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Infineon Technologies CY7C1021CV33-15ZXCT
- Part No.:
- CY7C1021CV33-15ZXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1021CV33-15ZXCT.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:4,209
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Product details
Overview
CY7C1021CV33-15ZXCT from Cypress Semiconductor is a 1-Mbit (64K × 16) high-speed CMOS static RAM with 15 ns maximum access time, 3.3 V supply, and automatic CE-controlled power-down mode. It supports independent byte-wide write control via BHE/BLE pins and operates across industrial temperature range (–40°C to +85°C) in a 44-pin TSOP II package. Used for real-time data buffering in industrial controllers and FPGA co-processor memory interfaces.
For engineers reviewing the CY7C1021CV33-15ZXCT datasheet, CY7C1021CV33-15ZXCT pinout, CY7C1021CV33-15ZXCT application, or CY7C1021CV33-15ZXCT equivalent, key selection criteria include tAA = 15 ns read timing, dual-byte enable architecture, CE/OE/WE control logic compatibility, and industrial-grade standby current of 5 mA.
Technical Context
The device implements a fully decoded 64K × 16 asynchronous SRAM array with separate address decoding paths for row and column selection. All control inputs (CE, OE, WE, BHE, BLE) are TTL/CMOS-compatible and active-low, enabling direct interfacing with microcontrollers and FPGAs without level-shifting.
Its automatic power-down feature activates when CE is HIGH, reducing ICC to 5 mA (ISB2) at VCC = 3.3 V. Output drivers support 8 mA sink capability (VOL = 0.4 V), and input leakage remains ≤±1 μA across industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 64K × 16-bit (1,048,576 bits); enables single-cycle 16-bit word access without external multiplexing. |
| Access Time (tAA) | 15 ns max (industrial temp); guarantees deterministic read latency for real-time control loops. |
| Supply Voltage | 3.3 V ±10%; compatible with modern low-voltage logic families and eliminates need for voltage translation. |
| Standby Current (ISB2) | 5 mA max (VCC = 3.3 V, CE HIGH); reduces system-level idle power in battery-backed or energy-sensitive applications. |
| Byte Enable Control | BHE/BLE active-low pins independently gate IO9–IO16 and IO1–IO8; enables efficient 8-bit peripheral interfacing. |
| Output Drive Strength | VOL = 0.4 V at IOL = 8 mA; ensures reliable signal integrity driving 50 Ω transmission lines or multiple CMOS loads. |
| Input Leakage | ±1 μA max (–40°C to +85°C); minimizes bus loading and prevents unintended state changes on shared address/data buses. |
Pinout & Package
Package: 44-pin TSOP II (0.400″ wide), JEDEC standard, lead-free compliant. Pin pitch: 0.8 mm, body width: 10.16 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Input | 16-bit unidirectional address bus; selects one of 65,536 memory locations. |
| IO1–IO8 / IO9–IO16 | Bidirectional Data I/O | Two independent 8-bit data ports; IO1–IO8 controlled by BLE, IO9–IO16 by BHE. |
| CE | Chip Enable (Active LOW) | Primary chip select; forces full device into high-Z or power-down when HIGH. |
| OE | Output Enable (Active LOW) | Enables output drivers during read; tri-states IOs when HIGH. |
| WE | Write Enable (Active LOW) | Initiates write cycle when CE and WE both LOW; disables outputs during write. |
| BLE / BHE | Byte Low/High Enable (Active LOW) | Selects lower or upper byte for write; allows partial-word writes without read-modify-write. |
| VCC | Power Supply | 3.3 V core 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 |
|---|---|
| Automatic CE Power-Down | Reduces ICC to 5 mA when CE = HIGH; eliminates need for external power management circuitry. |
| Dual Independent Byte Write | BLE/BHE allow simultaneous or selective 8-bit writes to upper/lower data bytes-critical for mixed-endian systems. |
| Industrial Temperature Support | Rated –40°C to +85°C; validated for use in programmable logic controllers and motor drive firmware storage. |
| Low Capacitance I/O | CIN/COUT = 8 pF max; minimizes signal distortion and timing skew on high-speed parallel buses. |
| Pb-Free Packaging | RoHS-compliant TSOP II footprint; supports automated SMT assembly without lead-free reflow profile adjustments. |
Applications
| Industrial PLC Data Buffer | FPGA Configuration Memory |
|---|---|
|
Use Scenario: Real-time I/O scan buffer in modular programmable logic controllers requiring deterministic 16-bit data exchange between CPU and fieldbus interface. IC Role / Device Role / Timing Role: Asynchronous SRAM serving as dual-port-accessible scratchpad memory; absorbs burst writes from motion control ASICs while feeding sequential reads to ARM Cortex-M4 core. Use Value: 15 ns tAA ensures sub-microsecond response to encoder interrupts; BHE/BLE enables atomic update of status flags without corrupting command words. |
Use Scenario: Storing configuration bitstreams and runtime lookup tables for Xilinx Artix-7 FPGA in edge AI inference accelerators. IC Role / Device Role / Timing Role: Off-chip configuration memory mapped to AXI-Lite bus; provides nonvolatile shadow storage for partial reconfiguration frames. Use Value: Dual-byte write capability allows incremental patching of neural network weight tables; ISB2 = 5 mA extends battery life during sleep-mode inference scheduling. |
| Automotive Body Control Module | Medical Imaging Signal Buffer |
|
Use Scenario: Temporary storage of CAN message payloads and diagnostic logs in AEC-Q100 Grade 2 compliant body control units. IC Role / Device Role / Timing Role: High-reliability SRAM interfaced to Infineon TC3xx microcontroller via 16-bit external bus; retains critical fault records during ignition cycling. Use Value: Automotive-E grade option supports 125°C junction operation; CE power-down preserves log integrity during 12 V brownout events. |
Use Scenario: Line-buffer memory in portable ultrasound beamformers processing 12-bit ADC samples at 40 MSPS. IC Role / Device Role / Timing Role: Ping-pong buffer staging raw RF echo data prior to FIR filtering; synchronized to FPGA-generated frame clocks. Use Value: 8 pF I/O capacitance maintains signal fidelity at 40 MHz bus rates; tHZOE = 7 ns enables tight turnaround between acquisition and processing phases. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV102416-15TQLI | 15 ns tAA, same 64K × 16 organization, but uses single-byte enable (UB/LB) instead of BHE/BLE; higher ISB2 = 12 mA. | Lacks independent high/low byte control; requires external logic for partial writes in legacy 8-bit peripherals. | Prefer when cost sensitivity outweighs byte-select flexibility and system power budget permits higher standby draw. |
| AS6C1008-15ZIN | 15 ns tAA, 1-Mbit density, but only 128K × 8 organization; no BHE/BLE; 2.7–3.6 V supply range. | Requires external byte-width adaptation for 16-bit bus systems; wider VCC tolerance suits variable-input power rails. | Choose only if migrating from 8-bit architectures or where supply voltage variation exceeds ±10% of 3.3 V. |
Compared with IS61LV102416-15TQLI and AS6C1008-15ZIN, CY7C1021CV33-15ZXCT uniquely delivers true dual-byte write control with industrial-grade 5 mA standby, making it optimal for deterministic real-time systems where partial-word updates and ultra-low idle power are jointly required.
Availability
CY7C1021CV33-15ZXCT is available at Aetrix Electronics and suitable for industrial PLCs, FPGA-based accelerators, automotive body controllers, and medical imaging subsystems requiring stable component supply and long-term lifecycle assurance.
Supply support for CY7C1021CV33-15ZXCT 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-performance memory and programmable solutions for industrial, automotive, and communications markets.
The CY7C1021CV33 belongs to Cypress's legacy high-speed SRAM product line, engineered specifically for low-latency, low-power parallel memory interfacing in resource-constrained embedded systems.
FAQ
What is the maximum operating frequency supported by CY7C1021CV33-15ZXCT?
The device does not operate on a clock signal-it is an asynchronous SRAM. Its performance is defined by access time (tAA = 15 ns max) and cycle time (tRC = 15 ns max), supporting effective bus throughput up to ~66.7 MHz for consecutive random accesses. No internal clock or PLL is present.
Can CY7C1021CV33-15ZXCT be used with 5 V logic interfaces?
No. The device is strictly a 3.3 V core supply part (VCC = 3.3 V ±10%). Input voltage limits are –0.5 V to VCC + 0.5 V (i.e., –0.5 V to 3.8 V). Direct connection to 5 V logic will exceed VIH absolute maximum and risk permanent damage.
Does CY7C1021CV33-15ZXCT support battery backup operation?
Yes-its automatic CE power-down mode draws only 5 mA (ISB2) at VCC = 3.3 V, and data retention is guaranteed down to VCC = 2.0 V per datasheet Section "DC Electrical Characteristics." External battery switchover circuitry must maintain VCC ≥ 2.0 V during main power loss.
How are the NC pins handled in PCB layout for CY7C1021CV33-15ZXCT?
NC pins (SOJ/TSOP pins 22, 23, 28) are not bonded to the die and must remain unconnected on the PCB. They may be left floating or tied to GND for mechanical stability-but no current path or signal routing should be assigned to them.
CY7C1021CV33-15ZXCT 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:
- 15ns
- Access Time:
- 15 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
CY7C1021CV33-15ZXCT FAQ
1.How can I place an order for CY7C1021CV33-15ZXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1021CV33-15ZXCT 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 CY7C1021CV33-15ZXCT reliable?
The price and inventory of CY7C1021CV33-15ZXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1021CV33-15ZXCT is usually 5 days.
3.What payment methods are accepted for CY7C1021CV33-15ZXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1021CV33-15ZXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1021CV33-15ZXCT?
CY7C1021CV33-15ZXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1021CV33-15ZXCT 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 CY7C1021CV33-15ZXCT?
For technical support, including CY7C1021CV33-15ZXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1021CV33-15ZXCT requirements.
6.How does Aetrix verify that CY7C1021CV33-15ZXCT is sourced from the original manufacturer or authorized distributors?
All CY7C1021CV33-15ZXCT 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 CY7C1021CV33-15ZXCT meets industry standards.
7.What is the process for return or replacement of CY7C1021CV33-15ZXCT?
All CY7C1021CV33-15ZXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1021CV33-15ZXCT, 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 CY7C1021CV33-15ZXCT part is unused and in its original packaging.
Return procedure for CY7C1021CV33-15ZXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C1021CV33-15ZXCT Tags
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