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Infineon Technologies CY7C109BN-15ZXC
- Part No.:
- CY7C109BN-15ZXC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
CY7C109BN-15ZXC.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:2,370
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Product details
Overview
CY7C109BN-15ZXC from Cypress Semiconductor is a 128K × 8 (131,072 × 8) asynchronous CMOS static RAM with 15 ns access time, 5 V supply, TTL-compatible I/O, and automatic CE power-down. It operates in commercial temperature range (0°C to +70°C) and supports high-impedance tri-state outputs during deselect, write, or OE disable - used in embedded microcontroller data buffers and legacy industrial controller memory expansion.
For engineers reviewing the CY7C109BN-15ZXC datasheet, CY7C109BN-15ZXC pinout, CY7C109BN-15ZXC application, or CY7C109BN-15ZXC equivalent, key selection criteria include tAA = 15 ns read timing, ISB2 = 10 mA CMOS standby current, VCC = 5 V ±10%, and TSOP I (8×20 mm) Pb-free package compatibility with board-level space constraints and thermal management requirements.
Technical Context
This SRAM implements a full asynchronous interface with dual chip enables (CE1 active-low, CE2 active-high), separate write enable (WE), and output enable (OE), enabling flexible memory banking and interleaved access in multi-chip systems. Its 512 × 256 × 8 memory array uses CMOS sense amplifiers and input buffers for stable operation across voltage and temperature.
Power management is handled via automatic CE-driven power-down: when CE1 is high or CE2 is low, ICC drops to ISB2 = 10 mA (CMOS mode) or ISB1 = 30 mA (TTL mode); data retention at 2.0 V is guaranteed with tCDR = 0 ns and tR = 200 µs recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 131,072 words × 8 bits - provides 128 KB byte-addressable storage without external data bus widening |
| Access Time (tAA) | 15 ns max - determines minimum clock cycle for CPU or DMA read operations in real-time control loops |
| VCC Supply | 5 V ±10% - compatible with legacy 5 V logic families and eliminates need for level-shifting circuitry |
| Standby Current (ISB2) | 10 mA max at VCC = 5 V, CMOS inputs - enables low-power sleep modes in battery-backed systems |
| Data Retention Voltage | 2.0 V - allows memory contents to persist during brown-out or controlled power-down sequences |
| Output Drive | TTL-compatible: VOH ≥ 2.4 V @ –4 mA, VOL ≤ 0.4 V @ 8 mA - ensures direct interfacing with 74LS/74HC peripherals |
| Package | 32-pin TSOP Type I (8×20 mm), Pb-free - supports surface-mount reflow assembly and meets RoHS compliance requirements |
Pinout & Package
The CY7C109BN-15ZXC is housed in a 32-pin Thin Small Outline Package (TSOP Type I), 8 mm × 20 mm body, with gull-wing leads and lead pitch of 0.5 mm. Pin 1 is marked by a beveled corner or notch on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 131,072-word decoding; A16 is MSB for linear addressing |
| I/O0–I/O7 | Bidirectional Data Bus | 8-bit tri-state I/O lines shared for read and write; high-impedance when CE1 HIGH, CE2 LOW, OE HIGH, or WE LOW |
| CE1 | Active-Low Chip Enable | Primary selection signal; device enters standby if CE1 is HIGH regardless of CE2 state |
| CE2 | Active-High Chip Enable | Secondary enable; both CE1 LOW and CE2 HIGH required for active operation |
| OE | Active-Low Output Enable | Controls output drivers only; does not affect internal memory state or power mode |
| WE | Active-Low Write Enable | Initiates write cycle when CE1 LOW and CE2 HIGH; latches data on I/O0–I/O7 into addressed location |
| VCC | Power Supply | +5 V supply pin; decoupling capacitor placement near this pin is critical for noise immunity |
| GND | Ground Reference | Signal and power ground; must be connected to low-impedance PCB plane to minimize switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Dual CE architecture (CE1/CE2) | Enables seamless memory banking and hierarchical decode in multi-SRAM systems without external logic |
| Automatic CE power-down | Reduces ICC to 10 mA (CMOS) or 30 mA (TTL) without requiring external control signals or sequencing |
| 2.0 V data retention | Preserves memory contents during main supply interruption, supporting graceful shutdown and fast resume |
| TTL-compatible I/O levels | Eliminates need for bus transceivers when interfacing with legacy 5 V microcontrollers and peripheral ICs |
| Tri-state output control | Prevents bus contention during read/write transitions and supports shared data bus architectures |
Applications
| Industrial PLC Data Buffer | Legacy Microcontroller External RAM |
|---|---|
Use Scenario: Storing real-time I/O scan data and program variables in programmable logic controllers operating in factory environments. IC Role / Device Role / Timing Role: Asynchronous data buffer providing deterministic 15 ns read access for cyclic scan execution within 100 µs control cycles. Use Value: Enables deterministic response to sensor inputs and actuator commands without CPU wait states or cache coherency overhead. | Use Scenario: Expanding RAM capacity for 8-bit and 16-bit microcontrollers (e.g., 8051, Z80, 68000) in legacy instrumentation and telecom line cards. IC Role / Device Role / Timing Role: Byte-wide external memory mapped at fixed address space; accessed via MOVX or similar instructions with no glue logic. Use Value: Doubles available working RAM without modifying CPU clock or bus timing, preserving firmware compatibility and BOM stability. |
| Medical Diagnostic Equipment Frame Store | Automated Test Equipment (ATE) Pattern Memory |
Use Scenario: Capturing and holding digitized waveform frames (ECG, EEG) prior to DSP processing in portable diagnostic devices. IC Role / Device Role / Timing Role: High-reliability frame buffer with 2.0 V data retention during brief power interruptions caused by battery swaps. Use Value: Prevents loss of critical patient waveform data during hot-swap events, meeting IEC 62304 safety requirements. | Use Scenario: Storing test vectors and expected response patterns in boundary-scan and functional test systems requiring fast parallel access. IC Role / Device Role / Timing Role: Static pattern memory accessed synchronously by test controller FPGA at up to 66 MHz effective rate using burst reads. Use Value: Delivers consistent 15 ns access latency across temperature, eliminating timing margin uncertainty in production test floors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar asynchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISSI IS61LV102416L-15NLI | 128K × 16 organization, 3.3 V supply, 15 ns access, 44-pin TSOP II | Requires data bus width adaptation (16-bit vs. 8-bit) and voltage translation for 5 V systems | Select only if migrating to 3.3 V architecture and needing wider data path; not drop-in compatible |
| Cypress CY7C109BN-15VC | Same 128K × 8, 15 ns, 5 V specs but in 32-pin 400-mil SOJ package (not Pb-free) | SOJ footprint incompatible with TSOP layout; requires PCB redesign and different reflow profile | Choose only for through-hole prototyping or legacy SOJ-based designs where Pb-free is not mandated |
Compared with IS61LV102416L-15NLI and CY7C109BN-15VC, the CY7C109BN-15ZXC uniquely combines 5 V TTL compatibility, Pb-free TSOP I packaging, and exact 128K × 8 byte-width alignment - making it the sole option for RoHS-compliant upgrades of existing 5 V embedded systems without board revision.
Availability
CY7C109BN-15ZXC is available at Aetrix Electronics and suitable for industrial PLC data buffering, legacy microcontroller RAM expansion, medical diagnostic frame storage, and automated test equipment pattern memory requiring stable component supply across extended product lifecycles.
Supply support for CY7C109BN-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) is a U.S.-based semiconductor company specializing in memory, PSoC, and USB solutions for industrial, automotive, and consumer applications.
The CY7C109BN series belongs to Cypress' legacy asynchronous SRAM product line, designed specifically for reliable, pin-compatible memory upgrades in 5 V embedded systems where timing predictability and long-term supply assurance are critical.
FAQ
What is the maximum operating temperature range for CY7C109BN-15ZXC?
The CY7C109BN-15ZXC is specified for commercial operation from 0°C to +70°C. It is not rated for industrial (–40°C to +85°C) use; the industrial-grade variant is CY7C109BN-15VI, which uses the same SOJ package but differs in screening and qualification testing.
Does CY7C109BN-15ZXC support battery backup operation?
Yes - it guarantees data retention at VCC = 2.0 V with CE1 HIGH or CE2 LOW, enabling use with backup batteries or supercapacitors. Retention current is 150 µA max, and recovery time after power restoration is 200 µs, allowing rapid system restart without memory reload.
Can CY7C109BN-15ZXC be used with 3.3 V microcontrollers?
No - its inputs require VIH ≥ 2.2 V and VIL ≤ 0.8 V under 5 V operation, and outputs drive VOH ≥ 2.4 V only when loaded at –4 mA. Direct interface with 3.3 V logic risks marginal noise margins and violates absolute maximum ratings; level-shifting circuitry is required.
Is the TSOP I package of CY7C109BN-15ZXC RoHS compliant?
Yes - the "ZXC" suffix explicitly denotes Pb-free TSOP I packaging per JEDEC standard MO-153, with lead finish of matte tin and full compliance to EU RoHS Directive 2011/65/EU and China RoHS.
CY7C109BN-15ZXC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Tray
- 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
CY7C109BN-15ZXC FAQ
1.How can I place an order for CY7C109BN-15ZXC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C109BN-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 CY7C109BN-15ZXC reliable?
The price and inventory of CY7C109BN-15ZXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C109BN-15ZXC is usually 5 days.
3.What payment methods are accepted for CY7C109BN-15ZXC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C109BN-15ZXC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C109BN-15ZXC?
CY7C109BN-15ZXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C109BN-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 CY7C109BN-15ZXC?
For technical support, including CY7C109BN-15ZXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C109BN-15ZXC requirements.
6.How does Aetrix verify that CY7C109BN-15ZXC is sourced from the original manufacturer or authorized distributors?
All CY7C109BN-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 CY7C109BN-15ZXC meets industry standards.
7.What is the process for return or replacement of CY7C109BN-15ZXC?
All CY7C109BN-15ZXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C109BN-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 CY7C109BN-15ZXC part is unused and in its original packaging.
Return procedure for CY7C109BN-15ZXC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C109BN-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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AT24C02C-SSHM-T
Microchip Technology
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Microchip Technology
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M24C02-FMC6TG
STMicroelectronics
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Microchip Technology
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Microchip Technology
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Microchip Technology
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Microchip Technology
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Microchip Technology
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