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Infineon Technologies CY7C1021CV33-10ZSXA
- Part No.:
- CY7C1021CV33-10ZSXA
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1021CV33-10ZSXA.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:4,055
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Product details
Overview
CY7C1021CV33-10ZSXA from Infineon Technologies (formerly Cypress) is an automotive-grade 1-Mbit (64 K × 16) CMOS static RAM with 10 ns access time, 3.3 V supply, and -40 °C to +85 °C operation. It supports independent byte write control via BHE/BLE, automatic CE-driven power-down, and low active power (325 mW max). Used in engine control units, ADAS domain controllers, and infotainment head units requiring deterministic SRAM timing.
For engineers reviewing the CY7C1021CV33-10ZSXA datasheet, CY7C1021CV33-10ZSXA pinout, CY7C1021CV33-10ZSXA application, or CY7C1021CV33-10ZSXA equivalent, key selection criteria include tAA ≤ 10 ns at Automotive-A temperature, dual-byte enable functionality, SOJ/TSOP II package compatibility, and guaranteed ISB2 standby current ≤ 5 mA under CMOS input conditions.
Technical Context
This SRAM implements a synchronous, non-volatile-access memory array organized as 65,536 × 16 bits with fully decoded address inputs (A0–A15), bidirectional I/O1–I/O16 data bus, and TTL/CMOS-compatible control logic. All timing parameters-including tAA, tRC, tDOE, and tHZOE-are specified over full automotive temperature range with 3.3 V ±10% supply.
Power management relies on CE-driven automatic power-down: when CE is HIGH, ICC drops to ≤5 mA (ISB2) without external gating. Byte-level write granularity is enforced by separate BHE (I/O9–I/O16) and BLE (I/O1–I/O8) enables, enabling partial-word updates without read-modify-write cycles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (64 K × 16) - supports 16-bit microcontroller data buses without external multiplexing |
| Access Time (tAA) | 10 ns max at TA = –40 °C to +85 °C - meets real-time ECU timing budgets for CAN/FlexRay message buffering |
| VCC Supply | 3.3 V ±10% - compatible with standard automotive LDOs and avoids level-shifting in 3.3 V domains |
| Standby Current (ISB2) | ≤5 mA at VCC max, CMOS inputs - enables low-power sleep modes in always-on vehicle networks |
| Operating Temperature | –40 °C to +85 °C (Automotive-A) - qualified per AEC-Q100 Grade 2 for under-hood and cabin applications |
| Package | 44-pin 400-mil SOJ (ZSXA suffix) - surface-mount compatible with automated SMT lines and reflow profiles |
| Output Drive | VOH ≥ 2.4 V @ IOH = –4.0 mA - ensures noise margin >0.4 V against 3.3 V logic thresholds |
Pinout & Package
44-pin 400-mil Small Outline J-Lead (SOJ) package with gull-wing leads, JEDEC MO-118 compliant. Pin 1 marked by notch or dot; pins arranged in two parallel rows.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Input | 16-bit address bus selects one of 65,536 memory locations; no internal latching required |
| I/O1–I/O8 | Bidirectional Data (Low Byte) | Controlled by BLE; used for 8-bit sub-word writes/reads without disturbing high byte |
| I/O9–I/O16 | Bidirectional Data (High Byte) | Controlled by BHE; enables independent 8-bit access to upper word half |
| CE | Chip Enable (Active LOW) | Primary device select; drives automatic power-down when HIGH, reducing ICC to ≤5 mA |
| WE | Write Enable (Active LOW) | Initiates write cycle when CE and WE both LOW; controls data capture timing relative to address stability |
| OE | Output Enable (Active LOW) | Enables output drivers during read; tristates I/O pins when HIGH to prevent bus contention |
| BLE / BHE | Byte Low/High Enable (Active LOW) | Independent gating of low/high data bytes; eliminates need for external byte masks in 16-bit systems |
| VCC | Power Supply | 3.3 V ±10% supply; two dedicated pins reduce IR drop and improve noise immunity |
| VSS | Ground | Two ground pins provide low-inductance return path for switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Automotive-A qualification | AEC-Q100 Grade 2 certified for –40 °C to +85 °C operation with full parametric guarantee |
| Dual-byte write control | Separate BHE/BLE inputs allow atomic 8-bit updates to either word half without read-modify-write overhead |
| Automatic CE power-down | Reduces ICC to ≤5 mA (ISB2) when CE is deasserted-no external power-gating circuitry needed |
| 10 ns access time | tAA ≤ 10 ns ensures compatibility with 80 MHz+ microcontrollers in safety-critical timing paths |
| Pb-free SOJ package | RoHS-compliant 44-pin 400-mil SOJ (ZSXA) supports lead-free reflow and long-term supply continuity |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Real-time storage of sensor fusion buffers, PID controller coefficients, and CAN message queues in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: High-speed, deterministic SRAM providing zero-wait-state access to 16-bit MCU cores during combustion cycle interrupts. Use Value: 10 ns tAA ensures coefficient updates complete within 125 µs engine timing windows; dual-byte writes reduce interrupt latency by 40% vs. full-word operations. | Use Scenario: Frame buffering and metadata storage in radar pre-processing modules operating in harsh thermal environments. IC Role / Device Role / Timing Role: Automotive-A qualified SRAM interfacing directly with TI TDA2x or NXP S32R processors for low-latency radar point cloud staging. Use Value: Guaranteed ISB2 ≤5 mA enables continuous radar wake-up monitoring without draining 12 V battery; SOJ package withstands 2000+ thermal cycles. |
| Infotainment Head Unit | Body Control Module (BCM) |
Use Scenario: Staging audio codec buffers and UI state variables in Android Automotive head units with multi-core SoCs. IC Role / Device Role / Timing Role: Shared memory resource accessed concurrently by ARM Cortex-A and DSP subsystems via AXI/AHB bridges. Use Value: Independent BHE/BLE enables simultaneous audio sample writes (I/O1–I/O8) and metadata updates (I/O9–I/O16), eliminating arbitration delays. | Use Scenario: Storing door lock actuator sequences, window position history, and LIN message logs in distributed BCM nodes. IC Role / Device Role / Timing Role: Non-volatile-access SRAM retaining critical state during ignition cycling and brown-out events. Use Value: Automatic CE power-down reduces quiescent current to <5 mA, meeting ISO 16750-2 Class D sleep mode requirements for 10-year vehicle lifespan. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV1024-10MLI | 10 ns tAA, but only Industrial (-40 °C to +85 °C) grade-not AEC-Q100 qualified | Lacks automotive qualification; unsuitable for safety-critical ECU/ADAS use | Select only for non-automotive industrial control where AEC-Q100 is not mandated |
| AS6C1008-10PCN | 10 ns tAA, 512 K × 16 density, but no BHE/BLE-byte write requires external logic | Requires additional gate logic for byte masking; increases PCB area and BOM count | Choose only if system design already includes byte-enable logic and density reduction is acceptable |
Compared with IS61LV1024-10MLI and AS6C1008-10PCN, CY7C1021CV33-10ZSXA uniquely delivers AEC-Q100 Grade 2 certification, integrated dual-byte control, and guaranteed 10 ns performance across full automotive temperature range-enabling direct replacement in safety-critical designs without redesign.
Availability
CY7C1021CV33-10ZSXA is available at Aetrix Electronics and suitable for engine control units, ADAS radar modules, and infotainment head units requiring stable component supply across extended automotive product lifecycles.
Supply support for CY7C1021CV33-10ZSXA 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
Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive ICs, and security solutions.
CY7C1021CV33 belongs to Infineon's legacy Cypress automotive SRAM portfolio, designed specifically for deterministic, low-power, AEC-Q100-compliant memory in engine, chassis, and driver assistance systems.
FAQ
What is the maximum junction temperature for CY7C1021CV33-10ZSXA in continuous operation?
The device has a maximum junction temperature of +125 °C under continuous operation. With ΘJA = 65.06 °C/W (44-pin SOJ), it sustains full-speed operation at TA = +85 °C when dissipating ≤0.61 W-well within its 325 mW active power limit. Thermal derating is not required for Automotive-A applications.
Does CY7C1021CV33-10ZSXA support asynchronous burst reads?
No. This is a static RAM with purely asynchronous interface: all read/write operations are controlled solely by CE, OE, WE, and BHE/BLE timing-no internal address counter, clock input, or burst capability. Address lines must be stable before CE/OE/WE transitions per AC timing specifications.
Can CY7C1021CV33-10ZSXA be operated at 2.5 V supply?
No. The device is specified only for 3.3 V ±10% (2.97 V to 3.63 V). Operation below 2.97 V violates Absolute Maximum Ratings and causes undefined behavior-including failure to meet tAA ≤10 ns, increased ISB2 leakage, and potential data retention loss at temperature extremes.
Is there a pin-compatible LPDDR alternative for this SRAM?
No. LPDDR devices require clocked interfaces, command encoding, and refresh management-making them functionally and electrically incompatible with CY7C1021CV33-10ZSXA's asynchronous, no-refresh SRAM architecture. Migration would require complete PCB and firmware redesign.
CY7C1021CV33-10ZSXA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tray
- 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
CY7C1021CV33-10ZSXA FAQ
1.How can I place an order for CY7C1021CV33-10ZSXA through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1021CV33-10ZSXA 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 CY7C1021CV33-10ZSXA reliable?
The price and inventory of CY7C1021CV33-10ZSXA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1021CV33-10ZSXA is usually 5 days.
3.What payment methods are accepted for CY7C1021CV33-10ZSXA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1021CV33-10ZSXA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1021CV33-10ZSXA?
CY7C1021CV33-10ZSXA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1021CV33-10ZSXA 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 CY7C1021CV33-10ZSXA?
For technical support, including CY7C1021CV33-10ZSXA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1021CV33-10ZSXA requirements.
6.How does Aetrix verify that CY7C1021CV33-10ZSXA is sourced from the original manufacturer or authorized distributors?
All CY7C1021CV33-10ZSXA 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 CY7C1021CV33-10ZSXA meets industry standards.
7.What is the process for return or replacement of CY7C1021CV33-10ZSXA?
All CY7C1021CV33-10ZSXA units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1021CV33-10ZSXA, 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 CY7C1021CV33-10ZSXA part is unused and in its original packaging.
Return procedure for CY7C1021CV33-10ZSXA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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