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... Toggling either both OE and CE will operate toggle bit. 2. Beginning and ending state of I/O6 will vary. 3. Any address location may be used but the address should not vary. 0273H–PEEPR–10/04 (1) t OEH t OE (1) t OEH AT28BV256 Min Typ Max Min Typ Max 10 10 150 0 ...
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... AT28BV256 10 0273H–PEEPR–10/04 ...
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... Plastic Thin Small Outline Package (TSOP) 0273H–PEEPR–10/04 Ordering Code AT28BV256-20JC AT28BV256-20PC AT28BV256-20SC AT28BV256-20TC AT28BV256-20JI AT28BV256-20PI AT28BV256-20SI AT28BV256-20TI AT28BV256-20TU AT28BV256-20JU AT28BV256-25JC AT28BV256-25PC AT28BV256-20SC AT28BV256-25TC AT28BV256-25JI AT28BV256-25PI AT28BV256-20SI AT28BV256-25TI Package and Temperature Combinations JC, JI, PC, PI, SC, SI, TC, TI, TU, JU JC, JI, PC, PI, SC, SI, TC, TI ...
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... 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. 2325 Orchard Parkway San Jose, CA 95131 R AT28BV256 12 1.14(0.045) X 45˚ PIN NO. 1 IDENTIFIER E1 E ...
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... Mold Flash or Protrusion shall not exceed 0.25 mm (0.010"). 2325 Orchard Parkway San Jose, CA 95131 R 0273H–PEEPR–10/04 D PIN 0º ~ 15º REF eB TITLE 28P6, 28-lead (0.600"/15.24 mm Wide) Plastic Dual Inline Package (PDIP) AT28BV256 E1 A1 COMMON DIMENSIONS (Unit of Measure = mm) MIN SYMBOL NOM A – – A1 0.381 – D 36.703 – ...
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... SOIC Dimensions in Millimeters and (Inches). Controlling dimension: Millimeters. 2325 Orchard Parkway San Jose, CA 95131 R AT28BV256 14 0.51(0.020) 0.33(0.013) 7.60(0.2992) 7.40(0.2914) PIN 1 1.27(0.50) BSC TOP VIEW 18.10(0.7125) 17.70(0.6969) 0.30(0.0118) 0.10(0.0040) 0º ~ 8º 1.27(0.050) 0.40(0.016) TITLE 28S, 28-lead, 0.300" Body, Plastic Gull Wing Small Outline (SOIC) JEDEC Standard MS-013 10 ...
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... Orchard Parkway San Jose, CA 95131 R 0273H–PEEPR–10/04 PIN SEATING PLANE A1 TITLE 28T, 28-lead (8 x 13.4 mm) Plastic Thin Small Outline Package, Type I (TSOP) AT28BV256 0º ~ 5º GAGE PLANE COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX A – ...
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... Atmel does not make any commitment to update the information contained herein. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © Atmel Corporation 2004. All rights reserved. Atmel are the trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Atmel Operations Memory ...