at27bv512 512k (64k x 8) unregulated battery-voltage ? high speed otp cmos eprom features fast read access time - 90 ns dual voltage range operation unregulated battery power supply range, 2.7v to 3.6v or standard 5v 10% supply range pin compatible with jedec standard at27c512 low power cmos operation 20 m a max. (less than 1 m a typical) standby for v cc = 3.6v 29 mw max. active at 5 mhz for v cc = 3.6v jedec standard surface mount packages 32-lead plcc 28-lead 330-mil soic 28-lead tsop high reliability cmos technology 2,000v esd protection 200 ma latchup immunity rapid ? programming algorithm - 100 m s/byte (typical) cmos and ttl compatible inputs and outputs jedec standard for lvttl and lvbo integrated product identification code commercial and industrial temperature ranges description the at27bv512 is a high performance, low power, low voltage 524,288 bit one-time programmable read only memory (otp eprom) organized as 64k by 8 bits. it re- quires only one supply in the range of 2.7v to 3.6v in normal read mode operation, making it ideal for fast, portable systems using either regulated or unregulated battery power. atmels innovative design techniques provide fast speeds that rival 5v parts while keeping the low power consumption of a 3v supply. at v cc = 2.7v, any byte can be accessed in less than 90 ns. with a typical power consumption of only 18 mw at 5 mhz and v cc = 3v, the at27bv512 consumes less than one fifth the power of a standard 5v eprom. (continued) pin configurations pin name function a0 - a15 addresses o0 - o7 outputs ce chip enable oe/v pp output enable nc no connect 0602a soic top view note: plcc package pins 1 and 17 are dont connect. plcc top view tsop top view type 1 at27bv512 3-13
system considerations standby mode supply current is typically less than 1 m a at 3v. the at27bv512 simplifies system design and stretches battery lifetime even further by eliminating the need for power supply regulation. the at27bv512 is available in industry standard jedec- approved one-time programmable (otp) plastic plcc, soic, and tsop packages. all devices feature two-line control ( ce, oe) to give designers the flexibility to prevent bus contention. the at27bv512 operating with v cc at 3.0v produces ttl level outputs that are compatible with standard ttl logic devices operating at v cc = 5.0v. at v cc = 2.7v, the part is compatible with jedec approved low voltage battery operation (lvbo) interface specifications. the device is also capable of standard 5-volt operation making it ideally suited for dual supply range systems or card products that are pluggable in both 3-volt and 5-volt hosts. atmels at27bv512 has additional features to ensure high quality and efficient production use. the rapid ? pro- gramming algorithm reduces the time required to program the part and guarantees reliable programming. program- ming time is typically only 100 m s/byte. the integrated product identification code electronically identifies the de- vice and manufacturer. this feature is used by industry standard programming equipment to select the proper programming algorithms and voltages. the at27bv512 programs exactly the same way as a standard 5v at27c512r and uses the same programming equipment. description (continued) switching between active and standby conditions via the chip enable pin may produce transient voltage excur- sions. unless accommodated by the system design, these transients may exceed data sheet limits, resulting in de- vice non-conformance. at a minimum, a 0.1 m f high fre- quency, 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 4.7 m f bulk electrolytic capacitor should be utilized, again connected between the v cc and ground terminals. this capacitor should be posi- tioned as close as possible to the point where the power supply is connected to the array. 3-14 at27bv512
temperature under bias .................. -40c to +85c storage temperature...................... -65c to +125c voltage on any pin with respect to ground......................... -2.0v to +7.0v (1) voltage on a9 with respect to ground ...................... -2.0v to +14.0v (1) v pp supply voltage with respect to ground....................... -2.0v to +14.0v (1) *notice: stresses beyond those listed under absolute maxi- mum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions beyond those indi- cated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. note: 1. minimum voltage is -0.6v dc which may undershoot to -2.0v for pulses of less than 20 ns. maximum out- put pin voltage is v cc + 0.75v dc which may be ex- ceeded if certain precautions are observed (consult application notes) and which may overshoot to +7.0v for pulses of less than 20 ns. absolute maximum ratings* block diagram operating modes mode \ pin ce oe/v pp ai v cc outputs read (2) v il v il ai v cc (2) d out output disable (2) v il v ih x (1) v cc (2) high z standby (2) v ih xxv cc (2) high z rapid program (3) v il v pp ai v cc (3) d in pgm verify (3) v il v il ai v cc (3) d out pgm inhibit (3) v ih v pp xv cc (3) high z product identification (3, 5) v il v il a9 = v h (4) a0 = v ih or v il a1 - a15 = v il v cc (3) identification code notes: 1. x can be v il or v ih . 2. read, output disable, and standby modes require, 2.7v v cc 3.6v, or 4.5v v cc 5.5v. 3. refer to programming characteristics. programming modes require v cc = 6.5v. 4. v h = 12.0 0.5v. 5. 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 tog- gled low (v il ) to select the manufacturers identification byte and high (v ih ) to select the device code byte. at27bv512 3-15
dc and operating characteristics for read operation symbol parameter condition min max units v cc = 2.7v to 3.6v i li input load current v in = 0v to v cc 1 m a i lo output leakage current v out = 0v to v cc 5 m a i pp1 ( 2 ) v pp ( 1 ) read/standby current v pp = v cc 10 m a i sb v cc ( 1 ) standby current i sb1 (cmos), ce = v cc 0.3v 20 m a i sb2 (ttl), ce = 2.0 to v cc + 0.5v 100 m a i cc v cc active current f = 5 mhz, i out = 0 ma, ce = v il , v cc = 3.6v 8ma v il input low voltage v cc = 3.0 to 3.6v -0.6 0.8 v v cc = 2.7 to 3.6v -0.6 0.2 x v cc v v ih input high voltage v cc = 3.0 to 3.6v 2.0 v cc + 0.5 v v cc = 2.7 to 3.6v 0.7 x v cc v cc + 0.5 v v ol output low voltage i ol = 2.0 ma 0.4 v i ol = 100 m a 0.2 v i ol = 20 m a 0.1 v v oh output high voltage i oh = -2.0 ma 2.4 v i oh = -100 m av cc - 0.2 v i oh = -20 m av cc - 0.1 v v cc = 4.5v to 5.5v i li input load current v in = 0v to v cc 1 m a i lo output leakage current v out = 0v to v cc 5 m a i pp1 ( 2 ) v pp ( 1 ) read/standby current v pp = v cc 10 m a i sb v cc (1) standby current i sb1 (cmos), ce = v cc 0.3v 100 m a i sb2 (ttl), ce = 2.0 to v cc + 0.5v 1 ma i cc v cc active current f = 5 mhz, i out = 0 ma, ce = v il 20 ma v il input low voltage -0.6 0.8 v v ih input high voltage 2.0 v cc + 0.5 v v ol output low voltage i ol = 2.1 ma 0.4 v v oh output high voltage i oh = -400 m a 2.4 v notes: 1. v cc must be applied simultaneously with or before oe/v pp , and removed simultaneously with or after oe/v pp . 2. v pp may be connected directly to v cc , except during pro- gramming. the supply current would then be the sum of i cc and i pp . dc and ac operating conditions for read operation at27bv512 -90 -12 -15 operating temperature (case) com. 0c - 70c 0c - 70c 0c - 70c ind. -40c - 85c -40c - 85c -40c - 85c v cc power supply 2.7v to 3.6v 2.7v to 3.6v 2.7v to 3.6v 5v 10% 5v 10% 5v 10% 3-16 at27bv512
ac characteristics for read operation (v cc = 2.7v to 3.6v and 4.5v to 5.5v) at27bv512 -90 -12 -15 symbol parameter condition min max min max min max units t acc (3) address to output delay ce = oe/v pp = v il 90 120 150 ns t ce (2) ce to output delay oe/v pp = v il 90 120 150 ns t oe (2, 3) oe/v pp to output delay ce = v il 50 50 60 ns t df (4, 5) oe/v pp or ce high to output float, whichever occurred first 40 40 50 ns t oh output hold from address, ce or oe/v pp , whichever occurred first 0 0 0 ns notes: 2, 3, 4, 5. - see ac waveforms for read operation. 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. oe/v pp may be delayed up to t ce - t oe after the falling edge of ce without impact on t ce . 3. oe/v pp may be delayed up to t acc - t oe after the address is valid without impact on t acc . 4. this parameter is only sampled and is not 100% tested. 5. output float is defined as the point when data is no longer driven. 6. when reading the 27bv512, a 0.1 m f capacitor is required across v cc and grond to supress spurious voltage transients. at27bv512 3-17
pin capacitance (f = 1 mhz, t = 25c) (1) typ max units conditions c in 46pfv in = 0v c out 812pfv out = 0v note: 1. typical values for nominal supply voltage. this parameter is only sampled and is not 100% tested. output test load note: cl = 100 pf including jig capacitance. t r , t f < 20 ns (10% to 90%) input test waveform and measurement level 3-18 at27bv512
programming waveforms (1) 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. 3. when programming the 27bv512, a 0.1 m f capacitor is re- quired across v pp and ground to supress spurious voltage transients. dc programming characteristics t a = 25 5c, v cc = 6.5 0.25v, oe/v pp = 13.0 0.25v symbol parameter test conditions limits units min max i li input load current v in = v il , v ih 10 m a v il input low level -0.6 0.8 v v ih input high level 2.0 v cc + 0.5 v v ol output low voltage i ol = 2.1 ma 0.4 v v oh output high voltage i oh = -400 m a2.4 v i cc2 v cc supply current (program and verify) 25 ma i pp2 oe/v pp current ce = v il 25 ma v id a9 product identification voltage 11.5 12.5 v at27bv512 3-19
atmels 27bv512 integrated product identification code (1) codes pins hex data a0 o7 o6 o5 o4 o3 o2 o1 o0 manufacturer000011110 1e device type 100001101 0d note: 1. the at27bv512 has the same product identification code as the at27c512r. both are programming compatible. rapid programming algorithm a 100 m s 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 pro- grammed with one 100 m s 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 100 m s pulses are applied with a veri- fication 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 se- lected until all have been checked. oe/v pp is then low- ered 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. ac programming characteristics t a = 25 5c, v cc = 6.5 0.25v, oe/v pp = 13.0 0.25v sym- bol parameter test conditions* (1) limits units min max t as address setup time 2 m s t oes oe/v pp setup time 2 m s t oeh oe/v pp hold time 2 m s t ds data setup time 2 m s t ah address hold time 0 m s t dh data hold time 2 m s t dfp ce high to out- put float delay (2) 0130ns t vcs v cc setup time 2 m s t pw ce program pulse width (3) 95 105 m s t dv data valid from ce (2) 1 m s t vr oe/v pp recovery time 2 m s t prt oe/v pp pulse rise time during programming 50 ns *ac conditions of test: input rise and fall times (10% to 90)..............20 ns input pulse levels................................0.45v to 2.4v input timing reference level................0.8v to 2.0v output timing reference level.............0.8v to 2.0v notes: 1. v cc must be applied simultaneously or before oe/v pp and removed simultaneously 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 100 m sec 5%. 3-20 at27bv512
t acc (ns) i cc (ma) ordering code package operation range active standby 90 8 0.02 at27bv512-90jc 32j commercial at27bv512-90rc 28r (0c to 70c) at27bv512-90tc 28t 8 0.02 at27bv512-90ji 32j industrial at27bv512-90ri 28r (-40c to 85c) at27bv512-90ti 28t 120 8 0.02 at27bv512-12jc 32j commercial at27bv512-12rc 28r (0c to 70c) at27bv512-12tc 28t 8 0.02 at27bv512-12ji 32j industrial at27bv512-12ri 28r (-40c to 85c) at27bv512-12ti 28t 150 8 0.02 at27bv512-15jc 32j commercial at27bv512-15rc 28r (0c to 70c) at27bv512-15tc 28t 8 0.02 at27bv512-15ji 32j industrial at27bv512-15ri 28r (-40c to 85c) AT27BV512-15TI 28t ordering information package type 32j 32 lead, plastic j-leaded chip carrier (plcc) 28r 28 lead, 0.330" wide, plastic gull wing small outline (soic) 28t 28 lead, thin small outline package (tsop) at27bv512 3-21
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