CY62256V 256K (32K x 8) Static RAM Functional Description[1] Features • High Speed The CY62256V family is composed of two high-performance CMOS static RAM’s organized as 32K words by 8 bits. Easy memory expansion is provided by an active LOW chip enable (CE) and active LOW output enable (OE) and Tri-state drivers. These devices have an automatic power-down feature, reducing the power consumption by over 99% when deselected. — 70 ns • Temperature Ranges — Commercial: 0°C to 70°C — Industrial: –40°C to 85°C — Automotive: –40°C to 125°C • CMOS for optimum speed/power An active LOW write enable signal (WE) controls the writing/reading operation of the memory. When CE and WE inputs are both LOW, data on the eight data input/output pins (I/O0 through I/O7) is written into the memory location addressed by the address present on the address pins (A0 through A14). Reading the device is accomplished by selecting the device and enabling the outputs, CE and OE active LOW, while WE remains inactive or HIGH. Under these conditions, the contents of the location addressed by the information on address pins are present on the eight data input/output pins. • Available in a Pb-free and non Pb-free standard 28-pin narrow SOIC, 28-pin TSOP-1 and 28-pin Reverse TSOP-1 packages The input/output pins remain in a high-impedance state unless the chip is selected, outputs are enabled, and write enable (WE) is HIGH. • Low voltage range: — 2.7V – 3.6V • Low active power and standby power • Easy memory expansion with CE and OE features • TTL-compatible inputs and outputs • Automatic power-down when deselected Logic Block Diagram I/O0 INPUTBUFFER I/O1 32K × 8 ARRAY I/O2 SENSE AMPS ROW DECODER A10 A9 A8 A7 A6 A5 A4 A3 A2 I/O3 I/O4 I/O5 CE WE COLUMN DECODER I/O6 POWER DOWN I/O7 A12 A11 A1 A0 A13 A14 OE Note: 1. For best practice recommendations, please refer to the Cypress application note “System Design Guidelines” on http://www.cypress.com. Cypress Semiconductor Corporation Document #: 38-05057 Rev. *F • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600 Revised July 25, 2006 [+] Feedback CY62256V Product Portfolio Power Dissipation VCC Range (V) Product CY62256VLL Range Com’l/Ind’l Speed Operating, ICC (mA) Standby, ISB2 (µA) Min. Typ.[2] Max. (ns) Typ.[2] Max. Typ.[2] Max. 2.7 3.0 3.6 70 11 30 0.1 5 Automotive 130 Pin Configurations Narrow SOIC Top View A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 I/O0 I/O1 I/O2 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VCC WE A4 A3 A2 A1 OE A0 CE I/O7 I/O6 I/O5 I/O4 I/O3 A11 A10 A9 A8 A7 A6 A5 VCC WE A4 A3 A2 A1 OE 7 6 8 9 5 4 3 2 10 11 12 13 14 15 16 17 18 1 28 27 26 25 24 23 22 TSOP I Reverse Pinout Top View (not to scale) 19 20 21 A12 A13 A14 I/O0 I/O1 I/O2 GND I/O3 I/O4 I/O5 I/O6 I/O7 CE A0 OE A1 A2 A3 A4 WE VCC A5 A6 A7 A8 A9 A10 A11 21 22 23 24 25 26 27 28 1 2 3 4 5 6 7 TSOP I Top View (not to scale) 20 19 18 17 16 15 14 13 12 11 10 9 8 A0 CE I/O7 I/O6 I/O5 I/O4 I/O3 GND I/O2 I/O1 I/O0 A14 A13 A12 Pin Definitions Pin Number Type Description 1–10, 21, 23–26 Input A0–A14. Address Inputs 11–13, 15–19 Input/Output I/O0–I/O7. Data lines. Used as input or output lines depending on operation 27 Input/Control WE. When selected LOW, a WRITE is conducted. When selected HIGH, a READ is conducted 20 Input/Control CE. When LOW, selects the chip. When HIGH, deselects the chip 22 Input/Control OE. Output Enable. Controls the direction of the I/O pins. When LOW, the I/O pins behave as outputs. When deasserted HIGH, I/O pins are Tri-stated, and act as input data pins 14 Ground GND. Ground for the device 28 Power Supply VCC. Power supply for the device Note: 2. Typical values are included for reference only and are not guaranteed or tested. Typical values are measured at VCC = VCC(typ.), TA = 25°C, and tAA = 70 ns. Document #: 38-05057 Rev. *F Page 2 of 12 [+] Feedback CY62256V Maximum Ratings Output Current into Outputs (LOW)............................. 20 mA (Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ................................. –65°C to +150°C Ambient Temperature with Power Applied............................................. –55°C to +125°C Supply Voltage to Ground Potential (Pin 28 to Pin 14) ........................................... –0.5V to +4.6V DC Voltage Applied to Outputs in High-Z State[3] ....................................–0.5V to VCC + 0.5V Static Discharge Voltage.......................................... > 2001V (per MIL-STD-883, Method 3015) Latch-up Current.................................................... > 200 mA Operating Range Device Range CY62256V Commercial [3] DC Input Voltage .................................–0.5V to VCC + 0.5V Ambient Temperature (TA)[4] VCC 0°C to +70°C 2.7V to 3.6V Industrial −40°C to +85°C Automotive −40°C to +125°C Electrical Characteristics Over the Operating Range CY62256V-70 Parameter Description Test Conditions Min. VOH Output HIGH Voltage IOH = −1.0 mA VCC = 2.7V VOL Output LOW Voltage IOL = 2.1 mA VCC = 2.7V VIH Input HIGH Voltage VIL Input LOW Voltage IIX Input Leakage Current IOZ Output Leakage Current Typ.[2] Max. 2.4 Unit V 0.4 V 2.2 VCC +0.3V V –0.5 0.8 V Com’l, Ind’l –1 +1 µA Automotive –10 +10 µA GND < VIN < VCC, Output Disabled Com’l, Ind’l –1 +1 µA Automotive –10 +10 µA GND < VIN < VCC ICC VCC Operating Supply Current VCC = 3.6V, IOUT = 0 mA, f = fMax = 1/tRC All ranges 11 30 mA ISB1 Automatic CE Power-down Current— TTL Inputs VCC = 3.6V, CE > VIH, VIN > VIH or VIN < VIL, f = fMax All ranges 100 300 µA ISB2 Automatic CE Power-down Current— CMOS Inputs Com’l VCC = 3.6V, CE > VCC – 0.3V VIN > VCC – 0.3V or VIN < 0.3V, f = 0 Ind’l 0.1 5 µA 0.1 10 0.1 130 Automotive Notes: 3. VIL (min.) = –2.0V for pulse durations of less than 20 ns. 4. TA is the “Instant-On” case temperature. Document #: 38-05057 Rev. *F Page 3 of 12 [+] Feedback CY62256V Capacitance[5] Parameter Description CIN Input Capacitance COUT Output Capacitance Test Conditions Max. Unit 6 pF 8 pF TA = 25°C, f = 1 MHz, VCC = VCC(typ.) Thermal Resistance Parameter Description Test Conditions ΘJA Thermal Resistance (Junction to Ambient)[6] ΘJC Thermal Resistance (Junction to Case)[5] Still Air, soldered on a 3 × 4.5 inch, 2-layer printed circuit board SOIC TSOPI RTSOPI Unit 68.45 87.62 87.62 °C/W 26.94 23.73 23.73 °C/W AC Test Loads and Waveforms R1 VCC ALL INPUT PULSES OUTPUT VCC R2 50 pF 90% 10% 90% 10% GND < 5 ns < 5 ns INCLUDING JIG AND SCOPE Equivalent to: THEVENIN EQUIVALENT RTH OUTPUT Parameter VTH 3.3V Units R1 1100 Ohms R2 1500 Ohms RTH 645 Ohms VTH 1.750 Volts Data Retention Characteristics (Over the Operating Range) Parameter Conditions[6] Description VDR VCC for Data Retention ICCDR Data Retention Current Typ.[2] Min. Max. 1.4 tCDR[6] Chip Deselect to Data Retention Time tR[6] Operation Recovery Time VCC = 1.4V, CE > VCC – 0.3V, VIN > VCC – 0.3V or VIN < 0.3V Unit V Com’l 0.1 3 Ind’l 0.1 6 Auto 0.1 50 µA 0 ns tRC ns Data Retention Waveform DATA RETENTION MODE VCC VCC(min) VDR > 1.4V tCDR VCC(min) tR CE Notes: 5. Tested initially and after any design or process changes that may affect these parameters. 6. No input may exceed VCC + 0.3V. Document #: 38-05057 Rev. *F Page 4 of 12 [+] Feedback CY62256V Switching Characteristics Over the Operating Range[7] CY62256V-70 Parameter Description Min. Max. Unit Read Cycle tRC Read Cycle Time 70 tAA Address to Data Valid tOHA Data Hold from Address Change tACE CE LOW to Data Valid 70 ns tDOE OE LOW to Data Valid 35 ns tLZOE OE LOW to Low-Z[8] 70 10 OE HIGH to tLZCE CE LOW to Low-Z[8] tHZCE CE HIGH to tPU CE LOW to Power-up tPD CE HIGH to Power-down ns 25 10 High-Z[8, 9] ns ns 5 High-Z[8, 9] tHZOE ns ns ns 25 0 ns ns 70 ns Write Cycle[10, 11] tWC Write Cycle Time 70 ns tSCE CE LOW to Write End 60 ns tAW Address Set-up to Write End 60 ns tHA Address Hold from Write End 0 ns tSA Address Set-up to Write Start 0 ns tPWE WE Pulse Width 50 ns tSD Data Set-up to Write End 30 ns tHD Data Hold from Write End 0 ns High-Z[8, 9] tHZWE WE LOW to tLZWE WE HIGH to Low-Z[8] 25 10 ns ns Notes: 7. Test conditions assume signal transition time of 5 ns or less timing reference levels of VCC/2, input pulse levels of 0 to VCC, and output loading of the specified IOL/IOH and 50 pF load capacitance. 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. tHZOE, tHZCE, and tHZWE are specified with CL = 5 pF as in (b) of AC Test Loads. Transition is measured ± 200 mV from steady-state voltage. 10. The internal write time of the memory is defined by the overlap of CE LOW and WE LOW. Both signals must be LOW to initiate a write and either signal can terminate a write by going HIGH. The data input set-up and hold timing should be referenced to the rising edge of the signal that terminates the write. 11. The minimum write cycle time for write cycle #3 (WE controlled, OE LOW) is the sum of tHZWE and tSD. Document #: 38-05057 Rev. *F Page 5 of 12 [+] Feedback CY62256V Switching Waveforms Read Cycle No. 1 (Address Transition Controlled)[12, 13] tRC ADDRESS tOHA DATA OUT tAA PREVIOUS DATA VALID DATA VALID Read Cycle No. 2 (OE Controlled)[13, 14] t RC CE tACE OE DATA OUT t HZOE tHZCE tDOE t LZOE HIGH IMPEDANCE HIGH IMPEDANCE DATA VALID tLZCE t PD t PU ICC VCC SUPPLY CURRENT 50% 50% ISB Write Cycle No. 1 (WE Controlled)[10, 15, 16] tWC ADDRESS CE tAW tSA tHA t PWE WE OE tSD DATA I/O NOTE 17 tHD DATAINVALID t HZOE Notes: 12. Device is continuously selected. OE, CE = VIL. 13. WE is HIGH for read cycle. 14. Address valid prior to or coincident with CE transition LOW. 15. Data I/O is high impedance if OE = VIH. 16. If CE goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state. 17. During this period, the I/Os are in output state and input signals should not be applied. Document #: 38-05057 Rev. *F Page 6 of 12 [+] Feedback CY62256V Switching Waveforms (continued) Write Cycle No. 2 (CE Controlled)[10, 15, 16] tWC ADDRESS tSCE CE tSA tAW tHA WE tSD t HD DATAINVALID DATA I/O Write Cycle No. 3 (WE Controlled, OE LOW)[11, 16] tWC ADDRESS CE tAW t HA tSA WE tSD DATA I/O NOTE 17 DATA INVALID t HZWE Document #: 38-05057 Rev. *F t HD tLZWE Page 7 of 12 [+] Feedback CY62256V Typical DC and AC Characteristics 1.4 1.6 1.4 1.2 2.5 1.0 2.0 0.4 0.0 25 125 2.5 1.6 2.0 1.4 NORMALIZED t AA VCC = 3.0V TA = 25°C 1.0 0.0 1.65 VCC = 2.5V 1.2 1.0 0.8 0.5 2.1 2.6 3.1 3.6 0.6 −55 25 125 OUTPUT SOURCE CURRENT (mA) 3. 3V = 2. 5V 105 OUTPUT SINK CURRENT 14 vs. OUTPUT VOLTAGE 12 10 8 6 VCC = 2.5 V 4 TA = 25°C 2 0 0.0 1.0 2.0 3.0 OUTPUT VOLTAGE (V) AMBIENT TEMPERATURE (°C) SUPPLY VOLTAGE (V) 25 AMBIENT TEMPERATURE (°C) AMBIENT TEMPERATURE (°C) NORMALIZED ACCESS TIME vs. AMBIENT TEMPERATURE NORMALIZED ACCESS TIME vs. SUPPLY VOLTAGE ISB –0.5 −55 = 0.2 0.0 −55 3.6 3.2 2.8 2.4 2.0 1.8 1.6 0.5 SUPPLY VOLTAGE (V) 1.5 1.0 0.4 OUTPUT SINK CURRENT (mA) 0.6 0.6 1.5 cc TA= 25°C VCC = 2.5V cc 0.8 0.8 V 1.0 V 1.2 3.0 VCC = 3.0V ISB2 µA NORMALIZED I CC NORMALIZED ICC 1.8 0.2 NORMALIZED t AA STANDBY CURRENT vs. AMBIENT TEMPERATURE NORMALIZED SUPPLY CURRENT vs. AMBIENT TEMPERATURE NORMALIZED SUPPLY CURRENT vs. SUPPLY VOLTAGE OUTPUT SOURCE CURRENT vs. OUTPUT VOLTAGE –14 –12 –10 –8 –6 VCC = 2.5V TA = 25°C –4 0 0.0 0.5 1.0 1.5 2 2.5 OUTPUT VOLTAGE (V) Document #: 38-05057 Rev. *F Page 8 of 12 [+] Feedback CY62256V Typical DC and AC Characteristics (continued) TYPICAL ACCESS TIME CHANGE vs. OUTPUT LOADING NORMALIZED I CC vs.CYCLE TIME 1.25 25.0 T = 25°C A VCC = 3V 20.0 NORMALIZED ICC DELTA tAA (ns) 30.0 15.0 10.0 VCC = 3.0V 1.00 TA = 25°C VIN = 0.5V 0.75 5.0 0.0 0 200 400 600 0.50 1 800 1000 10 20 30 CYCLE FREQUENCY (MHz) CAPACITANCE (pF) Truth Table CE WE OE Inputs/Outputs Mode Power H X X High-Z Deselect/Power-down Standby (ISB) L H L Data Out Read Active (ICC) L L X Data In Write Active (ICC) L H H High-Z Deselect, Output Disabled Active (ICC) Ordering Information Speed (ns) 70 Ordering Code Package Diagram Package Type CY62256VLL-70SNC 51-85092 28-pin (300-mil Narrow Body) SNC CY62256VLL-70SNXC CY62256VLL-70ZC 51-85071 28-pin TSOP I 28-pin TSOP I (Pb-Free) CY62256VLL-70SNXI 51-85092 28-pin (300-mil Narrow Body) SNC (Pb-Free) CY62256VLL-70ZI 51-85071 28-pin TSOP I CY62256VLL-70ZXI 51-85074 51-85092 CY62256VLL-70ZRXE 28-pin (300-mil Narrow Body) SNC Automotive 28-pin (300-mil Narrow Body) SNC (Pb-Free) 51-85071 CY62256VLL-70ZXE CY62256VLL-70ZRE 28-pin Reverse TSOP I 28-pin Reverse TSOP I (Pb-Free) CY62256VLL-70SNXE CY62256VLL-70ZE Industrial 28-pin TSOP I (Pb-Free) CY62256VLL-70ZRXI CY62256VLL-70SNE Commercial 28-pin (300-mil Narrow Body) SNC (Pb-Free) CY62256VLL-70ZXC CY62256VLL-70ZRI Operating Range 28-pin TSOP I 28-pin TSOP I (Pb-Free) 51-85074 28-pin Reverse TSOP I 28-pin Reverse TSOP I (Pb-Free) Please contact your local Cypress sales representative for availability of these parts Document #: 38-05057 Rev. *F Page 9 of 12 [+] Feedback CY62256V Package Diagrams 28-pin (300-mil) SNC (Narrow Body) (51-85092) 51-85092-*B 28-pin Thin Small Outline Package Type 1 (8 × 13.4 mm) (51-85071) 51-85071-*G Document #: 38-05057 Rev. *F Page 10 of 12 [+] Feedback CY62256V Package Diagrams (continued) 28-pin Reverse Thin Small Outline Package Type 1 (8 × 13.4 mm) (51-85074) 51-85074-*F All product and company names mentioned in this document are the trademarks of their respective holders. Document #: 38-05057 Rev. *F Page 11 of 12 © 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. [+] Feedback CY62256V Document History Page Document Title: CY62256V, 256K (32K x 8) Static RAM Document Number: 38-05057 REV. ECN NO. Issue Date Orig. of Change Description of Change ** 107248 09/10/01 SZV Changed from spec number: 38-00519 to 38-05057 *A 111445 11/01/01 MGN Removed obsolete parts. Change to standard format *B 115229 05/23/02 GBI Changed SN package diagram *C 116507 09/04/02 GBI Added footnote 1 Clarified ICC spec for VCC(typ) = 2.5V *D 239134 See ECN AJU Added Automotive product information *E 344595 See ECN SYT Added Pb-Free packages on page# 10 *F 493277 See ECN VKN Changed address of Cypress Semiconductor Corporation on Page# 1 from “3901 North First Street” to “198 Champion Court” Removed part # CY62256V25LL from the product offering Updated Ordering Information Table Document #: 38-05057 Rev. *F Page 12 of 12 [+] Feedback