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Infineon Technologies CY7C1399BNL-12ZXC
- Part No.:
- CY7C1399BNL-12ZXC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 28-TSSOP (0.465", 11.80mm Width)
- Datasheet:
-
CY7C1399BNL-12ZXC.pdf
- Description:
- IC SRAM 256KBIT PAR 28TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:2,048
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Product details
Overview
CY7C1399BNL-12ZXC from Cypress Semiconductor is a 256-Kbit (32 K × 8) asynchronous CMOS static RAM with single 3.3 V supply, 12 ns access time, industrial temperature range (–40 °C to +85 °C), and automatic CE-controlled power-down mode. It serves as cache or buffer memory in embedded controllers, FPGA configuration storage, and real-time data logging systems where deterministic timing and low standby current are critical.
For engineers reviewing the CY7C1399BNL-12ZXC datasheet, CY7C1399BNL-12ZXC pinout, CY7C1399BNL-12ZXC application, or CY7C1399BNL-12ZXC equivalent, key selection criteria include access time consistency across temperature, tristate I/O behavior under OE/CE control, retention voltage margin at 2.0 V, and compatibility with 28-pin TSOP-I footprint for board-level replacement.
Technical Context
The CY7C1399BNL-12ZXC implements a fully asynchronous SRAM architecture with independent address decoding, 6T alpha-immune memory cells, and dual active-Low control signals (CE, OE) enabling seamless memory expansion. Its read cycle is initiated by CE and OE both LOW while WE is HIGH, with data valid within 12 ns of address stabilization or CE assertion.
Write operation requires simultaneous CE and WE LOW; termination occurs on the first rising edge of either signal. Output drivers enter high-impedance state when CE is HIGH or OE is HIGH, and automatic power-down reduces ICC to ≤5 µA (CMOS inputs) or ≤5 mA (TTL inputs) during deselect.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 32 K × 8 = 256 Kbit; supports byte-wide data bus without external multiplexing |
| Access Time | 12 ns max; guarantees deterministic read latency for real-time interrupt handlers |
| Supply Voltage | 3.3 V ±300 mV; compatible with modern low-voltage logic families and LDO outputs |
| Operating Temp | –40 °C to +85 °C; qualified for industrial control and automotive-A environments |
| Standby Current | ≤5 µA (CMOS inputs); enables battery-backed retention in sleep modes |
| Data Retention VCC | 2.0 V min; maintains stored data during brown-out or backup power transitions |
| I/O Drive Strength | IOH = –2.0 mA, IOL = 4.0 mA; ensures noise margin with 30 pF load and 3 ns edge rates |
Pinout & Package
Package: 28-pin TSOP-I (Type I), 8.1 mm × 13.4 mm body, 0.5 mm pitch, lead-free (RoHS-compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A14 | Address Inputs | 15-bit address bus; selects one of 32,768 locations; no internal latching |
| I/O0–I/O7 | Bidirectional Data Bus | High-impedance when CE HIGH or OE HIGH; driven only during valid read/write cycles |
| CE | Chip Enable (active LOW) | Primary device select; initiates automatic power-down when HIGH |
| OE | Output Enable (active LOW) | Controls output driver enable; does not affect internal memory state |
| WE | Write Enable (active LOW) | Controls direction of I/O bus; LOW enables write, HIGH enables read |
| VCC | Power Supply | 3.3 V supply pin; decoupling required within 10 mm of pin per layout guidelines |
| GND | Ground Reference | Signal and power return; separate ground plane recommended for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Low-power 6T cell | Alpha-particle immune design ensures data integrity in radiation-prone environments like industrial automation |
| Automatic CE power-down | Reduces ICC to ≤5 µA without external control logic or clock gating |
| Tristate-compatible I/O | Simultaneous OE/CE/WE control eliminates bus contention in multi-device systems |
| TSOP-I and SOJ package options | 28-pin footprint allows drop-in replacement between surface-mount and through-hole assembly lines |
| Single 3.3 V supply | Eliminates need for dual-rail regulators or level shifters in 3.3 V system designs |
Applications
| FPGA Configuration Storage | Industrial PLC Data Buffer |
|---|---|
Use Scenario: Stores bitstream for Xilinx Spartan or Intel MAX II FPGAs during cold boot or reconfiguration. IC Role / Device Role / Timing Role: Nonvolatile shadow RAM holding configuration data; accessed sequentially at startup with strict tAA ≤12 ns timing. Use Value: Eliminates reliance on external serial PROMs and reduces boot time by enabling parallel loading. | Use Scenario: Buffers sensor readings from analog input modules before batch transmission to HMI or SCADA. IC Role / Device Role / Timing Role: High-speed scratchpad memory; supports burst writes at 83 MHz effective rate via CE/OE strobing. Use Value: Prevents data loss during transient communication outages with guaranteed 2.0 V retention voltage. |
| Automotive Infotainment UI Cache | Medical Device Real-Time Log |
Use Scenario: Caches GUI assets (icons, fonts, menu trees) in head-unit displays operating across –40 °C to +85 °C. IC Role / Device Role / Timing Role: Low-latency display memory; interfaces directly to ARM Cortex-A53 AXI bus via glueless 8-bit interface. Use Value: Maintains UI responsiveness under thermal stress with <5 µA ISB2 standby current at full temperature range. | Use Scenario: Captures ECG waveform samples at 1 kHz for 30-second emergency buffer in portable monitors. IC Role / Device Role / Timing Role: Deterministic write buffer; accepts back-to-back writes with tWC = 12 ns and tSD = 7 ns setup. Use Value: Ensures zero-data-loss recording during power fail events using 2.0 V data retention mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static RAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS61LV25616AL-12TQLI | 32 K × 16 organization, 12 ns access, 3.3 V, 44-pin TSOP-II | Wider data bus requires PCB redesign; higher density but incompatible pinout | Select only if system requires 16-bit data path and board revision is feasible |
| AS6C4008-12ZIN | 512 Kbit (64 K × 8), 12 ns, 3.3 V, 28-pin TSOP-I, higher ICC active current (70 mA) | Same footprint and voltage; larger capacity suits extended buffer needs | Prefer when >256 Kbit capacity is needed and active power budget allows +15 mA |
Compared with IS61LV25616AL-12TQLI and AS6C4008-12ZIN, the CY7C1399BNL-12ZXC offers exact 28-pin TSOP-I compatibility, lowest standby current (≤5 µA), and proven industrial temperature reliability - making it optimal for footprint-constrained, low-power, drop-in replacements.
Availability
CY7C1399BNL-12ZXC is available at Aetrix Electronics and suitable for industrial PLC data buffering, FPGA configuration storage, and automotive infotainment UI caching requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for CY7C1399BNL-12ZXC 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 markets.
The CY7C1399BN series targets cost-sensitive, low-power embedded systems needing deterministic SRAM performance without complex power sequencing or external refresh circuitry.
FAQ
What is the minimum VCC required to retain data in CY7C1399BNL-12ZXC?
The device guarantees data retention down to VCC = 2.0 V, as specified in the Data Retention Characteristics table. At this voltage, ICCDR remains ≤20 µA, and no external hold signal is needed - retention is automatic upon CE deassertion and VCC decay below operational threshold.
Does CY7C1399BNL-12ZXC require an external clock or refresh circuit?
No. It is a fully static RAM with no clock input and zero refresh requirement. Internal 6T cells retain data indefinitely as long as VCC ≥2.0 V and CE is held HIGH during retention mode. All timing is asynchronous and controlled solely by CE, OE, and WE edges.
Can CY7C1399BNL-12ZXC be used with 5 V logic interfaces?
No. Its absolute maximum input voltage is VCC + 0.5 V, and VCC is strictly 3.3 V ±300 mV. Direct connection to 5 V buses risks permanent damage. Level translation (e.g., TXB0108) is mandatory for mixed-voltage systems.
What is the difference between ISB1 and ISB2 standby current specifications?
ISB1 applies when inputs use TTL thresholds (VIH ≥2.0 V), yielding ≤5 mA typical. ISB2 applies under CMOS thresholds (VIH ≥VCC – 0.3 V), yielding ≤5 µA typical. Designers must match input driver types to the appropriate spec - CMOS drivers achieve 1000× lower standby power.
CY7C1399BNL-12ZXC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 28-TSSOP (0.465", 11.80mm Width)
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Volatile
- Memory Format:
- SRAM
- Technology:
- SRAM - Asynchronous
- Memory Size:
- 256Kbit
- Memory Organization:
- 32K x 8
- Memory Interface:
- Parallel
- Clock Frequency:
- -
- Write Cycle Time - Word, Page:
- 12ns
- Access Time:
- 12 ns
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSOP I
CY7C1399BNL-12ZXC FAQ
1.How can I place an order for CY7C1399BNL-12ZXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C1399BNL-12ZXC 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 CY7C1399BNL-12ZXC reliable?
The price and inventory of CY7C1399BNL-12ZXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C1399BNL-12ZXC is usually 5 days.
3.What payment methods are accepted for CY7C1399BNL-12ZXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C1399BNL-12ZXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C1399BNL-12ZXC?
CY7C1399BNL-12ZXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C1399BNL-12ZXC 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 CY7C1399BNL-12ZXC?
For technical support, including CY7C1399BNL-12ZXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C1399BNL-12ZXC requirements.
6.How does Aetrix verify that CY7C1399BNL-12ZXC is sourced from the original manufacturer or authorized distributors?
All CY7C1399BNL-12ZXC 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 CY7C1399BNL-12ZXC meets industry standards.
7.What is the process for return or replacement of CY7C1399BNL-12ZXC?
All CY7C1399BNL-12ZXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C1399BNL-12ZXC, 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 CY7C1399BNL-12ZXC part is unused and in its original packaging.
Return procedure for CY7C1399BNL-12ZXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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