My Inquiry
My Account
Infineon Technologies CY62256VNLL-70ZXI
- Part No.:
- CY62256VNLL-70ZXI
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 28-TSSOP (0.465", 11.80mm Width)
- Datasheet:
-
CY62256VNLL-70ZXI.pdf
- Description:
- IC SRAM 256KBIT PAR 28TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:2,412
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY62256VNLL-70ZXI from Cypress Semiconductor is a 256-Kbit (32 K × 8) CMOS static RAM with 70 ns access time, operating across 2.7 V–3.6 V supply, and rated for industrial temperature range (–40 °C to +85 °C). It features TTL-compatible I/O, automatic CE-controlled power-down (<0.1 µA standby), and tristate bidirectional data bus (I/O0–I/O7) for embedded memory expansion in microcontroller-based systems.
For engineers reviewing the CY62256VNLL-70ZXI datasheet, CY62256VNLL-70ZXI pinout, CY62256VNLL-70ZXI application, or CY62256VNLL-70ZXI equivalent, key selection criteria include its 28-pin narrow SOIC package, low-voltage operation, guaranteed 70 ns read/write timing, and compatibility with legacy 32K×8 SRAM designs requiring industrial-grade reliability.
Technical Context
The CY62256VNLL-70ZXI implements a fully static 32K × 8 memory array using CMOS technology, with independent active-low chip enable (CE), output enable (OE), and write enable (WE) controls. Its architecture supports seamless memory expansion via CE daisy-chaining and eliminates external wait-state logic due to deterministic 70 ns tAA and tRC timing.
All address (A0–A14) and data (I/O0–I/O7) lines are TTL-compatible with VIH ≥ 2.2 V and VOL ≤ 0.4 V at 2.7 V supply. The device enters automatic power-down mode when CE is HIGH, reducing ICC to ≤0.1 µA (ISB2) while retaining data down to 1.4 V VCC - critical for battery-backed retention in industrial controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory size | 256 Kbit (32 K × 8) - provides byte-wide addressing for 8-bit microcontrollers without data bus multiplexing |
| Access time | 70 ns - guarantees full-speed operation with 14.3 MHz bus clocks and no wait states |
| VCC range | 2.7 V to 3.6 V - compatible with 3.3 V systems and tolerant of brown-out conditions down to 2.7 V |
| Standby current | 0.1 µA (ISB2, industrial temp) - enables multi-year battery backup in nonvolatile storage applications |
| Data retention voltage | 1.4 V minimum - ensures reliable data hold during deep sleep or power-fail scenarios |
| Operating temperature | –40 °C to +85 °C - qualified for industrial control, motor drives, and factory automation environments |
| Package | 28-pin narrow SOIC (300-mil) - surface-mount compatible with standard reflow profiles and IPC-7351B land patterns |
Pinout & Package
Package: 28-pin narrow SOIC (300-mil), RoHS-compliant, body width 7.62 mm, lead pitch 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address inputs | 15-bit address bus supporting full 32K-word decoding; no external address latching required |
| I/O0–I/O7 | Bidirectional data bus | Tristate-enabled I/O lines; direction controlled by OE/WE state - eliminates need for external transceivers |
| CE | Chip enable (active LOW) | Primary chip select; enables automatic power-down when HIGH - reduces system idle power by >99% |
| OE | Output enable (active LOW) | Controls I/O pin direction: LOW = outputs enabled; HIGH = high-impedance input mode |
| WE | Write enable (active LOW) | Determines operation mode: LOW = write cycle; HIGH = read cycle - supports asynchronous bus protocols |
| VCC | Power supply | Single 2.7–3.6 V supply - eliminates need for level shifters in 3.3 V domains |
| GND | Ground reference | Common return path for all signals and power - decoupling capacitor placement critical near Pin 14 |
Key Features
| Feature | Design Value |
|---|---|
| Automatic CE power-down | Reduces standby current to 0.1 µA at +85 °C - extends battery life in always-on monitoring nodes |
| TTL-compatible I/O | VIH ≥ 2.2 V and VOL ≤ 0.4 V at 2.7 V - interoperable with legacy 5 V logic via pull-up resistors or direct interface to 3.3 V MCUs |
| 70 ns read/write timing | tAA = 70 ns, tWC = 70 ns - matches timing budgets of ARM7, PIC18, and MSP430 microcontrollers without glue logic |
| Low-voltage data retention | Operates down to 1.4 V VCC - supports fail-safe data preservation during brown-out or backup battery switchover |
| 28-pin SOIC packaging | Standard footprint compatible with automated SMT assembly and legacy PCB layouts - no redesign needed for drop-in replacement |
Applications
| Industrial PLC Memory Buffer | Medical Device Data Logger |
|---|---|
|
Use Scenario: Stores real-time sensor readings and configuration parameters in programmable logic controllers during cyclic scan execution. IC Role / Device Role / Timing Role: Byte-accessible SRAM buffer interfaced directly to ARM Cortex-M3/M4 buses with no wait states. Use Value: 70 ns access time ensures deterministic response within 10 ms scan cycles; 0.1 µA ISB2 enables extended runtime during mains failure. |
Use Scenario: Captures ECG waveforms and patient metadata in portable diagnostic equipment with intermittent power. IC Role / Device Role / Timing Role: Nonvolatile shadow RAM holding critical data during battery switchover and firmware updates. Use Value: 1.4 V data retention threshold preserves integrity during 200 ms power gap; industrial temp rating supports clinic/hospital deployment. |
| Automotive Body Control Module | Test & Measurement Equipment FIFO |
|
Use Scenario: Holds door lock status, lighting sequences, and fault codes in AEC-Q100 Grade 2 compliant BCMs. IC Role / Device Role / Timing Role: Industrial-temp SRAM used as configuration scratchpad and event history buffer. Use Value: –40 °C to +85 °C qualification meets automotive under-hood requirements; CE power-down minimizes quiescent draw in sleep mode. |
Use Scenario: Implements acquisition buffer in digital oscilloscopes and logic analyzers sampling at 10+ MS/s. IC Role / Device Role / Timing Role: High-speed parallel memory staging raw ADC samples before DMA transfer to host processor. Use Value: 70 ns tAA enables sustained 14.3 MB/s throughput; tristate I/O simplifies bus arbitration with FPGA controller. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISSI IS62WV2568BLL-70NLI | Same 256K×8 organization, 70 ns speed, but uses 2.5 V–3.6 V VCC range and has higher ISB2 (1 µA @ +85 °C) | Valid for commercial/industrial use but lacks AEC-Q100 automotive qualification | Select when lower cost and broad distributor availability outweigh marginal standby current increase |
| ON Semiconductor NVSRAM NB3L553MNR4G | Integrated EEPROM backup; 3.3 V only; slower 100 ns access; higher ICC (25 mA active) | Provides true nonvolatility without external battery - suited for infrequent-write, long-retention use cases | Choose only if data persistence through unlimited power cycles is mandatory and 30 ns timing penalty is acceptable |
Compared with IS62WV2568BLL-70NLI and NB3L553MNR4G, CY62256VNLL-70ZXI delivers superior industrial-temp standby efficiency (0.1 µA vs. 1 µA/25 mA), tighter 70 ns timing consistency, and broader voltage flexibility - making it optimal for battery-sensitive, timing-critical embedded controllers.
Availability
CY62256VNLL-70ZXI is available at Aetrix Electronics and suitable for industrial PLCs, medical data loggers, and automotive body control modules requiring stable component supply, long-lifecycle support, and guaranteed industrial temperature performance.
Supply support for CY62256VNLL-70ZXI 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 fabless semiconductor company specializing in embedded systems solutions, including microcontrollers, memory, and connectivity ICs.
The CY62256VN series was designed specifically for cost-sensitive, low-power embedded systems needing reliable, pin-compatible SRAM upgrades - targeting industrial automation, medical instrumentation, and automotive subsystems.
FAQ
Is CY62256VNLL-70ZXI compatible with 5 V logic interfaces?
No - it is strictly a 2.7–3.6 V device with TTL-compatible thresholds (VIH ≥ 2.2 V), but not 5 V tolerant. Direct connection to 5 V buses risks damage. Use level translators or ensure host MCU operates at 3.3 V with appropriate drive strength.
What is the maximum clock frequency supported for burst reads?
The device does not use a clock; it is asynchronous. With 70 ns tRC and tAA, it supports sustained random-access throughput up to ~14.3 million words per second - sufficient for ARM7/9 and Cortex-M3/M4 buses running at ≤14 MHz without wait states.
Does CY62256VNLL-70ZXI require an external backup battery for data retention?
No - it retains data down to 1.4 V VCC without external battery. However, for extended zero-power retention (>1 hour), a backup source (e.g., supercapacitor) is recommended to maintain VCC above 1.4 V during outages.
Can CE, OE, and WE be tied together for simplified control?
No - tying CE and OE together disables tristate control and prevents proper read/write separation. CE must be controlled independently to enable automatic power-down; OE must be toggled separately to manage I/O direction and bus sharing.
CY62256VNLL-70ZXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- MOBL™
- Package/Case:
- 28-TSSOP (0.465", 11.80mm Width)
- Packaging:
- Tray
- 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
CY62256VNLL-70ZXI FAQ
1.How can I place an order for CY62256VNLL-70ZXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY62256VNLL-70ZXI 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 CY62256VNLL-70ZXI reliable?
The price and inventory of CY62256VNLL-70ZXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY62256VNLL-70ZXI is usually 5 days.
3.What payment methods are accepted for CY62256VNLL-70ZXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY62256VNLL-70ZXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY62256VNLL-70ZXI?
CY62256VNLL-70ZXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY62256VNLL-70ZXI 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 CY62256VNLL-70ZXI?
For technical support, including CY62256VNLL-70ZXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY62256VNLL-70ZXI requirements.
6.How does Aetrix verify that CY62256VNLL-70ZXI is sourced from the original manufacturer or authorized distributors?
All CY62256VNLL-70ZXI 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 CY62256VNLL-70ZXI meets industry standards.
7.What is the process for return or replacement of CY62256VNLL-70ZXI?
All CY62256VNLL-70ZXI units undergo pre-shipment inspection (PSI). If there is an issue with CY62256VNLL-70ZXI, 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 CY62256VNLL-70ZXI part is unused and in its original packaging.
Return procedure for CY62256VNLL-70ZXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY62256VNLL-70ZXI 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
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.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
