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Infineon Technologies CY7C109B-15ZC
- Part No.:
- CY7C109B-15ZC
- Manufacturer:
- Infineon Technologies
- Category:
- Memory
- Package:
- 32-TFSOP (0.724", 18.40mm Width)
- Datasheet:
-
CY7C109B-15ZC.pdf
- Description:
- IC SRAM 1MBIT PARALLEL 32TSOP I
- Quantity:
- Payment:
- Shipping:
Inventory:3,920
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Product details
Overview
CY7C109B-15ZC from Cypress Semiconductor is a 128K × 8 (1,048,576-bit) high-speed CMOS static RAM in 32-pin TSOP Type I package, featuring 15 ns access time, 5 V ±10% supply, TTL-compatible I/O, and automatic CE-controlled power-down. It operates across commercial temperature range (0°C to +70°C) and supports memory expansion via dual chip enables (CE1 active LOW, CE2 active HIGH) and tri-state outputs - used in legacy industrial controllers, instrumentation buffers, and FPGA configuration storage.
For engineers reviewing the CY7C109B-15ZC datasheet, CY7C109B-15ZC pinout, CY7C109B-15ZC application, or CY7C109B-15ZC equivalent, key selection criteria include tAA = 15 ns read timing, ISB2 = 10 mA CMOS standby current, VCC = 5 V operation, and compatibility with 32-pin TSOP footprint for board-level replacement in space-constrained embedded systems.
Technical Context
The CY7C109B-15ZC implements a full asynchronous SRAM architecture with independent address decoding (A0–A16), eight bidirectional I/O lines (I/O0–I/O7), and dual enable logic enabling flexible memory mapping. Its CE1/CE2/OE/WE control scheme allows seamless integration into multi-chip memory banks without external gating logic.
Power management is handled through automatic CE-driven power-down: when CE1 is HIGH or CE2 is LOW, ICC drops to ≤10 mA (CMOS mode) while retaining data at VCC ≥ 2.0 V. All inputs meet TTL voltage thresholds (VIH = 2.2 V min, VIL = 0.8 V max), ensuring direct interfacing with 5 V microcontrollers and FPGAs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Organization | 131,072 × 8 bits - provides 128 KB byte-addressable storage with A0–A16 addressing |
| Access Time (tAA) | 15 ns - guarantees data valid within 15 ns of stable address and CE1/OE assertion |
| VCC Supply | 5 V ±10% - compatible with standard 5 V logic rails; no regulator required |
| Standby Current (ISB2) | 10 mA max - low quiescent draw during deselected state with CMOS input conditions |
| Data Retention Voltage | 2.0 V - retains stored data down to 2.0 V VCC, enabling battery-backed hold mode |
| Output Drive | TTL-compatible - VOH ≥ 2.4 V @ –4 mA, VOL ≤ 0.4 V @ 8 mA, eliminates level-shifter need |
| Package | 32-pin TSOP Type I - 0.5 mm pitch, surface-mount, JEDEC MO-165AA compliant footprint |
Pinout & Package
Package: 32-pin Thin Small Outline Package (TSOP Type I), 8.0 mm × 13.4 mm body, 0.5 mm lead pitch, gull-wing leads. Compliant with JEDEC MO-165AA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A16 | Address Inputs | 17-bit address bus supporting full 128K-word decode; no internal latching |
| I/O0–I/O7 | Bidirectional Data Bus | Tri-state CMOS I/O pins shared for read/write; high-impedance when CE/OE inactive or during write |
| CE1 | Chip Enable 1 | Active LOW primary chip select; device enabled only when CE1 = LOW AND CE2 = HIGH |
| CE2 | Chip Enable 2 | Active HIGH secondary chip select; enables hierarchical memory decoding with CE1 |
| OE | Output Enable | Active LOW read strobe; controls output buffer enable independently of CE/WE states |
| WE | Write Enable | Active LOW write strobe; initiates write cycle when CE1 = LOW, CE2 = HIGH, WE = LOW |
| VCC | Power Supply | +5 V supply pin; decoupling capacitor required within 10 mm of pin per layout guidelines |
| GND | Ground | Signal and power return; dedicated GND pin (Pin 16) minimizes noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| 15 ns Access Time | Enables direct interface with 66 MHz system buses without wait states in burst-read configurations |
| Dual Chip Enable Logic | Supports banked memory architectures using CE1/CE2 as row/column selects - reduces external decode logic count |
| Automatic Power-Down | Reduces ICC to ≤10 mA when deselected (CE1 HIGH or CE2 LOW), eliminating need for external sleep control |
| 2.0 V Data Retention | Permits use with backup batteries or supercapacitors for nonvolatile hold during main power loss |
| TTL-Compatible I/O | Direct connection to legacy 5 V microcontrollers (e.g., 8051, HC11) and CPLDs without level translation |
Applications
| Industrial PLC Data Buffer | FPGA Configuration Storage |
|---|---|
|
Use Scenario: Stores real-time I/O scan data and register values between PLC scan cycles in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Asynchronous data buffer with deterministic 15 ns read latency and CE-gated power-down during idle scans. Use Value: Eliminates wait states in ladder logic execution and reduces average system power by 32% during polling intervals. |
Use Scenario: Holds bitstream configuration for Xilinx Spartan-3 FPGAs during cold boot and reconfiguration sequences. IC Role / Device Role / Timing Role: Nonvolatile-configurable memory mapped to FPGA's parallel slave select interface with OE-synchronized reads. Use Value: Enables sub-100 ms FPGA startup time and supports field-upgradable bitstreams without external flash controller. |
| Legacy Test Equipment Memory | Medical Imaging Frame Buffer |
|
Use Scenario: Provides scratchpad memory for digital oscilloscopes and logic analyzers requiring fast waveform capture and replay. IC Role / Device Role / Timing Role: High-bandwidth write-through buffer accepting parallel trigger-aligned samples at up to 20 MB/s sustained rate. Use Value: Sustains 12.5 Msample/s acquisition with zero dropped frames due to tWC = 15 ns write cycle compliance. |
Use Scenario: Buffers uncompressed grayscale DICOM frames (1024×1024×8-bit) in portable ultrasound units before JPEG compression. IC Role / Device Role / Timing Role: Dual-port-capable SRAM accessed alternately by ADC interface (write) and DSP core (read) via CE1/CE2 arbitration. Use Value: Prevents frame tearing during real-time B-mode rendering by decoupling acquisition and processing clocks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar asynchronous SRAM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AS6C1008-15TIN | Same 128K × 8 organization, 15 ns tAA, but uses 3.3 V supply and LVCMOS I/O levels | Requires level-shifting for 5 V systems; not drop-in compatible with CY7C109B-15ZC | Select only if migrating to 3.3 V architecture and redesigning power delivery and I/O interfaces |
| IS61LV10248-15TLI | 15 ns tAA, 5 V supply, but packaged in 32-pin SOJ (400-mil) - different mechanical footprint and thermal profile | Compatible electrically but requires PCB pad redesign; SOJ offers better thermal dissipation than TSOP | Choose for thermal-limited environments where board-level airflow is constrained and SOJ mounting is acceptable |
Compared with AS6C1008-15TIN and IS61LV10248-15TLI, the CY7C109B-15ZC uniquely combines 5 V TTL compatibility, TSOP packaging for high-density layouts, and proven reliability in long-lifecycle industrial deployments - making it optimal for legacy system sustainment and cost-sensitive 5 V designs.
Availability
CY7C109B-15ZC is available at Aetrix Electronics and suitable for industrial PLC data buffering, FPGA configuration storage, and legacy test equipment memory requiring stable component supply and long-term obsolescence support.
Supply support for CY7C109B-15ZC 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 solutions for industrial, automotive, and communications markets.
The CY7C109B belongs to Cypress's legacy asynchronous SRAM product line, designed specifically for 5 V systems requiring deterministic timing, low-power standby, and drop-in compatibility with aging microprocessor buses.
FAQ
What is the maximum operating frequency supported by CY7C109B-15ZC?
The CY7C109B-15ZC does not operate on a clock signal - it is an asynchronous SRAM. Its maximum effective throughput is governed by tRC = 15 ns (read cycle time), enabling up to 66.7 MHz random-access bandwidth. Continuous burst reads may achieve higher average rates depending on address sequencing and bus protocol.
Can CY7C109B-15ZC be used with 3.3 V logic interfaces?
No - CY7C109B-15ZC requires 5 V ±10% VCC and features TTL-compatible input thresholds (VIH ≥ 2.2 V, VIL ≤ 0.8 V). Direct connection to 3.3 V logic risks violating VIH minimum under worst-case VCC tolerance and may cause unreliable reads. Level-shifting circuitry is mandatory for 3.3 V host interfaces.
Is there a lead-free version of CY7C109B-15ZC available?
Yes - the CY7C109B-15ZXC is the RoHS-compliant, lead-free variant of this part, sharing identical electrical specifications and TSOP Type I package dimensions. It is marked with "ZXC" suffix and conforms to JEDEC J-STD-020 moisture sensitivity level 3.
How does automatic power-down work during CE deassertion?
When CE1 goes HIGH or CE2 goes LOW, the device enters automatic power-down mode: internal arrays are isolated, precharge circuits halt, and ICC drops to ≤10 mA (ISB2). Data remains retained as long as VCC ≥ 2.0 V. No external control signal or command sequence is needed - behavior is purely hardware-driven by CE pin states.
CY7C109B-15ZC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 32-TFSOP (0.724", 18.40mm Width)
- Packaging:
- Bag
- 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-15ZC FAQ
1.How can I place an order for CY7C109B-15ZC through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C109B-15ZC 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-15ZC reliable?
The price and inventory of CY7C109B-15ZC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C109B-15ZC is usually 5 days.
3.What payment methods are accepted for CY7C109B-15ZC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C109B-15ZC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C109B-15ZC?
CY7C109B-15ZC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C109B-15ZC 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-15ZC?
For technical support, including CY7C109B-15ZC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C109B-15ZC requirements.
6.How does Aetrix verify that CY7C109B-15ZC is sourced from the original manufacturer or authorized distributors?
All CY7C109B-15ZC 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-15ZC meets industry standards.
7.What is the process for return or replacement of CY7C109B-15ZC?
All CY7C109B-15ZC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C109B-15ZC, 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-15ZC part is unused and in its original packaging.
Return procedure for CY7C109B-15ZC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C109B-15ZC Tags
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