CY7C1487V25-133BGC

CY7C1481V25 CY7C1483V25 CY7C1487V25 72-Mbit (2M x 36/4M x 18/1M x 72) Flow-Through SRAM Features • • • • • Supports 133 MHz bus operations 2M x 36/4M x 18/1M x 72 common IO 2.5V core power supply (VDD) 2.5V or 1.8V IO supply (VDDQ) Fast clock-to-output time Functional Description[1] The CY7C1481V25/CY7C1483V25/CY7C1487V25 is a 2.5V, 2M x 36/4M x 18/1M x 72 Synchronous Flow-through SRAM designed to interface with high-speed microprocessors with minimum glue logic. Maximum access delay from clock rise is 6.5 ns (133-MHz version). A 2-bit on-chip counter captures the first address in a burst and increments the address automatically for the rest of the burst access. All synchronous inputs are gated by registers controlled by a positive edge triggered Clock Input (CLK). The synchronous inputs include all addresses, all data inputs, address pipelining Chip Enable (CE1), depth expansion Chip Enables (CE2 and CE3), Burst Control inputs (ADSC, ADSP, and ADV), Write Enables (BWx, and BWE), and Global Write (GW). Asynchronous inputs include the Output Enable (OE) and the ZZ pin. The CY7C1481V25/CY7C1483V25/CY7C1487V25 enables either interleaved or linear burst sequences, selected by the MODE input pin. A HIGH selects an interleaved burst sequence, while a LOW selects a linear burst sequence. Burst accesses can be initiated with the Processor Address Strobe (ADSP) or the cache Controller Address Strobe (ADSC) inputs. Address advancement is controlled by the Address Advancement (ADV) input. Addresses and chip enables are registered at rising edge of clock when either Address Strobe Processor (ADSP) or Address Strobe Controller (ADSC) are active. Subsequent burst addresses can be internally generated as controlled by the Advance pin (ADV). The CY7C1481V25/CY7C1483V25/CY7C1487V25 operates from a +2.5V core power supply while all outputs may operate with either a +2.5 or +1.8V supply. All inputs and outputs are JEDEC-standard JESD8-5-compatible. — 6.5 ns (133-MHz version) • Provide high-performance 2-1-1-1 access rate • User selectable burst counter supporting Intel® Pentium® interleaved or linear burst sequences • Separate processor and controller address strobes • Synchronous self timed write • Asynchronous output enable • CY7C1481V25, CY7C1483V25 available in JEDEC-standard Pb-free 100-pin TQFP, Pb-free and non-Pb-free 165-ball FBGA package. CY7C1487V25 available in Pb-free and non-Pb-free 209-ball FBGA package • IEEE 1149.1 JTAG-Compatible Boundary Scan • “ZZ” Sleep Mode option Selection Guide 133 MHz Maximum Access Time Maximum Operating Current Maximum CMOS Standby Current 6.5 305 120 100 MHz 8.5 275 120 Unit ns mA mA Note 1. For best practices recommendations, refer to the Cypress application note System Design Guidelines at www.cypress.com. Cypress Semiconductor Corporation Document #: 38-05281 Rev. *H • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600 Revised April 24, 2007 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Logic Block Diagram – CY7C1481V25 (2M x 36) A 0, A1, A ADDRESS REGISTER A [1:0] MODE ADV CLK BURST Q1 COUNTER AND LOGIC Q0 CLR ADSC ADSP DQ D , DQP D BW D BYTE WRITE REGISTER DQ C, DQP C BYTE WRITE REGISTER DQ B , DQP B BYTE WRITE REGISTER DQ A , DQP A BW A BWE GW CE1 CE2 CE3 OE DQ A , DQPA BYTE WRITE REGISTER BYTE WRITE REGISTER DQ D , DQP D BYTE WRITE REGISTER DQ C, DQP C BYTE WRITE REGISTER DQ B , DQP B BW B BYTE WRITE REGISTER BW C MEMORY ARRAY SENSE AMPS OUTPUT BUFFERS DQ s DQP A DQP B DQP C DQP D ENABLE REGISTER INPUT REGISTERS ZZ SLEEP CONTROL Logic Block Diagram – CY7C1483V25 (4M x 18) A0,A1,A MODE ADDRESS REGISTER A[1:0] ADV CLK BURST Q1 COUNTER AND LOGIC CLR Q0 ADSC ADSP DQ B ,DQP B WRITE REGISTER DQ B ,DQP B WRITE DRIVER BW B MEMORY ARRAY SENSE AMPS OUTPUT BUFFERS BW A BWE GW DQ A ,DQP A WRITE REGISTER DQ A ,DQP A WRITE DRIVER INPUT REGISTERS DQs DQP A DQP B CE 1 CE 2 CE 3 OE ENABLE REGISTER ZZ SLEEP CONTROL Document #: 38-05281 Rev. *H Page 2 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Logic Block Diagram – CY7C1487V25 (1M x 72) A0, A1,A ADDRESS REGISTER A[1:0] MODE ADV CLK Q1 BINARY COUNTER CLR Q0 ADSC ADSP BW H DQ H , DQPH WRITE DRIVER DQ F, DQPF WRITE DRIVER DQ F, DQPF WRITE DRIVER DQ E , DQPE WRITE DRIVER DQ D , DQPD WRITE DRIVER DQ H , DQPH WRITE DRIVER DQ G , DQPG WRITE DRIVER DQ F, DQPF WRITE DRIVER DQ E , DQPE BYTE “a” WRITE DRIVER DQ D , DQPD WRITE DRIVER DQ C, DQPC WRITE DRIVER SENSE AMPS BW G BW F BW E MEMORY ARRAY BW D BW C DQ C, DQPC WRITE DRIVER OUTPUT REGISTERS BW B DQ B , DQPB WRITE DRIVER DQ B , DQPB WRITE DRIVER DQ A , DQPA WRITE DRIVER OUTPUT BUFFERS E BW A BWE GW CE1 CE2 CE3 OE DQ A , DQPA WRITE DRIVER ENABLE REGISTER PIPELINED ENABLE INPUT REGISTERS DQs DQP A DQP B DQP C DQP D DQP E DQP F DQP G DQP H ZZ SLEEP CONTROL Document #: 38-05281 Rev. *H Page 3 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Pin Configurations 100-Pin TQFP Pinout A A CE1 CE2 BWD BWC BWB BWA CE3 VDD VSS CLK GW BWE OE ADSC ADSP ADV A A 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 DQPC DQC DQC VDDQ VSSQ DQC DQC DQC DQC VSSQ VDDQ DQC DQC NC VDD NC VSS DQD DQD VDDQ VSSQ DQD DQD DQD DQD VSSQ VDDQ DQD DQD DQPD 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 CY7C1481V25 (2Mx 36) 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 DQPB DQB DQB VDDQ VSSQ DQB DQB DQB DQB VSSQ VDDQ DQB DQB VSS NC VDD ZZ DQA DQA VDDQ VSSQ DQA DQA DQA DQA VSSQ VDDQ DQA DQA DQPA NC NC NC VDDQ VSSQ NC NC DQB DQB VSSQ VDDQ DQB DQB NC VDD NC VSS DQB DQB VDDQ VSSQ DQB DQB DQPB NC VSSQ VDDQ NC NC NC 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 A A CE1 CE2 NC NC BWB BWA CE3 VDD VSS CLK GW BWE OE ADSC ADSP ADV 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 CY7C1483V25 (4M x 18) 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 A NC NC VDDQ VSSQ NC DQPA DQA DQA VSSQ VDDQ DQA DQA VSS NC VDD ZZ DQA DQA VDDQ VSSQ DQA DQA NC NC VSSQ VDDQ NC NC NC 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 MODE A A A A A1 A0 A A VSS VDD A A A A A A A A A MODE A A A A A1 A0 A A VSS VDD Document #: 38-05281 Rev. *H A A A A A A A A A 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Page 4 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Pin Configurations (continued) 165-Ball FBGA (15 x 17 x 1.4 mm) Pinout CY7C1481V25 (2M x 36) 1 A B C D E F G H J K L M N P R NC/288M NC/144M DQPC DQC DQC DQC DQC NC DQD DQD DQD DQD DQPD NC MODE 2 A A NC DQC DQC DQC DQC NC DQD DQD DQD DQD NC A 3 CE1 CE2 VDDQ VDDQ VDDQ VDDQ VDDQ NC VDDQ VDDQ VDDQ VDDQ VDDQ A A 4 BWC BWD VSS VDD VDD VDD VDD VDD VDD VDD VDD VDD VSS A 5 BWB BWA VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS NC TDI TMS 6 CE3 CLK 7 BWE GW 8 ADSC OE 9 ADV ADSP VDDQ VDDQ VDDQ VDDQ VDDQ NC VDDQ VDDQ VDDQ VDDQ VDDQ A A 10 A A NC/1G DQB DQB DQB DQB NC DQA DQA DQA DQA NC A A 11 NC NC/576M DQPB DQB DQB DQB DQB ZZ DQA DQA DQA DQA DQPA A A VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS A A1 VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS NC TDO TCK VSS VDD VDD VDD VDD VDD VDD VDD VDD VDD VSS A A A A0 A CY7C1483V25 (4M x 18) 1 A B C D E F G H J K L M N P R NC/288M NC/144M NC NC NC NC NC NC DQB DQB DQB DQB DQPB NC MODE 2 A A NC DQB DQB DQB DQB NC NC NC NC NC NC A 3 CE1 CE2 VDDQ VDDQ VDDQ VDDQ VDDQ NC VDDQ VDDQ VDDQ VDDQ VDDQ A A 4 BWB NC VSS VDD VDD VDD VDD VDD VDD VDD VDD VDD VSS A 5 NC BWA VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS NC TDI TMS 6 CE3 CLK 7 BWE GW 8 ADSC OE 9 ADV ADSP VDDQ VDDQ VDDQ VDDQ VDDQ NC VDDQ VDDQ VDDQ VDDQ VDDQ A A 10 A A NC/1G NC NC NC NC NC DQA DQA DQA DQA NC A A 11 A NC/576M DQPA DQA DQA DQA DQA ZZ NC NC NC NC NC A A VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS A VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS NC TDO TCK VSS VDD VDD VDD VDD VDD VDD VDD VDD VDD VSS A A1 A0 A A A Document #: 38-05281 Rev. *H Page 5 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Pin Configurations (continued) 209-Ball FBGA (14 x 22 x 1.76 mm) Pinout CY7C1487V25 (1M × 72) 1 A B C D E F G H J K L M N P R T U V W 2 3 A BWSC BWSH VSS VDDQ VSS VDDQ VSS VDDQ CLK VDDQ VSS VDDQ VSS 4 CE2 5 ADSP 6 ADSC 7 ADV A 8 CE3 BWSB 9 A BWSF BWSA VSS VDDQ VSS VDDQ VSS VDDQ NC VDDQ VSS VDDQ VSS VDDQ VSS A A TCK 10 11 DQG DQG DQG DQG DQPG DQC DQC DQC DQC NC DQG DQG DQG DQG DQPC DQC DQC DQC DQC NC DQB DQB DQB DQB DQPF DQF DQF DQF DQF NC DQB DQB DQB DQB DQPB DQF DQF DQF DQF NC BWSG NC/288M BWE BWSD NC/144M CE1 NC VDDQ VSS VDDQ VSS VDDQ NC VDDQ VSS VDDQ VSS VDDQ NC A A TDI NC/1G VDD VSS VDD VSS VDD VSS VDD VSS VDD VSS VDD NC A A A OE VDD NC NC NC NC VSS NC NC NC ZZ VDD MODE A A1 A0 NC/576M BWSE GW VDD VSS VDD VSS VDD VSS VDD VSS VDD VSS VDD NC A A A NC VDDQ VSS VDDQ VSS VDDQ NC VDDQ VSS VDDQ VSS VDDQ NC A A TDO DQH DQH DQH DQH DQPD DQD DQD DQD DQD DQH DQH DQH DQH DQA DQA DQA DQA DQPA DQE DQE DQE DQE DQA DQA DQA DQA DQPE DQE DQE DQE DQE DQPH VDDQ DQD DQD DQD DQD VSS A A TMS Document #: 38-05281 Rev. *H Page 6 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Pin Definitions Pin Name A0, A1, A I/O InputSynchronous InputSynchronous InputSynchronous InputClock InputSynchronous InputSynchronous InputSynchronous InputAsynchronous Description Address Inputs used to select one of the address locations. Sampled at the rising edge of the CLK if ADSP or ADSC is active LOW, and CE1, CE2, and CE3 are sampled active. A[1:0] feed the 2-bit counter. Byte Write Select Inputs, active LOW. Qualified with BWE to conduct byte writes to the SRAM. Sampled on the rising edge of CLK. Global Write Enable Input, active LOW. When asserted LOW on the rising edge of CLK, a global write is conducted (ALL bytes are written, regardless of the values on BWX and BWE). Clock Input. Used to capture all synchronous inputs to the device. Also used to increment the burst counter when ADV is asserted LOW, during a burst operation. Chip Enable 1 Input, active LOW. Sampled on the rising edge of CLK. Used in conjunction with CE2 and CE3 to select/deselect the device. ADSP is ignored if CE1 is HIGH. CE1 is sampled only when a new external address is loaded. Chip Enable 2 Input, active HIGH. Sampled on the rising edge of CLK. Used in conjunction with CE1 and CE3 to select/deselect the device. CE2 is sampled only when a new external address is loaded. Chip Enable 3 Input, active LOW. Sampled on the rising edge of CLK. Used in conjunction with CE1 and CE2 to select/deselect the device. CE3 is sampled only when a new external address is loaded. Output Enable, asynchronous input, active LOW. Controls the direction of the IO pins. When LOW, the IO pins behave as outputs. When deasserted HIGH, IO pins are tri-stated, and act as input data pins. OE is masked during the first clock of a read cycle when emerging from a deselected state. Advance Input signal, sampled on the rising edge of CLK. When asserted, it automatically increments the address in a burst cycle. Address Strobe from Processor, sampled on the rising edge of CLK, active LOW. When asserted LOW, addresses presented to the device are captured in the address registers. A[1:0] are also loaded into the burst counter. When ADSP and ADSC are both asserted, only ADSP is recognized. ASDP is ignored when CE1 is deasserted HIGH. Address Strobe from Controller, sampled on the rising edge of CLK, active LOW. When asserted LOW, addresses presented to the device are captured in the address registers. A[1:0] are also loaded into the burst counter. When ADSP and ADSC are both asserted, only ADSP is recognized. Byte Write Enable Input, active LOW. Sampled on the rising edge of CLK. This signal must be asserted LOW to conduct a byte write. ZZ “sleep” Input, active HIGH. When asserted HIGH places the device in a non-time-critical “sleep” condition with data integrity preserved. For normal operation, this pin must be LOW or left floating. ZZ pin has an internal pull down. Bidirectional Data IO Lines. As inputs, they feed into an on-chip data register that is triggered by the rising edge of CLK. As outputs, they deliver the data contained in the memory location specified by the addresses presented during the previous clock rise of the read cycle. The direction of the pins is controlled by OE. When OE is asserted LOW, the pins behave as outputs. When HIGH, DQs and DQPX are placed in a tri-state condition. The outputs are automatically tri-stated during the data portion of a write sequence, during the first clock when emerging from a deselected state, and when the device is deselected, regardless of the state of OE. Bidirectional Data Parity IO Lines. Functionally, these signals are identical to DQs. During write sequences, DQPx is controlled by BWX, correspondingly. BWA, BWB, BWC, BWD, BWE, BWF, BWG, BWH GW CLK CE1 CE2 CE3 OE ADV ADSP InputSynchronous InputSynchronous ADSC InputSynchronous BWE ZZ InputSynchronous InputAsynchronous I/OSynchronous DQs DQPX I/OSynchronous Document #: 38-05281 Rev. *H Page 7 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Pin Definitions (continued) Pin Name VDD VDDQ VSS VSSQ [2] I/O Power Supply I/O Power Supply Ground I/O Ground Input-Static Description Power supply inputs to the core of the device. Power supply for the I/O circuitry. Ground for the core of the device. Ground for the I/O circuitry. Selects Burst Order. When tied to GND selects linear burst sequence. When tied to VDD or left floating selects interleaved burst sequence. This is a strap pin and should remain static during device operation. Mode Pin has an internal pull up. Serial data-out to the JTAG circuit. Delivers data on the negative edge of TCK. If the JTAG feature is not used, this pin should be left unconnected. This pin is not available on TQFP packages. Serial data-in to the JTAG circuit. Sampled on the rising edge of TCK. If the JTAG feature is not used, this pin can be left floating or connected to VDD through a pull up resistor. This pin is not available on TQFP packages. Serial data-in to the JTAG circuit. Sampled on the rising edge of TCK. If the JTAG feature is not used, this pin can be disconnected or connected to VDD. This pin is not available on TQFP packages. Clock input to the JTAG circuitry. If the JTAG feature is not used, this pin must be connected to VSS. This pin is not available on TQFP packages. No Connects. Not internally connected to the die. 144M, 288M, 576M, and 1G are address expansion pins are not internally connected to the die. MODE TDO JTAG Serial Output Synchronous JTAG Serial Input Synchronous JTAG Serial Input Synchronous JTAG Clock - TDI TMS TCK NC Note 2. Applicable for TQFP package. For BGA package VSS serves as ground for the core and the IO circuitry. Document #: 38-05281 Rev. *H Page 8 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Functional Overview All synchronous inputs pass through input registers controlled by the rising edge of the clock. Maximum access delay from the clock rise (t CDV) is 6.5 ns (133-MHz device). The CY7C1481V25/CY7C1483V25/CY7C1487V25 supports secondary cache in systems using either a linear or interleaved burst sequence. The interleaved burst order supports Pentium and i486™ processors. The linear burst sequence is suited for processors that use a linear burst sequence. The burst order is user selectable, and is determined by sampling the MODE input. Accesses can be initiated with either the Processor Address Strobe (ADSP) or the Controller Address Strobe (ADSC). Address advancement through the burst sequence is controlled by the ADV input. A two-bit on-chip wraparound burst counter captures the first address in a burst sequence and automatically increments the address for the rest of the burst access. Byte write operations are qualified with the Byte Write Enable (BWE) and Byte Write Select (BWX) inputs. A Global Write Enable (GW) overrides all byte write inputs and writes data to all four bytes. All writes are simplified with on-chip synchronous self-timed write circuitry. Three synchronous Chip Selects (CE1, CE2, CE3[1]) and an asynchronous Output Enable (OE) provide easy bank selection and output tri-state control. ADSP is ignored if CE1 is HIGH. Single Read Accesses A single read access is initiated when the following conditions are satisfied at clock rise: (1) CE1, CE2, and CE3[1] are all asserted active, and (2) ADSP or ADSC is asserted LOW (if the access is initiated by ADSC, the write inputs must be deasserted during this first cycle). The address presented to the address inputs is latched into the address register and the burst counter/control logic and presented to the memory core. If the OE input is asserted LOW, the requested data is available at the data outputs a maximum of tCDV after clock rise. ADSP is ignored if CE1 is HIGH. Single Write Accesses Initiated by ADSP This access is initiated when the following conditions are satisfied at clock rise: (1) CE1, CE2, CE3[1] are all asserted active, and (2) ADSP is asserted LOW. The addresses presented are loaded into the address register and the burst inputs (GW, BWE, and BWX) are ignored during this first clock cycle. If the write inputs are asserted active on the next clock rise, the appropriate data is latched and written into the device. The device allows byte writes. All IOs are tri-stated during a byte write. Because this is a common IO device, the asynchronous OE input signal must be deasserted and the IOs must be tri-stated prior to the presentation of data to DQs. As a safety precaution, the data lines are tri-stated after a write cycle is detected, regardless of the state of OE. Single Write Accesses Initiated by ADSC This write access is initiated when the following conditions are satisfied at clock rise: (1) CE1, CE2, and CE3[1] are all asserted active, (2) ADSC is asserted LOW, (3) ADSP is deasserted HIGH, and (4) the write input signals (GW, BWE, and BWX) indicate a write access. ADSC is ignored if ADSP is active LOW. The addresses presented are loaded into the address register and the burst counter/control logic and delivered to the memory core. The information presented to DQS is written into the specified address location. The device allows byte writes. All IOs are tri-stated when a write is detected, even a byte write. Because this is a common IO device, the asynchronous OE input signal must be deasserted and the IOs must be tri-stated before the presentation of data to DQs. As a safety precaution, the data lines are tri-stated after a write cycle is detected, regardless of the state of OE. Burst Sequences The CY7C1481V25/CY7C1483V25/CY7C1487V25 provides an on-chip two-bit wraparound burst counter inside the SRAM. The burst counter is fed by A[1:0], and can follow either a linear or interleaved burst order. The burst order is determined by the state of the MODE input. A LOW on MODE selects a linear burst sequence. A HIGH on MODE selects an interleaved burst order. Leaving MODE unconnected causes the device to default to an interleaved burst sequence. 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 integrity 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. CE1, CE2, CE3[1], ADSP, and ADSC must remain inactive for the duration of tZZREC after the ZZ input returns LOW. Interleaved Burst Address Table (MODE = Floating or VDD) First Address A1: A0 00 01 10 11 Second Address A1: A0 01 00 11 10 Third Address A1: A0 10 11 00 01 Fourth Address A1: A0 11 10 01 00 Linear Burst Address Table (MODE = GND) First Address A1: A0 00 01 10 11 Second Address A1: A0 01 10 11 00 Third Address A1: A0 10 11 00 01 Fourth Address A1: A0 11 00 01 10 Document #: 38-05281 Rev. *H Page 9 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 ZZ Mode Electrical Characteristics Parameter IDDZZ tZZS tZZREC tZZI tRZZI Description Sleep mode standby current Device operation to ZZ ZZ recovery time ZZ active to sleep current ZZ Inactive to exit sleep current Test Conditions ZZ > VDD – 0.2V ZZ > VDD – 0.2V ZZ < 0.2V This parameter is sampled This parameter is sampled 0 2tCYC 2tCYC Min. Max. 120 2tCYC Unit mA ns ns ns ns Truth Table The truth table for CY7C1481V25, CY7C1483V25, and CY7C1487V25 follows.[3, 4, 5, 6, 7] Cycle Description Deselected Cycle, Power Down Deselected Cycle, Power Down Deselected Cycle, Power Down Deselected Cycle, Power Down Deselected Cycle, Power Down Sleep Mode, Power Down Read Cycle, Begin Burst Read Cycle, Begin Burst Write Cycle, Begin Burst Read Cycle, Begin Burst Read Cycle, Begin Burst Read Cycle, Continue Burst Read Cycle, Continue Burst Read Cycle, Continue Burst Read Cycle, Continue Burst Write Cycle, Continue Burst Write Cycle, Continue Burst Read Cycle, Suspend Burst Read Cycle, Suspend Burst Read Cycle, Suspend Burst Read Cycle, Suspend Burst Write Cycle, Suspend Burst Write Cycle, Suspend Burst ADDRESS CE CE CE ZZ 1 2 3 Used None None None None None None External External External External External Next Next Next Next Next Next Current Current Current Current Current Current H L L L X X L L L L L X X H H X H X X H H X H X L X L X X H H H H H X X X X X X X X X X X X X X H X X X L L L L L X X X X X X X X X X X X L L L L L H L L L L L L L L L L L L L L L L L ADSP X L L H H X L L H H H H H X X H X H H X X H X ADSC L X X L L X X X L L L H H H H H H H H H H H H ADV WRITE X X X X X X X X X X X L L L L L L H H H H H H X X X X X X X X L H H H H H H L L H H H H L L OE X X X X X X L H X L H L H L H X X L H L H X X CLK L-H L-H L-H L-H L-H X L-H L-H L-H L-H L-H L-H L-H L-H L-H L-H L-H L-H L-H L-H L-H L-H L-H DQ Tri-State Tri-State Tri-State Tri-State Tri-State Tri-State Q Tri-State D Q Tri-State Q Tri-State Q Tri-State D D Q Tri-State Q Tri-State D D Notes 3. X=”Don't Care,” H = Logic HIGH, L = Logic LOW. 4. WRITE = L when any one or more Byte Write enable signals and BWE = L or GW = L. WRITE = H when all Byte write enable signals, BWE, GW = H. 5. The DQ pins are controlled by the current cycle and the OE signal. OE is asynchronous and is not sampled with the clock. 6. The SRAM always initiates a read cycle when ADSP is asserted, regardless of the state of GW, BWE, or BWX. Writes may occur only on subsequent clocks after the ADSP or with the assertion of ADSC. As a result, OE must be driven HIGH prior to the start of the write cycle to enable the outputs to tri-state. OE is a don't care for the remainder of the write cycle. 7. OE is asynchronous and is not sampled with the clock rise. It is masked internally during write cycles. During a read cycle all data bits are tri-state when OE is inactive or when the device is deselected, and all data bits behave as output when OE is active (LOW). Document #: 38-05281 Rev. *H Page 10 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Truth Table for Read/Write The following is a Truth Table for Read/Write for the CY7C1481V25.[3, 8] Function Read Read Write Byte A (DQA, DQPA) Write Byte B(DQB, DQPB) Write Bytes A, B (DQA, DQB, DQPA, DQPB) Write Byte C (DQC, DQPC) Write Bytes C, A (DQC, DQA, DQPC, DQPA) Write Bytes C, B (DQC, DQB, DQPC, DQPB) Write Bytes C, B, A (DQC, DQB, DQA, DQPC, DQPB, DQPA) Write Byte D (DQD, DQPD) Write Bytes D, A (DQD, DQA, DQPD, DQPA) Write Bytes D, B (DQD, DQA, DQPD, DQPA) Write Bytes D, B, A (DQD, DQB, DQA, DQPD, DQPB, DQPA) Write Bytes D, B (DQD, DQB, DQPD, DQPB) Write Bytes D, B, A (DQD, DQC, DQA, DQPD, DQPC, DQPA) Write Bytes D, C, A (DQD, DQB, DQA, DQPD, DQPB, DQPA) Write All Bytes Write All Bytes GW H H H H H H H H H H H H H H H H H L BWE H L L L L L L L L L L L L L L L L X BWD X H H H H H H H H L L L L L L L L X BWC X H H H H L L L L H H H H L L L L X BWB X H H L L H H L L H H L L H H L L X BWA X H L H L H L H L H L H L H L H L X Truth Table for Read/Write The following is a Truth Table for Read/Write for the CY7C1481V25.[3, 8] Function (CY7C1483V25) Read Read Write Byte A - (DQA and DQPA) Write Byte B - (DQB and DQPB) Write All Bytes Write All Bytes GW H H H H H L BWE H L L L L X BWB X H H L L X BWA X H L H L X Truth Table for Read/Write The following is a Truth Table for Read/Write for the CY7C1481V25. [3, 8] Function (CY7C1487V25) Read Read Write Byte x – (DQx and DQPx) Write All Bytes Write All Bytes GW H H H H L BWE H L L L X BWx[9] X All BW = H L All BW = L X Notes 8. Table only includes a partial listing of the byte write combinations. Any combination of BWX is valid. Appropriate write is done based on which byte write is active. 9. BWx represents any byte write signal BWX. To enable any byte write BWx, a Logic LOW signal must be applied at clock rise. Any number of byte writes can be enabled at the same time for any given write. Document #: 38-05281 Rev. *H Page 11 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 IEEE 1149.1 Serial Boundary Scan (JTAG) The CY7C1481V25/CY7C1483V25/CY7C1487V25 incorporates a serial boundary scan test access port (TAP). This port operates in accordance with IEEE Standard 1149.1-1990 but does not have the set of functions required for full 1149.1 compliance. These functions from the IEEE specification are excluded because their inclusion places an added delay in the critical speed path of the SRAM. Note that the TAP controller functions in a manner that does not conflict with the operation of other devices using 1149.1 fully compliant TAPs. The TAP operates using JEDEC-standard 2.5V or 1.8V I/O logic levels. The CY7C1481V25/CY7C1483V25 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 controller, tie TCK LOW (VSS) to prevent device clocking. TDI and TMS are internally pulled up and may be unconnected. They may alternatively be connected to VDD through a pull up resistor. TDO should be left unconnected. Upon power up, the device comes up in a reset state that does not interfere with the operation of the device. Test MODE SELECT (TMS) The TMS input gives commands to the TAP controller and is sampled on the rising edge of TCK. You can 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 serially inputs information into the registers and can be connected to the input of any of the registers. The register between TDI and TDO is chosen by the instruction that is loaded into the TAP instruction register. For information on loading the instruction register, see the TAP Controller State Diagram. 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 0 Bypass Register 210 TAP Controller State Diagram 1 TEST-LOGIC RESET 0 0 RUN-TEST/ IDLE 1 SELECT DR-SCA N 0 1 CAPTURE-DR 0 SHIFT-DR 1 EXIT1-DR 0 PAUSE-DR 1 0 EXIT2-DR 1 UPDATE-DR 1 0 0 0 1 0 1 1 SELECT IR-SCAN 0 CAPTURE-IR 0 SHIFT-IR 1 EXIT1-IR 0 PAUSE-IR 1 EXIT2-IR 1 UPDATE-IR 1 0 0 1 0 1 TDI Selection Circuitry Instruction Register 31 30 29 . . . 2 1 0 Selection Circuitry TDO Identification Register x. . . . .210 Boundary Scan Register TCK TM S TAP CONTROLLER Performing a TAP Reset To perform a RESET, force TMS HIGH (VDD) 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 between the TDI and TDO balls and enable 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. The 0/1 next to each state represents 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 TCK. All outputs are driven from the falling edge of TCK. Document #: 38-05281 Rev. *H Page 12 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Instruction Register Three-bit instructions can be serially 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” on page 12. At 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. When the TAP controller is in the Capture-IR state, the two least significant bits are loaded with a binary “01” pattern to enable fault isolation of the board-level 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 enables data to be shifted through the SRAM with minimal delay. The bypass register is set LOW (VSS) when the BYPASS instruction is executed. Boundary Scan Register The boundary scan register is connected to all the input and bidirectional balls on the SRAM. The x36 configuration has a 73-bit-long register, and the x18 configuration has a 54-bit-long register. The boundary scan register is loaded with the contents of the RAM IO ring when the TAP controller 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 instructions can be used to capture the contents of the I/O ring. The Boundary Scan Order tables show the order in which the bits are connected. Each bit corresponds to one of the bumps on the SRAM package. The MSB of the register is connected 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 state 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 register has a vendor code and other information described in “Identification Register Definitions” on page 15. TAP Instruction Set Overview Eight different instructions are possible with the three-bit instruction register. All combinations are listed in “Identification Codes” on page 16. Three of these instructions are listed as RESERVED and must not be used. The other five instructions are described in detail below. The TAP controller used in this SRAM is not fully compliant to the 1149.1 convention because some of the mandatory 1149.1 instructions are not fully implemented. The TAP controller cannot be used to load address data or control signals into the SRAM and cannot preload the IO buffers. The SRAM does not implement the 1149.1 commands EXTEST or INTEST or the PRELOAD portion of Document #: 38-05281 Rev. *H SAMPLE/PRELOAD; rather, it performs a capture of the IO ring when these instructions are executed. 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 must be moved into the Update-IR state. EXTEST EXTEST is a mandatory 1149.1 instruction that is to be executed whenever the instruction register is loaded with all 0s. EXTEST is not implemented in this SRAM TAP controller, and therefore this device is not compliant to 1149.1. The TAP controller does recognize an all-0 instruction. When an EXTEST instruction is loaded into the instruction register, the SRAM responds as if a SAMPLE/PRELOAD instruction has been loaded. There is one difference between the two instructions. Unlike the SAMPLE/PRELOAD instruction, EXTEST places the SRAM outputs in a High-Z 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 loaded into the instruction register upon power up or whenever the TAP controller is in a test logic reset state. SAMPLE Z The SAMPLE Z instruction causes the boundary scan register to be connected between the TDI and TDO balls when the TAP controller is in a Shift-DR state. It also places all SRAM outputs into a High-Z state. SAMPLE/PRELOAD SAMPLE/PRELOAD is a 1149.1 mandatory instruction. The PRELOAD portion of this instruction is not implemented, so the device TAP controller is not fully 1149.1 compliant. When the SAMPLE/PRELOAD instruction is loaded into the instruction register and the TAP controller is in the Capture-DR state, a snapshot of data on the inputs and bidirectional balls is captured in the boundary scan register. Be aware that the TAP controller clock can only operate at a frequency up to 10 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 may undergo a transition. The TAP may then try 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 will be 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 time (tCS plus tCH). Page 13 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 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 other signals and simply ignore the value of the CLK captured in the boundary scan register. Once 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 balls. Note that because the PRELOAD part of the command is not implemented, putting the TAP to the Update-DR state while performing a SAMPLE/PRELOAD instruction has the same effect as the Pause-DR command. 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 balls. The advantage of the BYPASS instruction is that it shortens the boundary scan path when multiple devices are connected together on a board. Reserved These instructions are not implemented but are reserved for future use. Do not use these instructions. TAP Timing 1 Test Clock (TCK ) t TM SS 2 3 4 5 6 t TH t TM SH t TL t CY C Test M ode Select (TM S) t TDIS t TDIH Test Data-In (TDI) t TDOV t TDOX Test Data-Out (TDO) DON’T CA RE UNDEFINED TAP AC Switching Characteristics Over the Operating Range[10, 11] Parameter Clock tTCYC tTF tTH tTL tTDOV tTDOX tTMSS tTDIS tCS Hold Times tTMSH tTDIH tCH TMS hold after TCK Clock Rise TDI Hold after Clock Rise Capture Hold after Clock Rise 5 5 5 ns ns ns TCK Clock Cycle Time TCK Clock Frequency TCK Clock HIGH time TCK Clock LOW time TCK Clock LOW to TDO Valid TCK Clock LOW to TDO Invalid TMS Setup to TCK Clock Rise TDI Setup to TCK Clock Rise Capture Setup to TCK Rise 0 5 5 5 20 20 10 50 20 ns MHz ns ns ns ns ns ns Description Min Max Unit Output Times Setup Times Notes 10. tCS and tCH refer to the setup and hold time requirements of latching data from the boundary scan register. 11. Test conditions are specified using the load in TAP AC Test Conditions. tR/tF = 1 ns. Document #: 38-05281 Rev. *H Page 14 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 2.5V TAP AC Test Conditions Input pulse levels ................................................ VSS to 2.5V Input rise and fall time..................................................... 1 ns Input timing reference levels .........................................1.25V Output reference levels.................................................1.25V Test load termination supply voltage.............................1.25V 1.8V TAP AC Test Conditions Input pulse levels..................................... 0.2V to VDDQ – 0.2 Input rise and fall time .....................................................1 ns Input timing reference levels........................................... 0.9V Output reference levels .................................................. 0.9V Test load termination supply voltage .............................. 0.9V 2.5V TAP AC Output Load Equivalent 1.25V 50 Ω TDO Z O= 50 Ω 20pF 1.8V TAP AC Output Load Equivalent 0.9V 50 Ω TDO Z O= 50 Ω 20pF TAP DC Electrical Characteristics And Operating Conditions (0°C < TA < +70°C; VDD = 2.5V ±0.125V unless otherwise noted)[12] Parameter VOH1 VOH2 VOL1 VOL2 VIH VIL IX Description Output HIGH Voltage Output HIGH Voltage Output LOW Voltage Output LOW Voltage Input HIGH Voltage Input LOW Voltage Input Load Current GND ≤ VI ≤ VDDQ IOH = –1.0 mA IOH = –100 µA IOL = 1.0 mA IOL = 100 µA Test Conditions VDDQ = 2.5V VDDQ = 2.5V VDDQ = 1.8V VDDQ = 2.5V VDDQ = 2.5V VDDQ = 1.8V VDDQ = 2.5V VDDQ = 1.8V VDDQ = 2.5V VDDQ = 1.8V 1.7 1.26 –0.3 –0.3 –5 Min 1.7 2.1 1.6 0.4 0.2 0.2 VDD + 0.3 VDD + 0.3 0.7 0.36 5 Max Unit V V V V V V V V V V µA Identification Register Definitions Instruction Field Revision Number (31:29) Device Depth (28:24) Architecture/Memory Type(23:18) Bus Width/Density (17:12) Cypress JEDEC ID Code (11:1) ID Register Presence Indicator (0) CY7C1481V25 (2M x 36) 000 01011 000001 100100 00000110100 1 CY7C1483V25 (4M x18) 000 01011 000001 010100 00000110100 1 CY7C1487V25 (1M x72) 000 01011 000001 110100 00000110100 1 Description Describes the version number Reserved for Internal Use Defines memory type and architecture Defines width and density Enables unique identification of SRAM vendor Indicates the presence of an ID register Note 12. All voltages refer to VSS (GND). Document #: 38-05281 Rev. *H Page 15 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Scan Register Sizes Register Name Instruction Bypass ID Boundary Scan Order -165 FBGA Boundary Scan Order -209 BGA Bit Size (X36) 3 1 32 73 Bit Size (X18) 3 1 32 54 Bit Size (X72) 3 1 32 112 Identification Codes Instruction EXTEST IDCODE SAMPLE Z RESERVED SAMPLE/PRELOAD RESERVED RESERVED BYPASS Code 000 001 010 011 100 101 110 111 Captures IO ring contents. Loads the ID register with the vendor ID code and places the register between TDI and TDO. This operation does not affect SRAM operations. Captures IO ring contents. Places the boundary scan register between TDI and TDO. Forces all SRAM output drivers to a High-Z state. Do Not Use: This instruction is reserved for future use. Captures IO ring contents. Places the boundary scan register between TDI and TDO. Does not affect SRAM operation. Do Not Use: This instruction is reserved for future use. Do Not Use: This instruction is reserved for future use. Places the bypass register between TDI and TDO. This operation does not affect SRAM operations. Description Boundary Scan Exit Order (2M x 36) Bit # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 165-Ball ID C1 D1 E1 D2 E2 F1 G1 F2 G2 J1 K1 L1 J2 M1 N1 K2 L2 M2 R1 R2 Bit # 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 165-Ball ID R3 P2 R4 P6 R6 N6 P11 R8 P3 P4 P8 P9 P10 R9 R10 R11 N11 M11 L11 M10 Bit # 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 165-Ball ID L10 K11 J11 K10 J10 H11 G11 F11 E11 D10 D11 C11 G10 F10 E10 A10 B10 A9 B9 A8 Bit # 61 62 63 64 65 66 67 68 69 70 71 72 73 165-Ball ID B8 A7 B7 B6 A6 B5 A5 A4 B4 B3 A3 A2 B2 Document #: 38-05281 Rev. *H Page 16 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Boundary Scan Exit Order (4M x 18) Bit # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 165-Ball ID D2 E2 F2 G2 J1 K1 L1 M1 N1 R1 R2 R3 P2 R4 P6 R6 N6 P11 Bit # 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 165-Ball ID R8 P3 P4 P8 P9 P10 R9 R10 R11 M10 L10 K10 J10 H11 G11 F11 E11 D11 Bit # 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 165-Ball ID C11 A11 A10 B10 A9 B9 A8 B8 A7 B7 B6 A6 B5 A4 B3 A3 A2 B2 Document #: 38-05281 Rev. *H Page 17 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Boundary Scan Exit Order (1M x 72) Bit # 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 28 209-Ball ID A1 A2 B1 B2 C1 C2 D1 D2 E1 E2 F1 F2 G1 G2 H1 H2 J1 J2 L1 L2 M1 M2 N1 N2 P1 P2 R2 R1 Bit # 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 209-Ball ID T1 T2 U1 U2 V1 V2 W1 W2 T6 V3 V4 U4 W5 V6 W6 U3 U9 V5 U5 U6 W7 V7 U7 V8 V9 W11 W10 V11 Bit # 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 209-Ball ID V10 U11 U10 T11 T10 R11 R10 P11 P10 N11 N10 M11 M10 L11 L10 P6 J11 J10 H11 H10 G11 G10 F11 F10 E10 E11 D11 D10 Bit # 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 209-Ball ID C11 C10 B11 B10 A11 A10 A9 U8 A7 A5 A6 D6 B6 D7 K3 A8 B4 B3 C3 C4 C8 C9 B9 B8 A4 C6 B7 A3 Document #: 38-05281 Rev. *H Page 18 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Maximum Ratings Exceeding the maximum ratings may impair the useful life of the device. These 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 VDD Relative to GND........ –0.3V to +3.6V Supply Voltage on VDDQ Relative to GND ...... –0.3V to +VDD DC Voltage Applied to Outputs in Tri-State........................................... –0.5V to VDDQ + 0.5V DC Input Voltage....................................–0.5V to VDD + 0.5V Current into Outputs (LOW)......................................... 20 mA Static Discharge Voltage........................................... >2001V (MIL-STD-883, Method 3015) Latch Up Current .................................................... >200 mA Operating Range Range Commercial Industrial Ambient Temperature 0°C to +70°C –40°C to +85°C VDD VDDQ 2.5V –5%/+5% 1.7V to VDD Electrical Characteristics Over the Operating Range[13, 14] Parameter VDD VDDQ VOH VOL VIH VIL IX Description Power Supply Voltage IO Supply Voltage Output HIGH Voltage Output LOW Voltage Input HIGH Voltage[13] Input LOW Voltage[13] for 2.5V IO for 1.8V IO for 2.5V IO, IOH = –1.0 mA for 1.8V IO, IOH = –100 µA for 2.5V IO, IOL = 1.0 mA for 1.8V IO, IOL = 100 µA for 2.5V IO for 1.8V IO for 2.5V IO for 1.8V IO Input Leakage Current except ZZ and MODE GND ≤ VI ≤ VDDQ 1.7 1.26 –0.3 –0.3 –5 –30 5 –5 30 –5 5 305 275 170 170 120 7.5 ns cycle, 133 MHz 10 ns cycle, 100 MHz 7.5 ns cycle, 133 MHz 10 ns cycle, 100 MHz All speeds Test Conditions Min 2.375 2.375 1.7 2.0 1.6 0.4 0.2 VDD + 0.3V VDD + 0.3V 0.7 0.36 5 Max 2.625 VDD 1.9 Unit V V V V V V V V V V V µA µA µA µA µA µA mA mA mA mA mA Input Current of MODE Input = VSS Input = VDD Input Current of ZZ IOZ IDD ISB1 ISB2 ISB3 ISB4 Input = VSS Input = VDD Output Leakage Current GND ≤ VI ≤ VDDQ, Output Disabled VDD Operating Supply Current Automatic CE Power Down Current—TTL Inputs VDD = Max., IOUT = 0 mA, f = fMAX = 1/tCYC Max. VDD, Device Deselected, VIN ≥ VIH or VIN ≤ VIL, f = fMAX, inputs switching Automatic CE Max. VDD, Device Deselected, Power Down VIN ≥ VDD – 0.3V or VIN ≤ 0.3V, Current—CMOS Inputs f = 0, inputs static Automatic CE Max. VDD, Device Deselected, 7.5 ns cycle, 133 MHz Power Down VIN ≥ VDDQ – 0.3V or VIN ≤ 0.3V, 10 ns cycle, 100 MHz Current—CMOS Inputs f = fMAX, inputs switching Automatic CE Power Down Current—TTL Inputs Max. VDD, Device Deselected, VIN ≥ VDD – 0.3V or VIN ≤ 0.3V, f = 0, inputs static All Speeds 170 170 135 mA mA mA Notes 13. Overshoot: VIH(AC) < VDD + 1.5V (Pulse width less than tCYC/2), undershoot: VIL(AC) > –2V (Pulse width less than tCYC/2). 14. TPower-up: Assumes a linear ramp from 0V to VDD(min.) within 200 ms. During this time VIH < VDD and VDDQ < VDD. Document #: 38-05281 Rev. *H Page 19 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Capacitance[15] Parameter CADDRESS CDATA CCTRL CCLK CI/O Description Address Input Capacitance Data Input Capacitance Control Input Capacitance Clock Input Capacitance Input/Output Capacitance Test Conditions TA = 25°C, f = 1 MHz, VDD = 2.5V VDDQ = 2.5V 100 TQFP Package 6 5 8 6 5 165 FBGA Package 6 5 8 6 5 209 FBGA Package 6 5 8 6 5 Unit pF pF pF pF pF Thermal Resistance[15] Parameter ΘJA ΘJC Description Thermal Resistance (Junction to Ambient) Thermal Resistance (Junction to Case) Test Conditions Test conditions follow standard test methods and procedures for measuring thermal impedance, per EIA/JESD51. 100 TQFP Package 24.63 2.28 165 FBGA Package 16.3 2.1 209 FBGA Package 15.2 1.7 Unit °C/W °C/W AC Test Loads and Waveforms 2.5V I/O Test Load OUTPUT Z0 = 50Ω 2.5V OUTPUT RL = 50Ω R = 1667Ω VDDQ 5 pF GND R = 1583Ω 10% ALL INPUT PULSES 90% 90% 10% ≤ 1 ns VL = 1.25V ≤ 1 ns (a) 1.8V I/O Test Load OUTPUT Z0 = 50Ω 1.8V INCLUDING JIG AND SCOPE (b) (c) R = 14KΩ VDDQ-0.2 5 pF 0.2 R =14KΩ 10% ≤ 1 ns ALL INPUT PULSES 90% 90% 10% ≤ 1 ns OUTPUT RL = 50Ω VL = 0.9V (a) INCLUDING JIG AND SCOPE (b) (c) Note 15. Tested initially and after any design or process change that may affect these parameters. Document #: 38-05281 Rev. *H Page 20 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Switching Characteristics Over the Operating Range[16, 17] Parameter tPOWER Clock tCYC tCH tCL Output Times tCDV tDOH tCLZ tCHZ tOEV tOELZ tOEHZ Setup Times tAS tADS tADVS tWES tDS tCES Hold Times tAH tADH tWEH tADVH tDH tCEH Address Hold After CLK Rise ADSP, ADSC Hold After CLK Rise GW, BWE, BWX Hold After CLK Rise ADV Hold After CLK Rise Data Input Hold After CLK Rise Chip Enable Hold After CLK Rise 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 ns ns ns ns ns ns Address Setup Before CLK Rise ADSP, ADSC Setup Before CLK Rise ADV Setup Before CLK Rise GW, BWE, BWX Setup Before CLK Rise Data Input Setup Before CLK Rise Chip Enable Setup 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 ns ns ns ns ns ns Data Output Valid After CLK Rise Data Output Hold After CLK Rise Clock to Clock to Low-Z[19, 20, 21] High-Z[19, 20, 21] 0 3.0 2.5 3.0 3.8 3.0 0 4.0 6.5 2.5 3.0 4.5 3.8 8.5 ns ns ns ns ns ns ns Clock Cycle Time Clock HIGH Clock LOW 7.5 2.5 2.5 10 3.0 3.0 ns ns ns Description VDD(Typical) to the first Access[18] 133 MHz Min 1 Max 100 MHz Min 1 Max Unit ms OE LOW to Output Valid OE LOW to Output Low-Z[19, 20, 21] OE HIGH to Output High-Z[19, 20, 21] Notes 16. Timing reference level is 1.25V when VDDQ = 2.5V and is 0.9V when VDDQ = 1.8V. 17. Test conditions shown in (a) of “AC Test Loads and Waveforms” on page 20 unless otherwise noted. 18. This part has a voltage regulator internally; tPOWER is the time that the power needs to be supplied above VDD(minimum) initially, before a read or write operation can be initiated. 19. tCHZ, tCLZ,tOELZ, and tOEHZ are specified with AC test conditions shown in part (b) of “AC Test Loads and Waveforms” on page 20. Transition is measured ± 200 mV from steady-state voltage. 20. At any given voltage and temperature, tOEHZ is less than tOELZ and tCHZ is less than tCLZ 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 conditions. The device is designed to achieve High-Z before Low-Z under the same system conditions 21. This parameter is sampled and not 100% tested. Document #: 38-05281 Rev. *H Page 21 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Timing Diagrams Read Cycle Timing[22] tCYC CLK t CH t CL t ADS tADH ADSP t ADS tADH ADSC t AS tAH ADDRESS A1 t WES t WEH A2 G W, BWE, BW X t CES t CEH Deselect Cycle CE t ADVS t ADVH ADV ADV suspends burst OE t OEV t CLZ t OEHZ t OELZ t CDV t DOH t CHZ Data Out (Q) High-Z Q(A1) t CDV Q(A2) Q(A2 + 1) Q(A2 + 2) Q(A2 + 3) Q(A2) Q(A2 + 1) Q(A2 + 2) Burst wraps around to its initial state Single READ DON’T CARE BURST READ UNDEFINED Note 22. On this diagram, when CE is LOW: CE1 is LOW, CE2 is HIGH and CE3 is LOW. When CE is HIGH: CE1 is HIGH or CE2 is LOW or CE3 is HIGH. Document #: 38-05281 Rev. *H Page 22 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Timing Diagrams (continued) Write Cycle Timing[22, 23] 1 t CYC CLK t CH t CL t ADS tADH ADSP t ADS tADH ADSC extends burst t ADS tADH ADSC t AS tAH ADDRESS A1 A2 Byte write signals are ignored for first cycle when ADSP initiates burst A3 t WES tWEH BWE, BW X t WES t WEH GW t CES tCEH CE t ADVS tADVH ADV ADV suspends burst OE t DS t DH D(A2) D(A2 + 1) D(A2 + 1) D(A2 + 2) D(A2 + 3) D(A3) D(A3 + 1) D(A3 + 2) Data in (D) High-Z t D(A1) OEHZ Data Out (Q) BURST READ Single WRITE BURST WRITE Extended BURST WRITE DON’T CARE UNDEFINED Note 23. Full width write can be initiated by either GW LOW; or by GW HIGH, BWE LOW and BWX LOW. Document #: 38-05281 Rev. *H Page 23 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Timing Diagrams (continued) Read/Write Cycle Timing[22, 24, 25] tCYC CLK t CH t CL t ADS tADH ADSP ADSC t AS tAH ADDRESS A1 A2 A3 t WES t WEH A4 A5 A6 BWE, BW X t CES tCEH CE ADV OE t DS tDH t OELZ Data In (D) Data Out (Q) High-Z t OEHZ D(A3) t CDV D(A5) D(A6) Q(A1) Q(A2) Single WRITE DON’T CARE Q(A4) Q(A4+1) BURST READ UNDEFINED Q(A4+2) Q(A4+3) Back-to-Back WRITEs Back-to-Back READs Notes 24. The data bus (Q) remains in high-Z following a write cycle, unless a new read access is initiated by ADSP or ADSC. 25. GW is HIGH. Document #: 38-05281 Rev. *H Page 24 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Timing Diagrams (continued) ZZ Mode Timing[26, 27] CLK t ZZ t ZZREC ZZ t ZZI I SUPPLY I DDZZ t RZZI DESELECT or READ Only ALL INPUTS (except ZZ) Outputs (Q) High-Z DON’T CARE Notes 26. Device must be deselected when entering ZZ mode. See “Truth Table” on page 10 for all possible signal conditions to deselect the device. 27. DQs are in high-Z when exiting ZZ sleep mode. Document #: 38-05281 Rev. *H Page 25 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Ordering Information Not all of the speed, package and temperature ranges are available. Please contact your local sales representative or visit www.cypress.com for actual products offered. Speed (MHz) 133 Ordering Code CY7C1481V25-133AXC CY7C1483V25-133AXC CY7C1481V25-133BZC CY7C1483V25-133BZC CY7C1481V25-133BZXC 51-85165 165-ball Fine-Pitch Ball Grid Array (15 x 17 x 1.4 mm) Pb-Free CY7C1483V25-133BZXC CY7C1487V25-133BGC CY7C1487V25-133BGXC CY7C1481V25-133AXI CY7C1483V25-133AXI CY7C1481V25-133BZI CY7C1483V25-133BZI CY7C1481V25-133BZXI CY7C1483V25-133BZXI CY7C1487V25-133BGI CY7C1487V25-133BGXI 100 CY7C1481V25-100AXC CY7C1483V25-100AXC CY7C1481V25-100BZC CY7C1483V25-100BZC CY7C1481V25-100BZXC 51-85165 165-ball Fine-Pitch Ball Grid Array (15 x 17 x 1.4 mm) Pb-Free CY7C1483V25-100BZXC CY7C1487V25-100BGC CY7C1487V25-100BGXC CY7C1481V25-100AXI CY7C1483V25-100AXI CY7C1481V25-100BZI CY7C1483V25-100BZI CY7C1481V25-100BZXI CY7C1483V25-100BZXI CY7C1487V25-100BGI CY7C1487V25-100BGXI 51-85167 209-ball Fine-Pitch Ball Grid Array (14 × 22 × 1.76 mm) 209-ball Fine-Pitch Ball Grid Array (14 × 22 × 1.76 mm) Pb-Free 51-85165 165-ball Fine-Pitch Ball Grid Array (15 x 17 x 1.4 mm) Pb-Free 51-85165 165-ball Fine-Pitch Ball Grid Array (15 x 17 x 1.4 mm) 51-85167 209-ball Fine-Pitch Ball Grid Array (14 × 22 × 1.76 mm) 209-ball Fine-Pitch Ball Grid Array (14 × 22 × 1.76 mm) Pb-Free 51-85050 100-pin Thin Quad Flat Pack (14 x 20 x 1.4 mm) Pb-Free lndustrial 51-85165 165-ball Fine-Pitch Ball Grid Array (15 x 17 x 1.4 mm) 51-85167 209-ball Fine-Pitch Ball Grid Array (14 × 22 × 1.76 mm) 209-ball Fine-Pitch Ball Grid Array (14 × 22 × 1.76 mm) Pb-Free 51-85050 100-pin Thin Quad Flat Pack (14 x 20 x 1.4 mm) Pb-Free Commercial 51-85165 165-ball Fine-Pitch Ball Grid Array (15 x 17 x 1.4 mm) Pb-Free 51-85165 165-ball Fine-Pitch Ball Grid Array (15 x 17 x 1.4 mm) 51-85167 209-ball Fine-Pitch Ball Grid Array (14 × 22 × 1.76 mm) 209-ball Fine-Pitch Ball Grid Array (14 × 22 × 1.76 mm) Pb-Free 51-85050 100-pin Thin Quad Flat Pack (14 x 20 x 1.4 mm) Pb-Free Industrial 51-85165 165-ball Fine-Pitch Ball Grid Array (15 x 17 x 1.4 mm) Package Diagram Part and Package Type Operating Range Commercial 51-85050 100-pin Thin Quad Flat Pack (14 x 20 x 1.4 mm) Pb-Free Document #: 38-05281 Rev. *H Page 26 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Package Diagrams Figure 1. 100-Pin Thin Plastic Quad Flatpack (14 x 20 x 1.4 mm), 51-85050 16.00±0.20 14.00±0.10 100 1 81 80 1.40±0.05 0.30±0.08 22.00±0.20 20.00±0.10 0.65 TYP. 30 31 50 51 12°±1° (8X) SEE DETAIL A 0.20 MAX. 1.60 MAX. 0° MIN. SEATING PLANE 0.25 GAUGE PLANE STAND-OFF 0.05 MIN. 0.15 MAX. NOTE: 1. JEDEC STD REF MS-026 2. BODY LENGTH DIMENSION DOES NOT INCLUDE MOLD PROTRUSION/END FLASH MOLD PROTRUSION/END FLASH SHALL NOT EXCEED 0.0098 in (0.25 mm) PER SIDE BODY LENGTH DIMENSIONS ARE MAX PLASTIC BODY SIZE INCLUDING MOLD MISMATCH 3. DIMENSIONS IN MILLIMETERS 0°-7° R 0.08 MIN. 0.20 MAX. 0.60±0.15 0.20 MIN. 1.00 REF. DETAIL 51-85050-*B A Document #: 38-05281 Rev. *H 0.10 R 0.08 MIN. 0.20 MAX. Page 27 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Package Diagrams (continued) Figure 2. 165-Ball FBGA (15 x 17 x 1.4 mm), 51-85165 BOTTOM VIEW TOP VIEW Ø0.05 M C PIN 1 CORNER Ø0.25 M C A B PIN 1 CORNER Ø0.45±0.05(165X) 1 2 3 4 5 6 7 8 9 10 11 11 10 9 8 7 6 5 4 3 2 1 A B A B D E F G 1.00 C C D E F G 17.00±0.10 H J K 14.00 H J K M N P R 7.00 L L M N P R A 5.00 10.00 0.53±0.05 0.25 C +0.05 -0.10 1.00 0.35 0.15 C B 0.15(4X) 15.00±0.10 SEATING PLANE C 0.36 1.40 MAX. 51-85165-*A Document #: 38-05281 Rev. *H Page 28 of 30 [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Package Diagrams (continued) Figure 3. 209-Ball FBGA (14 x 22 x 1.76 mm), 51-85167 51-85167-** 486 is a trademark, and Intel and Pentium are registered trademarks of Intel Corporation. PowerPC is a trademark of IBM Corporation. All product and company names mentioned in this document are the trademarks of their respective holders. Document #: 38-05281 Rev. *H Page 29 of 30 © Cypress Semiconductor Corporation, 2002-2007. The information contained herein is subject to change without notice. Cypress Semiconductor 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 with 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. [+] [+] Feedback CY7C1481V25 CY7C1483V25 CY7C1487V25 Document History Page Document Title: CY7C1481V25/CY7C1483V25/CY7C1487V25 72-Mbit (2M x 36/4M x 18/1M x 72) Flow-Through SRAM Document Number: 38-05281 REV. ** *A ECN NO. Issue Date Orig. of Change 114671 118283 08/12/02 01/27/03 PKS HGK New Data Sheet Updated Ordering Information Updated the features for package offering Changed from Advance Information to Preliminary Changed timing diagrams Changed logic block diagrams Modified Functional Description Modified “Functional Overview” section Added boundary scan order for all packages Included thermal numbers and capacitance values for all packages Included IDD and ISB values Removed 150-MHz speed grade offering Changed package outline for 165FBGA package and 209-ball BGA package Removed 119-BGA package offering Removed 117-MHz Speed Bin Changed ΘJA from 16.8 to 24.63 °C/W and ΘJC from 3.3 to 2.28 °C/W for 100 TQFP Package on Page # 22 Added lead-free information for 100-Pin TQFP, 165 FBGA and 209 BGA Packages Added comment of ‘Lead-free BG packages availability’ below the Ordering Information Address expansion pins/balls in the pinouts for all packages are modified as per JEDEC standard Added Address Expansion pins in the Pin Definitions Table Added Industrial Operating Range Modified VOL, VOH test conditions Removed comment of ‘Lead-free BG packages availability’ below the Ordering Information Updated Ordering Information Table Changed address of Cypress Semiconductor Corporation on Page# 1 from “3901 North First Street” to “198 Champion Court” Changed the description of IX from Input Load Current to Input Leakage Current on page# 19 Changed the IX current values of MODE on page # 19 from -5 µA and 30 µA to -30 µA and 5 µA Changed the Ix current values of ZZ on page # 19 from -30 µA and 5 µA to -5 µA and 30 µA Changed VIH < VDD to VIH < VDD on page # 19 Replaced Package Name column with Package Diagram in the Ordering Information table Converted from Preliminary to Final. Added the Maximum Rating for Supply Voltage on VDDQ Relative to GND Changed tTH, tTL from 25 ns to 20 ns and tTDOV from 5 ns to 10 ns in TAP AC Switching Characteristics table Updated the Ordering Information table Corrected the typo in the 209-Ball FBGA pinout. (Corrected the ball name H9 to VSS from VSSQ). Description of Change *B 233368 See ECN NJY *C 299452 See ECN SYT *D 323080 See ECN PCI *E 416193 See ECN NXR *F 470723 See ECN VKN *G *H 486690 1062041 See ECN See ECN VKN VKN/KKVTMP Added footnote #2 related to VSSQ Document #: 38-05281 Rev. *H Page 30 of 30 [+] [+] Feedback