My Inquiry
My Account
Infineon Technologies CY62256VLL-70ZRXIT
- Part No.:
- CY62256VLL-70ZRXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 28-TSSOP (0.465", 11.80mm Width)
- Datasheet:
-
CY62256VLL-70ZRXIT.pdf
- Description:
- IC SRAM 256KBIT PAR 28TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:1,592
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY62256VLL-70ZRXIT from Cypress Semiconductor is a 256 Kbit (32K × 8) CMOS static RAM with 70 ns access time, 2.7–3.6 V supply range, and industrial temperature support (–40°C to +85°C), packaged in Pb-free 28-pin narrow SOIC. It delivers TTL-compatible I/O, automatic CE-controlled power-down (<5 µA standby), and tri-state outputs for embedded memory expansion in microcontroller-based systems.
For engineers reviewing the CY62256VLL-70ZRXIT datasheet, CY62256VLL-70ZRXIT pinout, CY62256VLL-70ZRXIT application, or CY62256VLL-70ZRXIT equivalent, key selection criteria include guaranteed 70 ns read cycle timing, low-voltage operation down to 2.7 V, industrial-grade thermal performance, and compatibility with legacy SRAM bus interfaces requiring CE/OE/WE control logic.
Technical Context
The CY62256VLL-70ZRXIT implements a fully static 32K × 8 memory array with asynchronous parallel interface, using dual-level decoding (row/column) and sense amplifiers for deterministic access. Its CE/OE/WE control scheme enables seamless integration into 8-bit data buses without external latching.
It features automatic power-down when CE is HIGH, reducing ICC to ≤5 µA (ISB2 typ.) at 3.6 V, and supports data retention down to 1.4 V VCC. Input/output pins are TTL-compatible with VIH = 2.2 V min and VOL = 0.4 V max at IOL = 2.1 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 256 Kbit (32,768 × 8 bits); supports byte-wide addressing for 8-bit MCU systems. |
| Access Time | 70 ns max (tAA, tRC); ensures compatibility with 14 MHz bus clocks in legacy controllers. |
| Supply Voltage | 2.7 V to 3.6 V; enables direct interfacing with 3.3 V logic without level shifters. |
| Standby Current | ≤5 µA (ISB2 typ. at 3.6 V); critical for battery-backed or low-power sleep modes. |
| Operating Temp | –40°C to +85°C; qualified for industrial environments including factory automation and motor drives. |
| Output Drive | IOL = 2.1 mA / IOH = –1.0 mA; sufficient to drive standard TTL loads without buffers. |
| Data Retention VCC | 1.4 V min; allows extended hold time during brown-out or backup battery operation. |
Pinout & Package
Package: 28-pin narrow SOIC (0.300" wide), RoHS-compliant, Pb-free (ZRXIT suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address Inputs | 15-bit address bus (32K locations); compatible with Z80, 8051, and ARM7 address mapping. |
| I/O0–I/O7 | Bidirectional Data Bus | Tri-state enabled by OE/CE; shares pins for read/write-reduces PCB trace count. |
| CE | Chip Enable (active LOW) | Primary chip select; enables automatic power-down when deasserted (HIGH). |
| OE | Output Enable (active LOW) | Controls output driver state; HIGH places I/Os in high-impedance for bus sharing. |
| WE | Write Enable (active LOW) | Directly controls write latch; no internal clock required-fully asynchronous operation. |
| VCC | Power Supply | 2.7–3.6 V core supply; decoupling capacitor required per JEDEC guidelines. |
| GND | Ground Reference | Signal and power return; must be connected to system ground plane for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| 70 ns access time | Guaranteed timing across full voltage/temperature range-enables drop-in replacement for older 70 ns SRAMs. |
| Automatic CE power-down | Reduces ICC to ≤5 µA without external control logic-simplifies low-power system design. |
| TTL-compatible I/O | VIH/VIL thresholds match legacy 5 V systems; allows mixed-voltage board designs with 3.3 V core. |
| Tri-state outputs | Enables multi-drop bus architecture with shared data lines-eliminates need for external bus transceivers. |
| Industrial temp range | Validated operation from –40°C to +85°C-supports deployment in uncontrolled ambient enclosures. |
Applications
| Industrial PLC Memory Buffer | Medical Device Data Logging |
|---|---|
|
Use Scenario: Storing real-time sensor readings and configuration parameters in programmable logic controllers with limited board space. IC Role / Device Role / Timing Role: Byte-accessible nonvolatile-adjacent buffer; provides deterministic 70 ns read/write for cyclic data capture. Use Value: Low standby current (≤5 µA) extends runtime during mains failure; 2.7–3.6 V range matches isolated DC-DC output rails. |
Use Scenario: Capturing ECG waveform snapshots in portable diagnostic equipment requiring reliable short-term storage. IC Role / Device Role / Timing Role: Asynchronous SRAM interface to ADC controller; handles burst writes without wait states. Use Value: Tri-state I/O allows shared bus with display controller; industrial temp rating ensures stability inside sealed enclosures. |
| Automotive Body Control Module | Legacy Industrial HMI Controller |
|
Use Scenario: Holding CAN message buffers and calibration tables in body electronics modules operating near engine bays. IC Role / Device Role / Timing Role: External memory extension for 8-bit MCUs; supports CE/OE/WE handshaking per SAE J1850 timing constraints. Use Value: Validated –40°C to +85°C operation meets AEC-Q100 Grade 2 requirements; Pb-free package complies with automotive RoHS. |
Use Scenario: Replacing obsolete 28-pin SRAMs in aging human-machine interface panels running DOS-based firmware. IC Role / Device Role / Timing Role: Pin- and timing-compatible upgrade for CY62256N-70PC; retains identical address/data/control pinout. Use Value: 70 ns tAA matches original spec; narrow SOIC fits existing footprint-no PCB redesign needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISSI IS62C256AL-70QLI | Same 32K × 8 organization, 70 ns speed, but 4.5–5.5 V supply only; no 3.3 V support. | Requires level-shifting for 3.3 V systems; unsuitable for mixed-voltage or low-power designs. | Select only if legacy 5 V bus architecture is fixed and no voltage scaling is planned. |
| ON Semiconductor MCM62C256CJ-70 | 70 ns access, 4.5–5.5 V supply, larger 28-pin DIP package; higher ICC (25 mA typ.) and ISB (100 µA typ.). | Larger footprint and higher power prevent use in space-constrained or battery-powered devices. | Consider only for through-hole prototyping or repair of vintage 5 V systems where SOIC is not feasible. |
Compared with IS62C256AL-70QLI and MCM62C256CJ-70, the CY62256VLL-70ZRXIT uniquely supports 2.7–3.6 V operation with sub-5 µA standby, making it the sole choice for modern low-voltage industrial and automotive embedded memory expansion.
Availability
CY62256VLL-70ZRXIT is available at Aetrix Electronics and suitable for industrial PLC memory buffers, medical device data logging, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY62256VLL-70ZRXIT 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) designs high-reliability memory and programmable solutions for industrial, automotive, and communications markets, with headquarters in San Jose, CA.
The CY62256V series targets cost-sensitive, space-constrained embedded systems needing fast, low-power parallel SRAM-especially where legacy pin compatibility and industrial temperature compliance are mandatory.
FAQ
Is CY62256VLL-70ZRXIT pin-compatible with CY62256N-70PC?
Yes-both use identical 28-pin narrow SOIC pinout with matching A0–A14, I/O0–I/O7, CE, OE, WE, VCC, and GND assignments. The ZRXIT variant adds Pb-free construction and industrial temperature qualification, while maintaining full electrical and timing compatibility with the legacy -70PC version.
What is the minimum VCC required to retain data during power loss?
Data retention is guaranteed down to 1.4 V VCC (VDR), with retention current ICCDR ≤3 µA (typ.) at 1.4 V and 25°C. This enables use with supercapacitor or coin-cell backup circuits that decay below 2.7 V but remain above 1.4 V for extended hold periods.
Does CY62256VLL-70ZRXIT require external pull-up resistors on control lines?
No-CE, OE, and WE inputs have TTL-compatible thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V) and do not require external pull-ups when driven directly by 3.3 V CMOS or TTL outputs. Internal input leakage is ±1 µA, so clean logic-level signals suffice without added components.
Can this SRAM operate reliably at 85°C ambient with 3.6 V supply?
Yes-the device is fully characterized and guaranteed over –40°C to +85°C at 3.6 V, with all AC/DC parameters (including 70 ns tAA and ≤5 µA ISB2) meeting specification. Thermal resistance ΘJA = 68.45°C/W (SOIC) ensures junction temperature remains within safe limits under typical PCB layouts.
CY62256VLL-70ZRXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- MOBL™
- Package/Case:
- 28-TSSOP (0.465", 11.80mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 256Kbit
- Memory Organization:
- 32K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 70ns
- Access Time:
- 70 ns
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSOP I
CY62256VLL-70ZRXIT FAQ
1.How can I place an order for CY62256VLL-70ZRXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY62256VLL-70ZRXIT 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 CY62256VLL-70ZRXIT reliable?
The price and inventory of CY62256VLL-70ZRXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY62256VLL-70ZRXIT is usually 5 days.
3.What payment methods are accepted for CY62256VLL-70ZRXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY62256VLL-70ZRXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY62256VLL-70ZRXIT?
CY62256VLL-70ZRXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY62256VLL-70ZRXIT 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 CY62256VLL-70ZRXIT?
For technical support, including CY62256VLL-70ZRXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY62256VLL-70ZRXIT requirements.
6.How does Aetrix verify that CY62256VLL-70ZRXIT is sourced from the original manufacturer or authorized distributors?
All CY62256VLL-70ZRXIT 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 CY62256VLL-70ZRXIT meets industry standards.
7.What is the process for return or replacement of CY62256VLL-70ZRXIT?
All CY62256VLL-70ZRXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY62256VLL-70ZRXIT, 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 CY62256VLL-70ZRXIT part is unused and in its original packaging.
Return procedure for CY62256VLL-70ZRXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY62256VLL-70ZRXIT 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
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
