CY7C1041BN 256K x 16 Static RAM Features Functional Description • Temperature Ranges — Commercial: 0°C to 70°C The CY7C1041BN is a high-performance CMOS static RAM organized as 262,144 words by 16 bits. — Industrial: –40°C to 85°C — Automotive-A: –40°C to 85°C Writing to the device is accomplished by taking 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 A17). 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 A17). • High speed — tAA = 15 ns • Low active power — 1540 mW (max.) • Low CMOS standby power (L version) Reading from the device is accomplished by taking 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 will appear on I/O0 to I/O7. If Byte High Enable (BHE) is LOW, then data from memory will appear on I/O8 to I/O15. See the truth table at the back of this data sheet for a complete description of read and write modes. — 2.75 mW (max.) • 2.0V Data Retention (400 µW at 2.0V retention) • Automatic power-down when deselected • TTL-compatible inputs and outputs • Easy memory expansion with CE and OE features • Available in Pb-free and non Pb-free 44-pin TSOP II and molded 44-pin (400-Mil) SOJ packages The input/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), the BHE and BLE are disabled (BHE, BLE HIGH), or during a write operation (CE LOW, and WE LOW). The CY7C1041BN is available in a standard 44-pin 400-mil-wide body width SOJ and 44-pin TSOP II package with center power and ground (revolutionary) pinout. Logic Block Diagram Pin Configuration SOJ TSOP II Top View 256K x 16 ARRAY SENSE AMPS A0 A1 A2 A3 A4 A5 A6 A7 A8 ROW DECODER INPUT BUFFER A0 A1 A2 A3 A4 CE I/O0 I/O1 I/O2 I/O3 VCC VSS I/O4 I/O5 I/O6 I/O7 WE A5 A6 A7 A8 A9 I/O0–I/O7 I/O8–I/O15 A9 A10 A 11 A 12 A 13 A14 A15 A16 A17 COLUMN DECODER BHE WE CE OE BLE Cypress Semiconductor Corporation Document #: 001-06496 Rev. *A • 198 Champion Court • 1 44 2 3 43 42 4 41 40 39 38 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 A17 A16 A15 OE BHE BLE I/O15 I/O14 I/O13 I/O12 VSS VCC I/O11 I/O10 I/O9 I/O8 NC A14 A13 A12 A11 A10 San Jose, CA 95134-1709 • 408-943-2600 Revised August 31, 2006 CY7C1041BN Selection Guide -15 Maximum Access Time Maximum Operating Current -20 15 20 ns Commercial 190 170 mA Industrial 210 190 Automotive-A Maximum CMOS Standby Current Unit 190 Commercial Commercial L 3 3 0.5 0.5 6 6 Industrial Automotive-A mA 6 DC Input Voltage[1] ................................ –0.5V to VCC + 0.5V Maximum Ratings (Above which the useful life may be impaired. For user guidelines, not tested.) Current into Outputs (LOW)......................................... 20 mA Operating Range Storage Temperature ................................. –65°C to +150°C Ambient Temperature with Power Applied............................................. –55°C to +125°C Supply Voltage on VCC to Relative GND[1] .... –0.5V to +7.0V DC Voltage Applied to Outputs in High Z State[1] ....................................–0.5V to VCC + 0.5V Range Commercial Ambient Temperature[2] VCC 0°C to +70°C 5V ± 0.5 Industrial –40°C to +85°C Automotive-A –40°C to +85°C Electrical Characteristics Over the Operating Range -15 Parameter Description 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 Min. -20 Max. 2.4 Min. Unit 0.4 V 2.4 0.4 Voltage[1] Max. V 2.2 VCC + 0.5 2.2 VCC + 0.5 V –0.5 0.8 –0.5 0.8 V VIL Input LOW IIX Input Load Current IOZ Output Leakage Current GND < VOUT < VCC, Output Disabled ICC VCC Operating Supply Current VCC = Max., f = fMAX = 1/tRC 190 mA ISB1 Automatic CE Power-Down Current—TTL Inputs Max. VCC, CE > VIH, VIN > VIH or VIN < VIL, f = fMAX 40 40 mA ISB2 Automatic CE Power-Down Current —CMOS Inputs Max. VCC, CE > VCC – 0.3V, Comm’l VIN > VCC – 0.3V, Comm’l L or VIN < 0.3V, f = 0 Ind’l 3 3 mA 0.5 0.5 mA 6 6 mA 6 mA GND < VI < VCC –1 +1 –1 +1 mA –1 +1 –1 +1 mA Comm’l 190 170 mA Ind’l 210 190 mA Auto-A Auto-A Notes: 1. VIL (min.) = –2.0V for pulse durations of less than 20 ns. 2. TA is the case temperature. 3. Tested initially and after any design or process changes that may affect these parameters. Document #: 001-06496 Rev. *A Page 2 of 10 CY7C1041BN Capacitance[3] Parameter Description CIN Input Capacitance COUT I/O Capacitance Test Conditions Max. Unit 8 pF 8 pF TA = 25°C, f = 1 MHz, VCC = 5.0V AC Test Loads and Waveforms ALL INPUT PULSES R1 481Ω R1 481Ω 5V 5V OUTPUT 3.0V 90% OUTPUT R2 255Ω 30 pF 5 pF INCLUDING JIG AND SCOPE (a) R2 255Ω 90% 10% 10% GND ≤ 3 ns INCLUDING JIG AND SCOPE (b) ≤ 3 ns THÉVENIN EQUIVALENT 167Ω 1.73V OUTPUT Equivalent to: Switching Characteristics[4] Over the Operating Range -15 Parameter Description Min. -20 Max. Min. Max. Unit Read Cycle tpower VCC(typical) to the First Access[5] 1 tRC Read Cycle Time 15 tAA Address to Data Valid tOHA Data Hold from Address Change tACE CE LOW to Data Valid tDOE OE LOW to Data Valid tLZOE OE LOW to Low Z tHZOE tLZCE OE HIGH to High CE LOW to Low Z[7] 20 15 3 3 7 0 3 20 ns 8 ns ns 8 3 7 ns ns 0 7 Z[6, 7] ns 20 15 Z[6, 7] µs 1 ns ns tHZCE CE HIGH to High tPU CE LOW to Power-Up tPD CE HIGH to Power-Down 15 20 ns tDBE Byte Enable to Data Valid 7 8 ns tLZBE Byte Enable to Low Z tHZBE Byte Disable to High Z 8 ns 0 8 0 0 0 7 ns ns ns Notes: 4. Test conditions assume signal transition time of 3 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V, and output loading of the specified IOL/IOH and 30-pF load capacitance. 5. This part has a voltage regulator which steps down the voltage from 5V to 3.3V internally. tpower time has to be provided initially before a read/write operation is started. 6. tHZOE, tHZCE, and tHZWE are specified with a load capacitance of 5 pF as in part (b) of AC Test Loads. Transition is measured ±500 mV from steady-state voltage. 7. 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. Document #: 001-06496 Rev. *A Page 3 of 10 CY7C1041BN Switching Characteristics[4] Over the Operating Range (continued) -15 Parameter Write Cycle Description Min. -20 Max. Min. Max. Unit [8, 9] tWC Write Cycle Time 15 20 ns tSCE CE LOW to Write End 12 13 ns tAW Address Set-Up to Write End 12 13 ns tHA Address Hold from Write End 0 0 ns tSA Address Set-Up to Write Start 0 0 ns tPWE WE Pulse Width 12 13 ns tSD Data Set-Up to Write End 8 9 ns tHD Data Hold from Write End 0 0 ns tLZWE WE HIGH to Low Z[7] 3 3 ns tHZWE WE LOW to High Z[6, 7] tBW Byte Enable to End of Write 7 12 8 13 ns ns Data Retention Characteristics Over the Operating Range (L version only) Parameter VDR VCC for Data Retention ICCDR tCDR Conditions[11] Description Chip Deselect to Data Retention Time tR[10] Max. 2.0 Data Retention Current [3] Min. Operation Recovery Time VCC = VDR = 2.0V, CE > VCC – 0.3V, VIN > VCC – 0.3V or VIN < 0.3V Unit V 200 µA 0 ns tRC ns Data Retention Waveform DATA RETENTION MODE VCC 3.0V tCDR VDR > 2V 3.0V tR CE Notes: 8. 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. 9. The minimum write cycle time for Write Cycle no. 3 (WE controlled, OE LOW) is the sum of tHZWE and tSD. 10. tr < 3 ns for the -15 speed. tr < 5 ns for the -20 and slower speeds. 11. No input may exceed VCC + 0.5V. Document #: 001-06496 Rev. *A Page 4 of 10 CY7C1041BN Switching Waveforms Read Cycle No. 1[12, 13] tRC ADDRESS tAA tOHA DATA OUT PREVIOUS DATA VALID DATA VALID Read Cycle No. 2 (OE Controlled)[13, 14] ADDRESS tRC CE tACE OE tHZOE tDOE BHE, BLE tLZOE tHZCE tDBE tLZBE DATA OUT HIGH IMPEDANCE tLZCE VCC SUPPLY CURRENT tHZBE HIGH IMPEDANCE DATA VALID tPD tPU 50% ICC 50% ISB Notes: 12. Device is continuously selected. OE, CE, BHE, and/or BHE = VIL. 13. WE is HIGH for read cycle. 14. Address valid prior to or coincident with CE transition LOW. Document #: 001-06496 Rev. *A Page 5 of 10 CY7C1041BN Switching Waveforms (continued) Write Cycle No. 1 (CE Controlled)[15, 16] tWC ADDRESS CE tSA tSCE tAW tHA tPWE WE tBW BHE, BLE tSD tHD DATAI/O Write Cycle No. 2 (BLE or BHE Controlled) tWC ADDRESS BHE, BLE tSA tBW tAW tHA tPWE WE tSCE CE tSD tHD DATAI/O Notes: 15. Data I/O is high impedance if OE or BHE and/or BLE= VIH. 16. If CE goes HIGH simultaneously with WE going HIGH, the output remains in a high-impedance state. Document #: 001-06496 Rev. *A Page 6 of 10 CY7C1041BN Switching Waveforms (continued) Write Cycle No. 3 (WE Controlled, OE LOW) tWC ADDRESS tSCE CE tAW tHA tSA tPWE WE tBW BHE, BLE tHZWE tSD tHD DATA I/O tLZWE Truth Table CE OE WE BLE BHE H X X X X High Z High Z Power Down Standby (ISB) L L H L L Data Out Data Out Read All bits Active (ICC) L L H L H Data Out High Z Read Lower bits only Active (ICC) L L H H L High Z Data Out Read Upper bits only Active (ICC) L X L L L Data In Data In Write All bits Active (ICC) L X L L H Data In High Z Write Lower bits only Active (ICC) L X L H L High Z Data In Write Upper bits only Active (ICC) L H H X X High Z High Z Selected, Outputs Disabled Active (ICC) Document #: 001-06496 Rev. *A I/O0–I/O7 I/O8–I/O15 Mode Power Page 7 of 10 CY7C1041BN Ordering Information Speed (ns) 15 Ordering Code CY7C1041BN-15VC Package Name 51-85082 CY7C1041BN-15VXC CY7C1041BN-15ZC 44-pin (400-Mil) Molded SOJ 51-85087 Commercial 44-pin TSOP Type II 44-pin TSOP Type II (Pb-free) CY7C1041BNL-15ZC 44-pin TSOP Type II CY7C1041BNL-15ZXC 44-pin TSOP Type II (Pb-free) CY7C1041BN-15ZI 44-pin TSOP Type II CY7C1041BN-15ZXI 44-pin TSOP Type II (Pb-free) 51-85082 44-pin (400-Mil) Molded SOJ (Pb-free) CY7C1041BN-20VXC 44-pin (400-Mil) Molded SOJ (Pb-free) CY7C1041BNL-20VXC 44-pin (400-Mil) Molded SOJ (Pb-free) 51-85087 Industrial 44-pin (400-Mil) Molded SOJ CY7C1041BN-15VXI CY7C1041BN-20ZC Operating Range 44-pin (400-Mil) Molded SOJ (Pb-free) CY7C1041BN-15ZXC CY7C1041BN-15VI 20 Package Type Commercial 44-pin TSOP Type II CY7C1041BN-20ZXC 44-pin TSOP Type II (Pb-free) CY7C1041BN-20ZI 44-pin TSOP Type II CY7C1041BN-20ZXI 44-pin TSOP Type II (Pb-free) CY7C1041BN-20VXI 51-85082 44-pin (400-Mil) Molded SOJ (Pb-free) CY7C1041BN-20ZSXA 51-85087 44-pin TSOP Type II Industrial Automotive-A Please contact local sales representative regarding availability of these parts. Package Diagrams 44-pin (400-Mil) Molded SOJ (51-85082) 51-85082-*B Document #: 001-06496 Rev. *A Page 8 of 10 CY7C1041BN Package Diagrams (continued) 44-Pin TSOP II (51-85087) 51-85087-*A All products and company names mentioned in this document may be the trademarks of their respective holders. Document #: 001-06496 Rev. *A Page 9 of 10 © Cypress Semiconductor Corporation, 2006. 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. CY7C1041BN Document History Page Document Title: CY7C1041BN 256K x 16 Static RAM Document Number: 001-06496 REV. ECN NO. Issue Date Orig. of Change Description of Change ** 424111 See ECN NXR New Data Sheets *A 498575 See ECN NXR Added Automotive-A operating range updated Ordering Information Table Document #: 001-06496 Rev. *A Page 10 of 10