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Cypress CY62157EV18 manual

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Table of contents for the manual

  • Page 1

    Cypress Semic onductor Corpora tion • 198 Champion Court • San Jose , CA 95134-17 09 • 408-94 3-2600 Document #: 38-0549 0 Rev . *D Revised March 30, 2007 CY62157EV18 MoBL ® 8-Mbit (512K x 16) S t atic RAM Features • V ery hi gh speed: 55 ns • Wide voltage range: 1.65V–2.25V • Pin Compatible with CY62157DV18 and CY62157DV20 • Ultra[...]

  • Page 2

    CY62157EV18 MoBL ® Document #: 38-05490 Rev . *D Page 2 of 12 Logic Block Diagram Pin Configuration [3] 512K x 16 RAM Arra y IO 0 –IO 7 ROW DECODER A 8 A 7 A 6 A 5 A 2 COLUMN DECO DER A 11 A 12 A 13 A 14 A 15 SENSE AMPS DATA IN DRIVERS OE A 4 A 3 IO 8 –IO 15 WE BLE BHE A 16 A 0 A 1 A 17 A 9 BHE BLE A 10 A 18 POWER DOWN CIRCUIT CE 2 CE 1 CE 2 C[...]

  • Page 3

    CY62157EV18 MoBL ® Document #: 38-05490 Rev . *D Page 3 of 12 Maximum Ratings Exceeding maximum ratings may im p air the useful life of the device. These user guidelines are not teste d. S torage T emperature .............. ................. . –65°C to + 150°C Ambient T emperatur e with Power Applied ....................... ........ ..........[...]

  • Page 4

    CY62157EV18 MoBL ® Document #: 38-05490 Rev . *D Page 4 of 12 Thermal Resist ance [8] Parameter Description T est Conditions BGA Unit Θ JA Thermal Resistance (Junction to Ambient) S til l air , soldered on a 3 × 4.5 inch, two-layer printed circu it board 72 ° C/W Θ JC Thermal Resistance (Junction to Case) 8.86 ° C/W AC T est Loads and W avefo[...]

  • Page 5

    CY62157EV18 MoBL ® Document #: 38-05490 Rev . *D Page 5 of 12 Switching Characteristics (Over th e Operat ing Range ) [1 1, 12 ] Parameter Descriptio n 55 ns Unit Min Max Read Cycle t RC Read Cycle T ime 55 ns t AA Address to Data V alid 55 ns t OHA Data Hold from Address Change 10 ns t ACE CE 1 LOW and CE 2 HIGH to Data V alid 55 ns t DOE OE LOW [...]

  • Page 6

    CY62157EV18 MoBL ® Document #: 38-05490 Rev . *D Page 6 of 12 Switching W aveforms Read Cycle 1 (Address T ransition Controlled) [17, 18] Read Cycle 2 (OE Controlled) [18, 19] PREVIOUS DATA VALID DATA VALID RC t AA t OHA t RC ADDRESS DATA OUT 50% 50% DA T A V AL ID t RC t ACE t DOE t LZOE t LZCE t PU HIGH IMPEDANCE t HZOE t PD t HZBE t LZBE t HZCE[...]

  • Page 7

    CY62157EV18 MoBL ® Document #: 38-05490 Rev . *D Page 7 of 12 Write Cycle 1 (WE Controlled) [16, 20, 21] Write Cycle 2 (CE 1 or CE 2 Controlled) [16, 20, 21] Switching W aveforms (conti nued) t HD t SD t PWE t SA t HA t AW t SCE t WC t HZOE VA L I D D ATA t BW NOTE 22 CE 1 ADDRESS CE 2 WE DA T A IO OE BHE /BLE t HD t SD t PWE t HA t AW t SCE t WC [...]

  • Page 8

    CY62157EV18 MoBL ® Document #: 38-05490 Rev . *D Page 8 of 12 Write Cycle 3 (WE Controlled, OE LOW) [21] Write Cycle 4 (BHE /BLE Controlled, OE LOW) [21] Switching W aveforms (conti nued) VA L I D D ATA t HD t SD t LZWE t PWE t SA t HA t AW t SCE t WC t HZWE t BW NOTE 22 CE 1 ADDRESS CE 2 WE DA T A IO BHE /BLE t HD t SD t SA t HA t AW t WC VA L I [...]

  • Page 9

    CY62157EV18 MoBL ® Document #: 38-05490 Rev . *D Page 9 of 12 T rut h T a ble CE 1 CE 2 WE OE BHE BLE Input s/Output s Mode Power H X X X X X High-Z Deselect/Power Down S tandby (I SB ) X L X X X X High-Z Des elect/Power Down S tandby (I SB ) X X X X H H High-Z Deselect/Power Down S tandby (I SB ) L H H L L L Data Out (IO 0 –IO 15 ) Read Active [...]

  • Page 10

    Document #: 38-05490 Rev . *D Page 10 of 12 © Cypress Semi conductor Cor poration, 200 6-2007. The info rmation co ntained h erein is subject to change witho ut notice. Cypress S emiconductor Corporatio n assumes no responsibility for the use of any circuitr y other than circuitr y embodied in a C ypress product. Nor doe s it convey or imply a ny [...]

  • Page 11

    CY62157EV18 MoBL ® Document #: 38-05490 Rev . *D Page 1 1 of 12 Document History Document Title: CY62157EV18 MoBL ® 8-Mbit (512K x 16) St atic RAM Document Number:38-0549 0 REV . ECN NO. Issue Date Orig. o f Change Description of Cha nge ** 202862 See ECN AJU New Data Sheet *A 291272 See ECN SYT Converted from Ad vance Info rmation to Preliminary[...]

  • Page 12

    CY62157EV18 MoBL ® Document #: 38-05490 Rev . *D Page 12 of 12 *D 908120 See ECN VKN Add ed footnote #7 related to I SB2 Added footnote #12 related AC timing paramete rs Document Title: CY62157EV18 MoBL ® 8-Mbit (512K x 16) St atic RAM Document Number:38-0549 0 REV . ECN NO. Issue Date Orig. o f Change Description of Cha nge [+] Feedback[...]