at49bv040a ATMEL Corporation, at49bv040a Datasheet
at49bv040a
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at49bv040a Summary of contents
Page 1
... Reading data out of the device is similar to reading from an EPROM; it has standard CE, OE, and WE inputs to avoid bus conten- tion. Reprogramming the AT49BV040A is performed by erasing a block of data and then programming on a byte by byte basis. The byte programming time is a fast 30 µs. ...
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... Pin Configurations Pin Name A0 - A18 I/O0 - I/O7 2.1 32-lead PLCC Top View 2.2 32-lead VSOP ( mm) or 32-lead TSOP, Type mm) – Top View AT49BV040A 2 Function Addresses Chip Enable Output Enable Write Enable Data Inputs/Outputs ...
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... Read The AT49BV040A 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 the outputs. The outputs are put in the high impedance state whenever high. This dual-line con- trol gives designers flexibility in preventing bus contention. 3358C– ...
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... The program cycle has addresses latched on the falling edge CE, whichever occurs last, and the data latched on the rising edge CE, whichever occurs first. Programming is completed after the specified t indicate the end of a program cycle. AT49BV040A 4 6. The command sequences are written by applying a low “Command Definition Table” on page cycle time ...
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... DATA Polling The AT49BV040A features DATA polling to indicate the end of a program cycle. During a pro- gram cycle an attempted read of the last byte loaded will result in the complement of the loaded data on I/O7. Once the program cycle has been completed, true data is valid on all outputs and the next cycle may begin ...
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... Temperature Under Bias................................ -55°C to +125°C Storage Temperature ..................................... -65°C to +150°C All Input Voltages (including NC Pins) with Respect to Ground ...................................-0.6V to +6.25V All Output Voltages with Respect to Ground .............................-0. Voltage on OE with Respect to Ground ...................................-0.6V to +13.5V AT49BV040A 6 1st Bus 2nd Bus 3rd Bus Cycle Cycle Cycle Data ...
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... Entry/Exit”. Condition MHz OUT -400 µA OH AT49BV040A AT49BV040A-90 -40°C - 85°C 2.7V - 3. OUT High Z High Z X High Z ( Manufacturer Code Device Code H IH ...
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... ADDRESS VALID ACC HIGH after the address transition without impact on t ACC after the falling edge of CE without impact AT49BV040A-90 Max Min Max OUTPUT VALID . ACC ...
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... R F 13. Output Load Test 14. Pin Capacitance ( MHz 25°C Symbol Typ OUT Note: 1. This parameter is characterized and is not 100% tested. 3358C–FLASH–3/05 2.4V AC 1.5V 0.4V 3.0V 1.8K OUTPUT PIN 30 pF 1.3K Max 6 12 AT49BV040A AC MEASUREMENT LEVEL Units Conditions OUT 9 ...
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... WP t Data Set-up Time Data, OE Hold Time DH OEH t Write Pulse Width High WPH 16. AC Byte Load Waveforms 16.1 WE Controlled OE ADDRESS CE WE DATA IN 16.2 CE Controlled OE ADDRESS WE CE DATA IN AT49BV040A 10 t OES t OEH OES t OEH ...
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... For chip erase, the data should be 10H, and for sector erase, the data should be 30H. 3358C–FLASH–3/ WPH 555 AAA 555 555 BYTE 0 BYTE 1 BYTE 2 6.) AT49BV040A Min Typ Max AAA Note Note 3 AA BYTE 3 BYTE 4 BYTE 5 Units 50 µ ...
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... Notes: 1. Toggling either both OE and CE will operate toggle bit. The t specification must be met by the toggling input(s). OEHP 2. Beginning and ending state of I/O6 will vary. 3. Any address location may be used but the address should not vary. AT49BV040A OEH t OE HIGH Z ...
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... LOAD DATA F0 TO ANY ADDRESS Notes: 1. Data Format: I/O7 - I/O0 (Hex); EXIT PRODUCT 2. Boot block lockout feature enabled. IDENTIFICATION (4) MODE ; AT49BV040A (1) LOAD DATA AA TO ADDRESS 555 LOAD DATA 55 TO ADDRESS AAA LOAD DATA 80 TO ADDRESS 555 LOAD DATA AA TO ADDRESS 555 LOAD DATA 55 ...
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... Ordering Code Package AT49BV040A-70JI 32J AT49BV040A-70TI 32T AT49BV040A-70VI 32V AT49BV040A-90JI 32J AT49BV040A-90TI 32T AT49BV040A-90VI 32V Ordering Code Package AT49BV040A-70JU 32J AT49BV040A-70TU 32T AT49BV040A-90TU 32T AT49BV040A-90VU 32V Package Type Operation Range Industrial (-40° to 85°C) Industrial (-40° to 85°C) Operation Range Industrial (-40° ...
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... Lead coplanarity is 0.004" (0.102 mm) maximum. 2325 Orchard Parkway San Jose, CA 95131 R 3358C–FLASH–3/05 1.14(0.045) X 45˚ PIN NO. 1 IDENTIFIER TITLE 32J, 32-lead, Plastic J-leaded Chip Carrier (PLCC) AT49BV040A 0.318(0.0125) 0.191(0.0075 COMMON DIMENSIONS (Unit of Measure = mm) MIN NOM MAX SYMBOL A 3.175 – ...
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... This package conforms to JEDEC reference MO-142, Variation BD. 2. Dimensions D1 and E do not include mold protrusion. Allowable protrusion 0.15 mm per side and 0.25 mm per side. 3. Lead coplanarity is 0.10 mm maximum. 2325 Orchard Parkway San Jose, CA 95131 R AT49BV040A 16 PIN SEATING PLANE ...
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... Orchard Parkway San Jose, CA 95131 R 3358C–FLASH–3/05 PIN SEATING PLANE A1 TITLE 32V, 32-lead ( Package) Plastic Thin Small Outline Package, Type I (VSOP) AT49BV040A 0º ~ 8º GAGE PLANE COMMON DIMENSIONS (Unit of Measure = mm) SYMBOL MIN NOM MAX A – ...
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