|Datasheets.org.uk - 100 Million Datasheets from 7500 Manufacturers.|
Top Searches for this datasheet
AT28BV64B-20TU - AT28BV64B-20TU
AT28BV64B - AT28BV64B
Single 2.7V 3.6V Supply Hardware Software Data Protection Power Dissipation
Active Current CMOS Standby Current Fast Read Access Time Automatic Page Write Operation Internal Address Data Latches Bytes Internal Control Timer Fast Write Cycle Times Page Write Cycle Time: Maximum Byte Page Write Operation DATA Polling Write Detection High-reliability CMOS Technology Endurance: 100,000 Cycles Data Retention: Years JEDEC Approved Byte-wide Pinout Industrial Temperature Ranges Green (Pb/Halide-free) Packaging Option
Battery-Voltage Parallel EEPROM with Page Write Software Data Protection AT28BV64B
AT28BV64B high-performance electrically erasable programmable read onlymemory (EEPROM). memory organized 8,192 words bits. Manufactured with Atmel's advanced nonvolatile CMOS technology, device offers access times with power dissipation just When device deselected, CMOS standby current less than AT28BV64B accessed like static read write cycle without need external components. device contains byte page register allow writing bytes simultaneously. During write cycle, addresses bytes data internally latched, freeing address data other operations. Following initiation write cycle, device will automatically write latched data using internal control timer. write cycle detected DATA polling I/O7. Once write cycle been detected access read write begin. Atmel's AT28BV64B additional features ensure high quality manufacturability. software data protection mechanism guards against inadvertent writes. device also includes extra bytes EEPROM device identification tracking.
Name I/O0 I/O7 Function Addresses Chip Enable Output Enable Write Enable Data Inputs/Outputs Connect Don't Connect
32-lead PLCC View
PLCC package pins Don't Connect.
28-lead PDIP/SOIC View
I/O0 I/O1 I/O2 I/O7 I/O6 I/O5 I/O4 I/O3
28-lead TSOP View
I/O7 I/O6 I/O5 I/O4 I/O3 I/O2 I/O1 I/O0
I/O1 I/O2 I/O3 I/O4 I/O5
AT28BV64B accessed like static RAM. When high, data stored memory location determined address pins asserted outputs. outputs high impedance state when either high. This dual-line control gives designers flexibility preventing contention their systems.
pulse input with (respectively) high initiates write cycle. address latched falling edge whichever occurs last. data latched first rising edge Once byte write been started, will automatically time itself completion. Once programming operation been initiated duration tWC, read operation will effectively polling operation.
page write operation AT28BV64B allows bytes data written into device during single internal programming period. page write operation initiated same manner byte write; first byte written then followed additional bytes. Each successive byte must written within (tBLC) previous byte. tBLC limit exceeded, AT28BV64B will cease accepting data commence internal programming operation. bytes during page write operation must reside same page defined state inputs. each high transition during page write operation, must same. inputs specify which bytes within page written. bytes loaded order altered within same load period. Only bytes which specified writing will written; unnecessary cycling other bytes within page does occur.
AT28BV64B features DATA Polling indicate write cycle. During byte page write cycle attempted read last byte written will result complement written data presented I/O7. Once write cycle been completed, true data valid outputs, next write cycle begin. DATA Polling begin anytime during write cycle.
addition DATA Polling, AT28BV64B provides another method determining write cycle. During write operation, successive attempts read data from device will result I/O6 toggling between zero. Once write completed, I/O6 will stop toggling valid data will read. Reading toggle begin time during write cycle.
precautions taken, inadvertent writes occur during transitions host system power supply. Atmel® incorporated both hardware software features that will protect memory against inadvertent writes.
Hardware Protection Hardware features protect against inadvertent writes AT28BV64B following ways: power-on delay once reached 1.8V (typical) device will automatically time (typical) before allowing write; write inhibit holding low, high high inhibits write cycles; noise filter pulses less than (typical) inputs will initiate write cycle. Software Data Protection software-controlled data protection feature been implemented AT28BV64B. Software data protection (SDP) helps prevent inadvertent writes from corrupting data device. prevent inadvertent writes during power-up power-down well other potential periods system instability. AT28BV64B only written using software data protection feature. series three write commands specific addresses with specific data must presented device before writing byte page mode. same three write commands must begin each write operation. software write commands must obey page mode write timing specifications. data 3-byte command sequence written device; addresses command sequence utilized just like other location device. attempt write device without 3-byte sequence will start internal write timers. data will written device; however, duration tWC, read operations will effectively polling operations.
extra bytes EEPROM memory available user device identification. raising 0.5V using address locations 7FC0H 7FFFH, additional bytes written read from same manner regular memory array.
AT28BV64B-20 Operating Temperature (Case) Power Supply -40° 2.7V 3.6V
Mode Read Write
Standby/Write Inhibit Write Inhibit Write Inhibit Output Disable Chip Erase Notes: VIH. Refer Programming Waveforms. 12.0V 0.5V.
Absolute Maximum Ratings*
Temperature Under Bias. -55° +125° Storage Temperature -65° +150° Input Voltages (including Pins) with Respect Ground .-0.6V +6.25V Output Voltages with Respect Ground .-0.6V 0.6V Voltage with Respect Ground .-0.6V +13.5V *NOTICE: Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. This stress rating only functional operation device these other conditions beyond those indicated operational sections this specification implied. Exposure absolute maximum rating conditions extended periods affect device reliability
Symbol Parameter Input Load Current Output Leakage Current Standby Current CMOS Active Current Input Voltage Input High Voltage Output Voltage Output High Voltage -100 0.45 Condition VI/O 0.3V MHz; IOUT Units
AT28BV64B-20 Symbol tACC
Parameter Address Output Delay Output Delay Output Delay Output Float Output Hold from Address, Whichever Occurred First
delayed tACC after address transition without impact tACC. delayed after falling edge without impact tACC after address change without impact tACC. specified from whichever occurs first pF). This parameter characterized 100% tested.
Input Test Waveforms Measurement Level
Output Test Load
Symbol COUT Note: Units Conditions VOUT
This parameter characterized 100% tested.
Symbol tAS, tOES tDH, tOEH tWPH Notes: Parameter Address, Set-up Time Address Hold Time Chip Select Set-up Time Chip Select Hold Time Write Pulse Width Data Set-up Time Data, Hold Time Time Data Valid Write Pulse Width High Restriction byte write operations must preceded command sequence. NR(1) Units
Page Mode Characteristics
Symbol tBLC tWPH Parameter Write Cycle Time Address Set-up Time Address Hold Time Data Set-up Time Data Hold Time Write Pulse Width Byte Load Cycle Time Write Pulse Width High Units
LOAD DATA ADDRESS 1555
LOAD DATA ADDRESS 0AAA
LOAD DATA ADDRESS 1555
LOAD DATA ADDRESS(3)
LOAD LAST BYTE LAST ADDRESS
ENTER DATA PROTECT STATE
Data Format: I/O7 I/O0 (Hex); Address Format: (Hex). Data protect state will re-activated write cycle. bytes data loaded.
Software Data Protection Write Cycle Waveforms(1)(2)(3)
must conform addressing sequence first three bytes shown above. through must specify same page address during each high transition after software code been entered. must high only when both low.
Data Polling Characteristics(1)
Symbol tOEH Notes: Parameter Data Hold Time Hold Time Output Delay
Write Recovery Time These parameters characterized 100% tested. Read Characteristics.
Data Polling Waveforms
Symbol tOEH tOEHP Notes: Parameter Data Hold Time Hold Time Output Delay High Pulse Write Recovery Time These parameters characterized 100% tested. Read Characteristics.
Toggling either both will operate toggle bit. Beginning ending state I/O6 will vary. address location used, address should vary.
23.1 Standard Package
(mA) Active Standby 0.05 Ordering Code AT28BV64B-20JI AT28BV64B-20PI AT28BV64B-20SI AT28BV64B-20TI Package 28P6 Operation Range Industrial (-40°
"Valid Part Numbers" below.
Green Package Option (Pb/Halide-free)
(mA) Active Standby 0.05 Ordering Code AT28BV64B-20JU AT28BV64B-20TU AT28BV64B-20SU Package Operation Range Industrial (-40°
Package Type 28P6 32-lead, Plastic J-leaded Chip Carrier (PLCC) 28-lead, 0.600" Wide, Plastic Dual Inline Package (PDIP) 28-lead, 0.300" Wide, Plastic Gull Wing Small Outline (SOIC) 28-lead, Plastic Thin Small Outline Package (TSOP)
Valid Part Numbers
following table lists standard Atmel products that ordered.
Device Numbers AT28BV64B Speed Package Temperature Combinations
1.14(0.045) 0.318(0.0125) 0.191(0.0075)
COMMON DIMENSIONS (Unit Measure SYMBOL
3.175 1.524 0.381 12.319 11.354 9.906 14.859 13.894 12.471 0.660 0.330
3.556 2.413 12.573 11.506 10.922 15.113 14.046 13.487 0.813 0.533
This package conforms JEDEC reference MS-016, Variation Dimensions include mold protrusion. Allowable protrusion .010"(0.254 side. Dimension include mold mismatch measured extreme material condition upper lower parting line. Lead coplanarity 0.004" (0.102 maximum.
10/04/01 2325 Orchard Parkway Jose, 95131 TITLE 32J, 32-lead, Plastic J-leaded Chip Carrier (PLCC) DRAWING REV.
COMMON DIMENSIONS (Unit Measure 0.381 36.703 15.240 13.462 0.356 1.041 3.048 0.203 15.494 2.540 4.826 37.338 15.875 13.970 0.559 1.651 3.556 0.381 17.526 Note Note NOTE
This package conforms JEDEC reference MS-011, Variation Dimensions include mold Flash Protrusion. Mold Flash Protrusion shall exceed 0.25 (0.010").
09/28/01 2325 Orchard Parkway Jose, 95131 TITLE 28P6, 28-lead (0.600"/15.24 Wide) Plastic Dual Inline Package (PDIP) DRAWING 28P6 REV.
Dimensions Millimeters (Inches). Controlling dimension: Millimeters.
7.60(0.2992) 10.65(0.419) 7.40(0.2914) 10.00(0.394)
0.32(0.0125) 0.23(0.0091) 1.27(0.050) 0.40(0.016)
8/4/03 2325 Orchard Parkway Jose, 95131 TITLE 28S, 28-lead, 0.300" Body, Plastic Gull Wing Small Outline (SOIC) JEDEC Standard MS-013 DRAWING REV.
SYMBOL Notes: This package conforms JEDEC reference MO-183. Dimensions include mold protrusion. Allowable protrusion 0.15 side 0.25 side. Lead coplanarity 0.10 maximum.
COMMON DIMENSIONS (Unit Measure 0.05 0.90 13.20 11.70 7.90 0.50 1.00 13.40 11.80 8.00 0.60 0.25 BASIC 0.17 0.10 0.22 0.55 BASIC 0.27 0.21 1.20 0.15 1.05 13.60 11.90 8.10 0.70 Note Note NOTE
12/06/02 2325 Orchard Parkway Jose, 95131 TITLE 28T, 28-lead 13.4 Plastic Thin Small Outline Package, Type (TSOP) DRAWING REV.
2325 Orchard Parkway Jose, 95131, Tel: 1(408) 441-0311 Fax: 1(408) 487-2600
2325 Orchard Parkway Jose, 95131, Tel: 1(408) 441-0311 Fax: 1(408) 436-4314
Theresienstrasse Postfach 3535 74025 Heilbronn, Germany Tel: (49) 71-31-67-0 Fax: (49) 71-31-67-2340 1150 East Cheyenne Mtn. Blvd. Colorado Springs, 80906, Tel: 1(719) 576-3300 Fax: 1(719) 540-1759
Atmel Sarl Route Arsenaux Case Postale CH-1705 Fribourg Switzerland Tel: (41) 26-426-5555 Fax: (41) 26-426-5500
2325 Orchard Parkway Jose, 95131, Tel: 1(408) 441-0311 Fax: 1(408) 436-4314 Chantrerie 70602 44306 Nantes Cedex France Tel: (33) 2-40-18-18-18 Fax: (33) 2-40-18-19-60
Biometrics/Imaging/Hi-Rel MPU/ High-Speed Converters/RF Datacom
Avenue Rochepleine 38521 Saint-Egreve Cedex, France Tel: (33) 4-76-58-30-00 Fax: (33) 4-76-58-34-80
Room 1219 Chinachem Golden Plaza Mody Road Tsimshatsui East Kowloon Hong Kong Tel: (852) 2721-9778 Fax: (852) 2722-1369
Zone Industrielle 13106 Rousset Cedex, France Tel: (33) 4-42-53-60-00 Fax: (33) 4-42-53-60-01 1150 East Cheyenne Mtn. Blvd. Colorado Springs, 80906, Tel: 1(719) 576-3300 Fax: 1(719) 540-1759 Scottish Enterprise Technology Park Maxwell Building East Kilbride 0QR, Scotland Tel: (44) 1355-803-000 Fax: (44) 1355-242-743
Tonetsu Shinkawa Bldg. 1-24-8 Shinkawa Chuo-ku, Tokyo 104-0033 Japan Tel: (81) 3-3523-3551 Fax: (81) 3-3523-7581
Disclaimer: information this document provided connection with Atmel products. license, express implied, estoppel otherwise, intellectual property right granted this document connection with sale Atmel products. EXCEPT FORTH ATMEL'S TERMS CONDITIONS SALE LOCATED ATMEL'S SITE, ATMEL ASSUMES LIABILITY WHATSOEVER DISCLAIMS EXPRESS, IMPLIED STATUTORY WARRANTY RELATING PRODUCTS INCLUDING, LIMITED IMPLIED WARRANTY MERCHANTABILITY, FITNESS PARTICULAR PURPOSE, NON-INFRINGEMENT. EVENT SHALL ATMEL LIABLE DIRECT, INDIRECT, CONSEQUENTIAL, PUNITIVE, SPECIAL INCIDENTAL DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES LOSS PROFITS, BUSINESS INTERRUPTION, LOSS INFORMATION) ARISING INABILITY THIS DOCUMENT, EVEN ATMEL BEEN ADVISED POSSIBILITY SUCH DAMAGES. Atmel makes representations warranties with respect accuracy completeness contents this document reserves right make changes specifications product descriptions time without notice. Atmel does make commitment update information contained herein. Unless specifically provided otherwise, Atmel products suitable for, shall used automotive applications. Atmel's products intended, authorized, warranted components applications intended support sustain life.
2006 Atmel Corporation. rights reserved. Atmel logo combinations thereof, Everywhere Are® others registered trademarks trademarks Atmel Corporation subsidiaries. Other terms product names trademarks others.
Printed recycled paper.
Other recent searches
UNR211x - UNR211x UNR211x Datasheet
STB5NK50Z-1 - STB5NK50Z-1 STB5NK50Z-1 Datasheet
STP5NK50ZFP - STP5NK50ZFP STP5NK50ZFP Datasheet
STD5NK50Z - STD5NK50Z STD5NK50Z Datasheet
STD5NK50Z-1 - STD5NK50Z-1 STD5NK50Z-1 Datasheet
STB5BK50Z-1 - STB5BK50Z-1 STB5BK50Z-1 Datasheet
PP3G07S - PP3G07S PP3G07S Datasheet
EL5197 - EL5197 EL5197 Datasheet
EL5197A - EL5197A EL5197A Datasheet
CMBT4125 - CMBT4125 CMBT4125 Datasheet
AA8600AP - AA8600AP AA8600AP Datasheet