Instruction/ maintenance manual of the product CY7C144 Cypress
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CY7C145, CY7C144 8K x 8/9 Dual-Port S t atic RAM with SEM, INT , BUSY Cypress Semiconductor Corpora tion • 198 Champion Court • San Jose , CA 95134-1709 • 408-943-2600 Document #: 38-06034 Rev .
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 2 of 21 Pin Configurations Figure 1. 68-Pin PLCC (T op View) Figure 2. 64-Pin PLCC (T op View) 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 67 60 59.
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 3 of 21 Figure 3. 80- Pin TQFP Pin Configurations (continued) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 17 16 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32.
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 4 of 21 Maximum Ratin gs Exceeding maximum ratings may impair the useful life of the device. These user guid elines are not tested. [5] S torage T emperature ........ ......... ........... ......... − 65 ° C to +150 ° C Ambient T emperature with Power Applied .
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 5 of 21 Electrical Characteristics Over the Operating Range (continued) Parameter Description T est Conditions 7C144-35 7C145-35 7C144-55 7C145-55 Unit Min Max Min Max V OH Output HIGH V oltage V CC = Min.
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 6 of 21 Figure 4. AC T est Loads and Waveforms 3.0V GND 90% 90% 10% ≤ 3n s ≤ 3 ns 10% ALL INPUT PULSES (a) Normal Load (Load 1) 5V OUTPUT C= 3 0 pF V TH = 1.
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 7 of 21 t SD Data Set-Up to Write End 10 15 15 25 ns t HD Data Hold From Write End 0 0 0 0 ns t HZWE [1 1,12] R/W LOW to High Z 10 15 2 0 25 n s t L.
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 8 of 21 Switching W aveforms Figure 5. Read Cycle No. 1 (Either Por t Address Access) [15, 16] Figure 6. Read Cycle No. 2 (Either Port CE /OE Access) [15, 17, 18] Figure 7. Re ad Ti ming with Port- to-Port Delay (M/S =L ) [19, 20] Notes 15.
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 9 of 21 Figure 8. Write Cycle No. 1: OE Three-S tate Dat a I/Os (Either Port) [21, 22, 23] Figure 9. Write Cycle No. 2: R/W Three-S t ate Data I/Os (Either Port) [21, 23, 24 ] Notes 21. The internal write time of the memory is def ined by the overlap of CE or SEM LOW and R/W LOW .
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 10 of 21 Figure 10. Semaphore Read After Write T iming, Either Side [25] Figure 1 1. Semaphore Conte ntion [26, 27, 28] Notes 25. CE = HIG H for the duration of the abov e timing (both writ e and read cycle).
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 1 1 of 21 Figure 12. Read with BUSY (M/S=HIGH) [20] Figure 13. Write Ti ming with Busy Input (M/S =LOW) Switching W aveforms (continued ) VALID t DD.
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 12 of 21 Figure 14. Busy Timing Diagram No. 1 (CE Arbitration) [29] Figure 15. Busy Timing Diagram No.
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 13 of 21 Figure 16. Interrupt Timing Diagrams Notes 30. t HA depends on which enable pin (CE L or R/W L ) is deasserted first. 31. t INS or t INR depends on which enable p in (CE L or R/W L ) is asserted last.
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 14 of 21 Architecture The CY7C1 44/5 consi sts of a an arra y of 8K words of 8/9 bi ts each of dual-port RAM cells, I/O and a ddress lines, and control signals (CE , OE , R/W ). These control pins pe rmit independent access for re ads or writes to any location in memory .
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 15 of 21 T able 3. Non-Cont ending Read /Write Input s Outputs CE R/W OE SEM I/O 0 − 7/8 Operation H X X H High Z Power-Down H H L L Data Out Read.
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 16 of 21 Figure 17. T ypical DC and AC Chara cteristics 1.4 1.0 0.4 4.0 4.5 5.0 5. 5 6.0 − 55 25 125 1.2 1.0 120 80 0 1.0 2.0 3.0 4.0 OUTPUT SOURCE CURR ENT (mA) SUPPLY VOLTAGE (V) NORMALIZED SUPPLY CURRENT vs.
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 17 of 21 Ordering Information 8K x8 Dual-Port SRAM Speed (ns) Ordering C ode Package Name Package T ype Operating Range 15 CY7C144-15 AC A65 64-Pin .
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 18 of 21 8K x9 Dual-Port SRAM Speed (ns) Ordering Code Package Name Package T ype Operating Range 15 CY7C145-15AC A80 80-Pin Thin Quad F lat Pack Co.
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 19 of 21 Package Diagrams Figure 18. 64-Pin Th in Plastic Quad Fl at Pack (14 x 14 x 1.4 mm ) A65 (5 1-85046) 51-85046-* C [+] Feedback.
CY7C145, CY7C144 Document #: 38-06034 Rev . *D Page 20 of 21 Figure 19. 80-Pin Thi n Plasti c Quad Flat Pack A80 (51-850 65) Figure 20. 68-Pin Plastic Lead ed Chip Carrier J81 (51-8 5005) 51-85065-* B.
Document #: 38-06034 Rev . *D Revised December 10, 2008 Page 21 of 21 All product s and company names ment ioned in thi s document may be the tra demarks of thei r respective h olders. CY7C145, CY7C144 © Cypress Semicondu ctor Corporati on, 2005-2008.
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