CY62157ESL MoBL® 8-Mbit (512 K × 16) Static RAM 8-Mbit (512 K × 16) Static RAM Features ■ Very high speed: 45 ns ■ Wide voltage range: 2.2 V to 3.6 V and 4.5 V to 5.5 V ■ Ultra low standby power ❐ Typical Standby current: 2 A ❐ Maximum Standby current: 8 A addresses are not toggling. Place the device into standby mode when deselected (CE HIGH or both BHE and BLE are HIGH). The input or output pins (I/O0 through I/O15) are placed in a high impedance state when the device is deselected (CE HIGH), the outputs are disabled (OE HIGH), both the Byte High Enable and the Byte Low Enable are disabled (BHE, BLE HIGH), or during an active write operation (CE LOW and WE LOW). To write to the device, take Chip Enable (CE) and Write Enable (WE) inputs LOW. If Byte Low Enable (BLE) is LOW, then data from I/O pins (I/O0 through I/O7) is written into the location specified on the address pins (A0 through A18). If Byte High Enable (BHE) is LOW, then data from I/O pins (I/O8 through I/O15) is written into the location specified on the address pins (A0 through A18). ■ Ultra low active power ❐ Typical active current: 1.8 mA at f = 1 MHz ■ Easy memory expansion with CE and OE features ■ Automatic power down when deselected ■ Complementary metal oxide semiconductor (CMOS) for optimum speed and power ■ Available in Pb-free 44-pin thin small outline package (TSOP) II package Functional Description The CY62157ESL is a high performance CMOS static RAM organized as 512K words by 16 bits. This device features advanced circuit design to provide ultra low active current. This is ideal for providing More Battery Life (MoBL®) in portable applications. The device also has an automatic power down feature that significantly reduces power consumption when To read from the device, take Chip Enable (CE) and Output Enable (OE) LOW while forcing the Write Enable (WE) HIGH. If Byte Low Enable (BLE) is LOW, then data from the memory location specified by the address pins appear on I/O0 to I/O7. If Byte High Enable (BHE) is LOW, then data from memory appears on I/O8 to I/O15. See the Truth Table on page 11 for a complete description of read and write modes. The CY62157ESL device is suitable for interfacing with processors that have TTL I/P levels. It is not suitable for processors that require CMOS I/P levels. Please see Electrical Characteristics on page 4 for more details and suggested alternatives. Logic Block Diagram ROW DECODER A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 SENSE AMPS DATA IN DRIVERS 512 K × 16 RAM Array I/O0–I/O7 I/O8–I/O15 COLUMN DECODER Cypress Semiconductor Corporation Document Number: 001-43141 Rev. *E • 198 Champion Court A17 A18 A16 A15 BLE A14 BHE A11 A12 A13 CE Power Down Circuit • BHE WE CE OE BLE San Jose, CA 95134-1709 • 408-943-2600 Revised June 4, 2013 CY62157ESL MoBL® Contents Pin Configurations ........................................................... 3 Product Portfolio .............................................................. 3 Maximum Ratings ............................................................. 4 Operating Range ............................................................... 4 Electrical Characteristics ................................................. 4 Capacitance ...................................................................... 5 Thermal Resistance .......................................................... 5 AC Test Loads and Waveforms ....................................... 5 Data Retention Characteristics ....................................... 6 Data Retention Waveform ................................................ 6 Switching Characteristics ................................................ 7 Switching Waveforms ...................................................... 8 Document Number: 001-43141 Rev. *E Truth Table ...................................................................... 11 Ordering Information ...................................................... 12 Ordering Code Definitions ......................................... 12 Package Diagram ............................................................ 13 Acronyms ........................................................................ 14 Document Conventions ................................................. 14 Units of Measure ....................................................... 14 Document History Page ................................................. 15 Sales, Solutions, and Legal Information ...................... 17 Worldwide Sales and Design Support ....................... 17 Products .................................................................... 17 PSoC Solutions ......................................................... 17 Page 2 of 17 CY62157ESL MoBL® Pin Configurations Figure 1. 44-pin TSOP II pinout (Top View) A4 A3 A2 A1 A0 CE I/O0 I/O1 I/O2 I/O3 VCC VSS I/O4 I/O5 I/O6 I/O7 WE A18 A17 A16 A15 A14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 A5 A6 A7 OE BHE BLE I/O15 I/O14 I/O13 I/O12 VSS VCC I/O11 I/O10 I/O9 I/O8 A8 A9 A10 A11 A12 A13 Product Portfolio Power Dissipation Product CY62157ESL Range VCC Range (V) [1] Industrial 2.2 V–3.6 V and 4.5 V–5.5 V Speed (ns) 45 Operating ICC, (mA) f = 1MHz f = fmax Standby, ISB2 (A) Typ[2] Max Typ [2] Max Typ [2] Max 1.8 3 18 25 2 8 Notes 1. Datasheet specifications are not guaranteed for VCC in the range of 3.6 V to 4.5 V. 2. Typical values are included for reference only and are not guaranteed or tested. Typical values are measured at VCC = 3 V, and VCC = 5 V, TA = 25 °C. Document Number: 001-43141 Rev. *E Page 3 of 17 CY62157ESL MoBL® Maximum Ratings Output Current into Outputs (LOW) ............................ 20 mA Exceeding the maximum ratings may impair the useful life of the device. These user guidelines are not tested. Storage Temperature ............................... –65 °C to +150 °C Ambient Temperature with Power Applied ......................................... –55 °C to +125 °C Static Discharge Voltage (MIL-STD-883, Method 3015) .................................. >2001 V Latch up Current ..................................................... >200 mA Operating Range Supply Voltage to Ground Potential ...............–0.5 V to 6.0 V Device Range Ambient Temperature VCC[5] DC Voltage Applied to Outputs in High Z State [3, 4] ........................................–0.5 V to 6.0 V CY62157ESL Industrial –40 °C to +85 °C 2.2 V–3.6 V, and 4.5 V–5.5 V DC Input Voltage [3, 4] ....................................–0.5 V to 6.0 V Electrical Characteristics Over the Operating Range Parameter VOH VOL VIH VIL Description Output high voltage Output low voltage Input high voltage Input low voltage Test Conditions 45 ns Min Typ [6] Max 2.2 < VCC < 2.7 IOH = –0.1 mA 2.0 – – 2.7 < VCC < 3.6 IOH = –1.0 mA 2.4 – – 4.5 < VCC < 5.5 IOH = –1.0 mA 2.4 – – 4.5 < VCC < 5.5 IOH = –0.1 mA – – 3.4 [7] 2.2 < VCC < 2.7 IOL = 0.1 mA – – 0.4 2.7 < VCC < 3.6 IOL = 2.1 mA – – 0.4 4.5 < VCC < 5.5 IOL = 2.1 mA – – 0.4 2.2 < VCC < 2.7 1.8 – VCC + 0.3 2.7 < VCC < 3.6 2.2 – VCC + 0.3 4.5 < VCC < 5.5 2.2 – VCC + 0.5 2.2 < VCC < 2.7 –0.3 – 0.6 2.7 < VCC < 3.6 –0.3 – 0.8 4.5 < VCC < 5.5 –0.5 – 0.8 Unit V V V V IIX Input leakage current GND < VI < VCC –1 – +1 A IOZ Output leakage current GND < VO < VCC, Output Disabled –1 – +1 A ICC VCC operating supply current f = fmax = 1/tRC – 18 25 mA – 1.8 3 f = 1 MHz VCC = VCCmax IOUT = 0 mA, CMOS levels ISB1[8] Automatic CE power down current – CMOS inputs CE > VCC 0.2 V, VIN > VCC – 0.2 V or VIN < 0.2 V, f = fmax (address and data only), f = 0 (OE, BHE, BLE and WE), VCC = VCC(max) – 2 8 A ISB2[8] Automatic CE power down current – CMOS inputs CE > VCC – 0.2 V, VIN > VCC – 0.2 V or VIN < 0.2 V, f = 0, VCC = VCC(max) – 2 8 A Notes 3. VIL (min) = –2.0 V for pulse durations less than 20 ns. 4. VIH (max) = VCC + 0.75 V for pulse durations less than 20 ns. 5. Full device AC operation assumes a 100 s ramp time from 0 to VCC (min) and 200 s wait time after VCC stabilization. 6. Typical values are included for reference only and are not guaranteed or tested. Typical values are measured at VCC = 3 V, and VCC = 5 V, TA = 25 °C. 7. Please note that the maximum VOH limit does not exceed minimum CMOS VIH of 3.5 V. If you are interfacing this SRAM with 5 V legacy processors that require a minimum VIH of 3.5 V, please refer to Application Note AN6081 for technical details and options you may consider. 8. Chip enable (CE) needs to be tied to CMOS levels to meet the ISB1/ISB2 / ICCDR spec. Other inputs can be left floating. Document Number: 001-43141 Rev. *E Page 4 of 17 CY62157ESL MoBL® Capacitance Parameter [9] Description CIN Input capacitance COUT Output capacitance Test Conditions Max Unit 10 pF 10 pF Test Conditions TSOP II Unit Still Air, soldered on a 3 × 4.5 inch, two-layer printed circuit board 77 C/W 13 C/W TA = 25 °C, f = 1 MHz, VCC = VCC(typ) Thermal Resistance Parameter [9] Description JA Thermal resistance (junction to ambient) JC Thermal resistance (junction to case) AC Test Loads and Waveforms Figure 2. AC Test Loads and Waveforms R1 VCC OUTPUT VCC 30 pF 10% GND R2 Rise Time = 1 V/ns INCLUDING JIG AND SCOPE ALL INPUT PULSES 90% 90% 10% Fall Time = 1 V/ns Equivalent to: THÉVENIN EQUIVALENT RTH OUTPUT V TH Parameters 2.5 V 3.0 V 5.0 V Unit R1 16667 1103 1800 R2 15385 1554 990 RTH 8000 645 639 VTH 1.20 1.75 1.77 V Note 9. Tested initially and after any design or process changes that may affect these parameters. Document Number: 001-43141 Rev. *E Page 5 of 17 CY62157ESL MoBL® Data Retention Characteristics Over the Operating Range Parameter Description VDR VCC for data retention ICCDR[10] Data retention current Conditions CE > VCC – 0.2 V, VCC = 1.5 V VIN > VCC – 0.2 V or VCC = 2.0 V VIN < 0.2 V Min Typ [10] Max Unit 1.5 – – V – 2 5 A – 2 8 tCDR [12] Chip deselect to data retention time 0 – – ns tR [13] Operation recovery time 45 – – ns Data Retention Waveform Figure 3. Data Retention Waveform DATA RETENTION MODE VCC CE or BHE.BLE VCC(min) tCDR VDR > 1.5 V VCC(min) tR [14] Notes 10. Typical values are included for reference only and are not guaranteed or tested. Typical values are measured at VCC = 3 V, and VCC = 5 V, TA = 25 °C. 11. Chip enable (CE) needs to be tied to CMOS levels to meet the ISB1/ISB2 / ICCDR spec. Other inputs can be left floating. 12. Tested initially and after any design or process changes that may affect these parameters. 13. Full device operation requires linear VCC ramp from VDR to VCC(min) > 100 s or stable at VCC(min) > 100 s. 14. BHE.BLE is the AND of both BHE and BLE. Deselect the chip by either disabling chip enable signals or by disabling both BHE and BLE. Document Number: 001-43141 Rev. *E Page 6 of 17 CY62157ESL MoBL® Switching Characteristics Over the Operating Range Parameter [15] Description 45 ns Unit Min Max 45 – ns Read Cycle tRC Read cycle time tAA Address to data valid – 45 ns tOHA Data hold from address change 10 – ns tACE CE LOW to data valid – 45 ns tDOE OE LOW to data valid – OE LOW to Low Z [16] 5 – 22 – ns tLZOE 18 – ns 18 – ns 45 ns 45 – ns 18 ns 45 – ns ns ns [16, 17] tHZOE OE HIGH to High Z tLZCE CE LOW to Low Z [16] [16, 17] 10 – tHZCE CE HIGH to High Z tPU CE LOW to power up tPD CE HIGH to power down 0 – tDBE BLE/BHE LOW to data valid – tLZBE BLE/BHE LOW to Low Z [16, 18] tHZBE BLE/BHE HIGH to High Z [16, 17] [19] Write Cycle tWC Write cycle time 5 – ns ns ns ns tSCE tAW CE LOW to write end Address setup to write end 35 35 – tHA tSA Address hold from write end Address setup to write start 0 0 – – ns ns tPWE WE pulse width 35 – ns tBW tSD BLE/BHE LOW to write end Data setup to write end 35 25 – – ns ns tHD Data hold from write end 0 – ns – 18 – ns [16, 17] tHZWE WE LOW to High Z tLZWE WE HIGH to Low Z [16] 10 – ns Notes 15. Test conditions for all parameters other than tri-state parameters assume signal transition time of 3 ns or less, timing reference levels of 1.5 V, input pulse levels of 0 to 3 V, and output loading of the specified IOL/IOH as shown in the Figure 2 on page 5. 16. At any temperature and voltage condition, tHZCE is less than tLZCE, tHZBE is less than tLZBE, tHZOE is less than tLZOE, and tHZWE is less than tLZWE for any device. 17. tHZOE, tHZCE, tHZBE, and tHZWE transitions are measured when the outputs enter a high-impedance state. 18. If both byte enables are toggled together, this value is 10 ns. 19. The internal write time of the memory is defined by the overlap of WE, CE = VIL, BHE, BLE or both = VIL. All signals must be active to initiate a write and any of these signals can terminate a write by going inactive. The data input setup and hold timing must be referenced to the edge of the signal that terminates the write. Document Number: 001-43141 Rev. *E Page 7 of 17 CY62157ESL MoBL® Switching Waveforms Figure 4. Read Cycle No.1: Address Transition Controlled. [20, 21] tRC RC ADDRESS tAA tOHA DATA OUT PREVIOUS DATA VALID DATA VALID Figure 5. Read Cycle No. 2: OE Controlled [21, 22] ADDRESS tRC CE tPD tHZCE tACE OE tHZOE tDOE tLZOE BHE/BLE tHZBE tDBE tLZBE HIGH IMPEDANCE HIGHIMPEDANCE DATA VALID DATA OUT tLZCE tPU VCC SUPPLY CURRENT ICC 50% 50% ISB Notes 20. The device is continuously selected. OE, CE = VIL, BHE, BLE, or both = VIL. 21. WE is HIGH for read cycle. 22. Address valid before or similar to CE, BHE, BLE transition LOW. Document Number: 001-43141 Rev. *E Page 8 of 17 CY62157ESL MoBL® Switching Waveforms (continued) Figure 6. Write Cycle No 1: WE Controlled [23, 24] tWC ADDRESS tSCE CE tAW tHA tSA tPWE WE tBW BHE/BLE tSD DATA I/O NOTE 25 tHD DATAIN Figure 7. Write Cycle 2: CE Controlled [23, 24] tWC ADDRESS tSCE CE tSA tAW tHA tPWE WE tBW BHE/BLE tSD DATA I/O NOTE 25 tHD DATAIN Notes 23. The internal write time of the memory is defined by the overlap of WE, CE = VIL, BHE, BLE or both = VIL. All signals must be active to initiate a write and any of these signals can terminate a write by going inactive. The data input setup and hold timing must be referenced to the edge of the signal that terminates the write. 24. If CE goes HIGH simultaneously with WE = VIH, the output remains in a high impedance state. 25. During this period, the I/Os are in output state. Do not apply input signals. Document Number: 001-43141 Rev. *E Page 9 of 17 CY62157ESL MoBL® Switching Waveforms (continued) Figure 8. Write Cycle 3: BHE/BLE Controlled [26, 27] tWC ADDRESS CE tSCE tAW tHA tBW BHE/BLE tSA tPWE WE tHZWE DATA I/O NOTE 28 tSD tHD DATAIN tLZWE Notes 26. The internal write time of the memory is defined by the overlap of WE, CE = VIL, BHE, BLE or both = VIL. All signals must be active to initiate a write and any of these signals can terminate a write by going inactive. The data input setup and hold timing must be referenced to the edge of the signal that terminates the write. 27. If CE goes HIGH simultaneously with WE = VIH, the output remains in a high impedance state. 28. During this period, the I/Os are in output state. Do not apply input signals. Document Number: 001-43141 Rev. *E Page 10 of 17 CY62157ESL MoBL® Truth Table CE WE OE BHE BLE H Inputs/Outputs Deselect/power down Power Standby (ISB) X X X X [29] X X H H High Z Deselect/power down Standby (ISB) L H L L L Data Out (I/O0–I/O15) Read Active (ICC) L H L H L Data Out (I/O0–I/O7); I/O8–I/O15 in High Z Read Active (ICC) L H L L H Data Out (I/O8–I/O15); I/O0–I/O7 in High Z Read Active (ICC) L H H L L High-Z Output disabled Active (ICC) L H H H L High-Z Output disabled Active (ICC) L H H L H High-Z Output disabled Active (ICC) L L X L L Data In (I/O0–I/O15) Write Active (ICC) L L X H L Data In (I/O0–I/O7); I/O8–I/O15 in High Z Write Active (ICC) L L X L H Data In (I/O8–I/O15); I/O0–I/O7 in High Z Write Active (ICC) X High Z Mode Note 29. The ‘X’ (Don’t care) state for the Chip enable in the truth table refers to the logic state (either HIGH or LOW). Intermediate voltage levels on this pin is not permitted. Document Number: 001-43141 Rev. *E Page 11 of 17 CY62157ESL MoBL® Ordering Information Speed (ns) 45 Ordering Code CY62157ESL-45ZSXI Package Diagram Package Type 51-85087 44-pin TSOP Type II (Pb-free) Operating Range Industrial Ordering Code Definitions CY 621 5 7 E SL - 45 ZS X I Temperature Range: I = Industrial Pb-free Package Type: ZS = 44-pin TSOP II Speed Grade: 45 ns Voltage Range: SL = 3 V typical; 5 V typical Process Technology: E = 90 nm Buswidth: 7 = × 16 Density: 5 = 8-Mbit Family Code: MoBL SRAM family Company ID: CY = Cypress Document Number: 001-43141 Rev. *E Page 12 of 17 CY62157ESL MoBL® Package Diagram Figure 9. 44-pin TSOP Z44-II Package Outline, 51-85087 51-85087 *E Document Number: 001-43141 Rev. *E Page 13 of 17 CY62157ESL MoBL® Acronyms Acronym Document Conventions Description Units of Measure BHE Byte High Enable BLE Byte Low Enable °C degrees Celsius CE Chip Enable MHz megahertz CMOS Complementary Metal Oxide Semiconductor A microampere I/O Input/Output mA milliampere OE Output Enable ns nanosecond SRAM Static Random Access Memory ohm TSOP Thin Small Outline Package pF picofarad WE Write Enable V volt W watt Document Number: 001-43141 Rev. *E Symbol Unit of Measure Page 14 of 17 CY62157ESL MoBL® Document History Page Document Title: CY62157ESL MoBL®, 8-Mbit (512 K × 16) Static RAM Document Number: 001-43141 Rev. ECN No. Issue Date Orig. of Change ** 1875228 See ECN VKN / AESA New data sheet. *A 2943752 06/03/2010 VKN Added Contents. Description of Change Updated Electrical Characteristics: Added Note 8 and referred the same note in ISB2 parameter. Updated Truth Table: Added Note 29 and referred the same note in CE column. Updated Package Diagram. Added Sales, Solutions, and Legal Information. *B 3109266 12/13/2010 PRAS Changed Table Footnotes to Footnotes. *C 3295175 06/29/2011 RAME Updated Functional Description: Remove reference to AN1064 SRAM system guidelines. Added Ordering Code Definitions. Updated Electrical Characteristics: Updated Note 8 (Added ISB1) and referred the same note in ISB1 parameter. Updated Capacitance: Added Note 9 and referred the same note in parameter column. Updated Thermal Resistance: Added Note 9 and referred the same note in parameter column. Updated Data Retention Characteristics: Added Note 11 and referred the same note in ICCDR parameter. Updated Ordering Code Definitions. Added Units of Measure. *D 3904207 02/14/2013 MEMJ Updated Switching Waveforms: Updated Figure 6 (Removed OE signal). Updated Figure 7 (Removed OE signal). Removed the Note “Data I/O is high impedance if OE = VIH.” and its reference in Figure 6, Figure 7. Removed the figure “Write Cycle 3: WE controlled, OE LOW”. Updated Figure 8 (Removed “OE LOW” in caption only). Removed the Note “Data I/O is high impedance if OE = VIH.” and its reference in Figure 8. Updated Package Diagram: spec 51-85087 – Changed revision from *C to *E. Document Number: 001-43141 Rev. *E Page 15 of 17 CY62157ESL MoBL® Document History Page (continued) Document Title: CY62157ESL MoBL®, 8-Mbit (512 K × 16) Static RAM Document Number: 001-43141 Rev. ECN No. Issue Date Orig. of Change *E 4019657 06/04/2013 MEMJ Description of Change Updated Functional Description. Updated Electrical Characteristics: Added one more Test Condition “4.5 < VCC < 5.5, IOH = –0.1 mA” for VOH parameter and added maximum value corresponding to that Test Condition. Added Note 7 and referred the same note in maximum value for VOH parameter corresponding to Test Condition “4.5 < VCC < 5.5, IOH = –0.1 mA”. Document Number: 001-43141 Rev. *E Page 16 of 17 CY62157ESL MoBL® Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office closest to you, visit us at Cypress Locations. Products Automotive Clocks & Buffers Interface Lighting & Power Control PSoC Solutions cypress.com/go/automotive cypress.com/go/clocks psoc.cypress.com/solutions cypress.com/go/interface PSoC 1 | PSoC 3 | PSoC 5 cypress.com/go/powerpsoc cypress.com/go/plc Memory PSoC Touch Sensing cypress.com/go/memory cypress.com/go/psoc cypress.com/go/touch USB Controllers Wireless/RF cypress.com/go/USB cypress.com/go/wireless © Cypress Semiconductor Corporation, 2008–2013. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign), United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without the express written permission of Cypress. Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Use may be limited by and subject to the applicable Cypress software license agreement. Document Number: 001-43141 Rev. *E Revised June 4, 2013 Page 17 of 17 MoBL is a registered trademark and More Battery Life is a trademark of Cypress Semiconductor. All product and company names mentioned in this document are the trademarks of their respective holders.