My Inquiry
My Account
Infineon Technologies CY6264-70SNXA
- Part No.:
- CY6264-70SNXA
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
CY6264-70SNXA.pdf
- Description:
- IC SRAM 64KBIT PARALLEL 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,921
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY6264-70SNXA from Cypress Semiconductor is an 8K × 8 (64 Kbit) CMOS static RAM with 70 ns access time, TTL-compatible I/O, and dual chip enable (CE1 active LOW, CE2 active HIGH) for flexible memory expansion in embedded systems. It operates at 5V ±10%, supports commercial temperature range (0°C to +70°C), and features automatic power-down via CE1, reducing standby current to 15 mA.
For engineers reviewing the CY6264-70SNXA datasheet, CY6264-70SNXA pinout, CY6264-70SNXA application, or CY6264-70SNXA equivalent, key selection criteria include access timing consistency under 30-pF load, CE1-controlled low-power state entry/exit timing (tPD = 30 ns), and SOIC-28 pin compatibility with legacy 6264-family designs.
Technical Context
The CY6264-70SNXA implements a full static RAM architecture with asynchronous read/write control, using separate CE1, CE2, OE, and WE signals to manage device selection, output enable, and write initiation. Its 13-bit address bus (A0–A12) decodes 8192 locations, and eight bidirectional I/O lines (I/O0–I/O7) share data paths with three-state drivers.
Power management is handled through CE1-driven automatic power-down: when CE1 is HIGH (≥ VCC – 0.3 V), ICC drops to ISB2 = 15 mA (commercial), independent of OE or WE state. The device uses a die coat for alpha particle immunity and meets MIL-STD-883 Class 1A latch-up immunity (>200 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 8K × 8 (65,536 bits), enabling byte-wide data access without external demultiplexing |
| Access Time | 70 ns max - guarantees data validity within 70 ns after address/CE1/OE setup, critical for 14 MHz bus timing |
| Supply Voltage | 5.0 V ±10% - compatible with standard TTL/CMOS logic rails; no external regulator required |
| Standby Current | 15 mA (ISB2, commercial) - enables low-power hold mode during CPU idle cycles without external sleep control |
| Input/Output Compatibility | TTL-compatible VIH/VIL and VOH/VOL - interoperable with 74LS, 74HC, and microcontroller GPIO without level-shifting |
| Package | 28-pin SOIC (300-mil body, SN28 outline) - surface-mount compatible with standard reflow profiles and IPC-7351B land patterns |
| Operating Temperature | 0°C to +70°C - validated for commercial-grade industrial control panels and instrumentation front-ends |
Pinout & Package
Package: 28-pin narrow-body SOIC (300-mil width, SN28 footprint), JEDEC MS-012AC compliant, Pb-free (RoHS-compliant) variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A12 | Address Inputs | 13-bit binary address bus selecting one of 8192 memory locations; no internal latching |
| I/O0–I/O7 | Bidirectional Data Bus | Three-state CMOS I/O pins shared for read data output and write data input; high-impedance when deselected or OE inactive |
| CE1 | Active-LOW Chip Enable | Primary selection and power-down control: HIGH forces automatic standby mode (ISB2 = 15 mA) |
| CE2 | Active-HIGH Chip Enable | Secondary enable used with CE1 for hierarchical memory decoding (e.g., bank selection) |
| OE | Active-LOW Output Enable | Controls output driver enable only; does not affect power state - outputs float if CE1 HIGH |
| WE | Active-LOW Write Enable | Initiates write cycle when CE1 LOW and CE2 HIGH; rising edge terminates write operation |
| VCC, GND | Power Supply | Single 5V supply; decoupling capacitor (0.1 µF) required at each VCC pin per datasheet layout guidance |
Key Features
| Feature | Design Value |
|---|---|
| Dual Chip Enable Architecture | CE1 (active LOW) and CE2 (active HIGH) allow cascaded memory mapping across multiple 64 Kbit banks without external logic |
| Automatic Power-Down | CE1 HIGH reduces ICC to 15 mA (commercial) - eliminates need for external power-gating circuitry in battery-backed systems |
| 70 ns Read/Write Timing | tAA = 70 ns, tWC = 70 ns - supports direct interface with 80C31, Z80, and 68000 derivatives running at ≤14 MHz system clocks |
| TTL-Compatible I/O | VIH = 2.2 V min, VOL = 0.4 V max - ensures reliable interfacing with legacy microcontrollers lacking 3.3V-tolerant inputs |
| Alpha Particle Immunity | Die coat protection - prevents single-event upsets in medical and industrial environments with elevated background radiation |
Applications
| Industrial PLC Data Buffer | Legacy Microcontroller Expansion Memory |
|---|---|
Use Scenario: Stores real-time I/O status and configuration registers in programmable logic controllers with 8-bit parallel buses. IC Role / Device Role / Timing Role: Byte-accessible SRAM providing non-refreshed, deterministic 70 ns read/write latency for scan-cycle data exchange. Use Value: Eliminates wait states on 8051-based control engines; CE1-driven power-down cuts idle power by >70% during watchdog timeout intervals. | Use Scenario: Adds external RAM to Z80 or 6502-based retro-computing platforms requiring >64 KB address space. IC Role / Device Role / Timing Role: Drop-in replacement for obsolete 6264 variants, maintaining identical pinout and AC timing margins. Use Value: Enables full 64 KB memory map without bus transceivers or glue logic due to TTL-compatible voltage thresholds. |
| Medical Instrumentation FIFO Buffer | Automotive Diagnostic Tool Memory |
Use Scenario: Buffers sensor acquisition data streams in portable ECG monitors with intermittent host polling. IC Role / Device Role / Timing Role: High-reliability SRAM holding raw ADC samples between USB transfers; die coat prevents soft errors. Use Value: Sustains data integrity over 10+ years field life without ECC overhead or refresh controller complexity. | Use Scenario: Stores OBD-II protocol translation tables and session logs in handheld vehicle diagnostic tools. IC Role / Device Role / Timing Role: Non-volatile backup memory (with external battery) retaining calibration data during ignition-off periods. Use Value: CE1-controlled standby draws only 15 mA - extends 3.7 V Li-ion battery life to >12 months in storage mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISSI IS62C256AL-70QLI | 32K × 8 organization, 70 ns access, same SOIC-28 package but 5V-only (no 5V ±10%) | Higher density; requires address line remapping (A13 needed); lacks CE2 pin | Select when memory expansion beyond 64 KB is required and board layout allows A13 routing |
| Renesas R1LV064A-70JL | 64K × 1 organization, 70 ns, SOIC-28, but byte-wide access requires external multiplexing | Requires 8× parallel devices or bus transceivers for byte interface; higher BOM cost | Choose only if legacy design mandates Renesas qualification or long-term supply assurance beyond Cypress lifecycle |
Compared with IS62C256AL-70QLI and R1LV064A-70JL, the CY6264-70SNXA provides exact 8K × 8 byte alignment, dual CE support for seamless bank switching, and guaranteed 5V ±10% tolerance - making it optimal for retrofitting aging 8-bit systems where signal integrity and timing margin are constrained.
Availability
CY6264-70SNXA is available at Aetrix Electronics and suitable for industrial PLC data buffering, legacy microcontroller expansion memory, and medical instrumentation FIFO buffer applications requiring stable component supply and long-lifecycle support.
Supply support for CY6264-70SNXA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Cypress Semiconductor (now part of Infineon Technologies) is a U.S.-based semiconductor company specializing in memory, PSoC, and USB solutions for industrial and automotive markets.
The CY6264 belongs to Cypress's legacy parallel SRAM product line, designed specifically for drop-in replacement of industry-standard 28-pin 6264 devices in cost-sensitive, reliability-critical 8-bit embedded systems.
FAQ
Is CY6264-70SNXA RoHS-compliant and lead-free?
Yes. The "X" suffix in CY6264-70SNXA denotes a Pb-free (RoHS-compliant) version with matte tin lead finish, qualified per J-STD-020D moisture sensitivity level 3, and compatible with standard SnPb and lead-free reflow profiles.
What is the minimum pulse width requirement for WE during write operations?
The minimum WE pulse width (tPWE) is 40 ns for CY6264-70SNXA. This ensures reliable write capture across voltage and temperature extremes; shorter pulses risk partial or failed writes, especially at VCC = 4.5 V and TA = 70°C.
Can CE1 and CE2 be tied together for simplified decoding?
No. CE1 is active LOW and CE2 is active HIGH; tying them directly creates a permanent deselect condition. To simplify decoding, use an inverter on CE2 or route CE2 to VCC (fixed HIGH) and control selection solely via CE1 and OE.
Does CY6264-70SNXA require external pull-up resistors on I/O lines?
No. The I/O pins have no internal pull-ups and must be externally terminated only if bus contention or floating-bus noise is observed. In standard microcontroller interfaces with driven buses, no pull-ups are needed - outputs go high-Z when deselected or OE inactive.
CY6264-70SNXA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- MOBL™
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 64Kbit
- Memory Organization:
- 8K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 70ns
- Access Time:
- 70 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SOIC
CY6264-70SNXA FAQ
1.How can I place an order for CY6264-70SNXA through Aetrix?
Please submit a Request for Quotation (RFQ) for CY6264-70SNXA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY6264-70SNXA reliable?
The price and inventory of CY6264-70SNXA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY6264-70SNXA is usually 5 days.
3.What payment methods are accepted for CY6264-70SNXA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY6264-70SNXA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY6264-70SNXA?
CY6264-70SNXA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY6264-70SNXA order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY6264-70SNXA?
For technical support, including CY6264-70SNXA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY6264-70SNXA requirements.
6.How does Aetrix verify that CY6264-70SNXA is sourced from the original manufacturer or authorized distributors?
All CY6264-70SNXA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY6264-70SNXA meets industry standards.
7.What is the process for return or replacement of CY6264-70SNXA?
All CY6264-70SNXA units undergo pre-shipment inspection (PSI). If there is an issue with CY6264-70SNXA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY6264-70SNXA part is unused and in its original packaging.
Return procedure for CY6264-70SNXA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY6264-70SNXA Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
Machine vision system guide covering components, inspection workflow, camera and lens selection, FOV, pixel resolution, motion blur, strobe lighting, bandwidth, 2D/3D vision, integration, troubleshooti…
Electronic devices and circuits guide covering passive components, semiconductors, analog and digital circuits, circuit theory, practical calculations, troubleshooting, datasheet selection, and learnin…
