Manuale d’uso / di manutenzione del prodotto CY7C1525JV18 del fabbricante Cypress
Vai alla pagina of 26
72-Mbit QDR™-II SRAM 2-W ord Burst Architecture CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Cypress Semiconductor Corpora tion • 198 Champion Court • San Jose , CA 95134-1709 • 408-943-2600 Document #: 001-14435 Rev .
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 2 of 26 Logic Block Diagram (CY7C1510JV18) Logic Block Diagram (CY7C1525JV18) 4M x 8 Array CLK A (21:0) Gen. K K Control Logic Address Register D [7:0] Read Add.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 3 of 26 Logic Block Diagram (CY7C1512JV18) Logic Block Diagram (CY7C1514JV18) 2M x 18 Array CLK A (20:0) Gen. K K Control Logic Address Register D [17:0] Read Add.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 4 of 26 Pin Configuration The pin configuration for CY7C1510JV18, CY7C1525 JV18, CY7C1512JV18, and CY7C1514JV18 follow .
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 5 of 26 CY7C1512JV18 (4 M x 18) 123456789 1 0 1 1 A CQ NC/144M A WPS BWS 1 K NC/288M RPS AA C Q B NC Q9 D9 A N.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 6 of 26 Pin Definitions Pin Name IO Pin Descripti on D [x:0] Input- Synchronous Data Input Signals . Sampled on the rising edge of K and K clocks during valid write operations.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 7 of 26 CQ Echo Clock CQ is Referenced with Respect to C . This is a free-running clock and is synchronized to th e input clock for output data (C) of the QDR-II.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 8 of 26 Functional Overview The CY7C1510JV18, CY7C152 5JV18, CY7C1512JV18, and CY7C1514JV18 are synchronous pipel ined Burst SRAMs with a read port and a write port.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 9 of 26 Echo Clocks Echo clocks are provided on the QD R-II to simplify dat a capture on high-speed systems. T wo echo clocks ar e generated by the QDR-II. CQ is referenced with respect to C and CQ is referenced with respect to C .
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 10 of 26 T ruth T able The truth table for CY7C1510JV18, CY7C1525JV 18, CY7C1512JV18, and CY7C1514JV18 fo llows. [2, 3, 4, 5, 6, 7] Operation K RPS WPS DQ DQ Write Cycle: Load address on the rising ed ge of K ; input write data on K and K rising edges.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 1 1 of 26 Write Cycle Descriptions The write cycle description tabl e for CY7C1525JV18 follows. [2, 8] BWS 0 K K Comments L L–H – During the Data portion of a write sequence, the single byte (D [8:0] ) is writ te n in to the device.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 12 of 26 IEEE 1 149.1 Serial Boundary Scan (JT AG) These SRAMs incorporate a serial boundary scan T est Access Port (T AP) in the FBGA p ackage. This part is fully comp liant with IEEE S tandard #1 149.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 13 of 26 IDCODE The IDCODE instruction loads a vendor-specific, 32-bi t code into the instruction re gister .
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 14 of 26 T AP Controller St ate Diagram The state diagram for the T AP controller follows.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 15 of 26 T AP Controller Block Diagram T AP Electrical Characteristics Over the Operating Range [10, 1 1, 12] Parameter Description T est Conditions Min Max Unit V OH1 Output HIGH V oltage I OH = − 2.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 16 of 26 T AP AC Switching Characteristics Over the Operating Range [13, 14] Parameter Description Min Max Uni.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 17 of 26 Identification R egi ster Definitions Instruction Field Va l u e Description CY7C1510JV18 CY7C1525JV18 CY7C1 512JV18 CY7C1514JV18 Revision Numb er (31:29) 001 001 001 001 V ersion number .
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 18 of 26 Boundary Scan Order Bit # Bump ID Bit # Bump ID Bit # Bump ID Bit # Bump ID 0 6R 28 10G 56 6A 84 1J 1.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 19 of 26 Power Up Sequence in QDR-II SRAM QDR-II SRAMs must be powered up and initialized in a predefined manner to prevent unde fined operations. During Power Up, when the DOFF is tied HIGH, the DLL gets locked after 1024 cycles of st able clock.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 20 of 26 Maximum Ratings Exceeding maximum ratin gs may impair the useful life o f the device. These user guidelines are not teste d. S torage T emperature .....
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 21 of 26 AC Electrical Characteristics Over the Operating Range [1 1] Parameter Description T est Conditio ns Min Ty p Max Unit V IH Input HIGH V oltage V REF + 0.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 22 of 26 Switching Characteristics Over the Operating Range [19, 20] Cypress Parameter Consor tium Parameter D.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 23 of 26 Switching W aveforms Figure 3. Read/Write/Deselect Sequence [2 5, 26, 27 ] K 1 2 34 5 8 10 6 7 K RPS .
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 24 of 26 Ordering Information Not all of the speed, package and temperature ranges are ava ilable. Please contact your local sales representative or visit www .cypress.
CY7C1510JV18, CY7C1525JV18 CY7C1512JV18, CY7C1514JV18 Document #: 001-14435 Rev . *C Page 25 of 26 Package Diagram Figure 4. 165-ball FBGA (15 x 17 x 1.40 mm), 51-85195 A 1 PIN 1 CORNER 17.00±0.10 15.00±0.10 7.00 1.00 Ø0.50 (165X) Ø0.25 M C A B Ø0.
Document #: 001-14435 Rev . *C Revised March 10, 2008 Page 26 of 26 QDR RAMs an d Quad Data Rate RAMs comp rise a new family of product s developed by Cypress, I DT , NEC, R enesas, and Sa msung. All pr oduct and comp any names mentioned i n this documen t are the tr ad emarks of their respe ctive hold er s.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Cypress CY7C1525JV18 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Cypress CY7C1525JV18 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Cypress CY7C1525JV18 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Cypress CY7C1525JV18 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Cypress CY7C1525JV18, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Cypress CY7C1525JV18.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Cypress CY7C1525JV18. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Cypress CY7C1525JV18 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
