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Infineon Technologies CY7C1019B-12VC
- Part No.:
- CY7C1019B-12VC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 32-BSOJ (0.400", 10.16mm Width)
- Datasheet:
-
CY7C1019B-12VC.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32SOJ
- Quantity:
- Payment:
- Shipping:
Inventory:1,534
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Product details
Overview
CY7C1019B-12VC from Cypress Semiconductor is a 128K × 8 (131,072 × 8) high-speed CMOS static RAM with 12 ns access time, 5 V ±10% supply, commercial temperature range (0°C to +70°C), and automatic CE-controlled power-down. It serves as main or buffer memory in microcontroller-based instrumentation, legacy industrial controllers, and embedded data loggers requiring non-volatile backup support.
For engineers reviewing the CY7C1019B-12VC datasheet, CY7C1019B-12VC pinout, CY7C1019B-12VC application, or CY7C1019B-12VC equivalent, key selection criteria include tAA = 12 ns read timing, ISB1 = 40 mA standby current under TTL input conditions, center power/ground pinout for noise reduction, and SOJ-32 or TSOP-II-32 package compatibility.
Technical Context
The CY7C1019B-12VC implements a full CMOS SRAM array (512 × 256 × 8) with separate row/column decoders, sense amplifiers, and three-state I/O drivers. Its dual enable architecture-active-low Chip Enable (CE) and Output Enable (OE)-enables hierarchical memory expansion without external gating logic.
Write operation requires simultaneous CE LOW and WE LOW; read requires CE LOW and OE LOW with WE HIGH. The device enters automatic power-down (ISB1 = 40 mA) when CE is HIGH, independent of OE or WE state, and supports data retention at VCC = 2.0 V with ICCDR ≤ 300 μA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 131,072 words × 8 bits - supports byte-wide data bus interfacing without multiplexing |
| Access Time (tAA) | 12 ns - enables direct interface with 8-bit MCUs running ≤ 40 MHz system clocks |
| VCC Supply | 5 V ±10% - compatible with legacy 5 V TTL/CMOS logic families and industrial power rails |
| Operating Current (ICC) | 140 mA max - defines thermal budget for dense PCB layouts with multiple SRAMs |
| Standby Current (ISB1) | 40 mA max (TTL inputs) - determines quiescent power in idle controller states |
| Data Retention Voltage | VCC = 2.0 V - allows battery-backed hold during main power loss without external regulators |
| Input Capacitance | 6 pF - limits trace-length-induced timing skew on address/control buses |
Pinout & Package
The CY7C1019B-12VC is packaged in a 32-lead 400-mil molded SOJ (V33) with center power/ground pinout for reduced ground bounce and improved signal integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K address space; no address multiplexing required |
| I/O0–I/O7 | Bi-directional Data Bus | Three-state CMOS I/O pins sharing single 8-bit bus; high-impedance when CE HIGH, OE HIGH, or WE LOW |
| CE | Chip Enable | Active-low global select; drives automatic power-down when HIGH, enabling multi-chip decode schemes |
| OE | Output Enable | Active-low output gate; allows read operations while CE remains asserted, supporting burst reads |
| WE | Write Enable | Active-low write strobe; latches data only when CE is also LOW, preventing spurious writes |
| VCC | Power Supply | Two dedicated VCC pins (pins 16 & 32) placed centrally to minimize IR drop across die |
| VSS | Ground | Two dedicated VSS pins (pins 15 & 31) adjacent to VCC for low-inductance return paths |
Key Features
| Feature | Design Value |
|---|---|
| Center Power/Ground Pinout | Reduces simultaneous switching noise by symmetrically distributing VCC/VSS across package center, critical for stable operation in mixed-signal systems |
| Automatic CE Power-Down | Reduces ICC from 140 mA to 40 mA (TTL) or 10 mA (CMOS) when CE is deasserted-no software or external control needed |
| Three-State I/O Drivers | Enables direct connection to shared data buses without external transceivers; high-impedance state activated by CE HIGH, OE HIGH, or WE LOW |
| Functionally Equivalent to CY7C1019 | Provides drop-in replacement path for legacy designs using CY7C1019, preserving board layout and firmware timing margins |
Applications
| Industrial PLC I/O Buffer | Medical Device Data Logger |
|---|---|
Use Scenario: Stores real-time sensor readings and actuator command history in programmable logic controllers with limited external storage bandwidth. IC Role / Device Role / Timing Role: Byte-accessible scratchpad memory holding 128 KB of buffered I/O state changes between scan cycles. Use Value: 12 ns tAA ensures deterministic response within 100 μs PLC scan windows; ISB1 = 40 mA minimizes heat buildup in sealed enclosures. | Use Scenario: Captures timestamped physiological waveforms (ECG, SpO₂) during power interruptions in portable diagnostic equipment. IC Role / Device Role / Timing Role: Primary volatile buffer memory retaining data during brief AC dropout, backed by coin-cell-supplied VCC = 2.0 V retention mode. Use Value: Data retention at 2.0 V with ICCDR ≤ 300 μA extends battery life >72 hours; SOJ-32 footprint fits compact handheld form factors. |
| Legacy Test Equipment Controller | Avionics Maintenance Terminal |
Use Scenario: Hosts firmware overlays and calibration tables in benchtop multimeters and signal generators built on 8051 or Z80 derivatives. IC Role / Device Role / Timing Role: Memory-mapped code/data space extension supporting field-upgradable calibration constants and UI assets. Use Value: Pin-compatible with CY7C1019 simplifies obsolescence mitigation; 5 V tolerance avoids level-shifter redesign. | Use Scenario: Stores flight-line diagnostic logs and configuration snapshots in portable maintenance terminals used on aircraft ramp environments. IC Role / Device Role / Timing Role: Non-critical but time-sensitive storage for post-flight event records prior to upload via RS-232 or USB. Use Value: Industrial-grade SOJ-32 variant (CY7C1019B-12VI) operates reliably from –40°C to +85°C; CE-driven power-down cuts standby drain during transit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV12816-12T | 128K × 16 organization, 3.3 V supply, 12 ns access, TSOP-44 package | Requires data bus width adaptation (16-bit vs. 8-bit); incompatible with 5 V systems | Select only if migrating to 3.3 V architecture and redesigning address/data routing |
| CY7C1019D-12VC | Same 128K × 8, 5 V, 12 ns spec; improved ESD rating (4 kV HBM), updated process node | Pin- and function-compatible; supports same SOJ-32 footprint and timing | Preferred for new designs requiring enhanced robustness; retains full backward compatibility |
Compared with IS61LV12816-12T and CY7C1019D-12VC, the CY7C1019B-12VC offers guaranteed 5 V operation and legacy SOJ-32 fit-but lacks the ESD hardening of the 'D' revision and cannot replace 16-bit or 3.3 V SRAMs without hardware changes.
Availability
CY7C1019B-12VC is available at Aetrix Electronics and suitable for industrial PLC I/O buffering, medical data logging, and legacy test equipment controller applications requiring stable component supply and long-term obsolescence management.
Supply support for CY7C1019B-12VC 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) is a U.S.-based semiconductor company specializing in memory, PSoC, and USB solutions for industrial, automotive, and consumer markets.
The CY7C1019B belongs to Cypress's legacy parallel SRAM product line, designed specifically for 5 V embedded systems needing reliable, pin-compatible memory upgrades with minimal timing margin impact.
FAQ
What is the maximum clock frequency supported for read/write cycles?
The CY7C1019B-12VC does not use a clock; it is an asynchronous SRAM. Its 12 ns access time (tAA) and 12 ns cycle time (tRC) define the minimum interval between successive valid address changes during reads or writes. For reliable operation, address and control signals must meet setup/hold timing relative to CE/OE/WE edges-not a system clock.
Can CY7C1019B-12VC operate with 3.3 V supply?
No. The CY7C1019B-12VC is specified only for 5 V ±10% (4.5 V to 5.5 V). Applying 3.3 V will result in undefined operation, failure to meet tAA/tRC specs, and potential data corruption. For 3.3 V systems, consider the IS61LV1288 or CY62128EV30 series instead.
Does this SRAM require external refresh circuitry?
No. As a static RAM, the CY7C1019B-12VC retains data indefinitely as long as VCC is applied and CE is not held HIGH for extended periods beyond data retention specifications. No refresh cycles, timers, or external circuitry are needed-unlike DRAM devices.
Is the SOJ-32 package lead-free compliant?
The standard CY7C1019B-12VC (V33 package) uses SnPb eutectic solder. For RoHS-compliant assembly, specify CY7C1019B-12ZXC (TSOP-II, Pb-free) or confirm availability of Pb-free SOJ variants through Aetrix Electronics' component engineering team.
CY7C1019B-12VC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 32-BSOJ (0.400", 10.16mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 12ns
- Access Time:
- 12 ns
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-SOJ
CY7C1019B-12VC FAQ
1.How can I place an order for CY7C1019B-12VC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1019B-12VC 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 CY7C1019B-12VC reliable?
The price and inventory of CY7C1019B-12VC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1019B-12VC is usually 5 days.
3.What payment methods are accepted for CY7C1019B-12VC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1019B-12VC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1019B-12VC?
CY7C1019B-12VC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1019B-12VC 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 CY7C1019B-12VC?
For technical support, including CY7C1019B-12VC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1019B-12VC requirements.
6.How does Aetrix verify that CY7C1019B-12VC is sourced from the original manufacturer or authorized distributors?
All CY7C1019B-12VC 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 CY7C1019B-12VC meets industry standards.
7.What is the process for return or replacement of CY7C1019B-12VC?
All CY7C1019B-12VC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1019B-12VC, 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 CY7C1019B-12VC part is unused and in its original packaging.
Return procedure for CY7C1019B-12VC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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