Manuale d’uso / di manutenzione del prodotto CY7C1372DV25 del fabbricante Cypress
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18-Mbit (512K x 36/1M x 18) Pipelined SRAM with NoBL™ Architecture CY7C1370DV25 CY7C1372DV25 Cypress Semiconductor Corpora tion • 198 Champion Cou rt • San Jose , CA 95134-1 709 • 408-943-2 600 Document #: 38-05558 Rev .
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 2 of 27 A0, A1, A C MODE BW a BW b WE CE1 CE2 CE3 OE READ LOGIC DQs DQP a DQP 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 AR.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 3 of 27 Pin Configurations 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 .
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 4 of 27 Pin Configurations (continued) 234 5 6 7 1 A B C D E F G H J K L M N P R T U DQ a V DDQ NC/576 M NC/1G DQ c DQ d DQ c DQ d AA A A A.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 5 of 27 Pin Configurations (continued) 23 4 567 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.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 6 of 27 Pin Definitions Pin Name I/O T ype Pin Description A0 A1 A Input- Synchronous Address Inputs used to select one of the address lo cations . Sampled at the rising edge of the CLK. BW a BW b BW c BW d Input- Synchronous Byte Write Select Inputs, active LOW .
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 7 of 27 Introduction Functional Overview The CY7C1370DV25 and CY7C1 372DV25 are synchronous-pipel ined Burst NoBL SRAMs designed specifi- cally to eliminate wait states during Write/Read transitions.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 8 of 27 signals. The CY7C1370DV25 /CY7C1372DV25 provides byte write capability tha t is describ ed in the W rite Cycle Description table. Asserting the Wr ite Enable input (WE ) with the selected Byte Write S elect (BW ) input will selectively write to only the desired bytes.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 9 of 27 T ruth T able [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.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 10 of 27 IEEE 1 149.1 Serial Boundary Scan (JT AG) The CY7C1370DV25/CY7C1372 DV 25 incorporates a serial boundary scan test access port (T AP).This part is fully compliant with 1 149.1. The T AP operate s using JEDEC-standard 3.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 1 1 of 27 TA P R e g i s t e r s Registers are connected betwe en the TDI and TDO balls and allow data to be scanned into and ou t of the SRAM test circuitry . Only one registe r can be selected at a time through the instruction register .
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 12 of 27 BYP ASS When the BYP ASS instruction is lo aded in the instruction register and the T AP is placed in a Shift-DR state, the bypass register is placed between the TDI and TDO balls.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 13 of 27 T AP AC Switching Characteristics Over the Operating Range [9, 10] Parameter Description Min.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 14 of 27 2.5V T AP AC T est Conditions Input pulse levels ... ............... ........... .............. ..... V SS to 2.5V Input rise and fall time ........... .............. ........... ..
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 15 of 27 Identification Codes Instruction C ode Descript ion EXTEST 000 Captures I/O ring contents. Places the boundary scan register between TDI and TDO. Forces all SRAM outputs to High-Z state.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 16 of 27 165-Ball FBGA Boundary Scan Order [12, 14] Bit # Ball ID Bit # Ball ID Bit # Ball ID 1N 6 3 1 D 1 0 6 1G 1 2N 7 3 2 C 1 1 6 2 D 2 .
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 17 of 27 Maximum Ratings (Above which the useful life may be impaired. For user guide- lines, not tested.) S torage T emperature ............. .............. ...... –65°C to +150°C Ambient T e mperature with Power Applied .
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 18 of 27 Cap acit ance [17] Parameter Descriptio n T es t Conditio ns 100 TQ FP Package 1 19 BGA Package 165 FBGA Package Unit C IN Input Capacitance T A = 25 ° C, f = 1 MHz, V DD = 2.5V . V DDQ = 2.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 19 of 27 Switching Characteristics Over the Operating Range [22, 23] Parameter Description –250 –200 –167 Unit Min. Max. Min. Max. Min. Max. t Power [18] V CC (typic al) to the first access read or write 1 1 1 ms Clock t CYC Clock Cycle T i me 4.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 20 of 27 Switching W aveforms Read/Write/T iming [24, 2 5, 26] Notes: 24. For this waveform ZZ is tied LOW . 25. 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.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 21 of 27 Notes: 27. The Ignore Clock Edge or S tall cycle (Clock 3) illustrated CEN being used to cr eate a pause. A write is not per formed during this cycle 28. Device must be deselected when entering ZZ mode.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 22 of 27 Ordering Information Not all of the spe ed, package and temperature ran ges are availab le. Please contact your local sa les representative or visit www .cypress .com for a ctual produc t s offered.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 23 of 27 250 CY7C1370DV25-250AXC 51-85050 100 -pin Thin Quad Flat Pack (14 x 20 x 1.4 mm) Lead-Free Co mmercial CY7C1372DV25-250AXC CY7C1370DV25-250BGC 51-851 15 1 19-ball Ball Grid Array (14 x 22 x 2.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 24 of 27 Package Diagrams 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 3.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 25 of 27 Package Diagrams (continued) 51-851 15-*B 1 19-Ball BG A (1 4 x 22 x 2. 4 mm) (51- 85 1 15) [+] Feedback.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 26 of 27 © 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.
CY7C1370DV25 CY7C1372DV25 Document #: 38-05558 Rev . *D Page 27 of 27 Document History Page Document Title: CY7C1370DV25/CY7C1372DV25 18-Mbit (512K x 36/1M x 18) Pipelined SRAM with NoBL™ Architecture Document Number: 38 -05558 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 CY7C1372DV25 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 CY7C1372DV25 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Cypress CY7C1372DV25 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Cypress CY7C1372DV25 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Cypress CY7C1372DV25, 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 CY7C1372DV25.
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 CY7C1372DV25. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Cypress CY7C1372DV25 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.
