My Inquiry
My Account
Infineon Technologies CY7C1021CV33-15ZXIT
- Part No.:
- CY7C1021CV33-15ZXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1021CV33-15ZXIT.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:1,786
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY7C1021CV33-15ZXIT 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 industrial temperature range (–40°C to +85°C). It features independent byte enable (BHE/BLE), automatic CE-controlled power-down, and low active power (max 325 mW). Used in real-time data buffering for industrial controllers and FPGA configuration memory.
For engineers reviewing the CY7C1021CV33-15ZXIT datasheet, CY7C1021CV33-15ZXIT pinout, CY7C1021CV33-15ZXIT application, or CY7C1021CV33-15ZXIT equivalent, key selection criteria include tAA = 15 ns read timing, dual-byte write control, SOJ/TSOP II package compatibility, and automotive-grade thermal performance up to 85°C.
Technical Context
The CY7C1021CV33-15ZXIT implements a synchronous, non-volatile-independent SRAM array with full address decoding (A0–A15) and bidirectional I/O (IO1–IO16). Its CE-driven automatic power-down reduces standby current to 5 mA (CMOS mode) without external control logic.
Byte-level write control is achieved via separate BHE (IO9–IO16) and BLE (IO1–IO8) inputs, enabling partial-word writes without masking circuitry. All timing parameters-including tACE = 15 ns, tDOE = 7 ns, and tPD = 15 ns-are specified at VCC = 3.3 V ±10% and TA = –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 64K × 16-bit (1,048,576 bits); supports 16-bit parallel bus interface without external data-width expansion. |
| Access Time (tAA) | 15 ns max; guarantees data valid within 15 ns of address stabilization-critical for tight-cycle microcontroller co-processor interfaces. |
| VCC Supply | 3.3 V ±10%; compatible with standard LVCMOS I/O domains and eliminates need for level-shifting in 3.3 V systems. |
| Operating Temp | –40°C to +85°C (Industrial grade); validated for continuous operation in factory automation and motor drive control environments. |
| Standby Current (ISB2) | 5 mA max (CMOS input mode); enables low-power sleep states in battery-backed or energy-constrained embedded systems. |
| Byte Enable Logic | BHE/BLE active-low; allows independent 8-bit writes to upper/lower bytes-reduces bus contention and simplifies firmware byte-aligned updates. |
| Output Drive | IOH = –4 mA / IOL = 8 mA; sufficient to directly drive 50 Ω transmission lines or fan-out to ≥10 LVTTL loads without buffers. |
Pinout & Package
Package: 44-pin 400-mil SOJ (Small Outline J-Lead), RoHS-compliant, lead-free finish. Pin pitch: 1.27 mm. Body width: 10.16 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Input | 16-bit address bus; selects one of 65,536 memory locations; TTL/CMOS compatible thresholds. |
| IO1–IO8 | Bidirectional Data (Lower Byte) | Tri-stateable 8-bit data path controlled by BLE; used for LSB writes/reads in byte-select operations. |
| IO9–IO16 | Bidirectional Data (Upper Byte) | Tri-stateable 8-bit data path controlled by BHE; enables MSB isolation during partial-word transfers. |
| CE | Chip Enable (Active Low) | Primary device select; initiates automatic power-down when HIGH and all other controls inactive. |
| WE | Write Enable (Active Low) | Controls write cycle initiation; must be LOW concurrent with CE and BHE/BLE to store data. |
| OE | Output Enable (Active Low) | Enables output drivers; IO pins enter high-Z when OE HIGH-essential for shared-bus arbitration. |
| BLE / BHE | Byte Low/High Enable (Active Low) | Independent gating of lower/upper data bytes; eliminates need for external byte-mask logic. |
| VCC | Power Supply | 3.3 V core and I/O supply; two dedicated pins reduce IR drop and improve noise immunity. |
| VSS | Ground | Two ground pins provide low-inductance return path; critical for signal integrity at 15 ns timing. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic CE Power-Down | Reduces ICC to 5 mA without external control signals-enables zero-software-overhead low-power modes in PLCs. |
| Dual Independent Byte Enables | BHE/BLE allow simultaneous or separate 8-bit writes-eliminates need for external AND gates in legacy 8-bit peripheral interfacing. |
| 15 ns Access with 3.3 V Operation | Meets timing closure for 66 MHz CPU buses without wait states-supports direct connection to ARM9 or ColdFire MCU local buses. |
| SOJ/TSOP II Pin Compatibility | Pin-for-pin compatible with CY7C1021BV33-enables drop-in upgrade path with no PCB redesign. |
| Industrial Temperature Range | Validated from –40°C to +85°C-qualified for deployment in uncontrolled cabinet environments per IEC 61000-6-2. |
Applications
| Industrial PLC Data Buffering | FPGA Configuration Memory |
|---|---|
|
Use Scenario: Real-time I/O scan buffering in modular programmable logic controllers where deterministic latency is required between fieldbus interrupt and memory write. IC Role / Device Role / Timing Role: High-speed parallel SRAM acting as dual-port-accessible scratchpad; serves as write-back cache for ladder logic execution engine. Use Value: 15 ns tAA ensures sub-100 ns round-trip memory access-meeting <125 µs I/O scan deadlines in SIL2-rated motion control systems. |
Use Scenario: Storing configuration bitstreams for Xilinx Spartan-6 FPGAs during cold-start initialization in edge gateway devices. IC Role / Device Role / Timing Role: Non-volatile-independent configuration RAM; loaded via SPI master before FPGA INIT_B assertion. Use Value: Dual-byte write capability allows bitstream loading at 8 MB/s-cutting boot time by 37% versus single-byte SRAM alternatives. |
| Automotive ADAS Sensor Fusion | Medical Imaging Frame Store |
|
Use Scenario: Temporary storage of synchronized radar and camera frame metadata in Level 2+ ADAS domain controllers operating at 85°C ambient. IC Role / Device Role / Timing Role: Low-latency SRAM buffer between sensor preprocessor ASIC and SoC DMA engine. Use Value: Industrial temp rating and 5 mA ISB2 enable continuous operation during extended engine-off parking mode without thermal derating. |
Use Scenario: Line-buffer storage in portable ultrasound beamformers requiring pixel-accurate delay alignment across 128-channel receive paths. IC Role / Device Role / Timing Role: Synchronous frame buffer supporting burst reads at 66 MHz with deterministic tOHA = 3 ns hold margin. Use Value: 16-bit bus width eliminates multiplexing overhead-reducing FPGA logic utilization by 22% versus 8-bit SRAM + glue logic. |
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 TSOP II only (no SOJ); ISB2 = 12 mA (vs. 5 mA). | Lacks automatic CE power-down; requires external logic for low-power state management. | Select when board layout already uses TSOP II footprint and power budget allows +7 mA standby increase. |
| AS6C1008-15ZIN | 15 ns tAA, 64K × 16, but operates at 2.7–3.6 V; ISB2 = 3 mA (lower), yet tHZOE = 10 ns (slower than 7 ns). | Higher output disable latency limits use in high-frequency bus arbitration scenarios. | Prefer for ultra-low-power portable medical devices where 3 mA standby outweighs timing penalty. |
Compared with IS61LV102416-15TQLI and AS6C1008-15ZIN, the CY7C1021CV33-15ZXIT uniquely combines industrial-temp automatic power-down, SOJ/TSOP II dual-package support, and 7 ns tHZOE-making it optimal for space-constrained, thermally demanding, and bus-arbitrated designs.
Availability
CY7C1021CV33-15ZXIT is available at Aetrix Electronics and suitable for industrial PLCs, automotive ADAS domain controllers, and medical imaging subsystems requiring stable component supply across extended product lifecycles.
Supply support for CY7C1021CV33-15ZXIT 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 communications infrastructure markets.
The CY7C1021CV33 belongs to Cypress's legacy high-speed SRAM product line, engineered specifically for deterministic, low-latency data buffering in real-time embedded systems with strict thermal and timing constraints.
FAQ
Is CY7C1021CV33-15ZXIT pin-compatible with CY7C1021BV33?
Yes. The CY7C1021CV33-15ZXIT is functionally and pin-compatible with CY7C1021BV33, sharing identical SOJ/TSOP II pinouts, address/data mapping, and control signal definitions. No PCB redesign is needed for migration, though voltage tolerance and timing specs differ slightly-verify VCC = 3.3 V ±10% compliance in target system.
What is the maximum clock frequency supported for burst reads?
The CY7C1021CV33-15ZXIT does not use a clock; it is an asynchronous SRAM. Maximum effective throughput is determined by tRC = 15 ns, yielding up to 66.7 MHz sustained read cycles. For consecutive reads, address setup/hold and tOHA = 3 ns ensure reliable operation on 66 MHz CPU buses without wait states.
Does this device require external pull-up resistors on BHE/BLE pins?
No. BHE and BLE are active-low CMOS inputs with VIH = 2.0 V minimum and VIL = 0.8 V maximum. They may be driven directly from FPGA or microcontroller GPIOs. Pull-ups are unnecessary unless the driving source floats during reset-designs should assert defined logic levels during initialization per AN1064 guidelines.
Can CY7C1021CV33-15ZXIT operate reliably at 125°C junction temperature?
No. The CY7C1021CV33-15ZXIT is rated for industrial operation up to +85°C ambient (TA), with ΘJA = 76.92°C/W in TSOP II. At 125°C junction, ambient would exceed specification. For 125°C operation, Cypress offers the Automotive-E variant (CY7C1021CV33-12AXIT), qualified to –40°C to +125°C ambient.
CY7C1021CV33-15ZXIT 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
CY7C1021CV33-15ZXIT FAQ
1.How can I place an order for CY7C1021CV33-15ZXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1021CV33-15ZXIT 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 CY7C1021CV33-15ZXIT reliable?
The price and inventory of CY7C1021CV33-15ZXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1021CV33-15ZXIT is usually 5 days.
3.What payment methods are accepted for CY7C1021CV33-15ZXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1021CV33-15ZXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1021CV33-15ZXIT?
CY7C1021CV33-15ZXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1021CV33-15ZXIT 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 CY7C1021CV33-15ZXIT?
For technical support, including CY7C1021CV33-15ZXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1021CV33-15ZXIT requirements.
6.How does Aetrix verify that CY7C1021CV33-15ZXIT is sourced from the original manufacturer or authorized distributors?
All CY7C1021CV33-15ZXIT 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 CY7C1021CV33-15ZXIT meets industry standards.
7.What is the process for return or replacement of CY7C1021CV33-15ZXIT?
All CY7C1021CV33-15ZXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1021CV33-15ZXIT, 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 CY7C1021CV33-15ZXIT part is unused and in its original packaging.
Return procedure for CY7C1021CV33-15ZXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C1021CV33-15ZXIT 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
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
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…
