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cy7c1460av33 CY7C1462AV33 36-mbit (1 m 36/2 m 18) pipelined sram with nobl? architecture cypress semiconductor corporation ? 198 champion court ? san jose , ca 95134-1709 ? 408-943-2600 document number: 38-05353 rev. *i revised march 28, 2011 36-mbit (1 m 36/2 m 18/512 k 72) pipelined sram with nobl? architecture features pin compatible and functionally equivalent to zbt supports 250 mhz bus operations with zero wait states ? available speed grades are 250, 200 and 167 mhz internally self timed output buf fer control to eliminate the need to use asynchronous oe fully registered (inputs and outputs) for pipelined operation byte write capability 3.3 v power supply 3.3 v/2.5 v i/o power supply fast clock-to-output times ? 2.6 ns (for 250 mhz device) clock enable (cen ) pin to suspend operation synchronous self timed writes cy7c1460av33, CY7C1462AV33 available in jedec-standard pb-free 100-pin tqfp, pb-free and non pb-free 165-ball fbga package. ieee 1149.1 jtag-compatible boundary scan burst capability?linear or interleaved burst order ?zz? sleep mode option and stop clock option functional description the cy7c1460av33/CY7C1462AV33 are 3.3 v, 1 m 36/2 m 18 synchronous pipelined burst srams with no bus latency? (nobl ?? logic, respectively. they are designed to support unlimited true back-to-back read /write operations with no wait states. the cy7c1460av33/CY7C1462AV33 are equipped with the advanced (nobl) logic r equired to enable consecutive read/write operations with data being transferred on every clock cycle. this feature dramatically improves the thro ughput of data in systems that require freq uent write/read transitions. the cy7c1460av33/CY7C1462AV33 are pin compatible and functionally equivalent to zbt devices. all synchronous inputs pass through input registers controlled by the rising edge of the clock. all data outputs pass through output registers controlled by the rising edge of the clock. the clock input is qualified by the clock enable (cen ) signal, which when deasserted suspends operation an d extends the previous clock cycle. write operations are controll ed by the byte write selects (bw a ?bw d for cy7c1460av33 and bw a ?bw b for CY7C1462AV33) and a write enable (we ) input. all writes are conducted with on-chip synchronous self timed write circuitry. three synchronous chip enables (ce 1 , ce 2 , ce 3 ) and an asynchronous output enable (oe ) provide for easy bank selection and output tristate cont rol. to avoid bus contention, the output drivers are synchronously tristated during the data portion of a write sequence. a0, a1, a c mode bw a bw b we ce1 ce2 ce3 oe read logic dq s dq p a dq p b dq p c dq p d d a t a s t e e r i n g o u t p u t b u f f e r s memory array e e input register 0 address register 0 write address register 1 write address register 2 write registry and data coherency control logic burst logic a0' a1' d1 d0 q1 q0 a0 a1 c adv/ld adv/ld e input register 1 s e n s e a m p s e c lk c en write drivers bw c bw d zz sleep control o u t p u t r e g i s t e r s logic block diagram ? cy7c1460av33 (1 m 36) [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 2 of 28 a0, a1, a c mode bw a bw b we ce1 ce2 ce3 oe read logic dq s dq p a dq p b d a t a s t e e r i n g o u t p u t b u f f e r s memory array e e input register 0 address register 0 write address register 1 write address register 2 write registry and data coherency control logic burst logic a0' a1' d1 d0 q1 q0 a0 a1 c adv/ld adv/ld e input register 1 s e n s e a m p s o u t p u t r e g i s t e r s e c lk c en write drivers zz sleep control logic block diagram ? CY7C1462AV33 (2 m 18) [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 3 of 28 contents selection guide ................................................................ 4 pin configurations ........................................................... 4 pin definitions .................................................................. 6 functional overview ........................................................ 7 single read accesses ................................................ 7 burst read accesses .................................................. 7 single write accesses ................................................. 7 burst write accesses .................................................. 8 sleep mode ................................................................. 8 interleaved burst address table (mode = floating or vdd) ............................................. 8 linear burst address table (mode = gnd) .................. 8 zz mode electrical characteris tics ................................. 8 truth table ........................................................................ 9 partial write cycle description ..................................... 10 ieee 1149.1 serial boundary sc an (jtag) ... ........... .... 11 disabling the jtag feature ...................................... 11 tap controller state diagram ....................................... 11 test access port (tap) ............................................. 11 tap controller block diagram ...................................... 11 performing a tap r eset .......... .............. .......... 11 tap registers ...................................................... 11 tap instruction set ................................................... 12 tap timing diagram ...................................................... 13 tap ac switching characteristics ............................... 13 3.3 v tap ac test conditions ....................................... 14 2.5 v tap ac test conditions ....................................... 14 tap dc electrical characteristics and operating conditions .................................................. 14 identification register definitions ................................ 14 scan register sizes ....................................................... 15 identification codes ....................................................... 15 165-ball fbga boundary scan order .......................... 16 maximum ratings ........................................................... 17 operating range ............................................................. 17 neutron soft error immunity ......................................... 17 electrical characteristics ............................................... 17 capacitance .................................................................... 18 thermal resistance ........................................................ 18 switching characteristics .............................................. 19 switching waveforms .................................................... 20 ordering information ...................................................... 22 ordering code definitions ..... .................................... 22 package diagrams .......................................................... 23 acronyms ........................................................................ 25 document conventions ................................................. 25 units of measure ....................................................... 25 document history page ................................................. 26 sales, solutions, and legal information ...................... 28 worldwide sales and design s upport ......... .............. 28 products .................................................................... 28 psoc solutions ......................................................... 28 [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 4 of 28 selection guide description 250 mhz 200 mhz 167 mhz unit maximum access time 2.6 3.2 3.4 ns maximum operating current 475 425 375 ma maximum cmos standby current 120 120 120 ma pin configurations figure 1. 100-pin tqfp pinout a a a a a 1 a 0 v ss v dd a a a a a a v ddq v ss dqb dqb dqb v ss v ddq dqb dqb v ss nc v dd dqa dqa v ddq v ss dqa dqa v ss v ddq v ddq v ss dqc dqc v ss v ddq dqc v dd v ss dqd dqd v ddq v ss dqd dqd dqd v ss v ddq a a ce 1 ce 2 bw a ce 3 v dd v ss clk we cen oe a a 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 a a adv/ld zz cy7c1460av33 a a a a a 1 a 0 v ss v dd a a a a a a a nc nc v ddq v ss nc dqpa dqa dqa v ss v ddq dqa dqa v ss nc v dd dqa dqa v ddq v ss dqa dqa nc nc v ss v ddq nc nc nc nc nc nc v ddq v ss nc nc dqb dqb v ss v ddq dqb dqb v dd v ss dqb dqb v ddq v ss dqb dqb dqpb nc v ss v ddq nc nc nc a a ce 1 ce 2 nc nc bw b bw a ce 3 v dd v ss clk we cen oe a a 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 a a adv/ld zz mode CY7C1462AV33 bw d mode bw c dqc dqc dqc dqc dqpc dqd dqd dqd dqpb dqb dqa dqa dqa dqa dqpa dqb dqb (1 m 36) (2 m 18) bw b nc nc nc dqc nc nc/288m nc/144m nc/72m nc/288m nc/144m nc/72m dqpd a a a a [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 5 of 28 figure 2. 165-ball fbga (15 17 1.4 mm) pin configurations (continued) 234 567 1 a b c d e f g h j k l m n p r tdo nc/576m nc/1g dqp c dq c dqp d nc dq d a ce 1 bw b ce 3 bw c cen a ce2 dq c dq d dq d mode nc dq c dq c dq d dq d dq d nc/72m v ddq bw d bw a clk we v ss v ss v ss v ss v ddq v ss v dd v ss v ss v ss nc v ss v ss v ss v ss v ddq v ddq nc v ddq v ddq v ddq v ddq a a v dd v ss v dd v ss v ss v ddq v dd v ss v dd v ss v dd v ss v ss v ss v dd v dd v ss v dd v ss v ss nc tck a0 v ss tdi a a dq c v ss dq c v ss dq c dq c nc v ss v ss v ss v ss nc v ss a1 dq d dq d nc/144m nc v ddq v ss tms 891011 nc/288m a a adv/ld nc oe a a nc v ss v ddq nc dqp b v ddq v dd dq b dq b dq b nc dq b nc dq a dq a v dd v ddq v dd v ddq dq b v dd nc v dd dq a v dd v ddq dq a v ddq v dd v dd v ddq v dd v ddq dq a v ddq a a v ss a a a dq b dq b dq b zz dq a dq a dqp a dq a a v ddq a 234 567 1 a b c d e f g h j k l m n p r tdo nc/576m nc/1g nc nc dqp b nc dq b a ce 1 ce 3 bw b cen a ce2 nc dq b dq b mode nc dq b dq b nc nc nc nc/72m v ddq bw a clk we v ss v ss v ss v ss v ddq v ss v dd v ss v ss v ss nc v ss v ss v ss v ss v ddq v ddq nc v ddq v ddq v ddq v ddq a a v dd v ss v dd v ss v ss v ddq v dd v ss v dd v ss v dd v ss v ss v ss v dd v dd v ss v dd v ss v ss nc tck a0 v ss tdi a a dq b v ss nc v ss dq b nc nc v ss v ss v ss v ss nc v ss a1 dq b nc nc/144m nc v ddq v ss tms 891011 nc/288m a a adv/ld nc a oe a a v ss v ddq nc dqp a v ddq v dd nc dq a dq a nc nc nc dq a nc v dd v ddq v dd v ddq dq a v dd nc v dd nc v dd v ddq dq a v ddq v dd v dd v ddq v dd v ddq nc v ddq a a v ss a a a dq a nc nc zz dq a nc nc dq a a v ddq a CY7C1462AV33 (2 m 18) cy7c1460av33 (1 m 36) a a nc nc [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 6 of 28 pin definitions pin name i/o type pin description a0 a1 a input- synchronous address inputs used to select one of the address locations . sampled at the rising edge of the clk. bw a bw b bw c bw d bw e bw f bw g bw h input- synchronous byte write select inputs, active low . qualified with we to conduct writes to the sram. sampled on the rising edge of clk. bw a controls dq a and dqp a , bw b controls dq b and dqp b , bw c controls dq c and dqp c , bw d controls dq d and dqp d , bw e controls dq e and dqp e , bw f controls dq f and dqp f , bw g controls dq g and dqp g , bw h controls dq h and dqp h . we input- synchronous write enable input, active low . sampled on the rising edge of clk if cen is active low. this signal must be asserted lo w to initiate a write sequence. adv/ld input- synchronous advance/load input used to advance the on-chip address counter or load a new address . when high (and cen is asserted low) the internal burst counter is advanced. when low, a new address can be loaded into the device for an access. after being deselected, adv/ld should be driven low to load a new address. clk input- clock clock input . used to capture all synchronous inputs to the device. clk is qualified with cen . clk is only recognized if cen is active low. ce 1 input- synchronous chip enable 1 input, active low . sampled on the rising edge of clk. used in conjunction with ce 2 and ce 3 to select/deselect the device. ce 2 input- synchronous chip enable 2 input, active high . sampled on the rising edge of clk. used in conjunction with ce 1 and ce 3 to select/deselect the device. ce 3 input- synchronous chip enable 3 input, active low . sampled on the rising edge of clk. used in conjunction with ce 1 and ce 2 to select/deselect the device. oe input- asynchronous output enable, active low . combined with the synchronous logic block inside the device to control the direction of the i/o pins. wh en low, the i/o pins are allowed to behave as outputs. when deasserted high, i/o pins are tristated, and act as input data pins. oe is masked during the data portion of a write sequence, during the first clock when emerging from a deselected state and wh en the device has been deselected. cen input- synchronous clock enable input, active low . when asserted low the clock signal is recognized by the sram. when deasserted high the clock signal is masked. since deasserting cen does not deselect the device, cen can be used to extend the previous cycle when required. dq a dq b dq c dq d dq e dq f dq g dq h i/o- synchronous bidirectional data i/o lines . as inputs, they feed into an on-chip data register that is triggered by the rising edge of clk. as out puts, they deliver the data contained in the memory location specified by a x during the previous clock ri se of the read cycle. the direction of the pins is controlled by oe and the internal control logic. when oe is asserted low, the pins can behave as outputs. when high, dq a ?dq d are placed in a tristate condition. the outputs are automatically tr istated during the data portion of a write sequence, during the first clock when emergi ng from a deselected state, and when the device is deselected, rega rdless of the state of oe . dqp a, dqp b, dqp c, dqp d dqp e, dqp f dqp g, dqp h i/o- synchronous bidirectional data parity i/o lines . functionally, these signals are identical to dq [31:0] . during write sequences, dqp a is controlled by bw a , dqp b is controlled by bw b , dqp c is controlled by bw c , and dqp d is controlled by bw d , dqp e is controlled by bw e , dqp f is controlled by bw f , dqp g is controlled by bw g , dqp h is controlled by bw h . mode input strap pin mode input . selects the burst order of the device. tied high selects the interleaved burst order. pulled low selects the linear burst or der. mode should not change states during operation. when left floating mode default s high, to an interleaved burst order. tdo jtag serial output synchronous serial data-out to the jtag circuit . delivers data on the negative edge of tck. [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 7 of 28 functional overview the cy7c1460av33/cy7c1462av3 3 are synchronous-pipelined burst nobl srams designed specifically to eliminate wait states during write/read transitions . all synchronous inputs pass through input registers controlled by the rising edge of the clock. the clock signal is qualified with the clock enable input signal (cen ). if cen is high, the clock signal is not recognized and all internal states are maintained . all synchronous operations are qualified with cen . all data outputs pass through output registers controlled by the rising edge of the clock. maximum access delay from the clock rise (t co ) is 2.6 ns (250 mhz device). accesses can be initiated by asserting all three chip enables (ce 1 , ce 2 , ce 3 ) active at the rising edge of the clock. if clock enable (cen ) is active low and adv/ld is asserted low, the address presented to the device is latched. the access can either be a read or write oper ation, depending on the status of the write enable (we ). bw [x] can be used to conduct byte write operations. write operations are qualified by the write enable (we ). all writes are simplified with on-chip synchronous self timed write circuitry. three synchronous chip enables (ce 1 , ce 2 , ce 3 ) and an asynchronous output enable (oe ) simplify depth expansion. all operations (reads, writes, and de selects) are pipelined. adv/ld should be driven low after the device has been deselected to load a new address for the next operation. single read accesses a read access is initiated when the following conditions are satisfied at clock rise: (1) cen is asserted low, (2) ce 1 , ce 2 , and ce 3 are all asserted active, (3) the write enable input signal we is deasserted high, and (4) adv/ld is asserted low. the address presented to the address inputs is latched into the address register and presented to the memory core and control logic. the control logic determines that a read access is in progress and allows the requested data to propagate to the input of the output register. at the rising edge of the next clock the requested data is allowed to propagate through the output register and onto the data bus within 2.6 ns (250 mhz device) provided oe is active low. after the first clock of the read access the output buffers are controlled by oe and the internal control logic. oe must be driven low for the device to drive out the requested data. during the second clock, a subsequent operation (read/write/des elect) can be initiated. deselecting the device is also pipelined. therefore, when the sram is deselected at clock rise by one of the chip enable signals, its output tristates following the next clock rise. burst read accesses the cy7c1460av33/CY7C1462AV33 have an on-chip burst counter that enables the user the ability to supply a single address and conduct up to four reads without reasserting the address inputs. adv/ld must be driven low in order to load a new address into the sram, as described in the single read accesses section earlier. the sequence of the burst counter is determined by the mode input signal. a low input on mode selects a linear burst mode, a high selects an interleaved burst sequence. both burst counters use a0 and a1 in the burst sequence, and wraps around when incremented sufficiently. a high input on adv/ld increments the internal burst counter regardless of the state of chip enables inputs or we . we is latched at the beginning of a burst cycle. therefore, the type of access (read or write) is maintained throughout the burst sequence. single write accesses write access are initiated when the following conditions are satisfied at clock rise: (1) cen is asserted low, (2) ce 1 , ce 2 , and ce 3 are all asserted active, and (3) the write signal we is tdi jtag serial input synchronous serial data-in to the jtag circuit . sampled on the rising edge of tck. tms test mode select synchronous this pin controls the test access port state machine . sampled on the rising edge of tck. tck jtag-clock clock input to the jtag circuitry . v dd power supply power supply inputs to the core of the device . v ddq i/o power supply power supply for the i/o circuitry . v ss ground ground for the device . should be connected to ground of the system. nc n/a no connects . this pin is not connected to the die. nc/72m n/a not connected to the die . can be tied to any voltage level. nc /144m n/a not connected to the die . can be tied to any voltage level. nc /288m n/a not connected to the die . can be tied to any voltage level. nc /576m n/a not connected to the die . can be tied to any voltage level. nc /1g n/a not connected to the die . can be tied to any voltage level. zz input- asynchronous zz ?sleep? input . this active high input places the device in a non-time critical ?sleep? condition with data integrity preserved. during normal operation, this pin can be connected to v ss or left floating. zz pin has an internal pull-down. pin definitions (continued) pin name i/o type pin description [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 8 of 28 asserted low. the address presented to the address inputs is loaded into the address register. the write signals are latched into the control logic block. on the subsequent clock rise the data lines are automatically tristated regardless of the state of the oe input signal. this enables the external logic to present the data on dq and dqp (dq a,b,c,d /dqp a,b,c,d for cy7c1460av33 and dq a,b /dqp a,b for CY7C1462AV33). in addition, th e address for the subsequent access (read/write/deselect) is latched into the address register (provided the appropriate control signals are asserted). on the next clock rise the data presented to dq and dqp (dq a,b,c,d /dqp a,b,c,d for cy7c1460av33 and dq a,b /dqp a,b for CY7C1462AV33) (or a subset fo r byte write operations, see write cycle description table for details) inputs is latched into the device and the write is complete. the data written during the writ e operation is controlled by bw (bw a,b,c,d for cy7c1460av33 and bw a,b for CY7C1462AV33) signals. the cy7c1460av33/CY7C1462AV33 provides byte write capability that is described in the write cycle description table. asserting the write enable input (we ) with the selected byte write select (bw ) input selectively writ es to only the desired bytes. bytes not selected during a byte write operation remains unaltered. a synchronous self timed write mechanism has been provided to simplify the write operations. byte write capability has been included in order to greatly simplify read/modify/write sequences, which can be reduced to simple byte write opera- tions. because the cy7c1460av33/CY7C1462AV33 are common i/o devices, data should not be driven into the device while the outputs are active. the output enable (oe ) can be deasserted high before presenting data to the dq and dqp (dq a,b,c,d /dqp a,b,c,d for cy7c1460av33 and dq a,b /dqp a,b for CY7C1462AV33) inputs. doing so tristates the output drivers. as a safety precaution, dq and dqp (dq a,b,c,d /dqp a,b,c,d for cy7c1460av33 and dq a,b /dqp a,b for CY7C1462AV33) are automatically tristated during the data portion of a write cycle, regardless of the state of oe . burst write accesses the cy7c1460av33/CY7C1462AV33 has an on-chip burst counter that allows the user the ability to supply a single address and conduct up to four write operations without reasserting the address inputs. adv/ld must be driven low in order to load the initial address, as described in the single write accesses section earlier. when adv/ld is driven high on the subsequent clock rise, the chip enables (ce 1 , ce 2 , and ce 3 ) and we inputs are ignored and the burst counter is incremented. the correct bw (bw a,b,c,d for cy7c1460av33 and bw a,b for CY7C1462AV33) inputs must be driven in each cycl e of the burst write in order to write the correct bytes of data. sleep mode the zz input pin is an asynchronous input. asserting zz places the sram in a power conservation ?sleep? mode. two clock cycles are required to enter into or exit from this ?sleep? mode. while in this mode, data inte grity is guaranteed. accesses pending when entering the ?sleep? mode are not considered valid nor is the completion of the operation guaranteed. the device must be deselected prior to entering the ?sleep? mode. ce 1 , ce 2 , and ce 3 , must remain inactive for the duration of t zzrec after the zz input returns low. interleaved burst address table (mode = floating or v dd ) first address second address third address fourth address a1, a0 a1, a0 a1, a0 a1, a0 00 01 10 11 01 00 11 10 10 11 00 01 11 10 01 00 linear burst address table (mode = gnd) first address second address third address fourth address a1, a0 a1, a0 a1, a0 a1, a0 00 01 10 11 01 10 11 00 10 11 00 01 11 00 01 10 zz mode electrical characteristics parameter description test conditions min max unit i ddzz sleep mode standby current zz ? v dd ?? 0.2 v ? 100 ma t zzs device operation to zz zz ??? v dd ? 0.2 v ? 2t cyc ns t zzrec zz recovery time zz ? 0.2 v 2t cyc ?ns t zzi zz active to sleep current t his parameter is sampled ? 2t cyc ns t rzzi zz inactive to exit sleep curr ent this parameter is sampled 0 ? ns [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 9 of 28 truth table the truth table for cy7c1460av33/CY7C1462AV33 follows. [1, 2, 3, 4, 5, 6, 7] operation address used ce zz adv/ld we bw x oe cen clk dq deselect cycle none h l l x x x l l-h tri-state continue deselect cycle none x l h x x x l l-h tri-state read cycle (begin burst) external l l l h x l l l-h data out (q) read cycle (continue burst) next x l h x x l l l-h data out (q) nop/dummy read (begin burst) external l l l h x h l l-h tri-state dummy read (continue burst) next x l h x x h l l-h tri-state write cycle (begin burst) external l l l l l x l l-h data in (d) write cycle (continue burst) next x l h x l x l l-h data in (d) nop/write abort (begin burst) none l l l l h x l l-h tri-state write abort (continue burst) next x l h x h x l l-h tri-state ignore clock edge (stall) current x l x x x x h l-h ? sleep mode none x h x x x x x x tri-state notes 1. x = ?don't care?, h = logic high, l = logic low, ce stands for all chip enables active. bw x = l signifies at least one byte write select is active, bw x = valid signifies that the desired byte write selects are asserted, see write cycle description table for details. 2. write is defined by we and bw x . see write cycle description table for details. 3. when a write cycle is detected, all i/os are tristated, even during byte writes. 4. the dq and dqp pins are controlled by the current cycle and the oe signal. 5. cen = h inserts wait states. 6. device powers up deselected and the i/os in a tristate condition, regardless of oe . 7. oe is asynchronous and is not sampled with the clock rise. it is masked internally during write cycles.during a read cycle dq s and dqp x = tristate when oe is inactive or when the de vice is deselected, and dq s =data when oe is active. [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 10 of 28 partial write cycle description the partial write cycle description for cy7c1460av33/CY7C1462AV33 follows. [8, 9, 10, 11] function (cy7c1460av33) we bw d bw c bw b bw a read h x x x x write ? no bytes written l h h h h write byte a ? (dq a and dqp a ) lhhhl write byte b ? (dq b and dqp b )lhhlh write bytes b, a l h h l l write byte c ? (dq c and dqp c )lhlhh write bytes c, a l h l h l write bytes c, b l h ll l h write bytes c, b, a l h l l l write byte d ? (dq d and dqp d )llhhh write bytes d, a l l h h l write bytes d, b l l h l h write bytes d, b, a l l h l l write bytes d, c l l l h h write bytes d, c, a l l l h l write bytes d, c, b l l l l h write all bytes l l l l l function (CY7C1462AV33) [9, 11] we bw b bw a read hx x write ? no bytes written l h h write byte a ? (dq a and dqp a )lhl write byte b ? (dq b and dqp b )llh write both bytes l l l notes 8. x = ?don't care?, h = logic high, l = logic low, ce stands for all chip enables active. bw x = l signifies at least one byte write select is active, bw x = valid signifies that the desired byte write selects are asserted, see write cycle description table for details. 9. write is defined by we and bw x . see write cycle description table for details. 10. when a write cycle is detected, all i/os are tristated, even during byte writes. 11. table only lists a partial listing of the byte write combinations. any combination of bw [a:d] is valid. appropriate write is done based on which byte write is active. [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 11 of 28 ieee 1149.1 serial boundary scan (jtag) the cy7c1460av33/CY7C1462AV33 incorporates a serial boundary scan test access port (tap). this part is fully compliant with 1149.1. the tap operates using jedec-standard 3.3 v or 2.5 v i/o logic level. the cy7c1460av33/CY7C1462AV33 contains a tap controller, instruction register, boundary scan register, bypass register, and id register. disabling the jtag feature it is possible to operate the sram without using the jtag feature. to disable the tap co ntroller, tck must be tied low (v ss ) to prevent clocking of the device. tdi and tms are internally pulled up and may be unconnected. they may alternately be connected to v dd through a pull-up resistor. tdo should be left unconnected. upon power-up, the device comes up in a reset state which does not interfere with the operation of the device. tap controller state diagram the 0/1 next to each state repres ents the value of tms at the rising edge of tck. test access port (tap) test clock (tck) the test clock is used only with the tap controller. all inputs are captured on the rising edge of tc k. all outputs are driven from the falling edge of tck. test mode select (tms) the tms input is used to give commands to the tap controller and is sampled on the rising edge of tck. it is allowable to leave this ball unconnected if the tap is not used. the ball is pulled up internally, resulting in a logic high level. test data-in (tdi) the tdi ball is used to serially in put information into the registers and can be connected to the inpu t of any of the registers. the register between tdi and tdo is chosen by the instruction that is loaded into the tap instruction register. tdi is internally pulled up and can be unconnected if the tap is unused in an application. tdi is connected to the most significant bit (msb) of any register. (see tap controller block diagram .) test data-out (tdo) the tdo output ball is used to serially clock data-out from the registers. the output is active depending upon the current state of the tap state machine. the output changes on the falling edge of tck. tdo is connected to the least significant bit (lsb) of any register. (see tap controller state diagram .) tap controller block diagram performing a tap reset a reset is performed by forcing tms high (v dd ) for five rising edges of tck. this reset does not affect the operation of the sram and may be performed while the sram is operating. at power up, the tap is reset internally to ensure that tdo comes up in a high z state. tap registers registers are connected betw een the tdi and tdo balls and allow data to be scanned into and out of the sram test circuitry. only one register can be selected at a time through the instruction register. data is serially loaded into the tdi ball on the rising edge of tck. data is output on the tdo ball on the falling edge of tck. instruction register three bit instructions can be seri ally loaded into the instruction register. this register is loaded when it is placed between the tdi and tdo balls as shown in the tap controller block diagram . upon power-up, the instruction register is loaded with the idcode instruction. it is also loaded with the idcode instruction if the controller is placed in a reset state as described in the previous section. test-logic reset run-test/ idle select dr-scan select ir-scan capture-dr shift-dr capture-ir shift-ir exit1-dr pause-dr exit1-ir pause-ir exit2-dr update-dr exit2-ir update-ir 1 1 1 0 1 1 0 0 1 1 1 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 0 1 1 1 1 0 bypass register 0 instruction register 0 1 2 identication register 0 1 2 29 30 31 . . . boundary scan register 0 1 2 . . x . . . selection circuitry tck tms tap controller tdi tdo selection circuitry [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 12 of 28 when the tap controller is in t he capture-ir state, the two least significant bits are loaded with a binary ?01? pattern to enable fault isolation of the board-le vel serial test data path. bypass register to save time when serially shifting data through registers, it is sometimes advantageous to skip certain chips. the bypass register is a single bit register that can be placed between the tdi and tdo balls. this allows data to be shifted through the sram with minimal delay. the bypass register is set low (v ss ) when the bypass instruct ion is executed. boundary scan register the boundary scan register is connected to all the input and bidirectional balls on the sram. the length of the boundary scan register for the sram in different packages is listed in the scan register sizes table. the boundary scan register is lo aded with the contents of the ram i/o ring when the tap contro ller is in the capture-dr state and is then placed between the tdi and tdo balls when the controller is moved to the shift-dr state. the extest, sample/preload and sample z in structions can be used to capture the contents of the i/o ring. the 165-ball fbga boundary scan order [16] on page 16 and show the order in which the bits are connected. each bit corre- sponds to one of the bumps on the sram package. the msb of the register is con nected to tdi, and the lsb is connected to tdo. identification (id) register the id register is loaded with a vendor-specific, 32-bit code during the capture-dr stat e when the idcode command is loaded in the instruction register . the idcode is hardwired into the sram and can be shifted out when the tap controller is in the shift-dr state. the id regi ster has a vendor code and other information described in the identification register definitions on page 14 tap instruction set overview eight different instructions are possible with the three bit instruction register. al l combinations are listed in the instruction codes table. three of thes e instructions are listed as reserved and should not be used. the other five instructions described in detail are as follows. instructions are loaded into the tap controller during the shift-ir state when the instruction register is placed between tdi and tdo. during this state, instructions are shifted through the instruction register through the tdi and tdo balls. to execute the instruction after it is shifted in, the tap controller needs to be moved into the update-ir state. idcode the idcode instruction causes a vendor-specific, 32-bit code to be loaded into the instruction register. it also places the instruction register between the tdi and tdo balls and allows the idcode to be shifted out of the device when the tap controller enters the shift-dr state. the idcode instruction is load ed into the instruction register upon power up or whenever the tap controller is given a test logic reset state. sample z the sample z instruction causes the boundary scan register to be connected between the tdi and tdo pins when the tap controller is in a shift-dr st ate. the sample z command puts the output bus into a high z state until the next command is given during the ?update ir? state. sample/preload sample/preload is a 1149.1 mandatory instruction. when the sample/preload instruct ions are loaded into the instruction register and the tap controller is in the capture-dr state, a snapshot of data on the inputs and output pins is captured in the boundary scan register. the user must be aware that the tap controller clock can only operate at a frequency up to 20 mhz, while the sram clock operates more than an order of magnitude faster. because there is a large difference in the clock frequencies, it is possible that during the capture-dr state, an input or output undergoes a transition. the tap may then tr y to capture a signal while in transition (metastable state). this does not harm the device, but there is no guarantee as to the value that is captured. repeatable results may not be possible. to guarantee that the boundary scan register captures the correct value of a signal, the sram signal must be stabilized long enough to meet the tap controller?s capture setup plus hold times (t cs and t ch ). the sram clock input might not be captured correctly if there is no way in a design to stop (or slow) the clock during a sample/preload instruction. if this is an issue, it is still possible to capture all othe r signals and simply ignore the value of the ck and ck# captur ed in the boundary scan register. after the data is captured, it is possible to shift out the data by putting the tap into the shift-dr state. this places the boundary scan register between the tdi and tdo pins. preload allows an initial data pattern to be placed at the latched parallel outputs of the boun dary scan register cells prior to the selection of another boundary scan test operation. the shifting of data for the sample and preload phases can occur concurrently when require d?that is, while data captured is shifted out, the preloaded data can be shifted in. bypass when the bypass instruction is loaded in the instruction register and the tap is placed in a shift- dr state, the bypass register is placed between the tdi and tdo pins. the advantage of the bypass instruction is that it shortens the boundary scan path when multiple devices are connected together on a board. extest the extest instruction enables the preloaded data to be driven out through the system ou tput pins. this inst ruction also selects the boundary scan register to be connected for serial access between the tdi and tdo in the shift-dr controller state. [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 13 of 28 extest output bus tristate ieee standard 1149.1 mandates t hat the tap controller be able to put the output bus into a tristate mode. the boundary scan register has a special bit located at bit #89 (for 165-ball fbga package) or bit #138 (for 209-ball fbga package). when this scan cell, called the ?extest output bus tristate,? is latched into the preload register during the ?update-dr? state in the tap controller, it directly controls the state of the output (q-bus) pins , when the extest is entered as the current instruction. when high , it enables the output buffers to drive the output bus. when low, this bit places the output bus into a high z condition. this bit can be set by entering the sample/preload or extest command, and then shifting the desired bit into that cell, during the ?shift-dr? state. during ?update-dr,? the value loaded into that shift-register cell latches into the preload register. when the extest instruction is entered, this bit directly controls the output q-bus pins. note that this bit is preset high to enable the output when the device is powered-up, and also when the tap controller is in the ?test-logic-reset? state. reserved these instructions are not im plemented but are reserved for future use. do not use these instructions. tap timing diagram t tl test clock (tck) 123456 t est mode select (tms) t th test data-out (tdo) t cyc test data-in (tdi) t tmsh t tmss t tdih t tdis t tdox t tdov dont care undefined tap ac sitchi ng characteristics over the operating range [12, 13] parameter description min max unit clock t tcyc tck clock cycle time 50 ? ns t tf tck clock frequency ? 20 mhz t th tck clock high time 20 ? ns t tl tck clock low time 20 ? ns output times t tdov tck clock low to tdo valid ? 10 ns t tdox tck clock low to tdo invalid 0 ? ns setup times t tmss tms setup to tck clock rise 5 ? ns t tdis tdi setup to tck clock rise 5 ? ns t cs capture setup to tck rise 5 ? ns hold times t tmsh tms hold after tck clock rise 5 ? ns t tdih tdi hold after clock rise 5 ? ns t ch capture hold after clock rise 5 ? ns notes 12. t cs and t ch refer to the setup and hold time requirements of latching data from the boundary scan register. 13. test conditions are spec ified using the load in tap ac test conditions. t r /t f = 1 ns. [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 14 of 28 3.3 v tap ac test conditions input pulse levels................................................v ss to 3.3 v input rise and fall times....................................................1 ns input timing reference levels...... .................................... 1.5 v output reference levels ................................................. 1.5 v test load termination supply voltage ............................. 1.5 v figure 3. 3.3 v tap ac output load equivalent 2.5 v tap ac test conditions input pulse levels ............ ................................... v ss to 2.5 v input rise and fall time .....................................................1 ns input timing reference levels.... .................................... 1.25 v output reference levels .............. ................................. 1.25 v test load termination supply vo ltage ........................... 1.25 v figure 4. 2.5 v tap ac output load equivalent tdo 1.5v 20pf z = 50 o 50 tdo 1.25v 20pf z = 50 o 50 (0 c < t a < +70 c; v dd = 3.135 v to 3.6 v unless otherwise noted) [14] parameter description test conditions min max unit v oh1 output high voltage i oh = ?4.0 ma, v ddq = 3.3 v 2.4 ? v i oh = ?1.0 ma, v ddq = 2.5 v 2.0 ? v v oh2 output high voltage i oh = ?100 a v ddq = 3.3 v 2.9 ? v v ddq = 2.5 v 2.1 ? v v ol1 output low voltage i ol = 8.0 ma v ddq = 3.3 v ? 0.4 v i ol = 1.0 ma v ddq = 2.5 v ? 0.4 v v ol2 output low voltage i ol = 100 a v ddq = 3.3 v ? 0.2 v v ddq = 2.5 v ? 0.2 v v ih input high voltage v ddq = 3.3 v 2.0 v dd + 0.3 v v ddq = 2.5 v 1.7 v dd + 0.3 v v il input low voltage v ddq = 3.3 v ?0.3 0.8 v v ddq = 2.5 v ?0.3 0.7 v i x input load current gnd < v in < v ddq ?5 5 a identification regi ster definitions instruction field cy7c1460av33 (1 m 36) CY7C1462AV33 (2 m 18) description revision number (31:29) 000 000 describes the version number. device depth (28:24) [15] 01011 01011 reserved for internal use architecture/memory type(23:18) 001000 001000 defines memory type and architecture bus width/density(17:12) 100111 010111 defines width and density cypress jedec id code (11:1) 00000110100 00000110100 allows unique identification of sram vendor. id register presence indicator (0) 1 1 indicates the presence of an id register. notes 14. all voltages referenced to v ss (gnd). 15. bit #24 is ?1? in the id register definitions for both 2.5 v and 3.3 v versions of this device. [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 15 of 28 scan register sizes register name bit size ( 36) bit size ( 18) instruction 3 3 bypass 1 1 id 32 32 boundary scan order (165-ball fbga package) 89 89 identification codes instruction code description extest 000 captures i/o ring contents. places the boundary scan register between tdi and tdo. forces all sram outputs to high z state. idcode 001 loads the id register with the vendor id code and places the register between tdi and tdo. this operation does not affect sram operations. sample z 010 captures i/o ring contents. places the boundary scan register between tdi and tdo. forces all sram output drivers to a high z state. reserved 011 do not use: this instruct ion is reserved for future use. sample/preload 100 captures i/o ring contents. places the boundary scan register between tdi and tdo. does not affect sram operation. reserved 101 do not use: this instruct ion is reserved for future use. reserved 110 do not use: this instruct ion is reserved for future use. bypass 111 places the bypass register between tdi and tdo. this operation does not affect sram operations. [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 16 of 28 165-ball fbga bo undary scan order [16] cy7c1460av33 (1 m 36), CY7C1462AV33 (2 m 18) bit# ball id bit# ball id bit# ball id bit# ball id 1n6 26e11 51a3 76n1 2n7 27d11 52a2 77n2 3 10n 28 g10 53 b2 78 p1 4p11 29f10 54c2 79r1 5 p8 30 e10 55 b1 80 r2 6 r8 31 d10 56 a1 81 p3 7 r9 32 c11 57 c1 82 r3 8p9 33a11 58d1 83p2 9p10 34b11 59e1 84r4 10 r10 35 a10 60 f1 85 p4 11 r11 36 b10 61 g1 86 n5 12 h11 37 a9 62 d2 87 p6 13 n11 38 b9 63 e2 88 r6 14 m11 39 c10 64 f2 89 internal 15 l11 40 a8 65 g2 16 k11 41 b8 66 h1 17 j11 42 a7 67 h3 18 m10 43 b7 68 j1 19 l10 44 b6 69 k1 20 k10 45 a6 70 l1 21 j10 46 b5 71 m1 22 h9 47 a5 72 j2 23 h10 48 a4 73 k2 24 g11 49 b4 74 l2 25 f11 50 b3 75 m2 note 16. bit# 89 is preset high. [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 17 of 28 maximum ratings exceeding maximum ratings may shorten the useful life of the device. user guidelines are not tested. storage temperature .. ............... ............... ?65 c to +150 c ambient temperature with power applied ............. ............... ............... ?55 c to +125 c supply voltage on v dd relative to gnd ........?0.5 v to +4.6 v supply voltage on v ddq relative to gnd....... ?0.5 v to +v dd dc to outputs in tri-state ....................?0.5 v to v ddq + 0.5 v dc input voltage .................................. ?0.5 v to v dd + 0.5 v current into outputs (low) ......................................... 20 ma static discharge voltage.......................................... > 2001 v (per mil-std-883, method 3015) latch-up current .................................................... > 200 ma operating range range ambient temperature v dd v ddq commercial 0 c to +70 c 3.3 v ? 5% / + 10% 2.5 v ? 5% to v dd industrial ?40 c to +85 c neutron soft error immunity parameter description test conditions typ max* unit lsbu logical single bit upsets 25 c 361 394 fit/ mb lmbu logical multi bit upsets 25 c 0 0.01 fit/ mb sel single event latch-up 85 c 0 0.1 fit/ dev * no lmbu or sel events occurred during testing ; this column represents a statistical ? 2 , 95% confidence limit calculation. for more details refer to application note an 54908 ?accelerated neutron ser testing and calculation of terrestrial failure rates? electrical characteristics over the operating range [17, 18] parameter description test conditions min max unit v dd power supply voltage 3.135 3.6 v v ddq i/o supply voltage for 3.3 v i/o 3.135 v dd v for 2.5 v i/o 2.375 2.625 v v oh output high voltage for 3.3 v i/o, i oh = ?? 4.0 ma 2.4 ? v for 2.5 v i/o, i oh = ? 1.0 ma 2.0 ? v v ol output low voltage for 3.3 v i/o, i ol = ? 8.0 ma ? 0.4 v for 2.5 v i/o, i ol = ? 1.0 ma ? 0.4 v v ih input high voltage [17] for 3.3 v i/o 2.0 v dd + 0.3 v v for 2.5 v i/o 1.7 v dd + 0.3 v v v il input low voltage [17] for 3.3 v i/o ?0.3 0.8 v for 2.5 v i/o ?0.3 0.7 v i x input leakage current except zz and mode gnd ? v i ? v ddq ?5 5 ? a input current of mode input = v ss ?30 ? ? a input = v dd ? 5 ? a input current of zz input = v ss ?5 ? ? a input = v dd ? 30 ? a i oz output leakage current gnd ? v i ? v ddq, output disabled ?5 5 ? a notes 17. overshoot: v ih (ac) < v dd + 1.5 v (pulse width less than t cyc /2), undershoot: v il (ac)> ?2 v (pulse width less than t cyc /2). 18. t power up : assumes a linear ramp from 0 v to v dd (min) within 200 ms. during this time v ih < v dd and v ddq < v dd . [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 18 of 28 figure 5. ac test loads and waveforms note 19. tested initially and after any design or process changes that may affect these parameters. i dd v dd operating supply v dd = max, i out = 0 ma, f = f max = 1/t cyc 4 ns cycle, 250 mhz ? 475 ma 5 ns cycle, 200 mhz ? 425 ma 6 ns cycle, 167 mhz ? 375 ma i sb1 automatic ce power-down current?ttl inputs max v dd , device deselected, v in ? v ih or v in ? v il , f = f max = 1/t cyc all speed grades ? 225 ma i sb2 automatic ce power-down current?cmos inputs max v dd , device deselected, v in ? 0.3 v or v in > v ddq ?? 0.3 v, f = 0 all speed grades ? 120 ma i sb3 automatic ce power-down current?cmos inputs max v dd , device deselected, v in ? 0.3 v or v in > v ddq ?? 0.3 v, f = f max = 1/t cyc all speed grades ? 200 ma i sb4 automatic ce power-down current?ttl inputs max v dd , device deselected, v in ? v ih or v in ? v il , f = 0 all speed grades ? 135 ma capacitance [19] parameter description test conditions 100 tqfp max 165 fbga max unit c in input capacitance t a = 25 ? c, f = 1 mhz, v dd = 2.5 v, v ddq = 2.5 v 6.5 7 pf c clk clock input capacitance 3 7 pf c i/o input/output capacitance 5.5 6 pf electrical characteristics (continued) over the operating range [17, 18] parameter description test conditions min max unit thermal resistance [19] parameters description test conditions 100 tqfp package 165 fbga package unit ? ja thermal resistance (junction to ambient) test conditions follow standard test methods and procedures for measuring thermal impedance, per eia/jesd51. 25.21 20.8 ? c/w ? jc thermal resistance (junction to case) 2.28 3.2 ? c/w output r = 317 ? r = 351 ? 5pf including jig and scope (a) (b) output r l = 50 ? z 0 = 50 ? v t = 1.5 v 3.3 v all input pulses v ddq gnd 90% 10% 90% 10% ? 1 ns ? 1 ns (c) 3.3 v i/o test load output r = 1667 ? r =1538 ? 5pf including jig and scope (a) (b) output r l = 50 ? z 0 = 50 ? v t = 1.25 v 2.5 v all input pulses v ddq gnd 90% 10% 90% 10% ? 1 ns ? 1 ns (c) 2.5 v i/o test load [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 19 of 28 switching characteristics over the operating range [20, 21] parameter description ?250 ?200 ?167 unit min max min max min max t power [22] v cc (typical) to the first access read or write 1 ? 1 ? 1 ? ms clock t cyc clock cycle time 4.0 ? 5.0 ? 6.0 ? ns f max maximum operating frequency ? 250 ? 200 ? 167 mhz t ch clock high 1.5 ? 2.0 ? 2.4 ? ns t cl clock low 1.5 ? 2.0 ? 2.4 ? ns output times t co data output valid after clk rise ? 2.6 ? 3.2 ? 3.4 ns t eov oe low to output valid ? 2.6 ? 3.0 ? 3.4 ns t doh data output hold after clk rise 1.0 ? 1.5 ? 1.5 ? ns t chz clock to high z [23, 24, 25] ?2.6?3.0?3.4ns t clz clock to low z [23, 24, 25] 1.0?1.3?1.5? ns t eohz oe high to output high z [23, 24, 25] ?2.6?3.0?3.4ns t eolz oe low to output low z [23, 24, 25] 0?0?0?ns setup times t as address setup before clk rise 1.2 ? 1.4 ? 1.5 ? ns t ds data input setup before clk rise 1.2 ? 1.4 ? 1.5 ? ns t cens cen setup before clk rise 1.2 ? 1.4 ? 1.5 ? ns t wes we , bw x setup before clk rise 1.2?1.4?1.5? ns t als adv/ld setup before clk rise 1.2 ? 1.4 ? 1.5 ? ns t ces chip select setup 1.2 ? 1.4 ? 1.5 ? ns hold times t ah address hold after clk rise 0.3 ? 0.4 ? 0.5 ? ns t dh data input hold after clk rise 0.3 ? 0.4 ? 0.5 ? ns t cenh cen hold after clk rise 0.3 ? 0.4 ? 0.5 ? ns t weh we , bw x hold after clk rise 0.3?0.4?0.5? ns t alh adv/ld hold after clk rise 0.3 ? 0.4 ? 0.5 ? ns t ceh chip select hold after clk rise 0.3 ? 0.4 ? 0.5 ? ns notes 20. timing reference is 1.5 v when v ddq= 3.3 v and is 1.25 v when v ddq= 2.5 v. 21. test conditions shown in (a) of ac test loads unless otherwise noted. 22. this part has a voltage regulator internally; tpow er is the time power needs to be supplied above v dd minimum initially, before a read or write operation can be initiated. 23. t chz , t clz , t eolz , and t eohz are specified with ac test conditions shown in (b) of ac test loads. transition is meas ured 200 mv from steady-state voltage . 24. at any voltage and temperature, t eohz is less than t eolz and t chz is less than t clz to eliminate bus contention between srams when sharing the same data bus. these specifications do not imply a bus contention condition, but reflect parameters guaranteed over worst case user condi tions. device is designed to achieve high z prior to low z under the same system conditions. 25. this parameter is sampled and not 100% tested. [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 20 of 28 switching waveforms figure 6. read/write/timing [26, 27, 28] notes 26. for this waveform zz is tied low. 27. when ce is low, ce 1 is low, ce 2 is high and ce 3 is low. when ce is high,ce 1 is high or ce 2 is low or ce 3 is high. 28. order of the burst sequence is determined by the status of the mode (0 = linear, 1 = interleaved). burst operations are opti onal. write d(a1) 123 456789 clk t cyc t cl t ch 10 ce t ceh t ces we cen t cenh t cens bw x adv/ld t ah t as address a1 a2 a3 a4 a5 a6 a7 t dh t ds data i n-out (dq) t clz d(a1) d(a2) d(a5) q(a4) q(a3) d(a2+1) t doh t chz t co write d(a2) burst write d(a2+1) read q(a3) read q(a4) burst read q(a4+1) write d(a5) read q(a6) write d(a7) deselect oe t oev t oelz t oehz t doh dont care undefined q(a6) q(a4+1) [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 21 of 28 notes 29. for this waveform zz is tied low. 30. when ce is low, ce 1 is low, ce 2 is high and ce 3 is low. when ce is high,ce 1 is high or ce 2 is low or ce 3 is high. 31. the ignore clock edge or stall cycle (clock 3) illustrated cen being used to create a pause. a write is not performed during this cycle. 32. device must be deselected when entering zz mode. see cycle de scription table for all possible signal conditions to deselect the device. 33. i/os are in high z when exiting zz sleep mode. figure 7. nop, st all and deselect cycles [29, 30, 31] figure 8. zz mode timing [32, 33] switching waveforms (continued) read q(a3) 456 78910 clk ce we cen bwx adv/ld address a3 a4 a5 d(a4) data in-out (dq) a1 q(a5) write d(a4) stall write d(a1) 123 read q(a2) stall nop read q(a5) deselect continue deselect dont care undefined t chz a2 d(a1) q(a2) q(a3) t zz i supply clk zz t zzrec a ll inputs (except zz) dont care i ddzz t zzi t rzzi outputs (q) high-z deselect or read only [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 22 of 28 ordering information the table below contains only the parts that are currently available. if you don?t see what you are looking for, please contact your local sales representative. for more information, visit the cypress website at www.cypress.com and refer to the product summary page at http://www.cypress.com/products cypress maintains a worldwide network of offices, solution cent ers, manufacturer?s representa tives and distributors. to find th e office closest to you, visit us at http://www.cypress.com/ go/datasheet/offices speed (mhz) ordering code package diagram part and package type operating range 167 cy7c1460av33-167axc 51-85050 100-pin thin quad flat pack (14 20 1.4 mm) pb-free commercial CY7C1462AV33-167axc cy7c1460av33-167bzc 51-85165 165-ball fine-pitc h ball grid array (15 17 1.4 mm) cy7c1460av33-167axi 51-85050 100-pin thin quad fl at pack (14 20 1.4 mm) pb-free industrial 200 cy7c1460av33-200axc 51-85050 100-pin thin quad flat pack (14 20 1.4 mm) pb-free commercial 250 cy7c1460av33-250axc 51-85050 100-pin thin quad flat pack (14 20 1.4 mm) pb-free commercial cy7c1460av33-250axi 51-85050 100-pin thin quad fl at pack (14 20 1.4 mm) pb-free industrial ordering code definitions temperature range: x = c or i c = commercial; i = industrial package type: xx = ax or bz or bg ax = 100-pin tqfp (pb-free) bz = 165-ball fpbga speed grade (167 mhz / 200 mhz / 250 mhz) v33 = 3.3 v process technology ? 90 nm 14xx = 1460 or 1462 1460 = pl, 1 mb 36 (36 mb) 1462 = pl, 2 mb 18 (36 mb) marketing code: 7c = srams company id: cy = cypress 7c 14xx a - 167 x xx v33 cy [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 23 of 28 package diagrams figure 9. 100-pin tqfp (14 20 1.4 mm) 51-85050 *d [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 24 of 28 figure 10. 165-ball fbga (15 17 1.4 mm) package diagrams (continued) 51-85165 *b [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 25 of 28 acronyms document conventions units of measure acronym description ce chip enable cen clock enable cmos complementary metal oxide semiconductor fpbga fine-pitch ball grid array i/o input/output jtag joint test action group nobl no bus latency oe output enable sram static random access memory tck test clock tms test mode select tdi test data-in tdo test data-out tqfp thin quad flat pack we write enable symbol unit of measure ns nanoseconds vvolts a microamperes ma milliamperes ms milliseconds mm millimeter mhz megahertz pf picofarads wwatts c degrees celcius [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 26 of 28 document history page document title: cy7c1460av33/CY7C1462AV33, 36-mbit (1 m 36/2 m 18) pipelined sram with nobl? architecture document number: 38-05353 revision ecn orig. of change submission date description of change ** 254911 syt see ecn new data sheet part number changed from previo us revision. new and old part number differ by the letter ?a? *a 303533 syt see ecn changed h9 pin from v ssq to v ss on the pin configuration table for 209 fbga on page # 5 changed the test condition from v dd = min to v dd = max for v ol in the electrical characteristics table replaced ? ja and ? jc from tbd to respective thermal values for all packages on the thermal resistance table changed i dd from 450, 400 and 350 ma to 475, 425 and 375 ma for 250, 200 and 167 mhz respectively changed i sb1 from 190, 180 and 170 ma to 225 ma for 250, 200 and 167 mhz respectively changed i sb2 from 80 ma to 100 ma for all frequencies changed i sb3 from 180, 170 and 160 ma to 200 ma for 250, 200 and 167 mhz respectively changed i sb4 from 100 ma to 110 ma for all frequencies changed c in , c clk and c i/o to 6.5, 3 and 5.5 pf from 5, 5 and 7 pf for tqfp package changed t co from 3.0 to 3.2 ns and t doh from 1.3 ns to 1.5 ns for 200 mhz speed bin added pb-free information for 100-pin tqfp and 165 fbga and 209 bga packages *b 331778 syt see ecn modified address expansion balls in the pinouts for 165 fbga and 209 bga package as per jedec standards and updated the pin definitions accordingly modified v ol, v oh test conditions changed c in , c clk and c i/o to 7, 7and 6 pf from 5, 5 and 7 pf for 165 fbga package added industrial temperature grade changed i sb2 and i sb4 from 100 and 110 ma to 120 and 135 ma respectively updated the ordering information by shading and unshading mpns as per availability *c 417509 rxu see ecn converted from preliminary to final changed address of cypress semiconductor corporation on page# 1 from ?3901 north first street? to ?198 champion court? changed i x current value in mode from ?5 and 30 ? a to ?30 and 5 ? a respectively and also changed i x current value in zz from ?30 and 5 ? a to ?5 and 30 ? a respectively on page# 18 modified test condition from v ih < v dd to v ih ?? v dd modified ?input load? to ?input leakage current except zz and mode? in the electrical characteristics table replaced package name column with package diagram in the ordering information table replaced package diagram of 51-85050 from *a to *b *d 473229 nxr see ecn added the maximum rating for supply voltage on v ddq relative to gnd changed t th , t tl from 25 ns to 20 ns and t tdov from 5 ns to 10 ns in tap ac switching characteristics table updated the ordering information table. [+] feedback
cy7c1460av33 CY7C1462AV33 document number: 38-05353 rev. *i page 27 of 28 *e 2756998 vkn 08/28/09 included soft error immunity data modified ordering information table by including parts that are available and modified the disclaimer for the ordering infor- mation. updated package diagram for spec 51-85165. *f 2900822 njy 03/29/2010 added cy7c1460av33-167axi part in ordering information updated links in sales, solutions, and legal information updated 100-pin tqfp and 209-ball fbga package diagrams. *g 3043005 09/30/2010 njy added ordering code definitions . added acronyms and units of measure . minor edits and updated in new template. *h 3051765 10/07/2010 njy removed all mention of cy7c1464 and 209-ball fbga: part pruned. corrected typos in units of measure on page 25 . *i 3207715 03/28/2011 njy updated ordering information . updated package diagrams . document history page (continued) document title: cy7c1460av33/CY7C1462AV33, 36-mbit (1 m 36/2 m 18) pipelined sram with nobl? architecture document number: 38-05353 revision ecn orig. of change submission date description of change [+] feedback
document number: 38-05353 rev. *i revised march 28, 2011 page 28 of 28 qdr ? is the registered trademark and nobl tm and no bus latency tm are trademarks of cypress semiconductor corporation. all pr oducts and company names mentioned in this document may be the trademarks of their respective holders. cy7c1460av33 CY7C1462AV33 ? cypress semiconductor corporation, 2004-2011. the information contained herein is subject to change without notice. cypress s emiconductor corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a cypress product. nor does it convey or imply any license under patent or other rights. cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement wi th cypress. furthermore, cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. the inclusion of cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies cypress against all charges. any source code (software and/or firmware) is owned by cypress semiconductor corporation (cypress) and is protected by and subj ect to worldwide patent protection (united states and foreign), united states copyright laws and internatio nal treaty provisions. cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the cypress source code and derivative works for the sole purpose of creating custom software and or firmware in su pport of licensee product to be used only in conjunction with a cypress integrated circuit as specified in the applicable agreement. any reproduction, modification, translation, compilation, or repre sentation of this source code except as specified above is prohibited without the express written permission of cypress. disclaimer: cypress makes no warranty of any kind, express or implied, with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. cypress reserves the right to make changes without further notice to t he materials described herein. cypress does not assume any liability arising out of the application or use of any product or circuit described herein. cypress does not authori ze its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. the inclusion of cypress? prod uct in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies cypress against all charges. use may be limited by and subject to the applicable cypress software license agreement. sales, solutions, and legal information worldwide sales and design support cypress maintains a worldwide network of offices, solution center s, manufacturer?s representatives, and distributors. to find t he office closest to you, visit us at cypress locations . products automotive cypress.co m/go/automotive clocks & buffers cypress.com/go/clocks interface cypress. com/go/interface lighting & power control cypress.com/go/powerpsoc cypress.com/go/plc memory cypress.com/go/memory optical & image sensing cypress.com/go/image psoc cypress.com/go/psoc touch sensing cyp ress.com/go/touch usb controllers cypress.com/go/usb wireless/rf cypress.com/go/wireless psoc solutions psoc.cypress.com/solutions psoc 1 | psoc 3 | psoc 5 [+] feedback

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