Manuale d’uso / di manutenzione del prodotto CY7C1345G del fabbricante Cypress
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CY7C1345G 4-Mbit (128K x 36) Flow Through Sync SRAM Cypress Semiconductor Corpora tion • 198 Champion Court • San Jose , CA 95134-1 709 • 408-943-2600 Document Number: 38-05517 Rev . *E Revised July 15, 2007 Features ■ 128K x 36 common IO ■ 3.
CY7C1345G Document Number: 38-05517 Rev . *E Page 2 of 20 Logic Block Diagram ADDRESS REGISTER BURST COUNTER AND LOGIC CLR Q1 Q0 ENABLE REGISTER SENSE AMPS OUTPUT BUFFERS INPUT REGISTERS MEMORY ARRAY .
CY7C1345G Document Number: 38-05517 Rev . *E Page 3 of 20 Pin Configurations 100-Pin TQFP Pi nout A A A A A 1 A 0 NC/72M NC/36M V SS V DD NC/9M A A A A A A DQP B DQ B V DDQ V SSQ DQ B DQ B DQ B DQ B V.
CY7C1345G Document Number: 38-05517 Rev . *E Page 4 of 20 1 19-Ball BGA Pinout Pin Configurations (continued) 2 34 5 6 7 1 A B C D E F G H J K L M N P R T U V DDQ NC/288M NC/144M DQP C DQ C DQ D DQ C .
CY7C1345G Document Number: 38-05517 Rev . *E Page 5 of 20 Pin Definitions Name IO Description A0, A1, A Input Synchronous Address Inpu ts Used to Select One of the 128K Address L ocations . Sampled a t the rising edge of the CLK if ADSP or ADSC is active LOW , and CE 1 , CE 2 , and CE 3 are sampled active.
CY7C1345G Document Number: 38-05517 Rev . *E Page 6 of 20 Functional Overview All synchronous inputs pass through input re gisters controlled by the rising edge of the clock. Maximum access delay from th e clock rise (t CO ) is 6.5 ns (133 MHz de vice).
CY7C1345G Document Number: 38-05517 Rev . *E Page 7 of 20 Burst Sequences The CY7C1345G provides an on-chip two-bit wrap around burst counter inside th e SRAM. The burst counter is fed by A [1:0] and follows either a linear or interle aved burst order .
CY7C1345G Document Number: 38-05517 Rev . *E Page 8 of 20 T ruth T able The truth table for CY7C1345G follows. [1, 2, 3, 4, 5] Cycle Descriptio n Address Used CE 1 CE 2 CE 3 ZZ ADSP ADSC ADV WRITE OE .
CY7C1345G Document Number: 38-05517 Rev . *E Page 9 of 20 T ruth T able for Read or Write The partial truth t able for read or write follows. [1, 6] Function GW BWE BW D BW C BW B BW A R e a d H HXXXX.
CY7C1345G Document Number: 38-05517 Rev . *E Page 10 of 20 Maximum Ratings Exceeding the maximum ratin gs may shorten the battery life of the device. These user guidelines are not te sted. S torage T emperature ........................ ......... –65°C to +150°C Ambient T emperat ure wit h Power Applied .
CY7C1345G Document Number: 38-05517 Rev . *E Page 1 1 of 20 Cap acit ance T ested initia lly and after any design or process change that may affect these parameters. Parameter Description T est Cond itions 100 TQFP Max 11 9 B G A Max Unit C IN Input Capacitance T A = 25 ° C, f = 1 MHz, V DD = 3.
CY7C1345G Document Number: 38-05517 Rev . *E Page 12 of 20 Switching Characteristics Over the Operating Range [9, 10] Parameter Description –133 –100 Unit Min Max Min Max t POWER V DD (T ypical) to the first Access [1 1] 11 m s Clock t CYC Clock Cycle T ime 7.
CY7C1345G Document Number: 38-05517 Rev . *E Page 13 of 20 Timing Diagrams Figure 1 shows the read cycle timing. [15] Figure 1. Read Cy cle T iming t CYC t CL CLK t ADH t ADS ADDRESS t CH t AH t AS A1.
CY7C1345G Document Number: 38-05517 Rev . *E Page 14 of 20 Figure 2 shows the write cycle timing. [15, 16] Figure 2. Write Cycle T iming Timing Diagrams (continued) t CYC t CL CLK t ADH t ADS ADDRESS .
CY7C1345G Document Number: 38-05517 Rev . *E Page 15 of 20 Figure 3 shows the read and write timing. [16, 17, 18] Figure 3. Read/W rite Timing Timing Diagrams (continued) t CYC t CL CLK t ADH t ADS AD.
CY7C1345G Document Number: 38-05517 Rev . *E Page 16 of 20 Figure 4 shows the ZZ mode timing. [19, 20] Figure 4. ZZ Mode Timing Timing Diagrams (continued) t ZZ I SUPPLY CLK ZZ t ZZREC A LL INPUTS (except ZZ) DON’T CARE I DDZZ t ZZI t RZZI Outputs (Q) High-Z DESELECT or READ Only Notes: 19.
CY7C1345G Document Number: 38-05517 Rev . *E Page 17 of 20 Ordering Information Not all of the speed, package and temperature range s are availabl e. Please contact your local sales representative or visit www .cypress.com for actual products offered.
CY7C1345G Document Number: 38-05517 Rev . *E Page 18 of 20 Package Diagrams Figure 5. 10 0-Pin Thi n Plastic Qu ad Flatpack (14 x 20 x 1 .4 mm), 51-85050 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.
CY7C1345G Document Number: 38-05517 Rev . *E Page 19 of 20 Figure 6. 1 19-Ball BGA (14 x 22 x 2.4 mm), 51-85 1 15 Package Diagrams (continued) 1.27 20.32 2 16 5 4 37 L E A B D C H G F K J U P N M T R 12.00 19.50 30° TYP. 2.40 MAX. A1 CORNER 0.70 REF.
Document Number: 38-05517 Rev . *E Revised July 15, 2007 Page 20 of 20 Intel and Penti um are register ed trademarks and i486 is a trademar k of Intel Corpo ration. All produ ct and compan y names mention ed in this document may be the trad emarks of their respective ho lders .
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 CY7C1345G 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 CY7C1345G - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Cypress CY7C1345G imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Cypress CY7C1345G ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Cypress CY7C1345G, 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 CY7C1345G.
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 CY7C1345G. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Cypress CY7C1345G 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.
