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Infineon Technologies CY7C109B-15ZXCT
- Part No.:
- CY7C109B-15ZXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
CY7C109B-15ZXCT.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:1,986
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Product details
Overview
CY7C109B-15ZXCT from Cypress Semiconductor is a 128K × 8 (1,048,576-bit) high-speed CMOS static RAM with 15 ns access time, TTL-compatible I/O, dual chip enable (CE1 active-low, CE2 active-high), and automatic power-down when deselected. It operates at 5V ±10% over commercial temperature range (0°C to +70°C) and is used in embedded controllers, industrial PLCs, and legacy communication interface buffers requiring deterministic, non-volatile data retention during low-power states.
For engineers reviewing the CY7C109B-15ZXCT datasheet, CY7C109B-15ZXCT pinout, CY7C109B-15ZXCT application, or CY7C109B-15ZXCT equivalent, key selection criteria include tAA = 15 ns read timing, ISB2 = 10 mA CMOS standby current, VCC = 5V operation, and compatibility with 32-pin TSOP Type I (Pb-free) packaging for space-constrained PCB layouts.
Technical Context
This SRAM implements a fully decoded 17-bit address bus (A0–A16) supporting 131,072 word locations, with tri-state bidirectional I/O0–I/O7 pins controlled by independent CE1, CE2, OE, and WE logic. Its dual CE architecture enables seamless memory expansion without external gating logic.
The device uses CMOS process technology to achieve 11 mW max standby power (L version) and 2.0V data retention voltage, entering automatic power-down when CE1 is HIGH or CE2 is LOW - a feature critical for battery-backed systems where supply voltage may sag below nominal levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 128K × 8 (131,072 words × 8 bits); supports byte-wide data path without external multiplexing |
| Access Time (tAA) | 15 ns maximum; guarantees valid data on I/O pins within 15 ns of stable address and CE1/OE assertion |
| Supply Voltage | 5V ±10%; compatible with standard TTL/CMOS logic rails and eliminates need for dedicated LDO regulation |
| Standby Current (ISB2) | 10 mA maximum at VCC = 5.5V; enables low-quiescent monitoring in always-on subsystems |
| Data Retention Voltage | 2.0V minimum; preserves stored contents during brown-out or backup-battery operation |
| Package | 32-pin TSOP Type I (Pb-free); 0.5 mm pitch, 11.8 × 10.0 mm footprint optimized for automated SMT assembly |
| Operating Temperature | 0°C to +70°C (Commercial); validated for use in office equipment, test instruments, and non-automotive industrial enclosures |
Pinout & Package
Package: 32-pin Thin Small Outline Package (TSOP) Type I, Pb-free, body size 11.8 mm × 10.0 mm, 0.5 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit unidirectional address bus; fully decoded to select one of 131,072 memory locations |
| I/O0–I/O7 | Bidirectional Data Bus | Tri-state CMOS I/O pins shared for read and write; high-impedance when CE1 HIGH, CE2 LOW, OE HIGH, or during write |
| CE1 | Chip Enable 1 | Active-low primary chip select; must be LOW with CE2 HIGH to enable memory access |
| CE2 | Chip Enable 2 | Active-high secondary chip select; provides flexible decoding for multi-chip memory banks |
| OE | Output Enable | Active-low control for output drivers; disables outputs (high-Z) independently of CE state |
| WE | Write Enable | Active-low signal initiating write cycle; latches data from I/O pins into addressed location when CE1/CE2 enabled |
| VCC | Power Supply | +5V ±10% main supply; powers core logic and I/O buffers |
| GND | Ground | Reference return path for all signals and internal circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Dual Chip Enable Interface | CE1 (active-low) and CE2 (active-high) allow hierarchical memory mapping without external logic gates |
| Automatic Power-Down | Enters low-current standby (ISB2 ≤ 10 mA) when deselected - no external control required |
| TTL-Compatible I/O | VIH = 2.2 V, VOL = 0.4 V, VOH = 2.4 V ensures direct interfacing with 5V microcontrollers and FPGAs |
| 2.0V Data Retention | Maintains stored data down to 2.0V VCC, enabling reliable operation during power failover or battery backup |
| Tri-State Output Drivers | I/O pins enter high-impedance state during deselect, output disable, or write - prevents bus contention |
Applications
| Industrial PLC Data Buffers | Legacy Communication Interface Memory |
|---|---|
Use Scenario: Storing real-time I/O status and configuration registers in programmable logic controllers with cyclic scan execution. IC Role / Device Role / Timing Role: Byte-wide SRAM providing zero-wait-state read/write access for CPU during 10–100 ms scan cycles. Use Value: 15 ns tAA ensures deterministic response within tight scan timing budgets; 2.0V retention supports graceful shutdown during AC loss. | Use Scenario: Acting as transmit/receive FIFO buffer between UARTs and modems in RS-232/RS-485 protocol converters. IC Role / Device Role / Timing Role: Dual-port accessible memory holding packetized serial data before framing or after de-framing. Use Value: Tri-state I/O and independent CE/OE/WE enable clean integration with multiple bus masters; 32-pin TSOP fits compact telecom module footprints. |
| Embedded Controller Boot Memory | Test Equipment Configuration Storage |
Use Scenario: Holding bootloader code and runtime variables in microcontroller-based instrumentation where flash reprogramming is infrequent. IC Role / Device Role / Timing Role: Non-volatile shadow RAM mapped into CPU address space for fast initialization and runtime scratchpad use. Use Value: 5V operation matches MCU core voltage; 10 mA ISB2 minimizes idle power in battery-operated handheld testers. | Use Scenario: Storing calibration coefficients, user preferences, and instrument setup profiles in benchtop DMMs and oscilloscopes. IC Role / Device Role / Timing Role: Static storage accessed only during power-up or menu navigation - no refresh or wear-out concerns. Use Value: 128K × 8 capacity accommodates >1000 calibration points per channel; Pb-free TSOP meets RoHS compliance for lab-grade equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AS6C1008-15TIN | Same 128K × 8 organization, 15 ns access, but uses single active-low CE and requires external pull-ups on I/O for high-Z control | Lacks dual CE architecture; less flexible for banked memory systems | Select when board layout already uses single-CE topology and cost sensitivity outweighs expansion flexibility |
| IS61LV102416-15TQLI | 1M × 16 organization, 15 ns, 3.3V-only supply; incompatible voltage and data width without level-shifting | Requires redesign of data bus and power delivery; not drop-in replaceable | Consider only for new designs targeting higher density and lower voltage, not for CY7C109B-15ZXCT replacement |
Compared with AS6C1008-15TIN and IS61LV102416-15TQLI, CY7C109B-15ZXCT offers unique dual CE support and 5V compatibility - essential for maintaining legacy system timing and interconnect integrity without redesign.
Availability
CY7C109B-15ZXCT is available at Aetrix Electronics and suitable for industrial PLCs, legacy communication interface modules, and embedded controller boot memory requiring stable component supply across extended production lifecycles.
Supply support for CY7C109B-15ZXCT 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, microcontrollers, and programmable logic solutions for industrial and embedded markets.
The CY7C109B belongs to Cypress's legacy parallel SRAM product line, designed specifically for systems requiring pin-compatible upgrades from older NMOS or HMOS memories while delivering improved speed, power efficiency, and reliability.
FAQ
What is the maximum clock frequency supported by CY7C109B-15ZXCT?
CY7C109B-15ZXCT is an asynchronous SRAM and does not use a clock signal. Its performance is defined by access time (tAA = 15 ns) and cycle time (tRC = 15 ns), meaning it supports up to ~66.7 MHz effective random-access throughput when interfaced with a properly timed bus controller. No internal oscillator or clock input exists.
Can CY7C109B-15ZXCT operate at 3.3V?
No. CY7C109B-15ZXCT is specified only for 5V ±10% operation (4.5V to 5.5V). Applying 3.3V will result in undefined behavior, failure to meet timing specifications, and potential data corruption. For 3.3V systems, consider Cypress's later-generation low-voltage SRAMs such as the CY62167 series.
Does CY7C109B-15ZXCT require an external refresh circuit?
No. As a static RAM, CY7C109B-15ZXCT retains data indefinitely as long as power is applied and does not require periodic refresh cycles. This eliminates refresh overhead in microcontroller or FPGA designs and simplifies timing-critical applications like real-time data buffering.
Is the TSOP package of CY7C109B-15ZXCT RoHS-compliant?
Yes. The "X" suffix in CY7C109B-15ZXCT explicitly denotes Pb-free (RoHS-compliant) construction. The TSOP Type I package uses lead-free solder plating and complies with EU Directive 2011/65/EU, verified through Cypress's official material declarations and IPC-1752 reporting.
CY7C109B-15ZXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm 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:
- 128K x 8
- 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:
- 32-TSOP I
CY7C109B-15ZXCT FAQ
1.How can I place an order for CY7C109B-15ZXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C109B-15ZXCT 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 CY7C109B-15ZXCT reliable?
The price and inventory of CY7C109B-15ZXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C109B-15ZXCT is usually 5 days.
3.What payment methods are accepted for CY7C109B-15ZXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C109B-15ZXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C109B-15ZXCT?
CY7C109B-15ZXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C109B-15ZXCT 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 CY7C109B-15ZXCT?
For technical support, including CY7C109B-15ZXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C109B-15ZXCT requirements.
6.How does Aetrix verify that CY7C109B-15ZXCT is sourced from the original manufacturer or authorized distributors?
All CY7C109B-15ZXCT 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 CY7C109B-15ZXCT meets industry standards.
7.What is the process for return or replacement of CY7C109B-15ZXCT?
All CY7C109B-15ZXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C109B-15ZXCT, 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 CY7C109B-15ZXCT part is unused and in its original packaging.
Return procedure for CY7C109B-15ZXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C109B-15ZXCT Tags
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M24C02-WMN6TP
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AT21CS01-STUM10-T
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