
The CY7C1329-100AC is a high-speed synchronous SRAM designed for efficient data handling. With a 133 MHz clock speed and 4.2 ns access time, it delivers fast and reliable performance. It supports both linear and interleaved burst sequences, making it compatible with processors like Pentium and i486. The device features on-chip burst counters, allowing smooth address advancement during burst operations.
For writing, it includes Byte Write capability, controlled through BWE and BW[3:0] signals, ensuring precise data storage. The synchronous self-timed Write mechanism simplifies operations, and three synchronous Chip Selects (CE1, CE2, CE3) allow flexible memory access. The OE signal ensures proper output control, preventing conflicts.
Ideal for cache memory and high-speed computing, this SRAM enhances system performance. Bulk buyers can contact us for special pricing and large orders.

This is a pinout diagram for the CY7C1329 memory chip. It shows the 100 pins of the chip and their functions. The pins are arranged around the rectangular chip, with labels indicating their roles.
The CY7C1329-100AC supports a 133 MHz bus, ensuring smooth and efficient data transfers with zero wait states. This allows your system to process data continuously without delays, making it well-suited for high-speed computing. It works seamlessly with Pentium and PowerPC processors, providing reliable compatibility with advanced systems.
All synchronous inputs and outputs are processed through input and output registers controlled by the rising edge of the clock. This design stabilizes data flow and enhances performance, making it ideal for pipelined operations where data is managed in consecutive steps without disruption.
With a 64K x 32 common I/O structure, this device supports both read and write operations through a shared data path. This simplifies memory integration, reducing complexity while maintaining fast and reliable performance.
The CY7C1329-100AC operates on a single 3.3V power supply, reducing power consumption while ensuring a stable voltage for reliable operation. This makes it suitable for applications that require both performance and efficiency.
Speed is a defining feature of this SRAM. It delivers 4.2 ns access time at 133 MHz and 5.5 ns at 100 MHz, allowing rapid data retrieval and storage. This quick response time is critical for applications that demand fast memory access.
The integrated burst counter supports both Intel Pentium interleaved burst sequences and linear burst sequences, offering flexibility in data handling. The burst sequence is determined by the MODE input, making it adaptable to different system requirements.
The CY7C1329-100AC includes dedicated signals for addressing. The Processor Address Strobe (ADSP) allows processor-initiated access, while the Controller Address Strobe (ADSC) enables memory controller-initiated access. These independent address strobes improve memory efficiency by allowing multiple components to manage read and write operations without interfering with each other.
Writing data is simplified with a self-timed write mechanism, eliminating the need for complex timing control. This allows the SRAM to handle write operations automatically, improving performance while reducing the risk of timing errors.
The Output Enable (OE) signal provides an asynchronous method to control data output. When OE is deasserted (HIGH), the data outputs switch to three-state mode, preventing conflicts on the data bus. This ensures that only one component drives the bus at a time, improving system stability.
The CY7C1329-100AC follows the JEDEC-standard 100-lead TQFP pinout, ensuring compatibility with a wide range of systems. This standardized design allows for easier integration into existing hardware without the need for custom configurations.
To help reduce power consumption, the CY7C1329-100AC includes a “ZZ” Sleep Mode, which puts the device into a low-power state when not in use. The Stop Clock option allows you to pause clock signals when memory access is not required, further reducing energy use. These features improve energy efficiency while maintaining high-speed performance.
Technical Specifications of Infineon Technologies, CY7C1329-100AC.
| Product Attribute | Attribute Value |
| Manufacturer | Infineon Technologies |
| Write Cycle Time | - |
| Voltage - Supply | 3.15V ~ 3.6V |
| Technology | SRAM - Synchronous, SDR |
| Supplier Device Package | 100-TQFP (14x20) |
| Series | - |
| Package / Case | 100-LQFP |
| Package | Bag |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount |
| Memory Type | Volatile |
| Memory Size | 2Mbit |
| Memory Organization | 64K x 32 |
| Memory Interface | Parallel |
| Memory Format | SRAM |
| Clock Frequency | 100 MHz |
| Base Product Number | CY7C1329 |
| Access Time | 5.5 ns |

The logic block diagram of the CY7C1329-100AC shows how the memory chip processes data. It starts with address inputs (A0–A18) that go into an address register, which helps locate where data is stored. A burst counter works alongside to manage continuous data transfers.
Control signals like GW (Global Write), BW (Byte Write), and WE (Write Enable) determine whether the chip should read or write data. These signals pass through logic gates before reaching the write and enable delay blocks, which help manage timing.
The 64K × 32 memory array is the core storage area, where data is written or read. Data flows through input registers when written and through output registers when read. The OE (Output Enable) and ZZ (Sleep Control) signals help manage power and control data output.
This setup ensures smooth data handling, proper memory access, and efficient read/write operations.
The CY7C1329-100AC is designed for high-performance computing, where fast data access is needed to keep up with demanding workloads. Its 133 MHz clock speed and 4.2 ns access time make it an excellent choice for processors, cache memory, and high-speed data processing systems. It helps reduce latency and ensures smooth operation in performance-driven applications.
Networking devices require fast and reliable memory to handle data traffic efficiently. The CY7C1329-100AC is used in routers, switches, and network storage systems, where quick memory access improves data transmission and processing. Its burst mode capability allows it to handle multiple data requests efficiently, making it ideal for high-bandwidth network environments.
Telecommunication infrastructure depends on fast, consistent data storage and retrieval to manage signals, voice transmission, and data exchange. The CY7C1329-100AC is widely used in base stations, signal processing units, and digital communication equipment, where low-latency memory enhances system responsiveness and reliability.
Embedded applications require compact, high-speed memory solutions that support smooth real-time processing. The CY7C1329-100AC is used in industrial automation, automotive electronics, and smart devices, ensuring stable operation and efficient data handling. Its low-power design and high-speed capabilities make it suitable for performance-focused embedded applications.
Efficient data storage is a key requirement in many systems, and the CY7C1329-100AC plays a crucial role in cache memory, RAID controllers, and SSD buffers. Its fast read and write speeds ensure quick data retrieval, improving system responsiveness in storage-intensive environments.

The outline dimensions of the CY7C1329-100AC show the physical size and shape of the chip. The measurements are in millimeters, ensuring accuracy when designing circuits.
The diagram provides three views: top, side, and a detailed close-up. The top view shows the length and width, which are around 21 mm by 16 mm, with small variations allowed. The side view highlights the thickness and pin height, ensuring proper alignment when mounting the chip. The detailed section (Detail A) focuses on the pins, showing their spacing, curvature, and how they connect to the board.
These measurements help in designing circuit boards, ensuring the chip fits correctly and connects properly.
• Rapid data access speeds improve overall system performance
• Synchronous operation supports high-bandwidth applications
• Low-voltage design helps reduce power consumption
• User-selectable burst modes provide flexibility for different systems
• Fully registered inputs and outputs ensure stable data processing
• Wide operating temperature range allows use in different environments
• Requires precise timing control for proper operation
• Common I/O structure may limit simultaneous read and write operations
• Higher speed variants may generate more heat, requiring proper cooling
• JEDEC-standard pinout may not fit all custom PCB layouts
• Limited to 3.3V operation, which may not be compatible with lower voltage systems
| Part Number | Manufacturer | Key Features | Use Case/Notes |
| CY7C1327G-133AXI | Infineon Technologies | 4.5Mbit synchronous SRAM with a 256K x 18 organization. Faster access time of 4 ns and higher clock frequency of 133 MHz. Wide operating temperature (-40°C ~ 85°C). | Designed for high-performance systems requiring faster data processing. |
| CY7C1334-50AC | Cypress Semiconductor | 2Mbit synchronous SRAM with a 64K x 32 organization. Lower clock speed (50 MHz) and slower access time (10 ns). | Best suited for applications that don’t require ultra-fast memory speeds. |
| CY7C1325G-133AXC | Infineon Technologies | 4.5Mbit synchronous SRAM with a 256K x 18 organization. Operates at 133 MHz with a 6.5 ns access time. Surface mount, 100-TQFP package. | Good for industrial applications needing large, high-speed memory. |
Looking for a high-speed memory solution? The CY7C1329-100AC is a great choice for handling memory-heavy tasks. It delivers fast performance and reliable operation, making it ideal for systems that need stable and efficient memory.
Even though this model is discontinued, its well-tested design still works well for older systems that require its specific features. Its power-efficient build helps reduce energy costs while maintaining smooth operation.
At allelcoelec.com, we offer the CY7C1329-100AC at competitive prices, ensuring you get a dependable product for your needs. Whether you're replacing a failed component or working on a legacy system, this memory chip provides a proven solution.
Browse our stock today and secure the CY7C1329-100AC while supplies last. If you have any questions, our team is here to help you find the right match for your project.
Infineon Technologies is a leading company known for developing high-quality semiconductor solutions. You can find their products in many industries, from computing and networking to automotive and industrial applications. They focus on creating reliable, energy-efficient technology that helps improve performance and efficiency in electronic systems. With a strong reputation for innovation, Infineon continues to provide advanced memory solutions like the CY7C1329-100AC, ensuring smooth and high-speed operation in various applications.
The CY7C1329-100AC is a high-speed SRAM that delivers reliable performance for memory-intensive tasks. It supports fast data access, flexible burst modes, and efficient power usage, making it a solid choice for older systems that still rely on its features. Even though it's discontinued, it remains a great option for legacy applications. If you're looking for a dependable memory solution, check out our stock at allelcoelec.com while supplies last.
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The CY7C1329-100AC is a high-speed SRAM commonly used in computing, networking, telecommunications, and embedded systems. It helps store and retrieve data quickly, making it useful for cache memory and high-performance applications.
Yes, it supports both linear and interleaved burst sequences, allowing fast and continuous data transfers without delays. This helps improve performance in systems that require quick memory access.
It runs on a 3.3V power supply, which ensures stable performance while keeping power consumption low.
Although it is no longer in production, you can still find it at allelcoelec.com, where we stock reliable memory solutions for legacy systems.
If you need large quantities, visit allelcoelec.com and contact our team for special pricing and availability.
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