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Infineon Technologies CY7C1020BN-15ZXC
- Part No.:
- CY7C1020BN-15ZXC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 44-TSOP (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1020BN-15ZXC.pdf
- Description:
- IC SRAM 512KBIT PAR 44TSOP II
- Quantity:
- Payment:
- Shipping:
Inventory:1,788
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Product details
Overview
CY7C1020BN-15ZXC from Cypress Semiconductor is a 32K × 16-bit (512 Kbit) high-speed CMOS static RAM with 15 ns access time, 5 V supply, and automatic CE-controlled power-down. It supports independent byte-wide write enable via BHE/BLE pins and operates across commercial temperature range (0°C to +70°C) in Pb-free 44-pin TSOP II package. Used in legacy industrial controllers and FPGA configuration buffers requiring deterministic read/write timing.
For engineers reviewing the CY7C1020BN-15ZXC datasheet, CY7C1020BN-15ZXC pinout, CY7C1020BN-15ZXC application, or CY7C1020BN-15ZXC equivalent, this page delivers verified electrical specs, validated byte-enable timing behavior, real-world SRAM interface constraints, and direct package-compatible alternatives for board-level redesign or obsolescence mitigation.
Technical Context
The CY7C1020BN-15ZXC implements a fully asynchronous static RAM core with dual-byte write control: BLE enables I/O1–I/O8 (lower byte), BHE enables I/O9–I/O16 (upper byte). Address decoding covers A0–A15 (16-bit address bus), supporting 65,536 word locations.
Its power management relies on CE-driven automatic power-down: ISB2 standby current is only 0.5 mA at CMOS input thresholds, while active ICC is 130 mA max at fMAX = 66.7 MHz. Output drive meets TTL-compatible VOH ≥ 2.4 V and VOL ≤ 0.4 V under specified loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 32,768 words × 16 bits = 512 Kbit; requires 16-bit data bus and 16-bit address bus (A0–A15) |
| Access Time (tAA) | 15 ns max; defines minimum clock-to-data delay in synchronous interfaces or maximum bus cycle rate (66.7 MHz) |
| Supply Voltage | 5.0 V ±10%; not compatible with 3.3 V or mixed-voltage systems without level translation |
| Active Current (ICC) | 130 mA max; determines PCB trace width and local decoupling (≥10 µF bulk + 0.1 µF ceramic per VCC pin) |
| Standby Current (ISB2) | 0.5 mA max at CMOS input thresholds; enables low-power hold mode during processor sleep states |
| Byte Enable Logic | BLE and BHE are active-low; allow simultaneous or independent 8-bit writes without external gating logic |
| Output Drive Strength | IOH = –4 mA / IOL = 8 mA at VCC min; sufficient to drive one TTL load or three CMOS inputs directly |
Pinout & Package
Package: 44-pin TSOP Type II (10.16 mm × 20.95 mm, 0.8 mm pitch), Pb-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A15 | Address Inputs | 16-bit address bus; latched on CE/WE transitions; no internal address register - fully combinatorial decode |
| I/O1–I/O8 | Data I/O (Lower Byte) | Bidirectional bus segment enabled only when BLE = LOW; high-impedance when BLE = HIGH or CE = HIGH |
| I/O9–I/O16 | Data I/O (Upper Byte) | Bidirectional bus segment enabled only when BHE = LOW; isolated from lower byte during partial writes |
| CE | Chip Enable | Primary device select; forces automatic power-down and high-Z outputs when HIGH; overrides OE/WE |
| OE | Output Enable | Controls output drivers only; must be LOW with CE LOW and WE HIGH for read; no effect during write |
| WE | Write Enable | Active-low write strobe; write occurs only when CE, WE, and at least one of BHE/BLE are LOW |
| BLE | Byte Low Enable | Enables write/read on I/O1–I/O8; allows 8-bit microprocessor interfacing without data bus splitting |
| BHE | Byte High Enable | Enables write/read on I/O9–I/O16; supports x16 bus operation or independent upper/lower byte access |
| VCC, VSS | Power Supply | Two dedicated VCC (pins 16, 32) and two VSS (pins 15, 31) pins reduce switching noise and improve signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| 15 ns access time with full 16-bit bus | Enables direct interface with 66 MHz microcontrollers without wait states; eliminates glue logic for timing alignment |
| Independent BHE/BLE byte control | Permits 8-bit or 16-bit data transfers on same bus; avoids need for external byte multiplexers or bus transceivers |
| Automatic CE power-down (ISB2 = 0.5 mA) | Reduces system standby power by >99% vs. active mode; suitable for battery-backed memory retention applications |
| TSOP II Pb-free package | Compatible with standard IR reflow profiles (J-STD-020); eliminates lead-based solder compatibility concerns in new designs |
| TTL-compatible input thresholds | Accepts 0.8 V/2.2 V logic levels; interoperable with legacy 5 V microcontrollers, FPGAs, and CPLDs without level shifters |
Applications
| Industrial PLC Data Buffer | FPGA Configuration Memory |
|---|---|
|
Use Scenario: Stores real-time I/O scan data between CPU cycles in programmable logic controllers with 5 V backplanes. IC Role / Device Role / Timing Role: Asynchronous data buffer holding 64 KB of process variables; accessed via 16-bit ISA-like bus with fixed 15 ns latency. Use Value: Deterministic tAA ensures consistent scan cycle timing; byte enables allow selective update of analog channel registers without disturbing digital status bytes. |
Use Scenario: Holds configuration bitstream for Xilinx Spartan-3 FPGAs during power-up, loaded via parallel slave mode. IC Role / Device Role / Timing Role: Nonvolatile configuration storage surrogate; provides 16-bit wide parallel read path synchronized to FPGA CCLK. Use Value: 15 ns tAA meets Spartan-3's 20 ns setup requirement; BHE/BLE support enables partial reconfiguration of logic blocks without full bitstream reload. |
| Legacy Medical Imaging Controller | Automotive Engine Control Unit (ECU) Log Buffer |
|
Use Scenario: Captures frame-aligned sensor data from CCD line arrays in ultrasound front-end modules operating at 5 V. IC Role / Device Role / Timing Role: High-speed FIFO replacement; accepts burst writes from ADC interface and feeds DSP pipeline via fixed-address reads. Use Value: Dual-byte write enables interleaved pixel packing (YUV 4:2:2); tHZOE = 7 ns ensures clean bus release before next DMA cycle. |
Use Scenario: Logs diagnostic trouble codes and sensor snapshots during engine cranking in Tier 2 ECU designs with 5 V MCU buses. IC Role / Device Role / Timing Role: Crash-proof RAM buffer; retains last 128 fault records through brown-out events using CE-controlled power-down. Use Value: ISB2 = 0.5 mA enables >72-hour battery backup with single CR2032; tPD = 15 ns guarantees data retention during voltage sag recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed parallel SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AS6C1008-15TIN | 128K × 8 organization; 15 ns access; 3.3 V only; different pinout (32-pin SOJ) | Requires bus-width adaptation (two devices for x16) and level-shifting for 5 V systems | Choose only if migrating to 3.3 V architecture and accepting doubled footprint and routing complexity |
| IS61LV51216-15TQLI | 32K × 16; 15 ns; 3.3 V supply; 44-pin TSOP II; LVCMOS I/O | Not 5 V tolerant; needs level translators for legacy 5 V MCU interfaces | Select when upgrading entire system to 3.3 V and prioritizing lower active power (60 mA vs. 130 mA) |
Compared with AS6C1008-15TIN and IS61LV51216-15TQLI, the CY7C1020BN-15ZXC uniquely supports native 5 V operation and byte-selectable x16 interface in a drop-in TSOP II footprint-critical for maintaining signal integrity and minimizing redesign effort in legacy platforms.
Availability
CY7C1020BN-15ZXC is available at Aetrix Electronics and suitable for industrial PLC data buffering, FPGA configuration storage, legacy medical imaging controllers, and automotive ECU log buffering requiring stable component supply and long-term lifecycle support.
Supply support for CY7C1020BN-15ZXC 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 CY7C1020BN belongs to Cypress's legacy parallel SRAM product line, engineered specifically for 5 V microprocessor and FPGA co-processing systems demanding deterministic timing and robust bus interfacing.
FAQ
Is CY7C1020BN-15ZXC compatible with 3.3 V I/O systems?
No. The CY7C1020BN-15ZXC is a 5 V-only device with VIH(min) = 2.2 V and VIL(max) = 0.8 V. Interfacing with 3.3 V logic requires bidirectional level translators such as TXB0108 or discrete MOSFET buffers; direct connection risks input overvoltage and unreliable operation.
Can BHE and BLE be asserted simultaneously for full 16-bit writes?
Yes. When both BHE and BLE are LOW, all 16 I/O pins (I/O1–I/O16) become active for concurrent write or read. This matches standard x16 bus operation and is explicitly supported in the truth table on page 7 of the datasheet.
What is the maximum clock frequency supported for burst reads?
The device has no internal clock; it is fully asynchronous. Maximum effective throughput is limited by tRC = 15 ns, yielding a theoretical peak rate of 66.7 million 16-bit words per second. Sustained burst performance depends on external controller timing margins and bus loading.
Does CY7C1020BN-15ZXC support battery backup operation?
Yes. With CE held HIGH, ISB2 current drops to 0.5 mA max, enabling multi-day retention on a CR2032 coin cell (220 mAh) when paired with a diode-OR power circuit. Data retention is guaranteed down to VCC = 2 V per datasheet Section "DC Electrical Characteristics".
CY7C1020BN-15ZXC 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:
- 512Kbit
- Memory Organization:
- 32K x 16
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 15ns
- Access Time:
- 15 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 44-TSOP II
CY7C1020BN-15ZXC FAQ
1.How can I place an order for CY7C1020BN-15ZXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1020BN-15ZXC 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 CY7C1020BN-15ZXC reliable?
The price and inventory of CY7C1020BN-15ZXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1020BN-15ZXC is usually 5 days.
3.What payment methods are accepted for CY7C1020BN-15ZXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1020BN-15ZXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1020BN-15ZXC?
CY7C1020BN-15ZXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1020BN-15ZXC 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 CY7C1020BN-15ZXC?
For technical support, including CY7C1020BN-15ZXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1020BN-15ZXC requirements.
6.How does Aetrix verify that CY7C1020BN-15ZXC is sourced from the original manufacturer or authorized distributors?
All CY7C1020BN-15ZXC 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 CY7C1020BN-15ZXC meets industry standards.
7.What is the process for return or replacement of CY7C1020BN-15ZXC?
All CY7C1020BN-15ZXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1020BN-15ZXC, 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 CY7C1020BN-15ZXC part is unused and in its original packaging.
Return procedure for CY7C1020BN-15ZXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C1020BN-15ZXC Tags
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M24C02-WMN6TP
STMicroelectronics
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AT24C02C-XHM-T
Microchip Technology
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Microchip Technology
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Microchip Technology
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Microchip Technology
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STMicroelectronics
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Microchip Technology
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Microchip Technology
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