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Infineon Technologies CY7C1021CV33-10ZXIT
- Part No.:
- CY7C1021CV33-10ZXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1021CV33-10ZXIT.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:3,207
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Product details
Overview
CY7C1021CV33-10ZXIT from Cypress Semiconductor is a 1-Mbit (64K × 16) high-speed CMOS static RAM with 10 ns access time, 3.3 V supply, industrial temperature range (–40°C to +85°C), and automatic CE-controlled power-down mode. It supports independent byte write via BHE/BLE pins and is used in real-time industrial controllers requiring deterministic memory access without refresh overhead.
For engineers reviewing the CY7C1021CV33-10ZXIT datasheet, CY7C1021CV33-10ZXIT pinout, CY7C1021CV33-10ZXIT application, or CY7C1021CV33-10ZXIT equivalent, key selection criteria include tAA ≤ 10 ns, dual-byte enable control, CMOS-compatible 3.3 V I/O, low standby current (5 mA max), and SOJ/TSOP II package compatibility for legacy board upgrades.
Technical Context
The CY7C1021CV33-10ZXIT implements a synchronous, non-volatile-independent SRAM array with full address decoding (A0–A15), bidirectional 16-bit data bus (IO1–IO16), and TTL/CMOS-compatible control logic. Its read/write timing is governed by overlapping CE, WE, OE, BHE, and BLE signals - no internal clock required.
It features two independent byte-write paths: BLE enables IO1–IO8 writes while BHE enables IO9–IO16 writes, enabling efficient 8-bit peripheral interfacing. Power management relies on automatic CE-driven transition into ISB2 standby mode (5 mA max) when CE is deasserted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 16 (1,048,576 bits), enabling single-cycle 16-bit word access without banking |
| Access Time (tAA) | 10 ns max at VCC = 3.3 V ±10%, TA = –40°C to +85°C - guarantees deterministic latency in hard real-time systems |
| Supply Voltage | 3.3 V ±10% - compatible with modern low-voltage microcontroller buses and FPGA I/O banks |
| Standby Current (ISB2) | 5 mA max - enables ultra-low-power hold state during processor sleep without external power gating |
| Operating Temperature | –40°C to +85°C - qualified for industrial automation, motor drives, and outdoor embedded equipment |
| Input/Output Voltage Levels | VIH = 2.0 V min, VOL = 0.4 V max - ensures noise margin >0.4 V under worst-case loading |
| Package | 44-pin 400-mil SOJ (Z suffix) - pin-compatible with legacy CY7C1021BV33 designs and standard SOJ socket footprints |
Pinout & Package
Package: 44-pin 400-mil Small Outline J-Lead (SOJ), RoHS-compliant, body width 400 mil, lead pitch 0.05 inch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Input | 16-bit address bus selecting one of 65,536 memory locations; fully decoded internally |
| IO1–IO16 | Bidirectional Data I/O | 16-bit parallel data path; tri-stated when CE HIGH, OE HIGH, or during write (WE LOW) |
| CE | Chip Enable (Active LOW) | Primary chip select; initiates automatic power-down when HIGH, enabling system-level power gating |
| WE | Write Enable (Active LOW) | Controls write initiation; must be LOW with CE LOW and valid BHE/BLE to store data |
| OE | Output Enable (Active LOW) | Enables output drivers; HIGH forces IO pins into high-impedance state regardless of CE/WE state |
| BHE / BLE | Byte High/Low Enable (Active LOW) | Independent 8-bit write control: BHE → IO9–IO16, BLE → IO1–IO8 - eliminates need for external byte masking logic |
| VCC | Power Supply | 3.3 V ±10% main supply; two dedicated pins (pins 11 & 33) reduce IR drop and improve noise immunity |
| VSS | Ground | System ground reference; two dedicated pins (pins 12 & 34) enhance return path integrity |
Key Features
| Feature | Design Value |
|---|---|
| Dual-byte write control | Separate BHE/BLE inputs allow concurrent or independent 8-bit writes to upper/lower data bytes without glue logic |
| Automatic CE power-down | Reduces ICC to 5 mA max (ISB2) when CE is HIGH - eliminates need for external power sequencers in battery-backed systems |
| High-speed 10 ns access | tAA = 10 ns at industrial temperature ensures compatibility with 80 MHz bus clocks and tight interrupt response windows |
| CMOS-compatible I/O | VIH = 2.0 V min, VIL = 0.8 V max - interoperable with 3.3 V microcontrollers, FPGAs, and ASICs without level shifters |
| Pb-free SOJ packaging | 44-pin 400-mil SOJ (Z suffix) supports reflow soldering and meets RoHS Directive 2011/65/EU requirements |
Applications
| Industrial PLC Memory Buffer | Automotive Engine Control Unit (ECU) Data Log |
|---|---|
|
Use Scenario: Storing real-time sensor samples and control state variables in programmable logic controllers with deterministic scan cycles. IC Role / Device Role / Timing Role: Non-refreshing, low-latency scratchpad memory interfaced directly to ARM Cortex-M4 or Renesas RX65N MCU local bus. Use Value: 10 ns tAA enables sub-100 ns memory reads, meeting <125 µs I/O scan deadlines; automatic CE power-down cuts idle power by 95% vs. active mode. |
Use Scenario: Capturing transient engine parameters (RPM, knock, O2) during fault events in ISO 16750-2 compliant ECUs. IC Role / Device Role / Timing Role: High-reliability, temperature-hardened SRAM holding pre-fault snapshots before flash logging. Use Value: –40°C to +85°C rating ensures operation during cold cranking and under-hood thermal stress; dual-byte write allows timestamp + data capture in single cycle. |
| Medical Infusion Pump Controller | Avionics Display Frame Buffer |
|
Use Scenario: Holding calibrated dosage tables and real-time flow rate history in Class IIa infusion pumps per IEC 62304. IC Role / Device Role / Timing Role: Safety-critical volatile memory storing runtime configuration and audit logs, backed by supercapacitor hold-up. Use Value: 5 mA ISB2 standby current extends supercapacitor hold-up time to >120 seconds; SOJ package supports manual rework in regulated production environments. |
Use Scenario: Serving as dual-port frame buffer for HUD or cockpit display controllers requiring flicker-free updates. IC Role / Device Role / Timing Role: Single-port SRAM synchronized to display controller's pixel clock via precise OE/CE timing. Use Value: tHZOE = 5 ns and tLZOE = 0 ns ensure clean pixel data transitions; 16-bit bus matches RGB565 pixel packing for minimal bus cycles per frame. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV102416-10MLI | 10 ns tAA, same 64K × 16 organization, but uses 48-pin TSOP II (not SOJ); higher ISB2 (10 mA) | Requires PCB footprint redesign; better thermal performance (ΘJA = 72°C/W) but lacks SOJ drop-in capability | Select if board layout allows TSOP II and thermal margin is constrained over industrial range |
| CY7C1021DV33-10ZXC | Same pinout and timing, but automotive-A grade (–40°C to +85°C, AEC-Q100 Grade 2); identical SOJ package | Qualified for automotive safety-critical modules; same electrical behavior but extended reliability testing | Select for automotive programs requiring AEC-Q100 compliance without design change |
Compared with IS61LV102416-10MLI and CY7C1021DV33-10ZXC, the CY7C1021CV33-10ZXIT offers guaranteed SOJ drop-in replacement for legacy CY7C1021BV33 designs, lowest standby current (5 mA), and direct qualification for industrial temperature operation without automotive cost premium.
Availability
CY7C1021CV33-10ZXIT is available at Aetrix Electronics and suitable for industrial PLCs, automotive ECUs, medical infusion pumps, and avionics displays requiring stable component supply across extended product lifecycles.
Supply support for CY7C1021CV33-10ZXIT 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 aerospace applications.
The CY7C1021CV33 belongs to Cypress's legacy high-speed SRAM product line, engineered specifically for deterministic, low-power, pin-compatible upgrades of 3.3 V embedded systems requiring zero-refresh volatile memory.
FAQ
Is CY7C1021CV33-10ZXIT pin-compatible with CY7C1021BV33?
Yes - CY7C1021CV33-10ZXIT is functionally and pin-compatible with CY7C1021BV33, sharing identical 44-pin SOJ pinout, address/data/control signal mapping, and byte-enable architecture. No PCB redesign is needed for drop-in replacement, though voltage tolerance and timing specs differ slightly.
What is the maximum operating current during active read cycles?
The maximum ICC during active read is 90 mA at VCC = 3.63 V, TA = –40°C to +85°C, and f = 1/tRC (100 MHz). This value is specified in the Electrical Characteristics table under "ICC VCC Operating Supply Current" for the -10 speed grade.
Does this SRAM require an external clock signal?
No - CY7C1021CV33-10ZXIT is an asynchronous SRAM. All operations are controlled solely by edge-triggered control signals (CE, WE, OE, BHE, BLE); no clock input or timing reference is required for read or write cycles.
Can IO1–IO16 be used as separate 8-bit buses?
Yes - via independent assertion of BLE (enabling IO1–IO8) and BHE (enabling IO9–IO16), the device supports true 8-bit byte writes without external demultiplexing. Both enables can be asserted simultaneously for full 16-bit access or separately for partial-word updates.
CY7C1021CV33-10ZXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 1Mbit
- Memory Organization:
- 64K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 10ns
- Access Time:
- 10 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
CY7C1021CV33-10ZXIT FAQ
1.How can I place an order for CY7C1021CV33-10ZXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1021CV33-10ZXIT 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 CY7C1021CV33-10ZXIT reliable?
The price and inventory of CY7C1021CV33-10ZXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1021CV33-10ZXIT is usually 5 days.
3.What payment methods are accepted for CY7C1021CV33-10ZXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1021CV33-10ZXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1021CV33-10ZXIT?
CY7C1021CV33-10ZXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1021CV33-10ZXIT 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 CY7C1021CV33-10ZXIT?
For technical support, including CY7C1021CV33-10ZXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1021CV33-10ZXIT requirements.
6.How does Aetrix verify that CY7C1021CV33-10ZXIT is sourced from the original manufacturer or authorized distributors?
All CY7C1021CV33-10ZXIT 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 CY7C1021CV33-10ZXIT meets industry standards.
7.What is the process for return or replacement of CY7C1021CV33-10ZXIT?
All CY7C1021CV33-10ZXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1021CV33-10ZXIT, 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 CY7C1021CV33-10ZXIT part is unused and in its original packaging.
Return procedure for CY7C1021CV33-10ZXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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