AT49F040A ATMEL Corporation, AT49F040A Datasheet
AT49F040A
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AT49F040A Summary of contents
Page 1
... Typical 10,000 Write Cycles Description The AT49F040A is a 5-volt only in-system reprogrammable Flash memory. Its 4 megabits of memory is organized as 524,288 words by 8 bits. Manufactured with Atmel’s advanced nonvolatile CMOS technology, the device offers access times with power dissipation of just 110 mW over the commercial temperature range. ...
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... Five-volt-only commands determine the read and programming operation of the device. Reading data out of the device is similar to reading from an EPROM; it has standard CE, OE, and WE inputs to avoid bus contention. Reprogramming the AT49F040A is per- formed by erasing a block of data and then programming on a byte-by-byte basis. The byte programming time is a fast 20 µ ...
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... Device READ: The AT49F040A is accessed like an EPROM. 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 whenever high. This dual-line control gives designers flexibility in preventing bus contention ...
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... For details, see Operating Modes (for hardware operation) or Software Product Identification. The manufacturer and device code is the same for both modes. DATA POLLING: The AT49F040A features DATA polling to indicate the end of a program cycle. During a program cycle an attempted read of the last byte loaded will result in the com- plement of the loaded data on I/O7 ...
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... AA AAA 55 555 555 AA AAA 55 555 555 AA AAA 55 555 555 AA AAA 55 555 555 AA AAA 55 555 F0 *NOTICE: + 0.6V CC AT49F040A 3rd Bus 4th Bus 5th Bus Cycle Cycle Cycle Data Addr Data Addr 80 555 AA AAA 80 555 AA AAA A0 Addr 555 AA AAA 90 F0 Stresses beyond those listed under “Absolute Maxi- mum Ratings” ...
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... MHz OUT -400 µ -100 µ 4. AT49F040A-55 AT49F040A-70 -40°C - 85°C -40°C - 85°C 5V ± 10% 5V ± 10 OUT High Z High Z X High Z ( Manufacturer Code IL ...
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... ADDRESS ADDRESS VALID ACC HIGH Z OUTPUT - t after the address transition without impact on t ACC after the falling edge of CE without impact AT49F040A AT49F040A-70 Max Min Max OUTPUT VALID . ...
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... Input Test Waveform and Measurement Level < Output Load Test Pin Capacitance ( MHz 25°C Symbol Typ OUT Note: 1. This parameter is characterized and is not 100% tested. AT49F040A 5.0V 1.8K OUTPUT PIN 30 pF 1.3K Max Units Conditions ...
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... DATA IN CE Controlled OE ADDRESS WE CE DATA IN 3359B–FLASH–10/04 t OES t OEH OES t OEH AT49F040A Min Max WPH WPH t DH Units ...
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... OE must be high only when WE and CE are both low. 2. For chip erase, the address should be 555. For sector erase, the address depends on what sector erased. (See note 4 under command definitions.) 3. For chip erase, the data should be 10H, and for sector erase, the data should be 30H. AT49F040A 10 Min Typ ...
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... Any address location may be used but the address should not vary. 3359B–FLASH–10/04 (1) t OEH t OE HIGH ( OEH OEHP HIGH Z AT49F040A Min Typ Max Min Typ Max specification must be met by the toggling ...
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... Additional Device Code is read for address 0003H 3. The device does not remain in identification mode if powered down. 4. The device returns to standard operation mode. 5. Manufacturer Code: 1FH Device Code: 13H Additional Device Code: 0FH AT49F040A 12 Boot Block Lockout Feature Enable Algorithm (1) LOAD DATA F0 TO ...
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... AT49F040A Ordering Information I (mA ACC (ns) Active Standby 0.1 32J 32-lead, Plastic J-leaded Chip Carrier Package (PLCC) 32T 32-lead, Plastic Thin Small Outline Package (TSOP mm) 3359B–FLASH–10/04 Ordering Code Package AT49F040A-55JI 32J AT49F040A-55TI 32T AT49F040A-70JI 32J AT49F040A-70TI ...
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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 AT49F040A 14 1.14(0.045) X 45˚ PIN NO. 1 IDENTIFIER E1 E ...
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... Orchard Parkway San Jose, CA 95131 R 3359B–FLASH–10/04 PIN SEATING PLANE A1 TITLE 32T, 32-lead ( Package) Plastic Thin Small Outline Package, Type I (TSOP) AT49F040A 0º ~ 8º 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 ...