CY7C1046D 4-Mbit (1 M × 4) Static RAM 4-Mbit (1 M × 4) Static RAM Features Functional Description The CY7C1046D[1] is a high-performance CMOS static RAM organized as 1M words by 4 bits. Easy memory expansion is provided by an active LOW Chip Enable (CE), an active LOW Output Enable (OE), and tri-state drivers. Writing to the device is accomplished by taking Chip Enable (CE) and Write Enable (WE) inputs LOW. Data on the four I/O pins (I/O0 through I/O3) is then written into the location specified on the address pins (A0 through A19). ■ Pin- and function-compatible with CY7C1046B ■ High speed ❐ tAA = 10 ns ■ CMOS for optimum speed/power ■ Low active power ❐ ICC = 90 mA @ 10 ns ■ Low CMOS Standby Power ❐ ISB2 = 10 mA ■ Data Retention at 2.0 V ■ Automatic power-down when deselected ■ TTL-compatible inputs and outputs ■ Easy memory expansion with CE and OE features ■ Available in lead-free 400-mil-wide 32-pin SOJ package Reading from the device is accomplished by taking Chip Enable (CE) and Output Enable (OE) LOW while forcing Write Enable (WE) HIGH. Under these conditions, the contents of the memory location specified by the address pins will appear on the I/O pins. The four input/output pins (I/O0 through I/O3) are placed in a high-impedance state when the device is deselected (CE HIGH), the outputs are disabled (OE HIGH), or during a write operation (CE LOW, and WE LOW). The CY7C1046D is available in a standard 400-mil-wide 32-pin SOJ package with center power and ground (revolutionary) pinout. Logic Block Diagram INPUT BUFFER I/O0 1M x 4 SENSE AMPS ROW DECODER A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 I/O1 I/O2 I/O3 COLUMN DECODER CE POWER DOWN A 11 A 12 A 13 A14 A15 A16 A17 A18 A19 WE OE Note 1. For guidelines on SRAM system design, please refer to the ‘System Design Guidelines’ Cypress application note, available on the internet at www.cypress.com. Cypress Semiconductor Corporation Document Number: 38-05705 Rev. *D • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600 Revised December 1, 2010 [+] Feedback CY7C1046D Contents Selection Guide ................................................................ 3 Pin Configuration ............................................................. 3 Maximum Ratings ............................................................. 4 Operating Range ............................................................... 4 Electrical Characteristics ................................................. 4 Capacitance ...................................................................... 4 Thermal Resistance .......................................................... 4 AC Test Loads and Waveforms ....................................... 5 Switching Characteristics ................................................ 6 Data Retention Characteristics ....................................... 7 Data Retention Waveform ................................................ 7 Switching Waveforms ...................................................... 8 Read Cycle No. 1 ........................................................ 8 Read Cycle No. 2 (OE Controlled) .............................. 8 Write Cycle No. 1 (CE Controlled) ............................... 9 Document Number: 38-05705 Rev. *D Write Cycle No. 2 (WE Controlled, OE HIGH During Write) ...................................................... 9 Write Cycle No. 3 (WE Controlled, OE LOW) ........... 10 Truth Table ...................................................................... 10 Ordering Information ...................................................... 11 Ordering Code Definitions ......................................... 11 Package Diagram ............................................................ 12 Acronyms ........................................................................ 13 Document Conventions ................................................. 13 Units of Measure ....................................................... 13 Document History Page ................................................. 14 Sales, Solutions, and Legal Information ...................... 15 Worldwide Sales and Design Support ....................... 15 Products .................................................................... 15 PSoC Solutions ......................................................... 15 Page 2 of 15 [+] Feedback CY7C1046D Selection Guide –10 Unit Maximum Access Time 10 ns Maximum Operating Current 90 mA Maximum CMOS Standby Current (mA) 10 mA Pin Configuration SOJ Top View A0 A1 A2 A3 A4 CE I/O0 VCC GND I/O1 WE A5 A6 A7 A8 A9 Document Number: 38-05705 Rev. *D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 A19 A18 A17 A16 A15 OE I/O3 GND VCC I/O2 A14 A13 A12 A11 A10 NC Page 3 of 15 [+] Feedback CY7C1046D Maximum Ratings Current into outputs (LOW) ......................................... 20 mA Exceeding maximum ratings may shorten the useful life of the device. User guidelines are not tested. Storage temperature ................................ –65 C to +150 C Static discharge voltage........................................... > 2001 V (per MIL-STD-883, method 3015) Latch-up current ..................................................... > 200 mA Operating Range Ambient temperature with power applied ........................................... –55 C to +125 C Supply voltage on VCC to relative GND[2] .....–0.5 V to +6.0 V Range DC voltage applied to outputs in high Z state[2] ................................... –0.5 V to VCC + 0.5 V Industrial Ambient Temperature VCC –40 C to +85 C 4.5 V–5.5 V DC input voltage[2] ............................... –0.5 V to VCC + 0.5 V Electrical Characteristics Over the Operating Range Parameter Description –10 Test Conditions VOH Output HIGH voltage VCC = Min, IOH = –4.0 mA VOL Output LOW voltage VCC = Min, IOL = 8.0 mA VIH Input HIGH voltage voltage[2] Min Max Unit 2.4 – V – 0.4 V 2.0 VCC + 0.5 V VIL Input LOW –0.5 0.8 V IIX Input leakage current GND < VI < VCC –1 +1 A IOZ Output leakage current GND < VOUT < VCC, output disabled –1 +1 A ICC VCC operating supply current VCC = Max, f = fMAX = 1/tRC 100 MHz – 90 mA 83 MHz – 80 66 MHz – 70 40 MHz – 60 ISB1 Automatic CE Power-Down Current —TTL inputs Max VCC, CE > VIH, VIN > VIH or VIN < VIL, f = fMAX – 20 mA ISB2 Automatic CE Power-Down Current —CMOS inputs Max VCC, CE > VCC – 0.3 V, VIN > VCC – 0.3 V, or VIN < 0.3 V, f = 0 – 10 mA Capacitance[3] Parameter Description CIN Input capacitance COUT I/O capacitance Test Conditions TA = 25 C, f = 1 MHz, VCC = 5.0 V Max Unit 8 pF 8 pF Thermal Resistance Parameter Description JA Thermal Resistance (Junction to Ambient)[3] JC Thermal Resistance (Junction to Case)[3] Test Conditions Still Air, soldered on a 3 × 4.5 inch, four-layer printed circuit board SOJ Package Unit 53.44 C/W 38.25 C/W Notes 2. VIL (min) = –2.0 V and VIH(max) = VCC + 2 V for pulse durations of less than 20 ns. 3. Tested initially and after any design or process changes that may affect these parameters. Document Number: 38-05705 Rev. *D Page 4 of 15 [+] Feedback CY7C1046D AC Test Loads and Waveforms [4] Z = 50 3V OUTPUT 50 30 pF* 1.5 V * CAPACITIVE LOAD CONSISTS OF ALL COMPONENTS OF THE TEST ENVIRONMENT GND Rise Time:1 V/ns R1 481 (a) 90% 90%VCC 10% 10%VCC (b) Fall Time: 1 V/ns 5V OUTPUT 5 pF High Z Characteristics: ALL INPUT PULSES INCLUDING JIG AND SCOPE (c) R2 255 Equivalent to: THÉVENIN EQUIVALENT 167 1.73 V OUTPUT Note 4. AC characteristics (except high Z) are tested using the load conditions shown in (a). High Z characteristics are tested for all speeds using the test load shown in (c). Document Number: 38-05705 Rev. *D Page 5 of 15 [+] Feedback CY7C1046D Switching Characteristics[5] Over the Operating Range Parameter Description 7C1046D-10 Min Max Unit Read Cycle tpower VCC(typical) to the first access[6] 100 – s tRC Read cycle time 10 – ns tAA Address to data valid – 10 ns tOHA Data hold from address change 3 – ns tACE CE LOW to data valid – 10 ns tDOE OE LOW to data valid – 5 ns 0 – ns – 5 ns Z[8] tLZOE OE LOW to low tHZOE OE HIGH to high Z[7, 8] Z[8] tLZCE CE LOW to low 3 – ns tHZCE CE HIGH to high Z[7, 8] – 5 ns tPU CE LOW to power-up 0 – ns tPD CE HIGH to power-down – 10 ns tWC Write cycle time 10 – ns tSCE CE LOW to write end 7 – ns tAW Address set-up to write end 7 – ns tHA Address hold from write end 0 – ns tSA Address set-up to write start 0 – ns tPWE WE pulse width 7 – ns tSD Data set-up to write end 6 – ns tHD Data hold from write end 0 – ns WE HIGH to low Z[8] 3 – ns WE LOW to high Z[7, 8] – 5 ns Write Cycle[9, 10] tLZWE tHZWE Notes 5. Test conditions assume signal transition time of 3 ns or less, timing reference levels of 1.5 V, input pulse levels of 0 to 3.0 V. 6. tPOWER gives the minimum amount of time that the power supply should be at stable, typical VCC values until the first memory access can be performed. 7. tHZOE, tHZCE, and tHZWE are specified with a load capacitance of 5 pF as in part (b) of AC Test Loads.Transition is measured when the outputs enter a high impedance state. 8. At any given temperature and voltage condition, tHZCE is less than tLZCE, tHZOE is less than tLZOE, and tHZWE is less than tLZWE for any given device. 9. The internal write time of the memory is defined by the overlap of CE LOW, and WE LOW. CE and WE must be LOW to initiate a write, and the transition of either of these signals can terminate the write. The input data set-up and hold timing should be referenced to the leading edge of the signal that terminates the write. 10. The minimum write cycle time for Write Cycle no. 3 (WE controlled, OE LOW) is the sum of tHZWE and tSD. Document Number: 38-05705 Rev. *D Page 6 of 15 [+] Feedback CY7C1046D Data Retention Characteristics Over the Operating Range Parameter Description VDR VCC for data retention ICCDR Data retention current tCDR[12] Chip deselect to data retention time tR [13] Conditions[11] VCC = VDR = 2.0 V, CE > VCC – 0.3 V, VIN > VCC – 0.3 V or VIN < 0.3 V Operation recovery time Min Max Unit 2.0 – V – 10 mA 0 – ns tRC – ns Data Retention Waveform DATA RETENTION MODE VCC 4.5 V VDR > 2 V tCDR 4.5 V tR CE Notes 11. No inputs may exceed VCC + 0.3 V. 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) > 50 s or stable at VCC(min) > 50 s. Document Number: 38-05705 Rev. *D Page 7 of 15 [+] Feedback CY7C1046D Switching Waveforms Read Cycle No. 1[14, 15] tRC ADDRESS tOHA DATA OUT tAA PREVIOUS DATA VALID DATA VALID Read Cycle No. 2 (OE Controlled)[15, 16] ADDRESS tRC CE tACE OE tHZOE tDOE DATA OUT tLZOE HIGH IMPEDANCE tLZCE VCC SUPPLY CURRENT tHZCE HIGH IMPEDANCE DATA VALID tPD tPU 50% 50% ICC ISB Notes 14. Device is continuously selected. OE, CE = VIL. 15. WE is HIGH for read cycle. 16. Address valid prior to or coincident with CE transition LOW. Document Number: 38-05705 Rev. *D Page 8 of 15 [+] Feedback CY7C1046D Switching Waveforms (continued) Write Cycle No. 1 (CE Controlled)[17, 18] tWC ADDRESS tSCE CE tSA tSCE tAW tHA tPWE WE tSD DATA I/O tHD DATA VALID Write Cycle No. 2 (WE Controlled, OE HIGH During Write)[17, 18] tWC ADDRESS tSCE CE tAW tSA tHA tPWE WE OE tSD DATA I/O tHD DATAIN VALID NOTE 19 tHZOE Notes 17. Data I/O is high impedance if OE = VIH. 18. If CE goes HIGH simultaneously with WE going HIGH, the output remains in a high-impedance state. 19. During this period the I/Os are in the output state and input signals should not be applied. Document Number: 38-05705 Rev. *D Page 9 of 15 [+] Feedback CY7C1046D Switching Waveforms (continued) Write Cycle No. 3 (WE Controlled, OE LOW)[20] tWC ADDRESS tSCE CE tAW tHA tSA tPWE WE tSD NOTE 21 DATA I/O tHD DATA VALID tLZWE tHZWE Truth Table CE OE WE H X X High Z I/O0–I/O3 Power-down Mode Standby (ISB) Power L L H Data Out Read Active (ICC) L X L Data In Write Active (ICC) L H H High Z Selected, outputs disabled Active (ICC) Notes 20. If CE goes HIGH simultaneously with WE going HIGH, the output remains in a high-impedance state. 21. During this period the I/Os are in the output state and input signals should not be applied. Document Number: 38-05705 Rev. *D Page 10 of 15 [+] Feedback CY7C1046D Ordering Information Speed (ns) 10 Ordering Code Package Diagram CY7C1046D-10VXI 51-85033 Package Type 32-pin (400-Mil) Molded SOJ (Pb-free) Operating Range Industrial Ordering Code Definitions CY 7 C 1 04 6 D - 10 VX I Temperature Range: I = Industrial Package Type: VX = 32-pin (400-Mil) Molded SOJ (Pb-free) Speed: 10 ns D = C9, 90 nm Technology 6 = Data width × 4-bits 04 = 4-Mbit density 1 = Fast Asynchronous SRAM family Technology Code: C = CMOS 7 = SRAM CY = Cypress Please contact your local Cypress sales representative for availability of these parts. Document Number: 38-05705 Rev. *D Page 11 of 15 [+] Feedback CY7C1046D Package Diagram 32-pin (400-Mil) Molded SOJ (51-85033) 51-85033 *C Document Number: 38-05705 Rev. *D Page 12 of 15 [+] Feedback CY7C1046D Acronyms Document Conventions Acronym Description CMOS complementary metal oxide semiconductor CE chip enable I/O input/output OE output enable SRAM static random access memory TSOP thin small-outline package Units of Measure Symbol Unit of Measure ns nano seconds V Volts µs micro seconds µA micro Amperes mA milli Amperes TTL transistor-transistor logic VFBGA very fine-pitch ball grid array MHz Mega Hertz WE write enable pF pico Farad °C degree Celcius W Watts % percent Document Number: 38-05705 Rev. *D Page 13 of 15 [+] Feedback CY7C1046D Document History Page Document Title: CY7C1046D 4-Mbit (1 M × 4) Static RAM Document Number: 38-05705 REV. ECN NO. of Issue Date Orig. Change Description of Change ** 307613 See ECN RKF New Data Sheet *A 399070 See ECN NXR Changed from Advance to Preliminary Changed address of Cypress Semiconductor Corporation on Page# 1 from “3901 North First Street” to “198 Champion Court” Removed -20 speed bin Removed L-Version Redefined ICC values for Com’l and Ind’l temperature ranges ICC (Com’l): Changed from 70 and 55 mA to 75 and 70 mA for 12 and 15 ns speed bins respectively ICC (Ind’l): Changed from 80, 70 and 55 mA to 90, 85 and 80 mA for 10, 12 and 15 ns speed bins respectively Added Industrial Operating Range Changed reference voltage level for measurement of Hi-Z parameters from 500 mV to 200 mV Changed VCC to 3 V in the Input pulse waveform at the AC Test Loads and Waveforms on page # 3 Changed tSCE from 8 to 7 ns for -10 speed bin Added Truth Table Added 10 ns parts in the Ordering Information table Changed part names from V33 to V324 in the Ordering Information Table Shaded Ordering Information Table *B 459072 See ECN NXR Converted from Preliminary to Final. Removed -12 and -15 Speed bins Removed Commercial Operating Range product information. Changed Maximum Rating for supply voltage from 7V to 6V Changed the Capacitance value of input pins and I/O pins from 6 pF to 8 pF Updated the Thermal Resistance table. Changed tHZWE from 6 ns to 5 ns Added footnote #4 and 11 Updated footnote #7 on High-Z parameter measurement Updated the Ordering Information and replaced Package Name column with Package Diagram in the Ordering Information table. *C 3059162 10/14/2010 PRAS Added Ordering Code Definitions. Updated Package Diagram. *D 3098812 12/01/2010 PRAS Added Acronyms and Units of Measure. Minor edits and updated in new template. Document Number: 38-05705 Rev. *D Page 14 of 15 [+] Feedback CY7C1046D 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 Optical & Image Sensing cypress.com/go/memory cypress.com/go/image PSoC cypress.com/go/psoc Touch Sensing cypress.com/go/touch USB Controllers Wireless/RF cypress.com/go/USB cypress.com/go/wireless © Cypress Semiconductor Corporation, 2005-2010. 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. 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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: 38-05705 Rev. *D Revised December 1, 2010 Page 15 of 15 All products and company names mentioned in this document may be the trademarks of their respective holders. [+] Feedback