Manuale d’uso / di manutenzione del prodotto CY7C1307BV25 del fabbricante Cypress
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18-Mbit Burst of 4 Pipelined SRAM with Q DR™ Architecture CY7C1307BV25 CY7C1305BV25 Cypress Semiconductor Corpora tion • 198 Champion Cou rt • San Jose , CA 95134-1 709 • 408-943-2 600 Document #: 38-05630 Rev .
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 2 of 21 Selection Guide CY7C1305BV25-167 CY7C1307BV25-167 Unit Maximum Operating Freq uency 167 MHz Maximum Operating Current 400 mA 256Kx18 Array CLK A [17:0] Gen. K K Control Logic Address Register D [17:0] Read Add.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 3 of 21 Pin Configuration 165-ball FBGA (13 x 15 x 1.4 mm ) Pinout CY7C1305BV25 (1M x 18 ) 1 2 3 4 5 678 9 1 0 1 1 A NC GND/ 144M NC/ 36M .
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 4 of 21 Pin Definitions Name I/O Description D [x:0] Input- Synchronous Data input signals, sampled on the ris ing edge of K and K clocks during valid write operations . CY7C1305BV25 – D [17:0] CY7C1307BV25 – D [35:0] WPS Input- Synchronous Write Port Select, active LOW .
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 5 of 21 Introduction Functional Overview The CY7C1305BV25/CY7C1307BV25 are synchro nous pipelined Burst SRAMs equipp ed with both a Read port and a Write port. The Read port is dedicated to Read operations and the Write Port is dedicated to Write operations.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 6 of 21 When deselected, the wr ite po rt will ign ore all i npu ts after the pending Write operations have been completed . Byte Write Operations Byte Write operations are supported by th e CY7C1305BV25.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 7 of 21 T ruth T able [2, 3, 4, 5, 6, 7, 8, 9] Operation K RPS WPS DQ DQ DQ DQ Write Cycle : Load address on the rising edge of K; wait one cycle; input write data on two consecutive K and K rising edges.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 8 of 21 Write Cycl e Descriptions (CY7C1307BV25) [2, 10 ] BWS 0 BWS 1 BWS 2 BWS 3 KK Comment s L L L L L-H – During the Data portion of a Write sequence, all four bytes (D [35:0] ) are written into the device.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 9 of 21 IEEE 1 149.1 Serial Boundary Scan (JT AG) These SRAMs incorporate a serial bo undary scan test access port (T AP) in the FBGA package. This part is fully compliant with IEEE S tandard #1 149 .
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 10 of 21 is loaded into the instruction register upon power-up or whenever the T AP controller is given a test logic reset state.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 1 1 of 21 T AP Controller St ate Diagram [1 1] Note: 1 1. The 0/1 next to each state re presents the value at TMS at th e rising edge of TCK.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 12 of 21 T AP Controller Block Diagram T AP Electrical Characteristics Over the Operating R ange [12, 15, 17] Parameter Description T est Conditions Min. Max. Unit V OH1 Output HIGH V oltage I OH = − 2.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 13 of 21 Output Times t TDOV TCK Clock LOW to TDO V alid 20 ns t TDOX TCK Clock LOW to TDO Invalid 0 ns T AP Timing and T est Conditions [1.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 14 of 21 Scan Register Sizes Register Name Bit Size Instruction 3 Bypass 1 ID 32 Boundary Scan 107 Instruction Codes Instruction Code Description EXTEST 000 Captures the Inpu t/Output ring contents.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 15 of 21 Boundary Scan Order Bit # Bum p ID Bit # Bump ID Bit # Bump ID Bit # Bump ID 0 6R 27 11 H 54 7B 81 3G 1 6P 28 10G 55 6B 82 2G 2 6N.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 16 of 21 Maximum Ratings (Above which the useful life may be impaired.) S torage T e mperature .............. .................. –65°C to + 150°C Ambient T emperature with Power Applied .
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 17 of 21 Cap acit ance [22] Parameter Descript ion T es t Conditions Max. Unit C IN Input Capacitance T A = 25°C, f = 1 MHz, V DD = 2.5V . V DDQ = 1.5V 5p F C CLK Clock Input Capacitance 6 pF C O Output Capacitance 7 pF AC T est Loads and W aveforms 1.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 18 of 21 Switching Characteristics Over the Operating Range [23] Cypress Parameter Consortium Parameter Description 167 MHz Unit Min. Max. t Power [24] V CC (typical) to the First Access Read or Write 10 µ s Cycle Time t CYC t KHKH K Clock and C Clock Cycle T ime 6.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 19 of 21 Switching W aveforms [27, 28, 29] Notes: 27. Q00 refers to output from address A0. Q01 refers to output from the ne xt internal burst address follo wing A0, i.e., A0+1. 28. Outputs are disabled (High- Z) one clock cycle after a NOP .
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 20 of 21 © Cypress Semi con duct or Cor po rati on , 20 06 . The information con t a in ed he re i n is su bject to change wi t hou t n oti ce.
CY7C1307BV25 CY7C1305BV25 Document #: 38-05630 Rev . *A Page 21 of 21 Document History Page Document Title: CY7C1305BV25/CY7C1307BV25 18 -Mb it Burst of Four Pipelined SRAM with QDR™ Architecture Document Number: 38-05630 REV . ECN NO. Issue Date Orig.
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 CY7C1307BV25 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 CY7C1307BV25 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Cypress CY7C1307BV25 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Cypress CY7C1307BV25 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Cypress CY7C1307BV25, 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 CY7C1307BV25.
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 CY7C1307BV25. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Cypress CY7C1307BV25 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.
