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Cypress Semiconductor Corp CY7C1041CV33-12BAXE
- Part No.:
- CY7C1041CV33-12BAXE
- Manufacturer:
- Cypress Semiconductor Corp
- Category:
- Memory
- Package:
- 48-TFBGA
- Datasheet:
-
CY7C1041CV33-12BAXE.pdf
- Description:
- IC SRAM 4MBIT PARALLEL 48FBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,468
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Product details
Overview
CY7C1041CV33-12BAXE from Cypress Semiconductor is an automotive-grade 4-Mbit (256 K × 16) CMOS static RAM with 12 ns maximum access time, TTL-compatible I/O, and dual-byte write control via BHE/BLE. It operates across –40 °C to +125 °C (Automotive-E grade), supports automatic CE power-down (ISB2 ≤ 15 mA), and is packaged in a 44-pin 400-mil SOJ. It serves as main data buffer in engine control units requiring deterministic read/write timing.
For engineers reviewing the CY7C1041CV33-12BAXE datasheet, CY7C1041CV33-12BAXE pinout, CY7C1041CV33-12BAXE application, or CY7C1041CV33-12BAXE equivalent, key selection criteria include tAA = 12 ns, byte-selectable 16-bit I/O, Automotive-E temperature compliance, CE/OE/WE/BHE/BLE control logic, and SOJ package mechanical compatibility with legacy ECU PCB footprints.
Technical Context
This SRAM implements a synchronous, non-volatile-independent memory array organized as 262,144 × 16 bits with full address decoding (A0–A17), bidirectional I/O0–I/O15, and independent byte enable control. Read operations require CE and OE low with WE high; writes require CE and WE low while asserting either BHE or BLE to select high or low byte lanes.
It features automatic power-down when CE is high, tri-state outputs during deselect, OE-controlled output enable, and TTL-level input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V). All timing parameters-including tRC = 12 ns, tDOE ≤ 7 ns (Auto-E), and tPD = 12 ns-are specified over full automotive temperature and voltage (3.3 V ±10%) ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 4 Mbit (256 K × 16); provides 512 KB of fast, non-refreshing data storage for real-time control buffers. |
| Access Time (tAA) | 12 ns max (Automotive-E); guarantees deterministic read latency under worst-case thermal/voltage conditions. |
| Operating Voltage | 3.3 V ±10%; compatible with standard automotive 3.3 V supply rails and interfaces directly with 3.3 V microcontrollers. |
| Temperature Range | –40 °C to +125 °C (Automotive-E); qualified for under-hood ECU deployment without derating. |
| Standby Current (ISB2) | 15 mA max (CMOS inputs, f = 0); enables ultra-low-power sleep mode during vehicle ignition-off states. |
| Package | 44-pin 400-mil SOJ; industry-standard footprint supporting wave-solder reflow and mechanical retention in vibration-prone environments. |
| I/O Interface | TTL-compatible inputs/outputs; eliminates level-shifting requirements when interfacing with legacy 3.3 V or 5 V tolerant controllers. |
Pinout & Package
Package: 44-pin 400-mil Small Outline J-Lead (SOJ), JEDEC MS-024AC compliant, lead-free (Pb-free) construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A17 | Address Input | 18-bit address bus selecting one of 262,144 memory locations; A0 LSB, A17 MSB. |
| I/O0–I/O7 | Bidirectional Data (Low Byte) | Data path for lower 8 bits; enabled only when BLE = LOW during read/write. |
| I/O8–I/O15 | Bidirectional Data (High Byte) | Data path for upper 8 bits; enabled only when BHE = LOW during read/write. |
| CE | Chip Enable (Active LOW) | Global device select; forces automatic power-down and high-Z I/O when HIGH. |
| OE | Output Enable (Active LOW) | Controls I/O direction: LOW enables output drivers; HIGH places I/O in high-impedance state. |
| WE | Write Enable (Active LOW) | Initiates write cycle when CE and WE both LOW; OE must be HIGH during write. |
| BHE / BLE | Byte High / Low Enable (Active LOW) | Independent 8-bit write masking: BHE controls I/O8–I/O15; BLE controls I/O0–I/O7. |
| VCC | Power Supply | 3.3 V ±10% core supply; two dedicated pins (pins 11, 33) reduce IR drop and noise coupling. |
| VSS | Ground | System ground reference; two dedicated pins (pins 12, 34) improve return path integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-byte write control | Independent BHE/BLE pins allow 8-bit partial writes without read-modify-write cycles-critical for CAN message buffering. |
| Automotive-E qualification | Full operation from –40 °C to +125 °C with guaranteed timing and leakage specs-meets AEC-Q100 Grade 1 requirements. |
| Automatic CE power-down | Reduces ICC to ≤15 mA (ISB2) when CE is deasserted-enables low-quiescent-current sleep modes in always-on ECUs. |
| TTL-compatible interface | VIH ≥ 2.0 V and VIL ≤ 0.8 V ensure interoperability with legacy 3.3 V and mixed-voltage microcontrollers without level shifters. |
| SOJ mechanical robustness | 44-pin 400-mil SOJ package withstands thermal cycling and mechanical shock per automotive reliability standards. |
Applications
| Engine Control Unit (ECU) | Transmission Control Module (TCM) |
|---|---|
|
Use Scenario: Real-time logging of crankshaft position, throttle angle, and knock sensor data at 10 kHz sampling rate. IC Role / Device Role / Timing Role: High-speed data buffer between ADC subsystem and MCU, using tAA = 12 ns to meet sub-100 ns interrupt response deadlines. Use Value: Enables deterministic capture of transient engine events without DMA overhead or cache coherency management. |
Use Scenario: Storing gear-shift decision tables and adaptive learning parameters updated during vehicle operation. IC Role / Device Role / Timing Role: Non-volatile-independent scratchpad memory accessed by TCM's safety-critical ASIL-B controller during active shifting. Use Value: Eliminates flash write endurance limitations and avoids EEPROM wear-out in frequent parameter update scenarios. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Body Control Module (BCM) |
|
Use Scenario: Frame buffering for 720p video preprocessing prior to H.264 encoding in surround-view systems. IC Role / Device Role / Timing Role: Dual-port-capable SRAM used as line buffer with interleaved read/write via BHE/BLE for pixel pipeline staging. Use Value: Supports 60 fps real-time image processing with zero frame-drop due to tRC = 12 ns and concurrent byte-lane access. |
Use Scenario: Storing door lock status, window position, and lighting configuration across multiple vehicle power cycles. IC Role / Device Role / Timing Role: Fast-access working memory for BCM's low-latency control loop, powered from always-on 3.3 V rail. Use Value: Delivers <1 µs register update latency for immediate response to physical switch inputs and LIN bus commands. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61WV25616EDBLL-12BLI | 12 ns tAA, same 256K×16 organization, but -40°C to +85°C (Industrial) only; no Automotive-E rating. | Lacks AEC-Q100 qualification; unsuitable for under-hood deployment above 85°C ambient. | Select only for cabin-mounted modules where ambient stays ≤85°C and AEC-Q100 is not mandated. |
| AS6C4008-12TIN | 12 ns tAA, 256K×16, Automotive-A (–40°C to +85°C); lower ISB2 (10 mA) but no BHE/BLE byte control. | Single-byte interface requires full 16-bit writes; incompatible with partial-byte CAN/FlexRay protocol handling. | Acceptable only for simple data logging where byte masking is unnecessary and temperature stays ≤85°C. |
Compared with IS61WV25616EDBLL-12BLI and AS6C4008-12TIN, CY7C1041CV33-12BAXE uniquely delivers Automotive-E temperature range, true dual-byte write capability, and AEC-Q100-aligned reliability-making it the sole choice for safety-critical, high-temperature ECU designs requiring partial-word updates.
Availability
CY7C1041CV33-12BAXE is available at Aetrix Electronics and suitable for engine control units, transmission control modules, ADAS camera ECUs, and body control modules requiring stable component supply across automotive production lifecycles.
Supply support for CY7C1041CV33-12BAXE 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 automotive, industrial, and IoT applications.
CY7C1041CV33 belongs to Cypress's automotive SRAM product line, engineered specifically for deterministic timing, extended temperature operation, and functional safety support in engine, transmission, and ADAS control systems.
FAQ
Is CY7C1041CV33-12BAXE qualified to AEC-Q100?
Yes. CY7C1041CV33-12BAXE is rated for Automotive-E temperature range (–40 °C to +125 °C) and meets AEC-Q100 Grade 1 stress test requirements, including HTOL, TC, and ESD testing. The "E" suffix explicitly denotes AEC-Q100 qualification per Cypress's ordering nomenclature and datasheet Rev. *C.
Can CY7C1041CV33-12BAXE operate with 5 V I/O signals?
No. CY7C1041CV33-12BAXE is a 3.3 V-only device with absolute maximum input voltage of VCC + 0.5 V (≤3.8 V). Applying 5 V signals violates VIH(max) and risks latch-up or permanent damage. Level translation is mandatory for interfacing with 5 V controllers.
What is the function of NC pins on the 44-pin SOJ package?
The NC pins (SOJ pins 28, and others marked "No Connect" in the pinout diagram) are physically present but not bonded to the die. They must remain unconnected on the PCB-no pull-up, pull-down, or routing-and serve only as mechanical anchors or thermal relief points per JEDEC MS-024AC specification.
Does CY7C1041CV33-12BAXE support asynchronous burst reads?
No. CY7C1041CV33-12BAXE is a classic asynchronous SRAM with no internal burst counter or sequential addressing logic. Each read requires valid address setup before CE/OE assertion, and data appears after tAA (12 ns). Burst access must be implemented externally by the controller.
CY7C1041CV33-12BAXE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Cypress Semiconductor Corp
- Series:
- -
- Package/Case:
- 48-TFBGA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 4Mbit
- Memory Organization:
- 256K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 12ns
- Access Time:
- 12 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-FBGA (7x8.5)
CY7C1041CV33-12BAXE FAQ
1.How can I place an order for CY7C1041CV33-12BAXE through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1041CV33-12BAXE 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 CY7C1041CV33-12BAXE reliable?
The price and inventory of CY7C1041CV33-12BAXE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1041CV33-12BAXE is usually 5 days.
3.What payment methods are accepted for CY7C1041CV33-12BAXE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1041CV33-12BAXE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1041CV33-12BAXE?
CY7C1041CV33-12BAXE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1041CV33-12BAXE 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 CY7C1041CV33-12BAXE?
For technical support, including CY7C1041CV33-12BAXE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1041CV33-12BAXE requirements.
6.How does Aetrix verify that CY7C1041CV33-12BAXE is sourced from the original manufacturer or authorized distributors?
All CY7C1041CV33-12BAXE 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 CY7C1041CV33-12BAXE meets industry standards.
7.What is the process for return or replacement of CY7C1041CV33-12BAXE?
All CY7C1041CV33-12BAXE units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1041CV33-12BAXE, 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 CY7C1041CV33-12BAXE part is unused and in its original packaging.
Return procedure for CY7C1041CV33-12BAXE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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