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Infineon Technologies CY7C1020D-10ZSXIT
- Part No.:
- CY7C1020D-10ZSXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1020D-10ZSXIT.pdf
- Description:
- IC SRAM 512KBIT PAR 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:4,821
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Product details
Overview
CY7C1020D-10ZSXIT from Cypress Semiconductor is a 512-Kbit (32 K × 16) asynchronous CMOS static RAM with 10 ns access time, 5 V ±0.5 V supply, 80 mA active current, 3 mA CMOS standby current, and 2.0 V data retention voltage. It serves as a high-speed, byte-selectable memory buffer in industrial microcontroller and DSP subsystems requiring deterministic read/write timing and TTL-level compatibility.
For engineers reviewing the CY7C1020D-10ZSXIT datasheet, CY7C1020D-10ZSXIT pinout, CY7C1020D-10ZSXIT application, or CY7C1020D-10ZSXIT equivalent, key selection criteria include tAA = 10 ns read latency, independent BHE/ BLE control for 8-bit sub-word writes, automatic CE-driven power-down, and SOJ/TSOP II package compatibility with legacy 44-pin SRAM footprints.
Technical Context
The CY7C1020D-10ZSXIT implements a fully asynchronous 32,768 × 16-bit SRAM array with dual-byte enable architecture: BLE controls IO0–IO7 (lower byte), BHE controls IO8–IO15 (upper byte). Address decoding uses A0–A14 (15-bit), supporting 32K word addressing without external latching.
It features three power states: active (CE/WE/OE asserted per cycle), standby (CE HIGH), and data retention (VCC = 2.0 V, CE HIGH). Input thresholds are TTL-compatible (VIH = 2.2 V min, VIL = 0.8 V max), not CMOS-compatible, and output drive meets –4.0 mA/8.0 mA specs at VOH ≥ 2.4 V and VOL ≤ 0.4 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32 K × 16 bits - supports 16-bit parallel bus interfacing without data splitting |
| Access Time (tAA) | 10 ns - enables direct coupling to 100 MHz bus cycles with zero wait states |
| Supply Voltage | 5 V ±0.5 V - matches legacy 5 V logic families and eliminates level-shifting needs |
| Active Current (ICC) | 80 mA @ 10 ns - defines peak power draw during sustained burst reads/writes |
| Standby Current (ISB2) | 3 mA - enables low-power hold mode when deselected with CMOS inputs |
| Data Retention Voltage | 2.0 V - allows battery-backed operation below nominal VCC while preserving contents |
| Input Compatibility | TTL-level only - VIH ≥ 2.2 V, VIL ≤ 0.8 V; incompatible with pure CMOS input thresholds |
Pinout & Package
Package: 44-pin TSOP II (Thin Small Outline Package), 400-mil width, RoHS-compliant, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address Inputs | 15-bit address bus accepting 0–32767 word locations; no internal latching |
| IO0–IO7 | Lower Data I/O | Bi-directional 8-bit data path enabled only when BLE = LOW |
| IO8–IO15 | Upper Data I/O | Bi-directional 8-bit data path enabled only when BHE = LOW |
| CE | Chip Enable | Active-LOW global select; drives automatic power-down when HIGH |
| OE | Output Enable | Active-LOW read control; places outputs in Hi-Z when HIGH |
| WE | Write Enable | Active-LOW write strobe; initiates write when CE and WE both LOW |
| BLE | Byte Low Enable | Active-LOW control for lower byte (IO0–IO7); enables partial-word writes |
| BHE | Byte High Enable | Active-LOW control for upper byte (IO8–IO15); enables partial-word writes |
| VCC | Power Supply | +5 V ±0.5 V main supply; two dedicated pins reduce IR drop |
| VSS | Ground | Signal and power ground reference; two dedicated pins improve noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Independent Byte Enables (BHE/BLE) | Enables 8-bit sub-word writes without masking or read-modify-write cycles |
| Automatic CE Power-Down | Reduces ICC from 80 mA to 3 mA within 10 ns of CE deassertion |
| TTL-Compatible Inputs | Eliminates need for external level shifters when interfacing with 5 V microcontrollers |
| 2.0 V Data Retention | Permits backup power operation using coin-cell batteries or supercapacitors |
| High-Z Output Control | Ensures bus contention-free sharing with multiple devices via OE, CE, and BHE/BLE |
Applications
| Industrial PLC Data Buffer | DSP Algorithm Scratchpad |
|---|---|
Use Scenario: Real-time I/O scan buffering in programmable logic controllers operating across –40 °C to +85 °C ambient. IC Role / Device Role / Timing Role: Asynchronous 16-bit SRAM providing zero-wait-state storage for process image tables and register mapping. Use Value: 10 ns tAA ensures deterministic response to fast scan cycles; 3 mA ISB2 reduces thermal load during idle polling intervals. | Use Scenario: Temporary coefficient and intermediate result storage in fixed-point audio DSP engines. IC Role / Device Role / Timing Role: Byte-selectable memory enabling simultaneous 8-bit filter taps and 16-bit accumulator staging. Use Value: Independent BHE/BLE allows concurrent low-byte coefficient updates and high-byte accumulation without bus arbitration. |
| Legacy 5 V Microcontroller Expansion | Automated Test Equipment Memory Cache |
Use Scenario: External memory expansion for 8051- and Z80-based embedded controllers retaining original 5 V bus architecture. IC Role / Device Role / Timing Role: Pin-compatible SRAM replacement supporting TTL-level address/data/control signaling. Use Value: VIH = 2.2 V min and VOL = 0.4 V max ensure reliable interfacing without level translators or pull-up adjustments. | Use Scenario: High-speed pattern buffer in boundary-scan test systems requiring rapid vector loading and verification. IC Role / Device Role / Timing Role: Burst-access memory staging test vectors prior to JTAG chain injection. Use Value: tRC = 10 ns and tDOE = 5 ns enable full-speed vector delivery synchronized to 100 MHz test clocks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AS6C4008-10TIN | 4 Mbit (256 K × 16), 10 ns, 3.3 V only, CMOS input thresholds | Requires level shifting for 5 V TTL buses; higher density but incompatible voltage domain | Select only if migrating to 3.3 V system architecture and needing >512 Kbit capacity |
| IS61LV25616AL-10TLI | 4 Mbit (256 K × 16), 10 ns, 3.3 V, LVTTL-compatible inputs (VIH = 2.0 V) | Supports 3.3 V systems with marginal TTL compatibility; lacks 2.0 V data retention | Prefer for new 3.3 V designs where extended low-voltage retention is not required |
Compared with AS6C4008-10TIN and IS61LV25616AL-10TLI, the CY7C1020D-10ZSXIT uniquely delivers 5 V TTL compatibility, 2.0 V data retention, and proven industrial temperature operation-making it irreplaceable in legacy 5 V control systems requiring battery-backed state preservation.
Availability
CY7C1020D-10ZSXIT is available at Aetrix Electronics and suitable for industrial PLC data buffering, DSP algorithm scratchpad storage, and legacy 5 V microcontroller expansion requiring stable component supply over extended product lifecycles.
Supply support for CY7C1020D-10ZSXIT 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.
The CY7C1020D belongs to Cypress's legacy asynchronous SRAM product line, engineered specifically for pin- and function-compatible upgrades of 5 V TTL-based systems requiring deterministic timing and robust data retention.
FAQ
Is CY7C1020D-10ZSXIT compatible with 3.3 V logic interfaces?
No. The device requires 5 V ±0.5 V supply and has TTL-level input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V), not CMOS or LVTTL. Direct connection to 3.3 V controllers risks undervoltage VIH violations and unreliable operation. Level translation is mandatory for mixed-voltage systems.
What happens to data when VCC drops to 2.0 V?
At VCC = 2.0 V with CE HIGH, the device enters data retention mode and preserves stored bits indefinitely, drawing ≤3 mA. This is specified and tested per JEDEC JESD22-A107. No refresh or external clock is needed-only stable 2.0 V bias and deselection.
Can CY7C1020D-10ZSXIT perform simultaneous read and write on different bytes?
No. The device is strictly asynchronous and single-port: only one operation (read or write) may occur per cycle. BHE/BLE enable selective byte access *within* a single read or write cycle-not concurrent operations. True simultaneous R/W requires dual-port or QDR SRAM.
Does the TSOP II package support reflow soldering per J-STD-020?
Yes. The CY7C1020D-10ZSXIT in TSOP II package is qualified for lead-free reflow per J-STD-020D, with peak temperature up to 260 °C and floor life of 168 hours at ≤30 °C/60% RH when sealed per MSL 3 requirements.
CY7C1020D-10ZSXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 44-TSOP (0.400", 10.16mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 512Kbit
- Memory Organization:
- 32K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 10ns
- Access Time:
- 10 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
CY7C1020D-10ZSXIT FAQ
1.How can I place an order for CY7C1020D-10ZSXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1020D-10ZSXIT 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 CY7C1020D-10ZSXIT reliable?
The price and inventory of CY7C1020D-10ZSXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1020D-10ZSXIT is usually 5 days.
3.What payment methods are accepted for CY7C1020D-10ZSXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1020D-10ZSXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1020D-10ZSXIT?
CY7C1020D-10ZSXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1020D-10ZSXIT 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 CY7C1020D-10ZSXIT?
For technical support, including CY7C1020D-10ZSXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1020D-10ZSXIT requirements.
6.How does Aetrix verify that CY7C1020D-10ZSXIT is sourced from the original manufacturer or authorized distributors?
All CY7C1020D-10ZSXIT 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 CY7C1020D-10ZSXIT meets industry standards.
7.What is the process for return or replacement of CY7C1020D-10ZSXIT?
All CY7C1020D-10ZSXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1020D-10ZSXIT, 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 CY7C1020D-10ZSXIT part is unused and in its original packaging.
Return procedure for CY7C1020D-10ZSXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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