CYPRESS CY7C0853AV-100BBI
- 9Mbit (256K × 36) FLEx36™ synchronous dual-port SRAM — highest density in the CY7C085xAV family
- 100MHz clock frequency, 5ns access time, 3.3V supply, two fully independent simultaneous read/write ports
- 172-pin LBGA package (15×15mm), industrial temperature grade −40°C to +85°C
- Hardware semaphore, busy flag, and interrupt logic for deterministic inter-processor synchronization
- Obsolete lifecycle status — production programs must secure remaining stock; verified supply available at Sparkle Electronics
Cypress Semiconductor (now Infineon Technologies) developed the FLEx36™ synchronous dual-port SRAM family as a scalable shared memory architecture spanning four density points — 32K, 64K, 128K, and 256K rows at 36-bit width — under a unified pin-compatible interface. The CY7C0853AV-100BBI, the highest-density member of the AV-generation FLEx36™ family at 9Mbit (256K × 36), is available from stock at Sparkle Electronics. This part carries an obsolete lifecycle designation from Infineon, meaning production has been discontinued and remaining supply is finite — a procurement condition that demands proactive action from program managers and procurement engineers responsible for ongoing production schedules, repair depot inventories, or long-term platform sustainment. Sparkle Electronics maintains verified stock of the CY7C0853AV-100BBI and can support both immediate spot procurement and structured forward-buy arrangements for programs requiring supply continuity beyond current market availability windows.
The CY7C0853AV-100BBI provides 9Mbit of shared memory addressable as 256K × 36 bits, accessible simultaneously through two independent synchronous ports at 100MHz. The 36-bit data organization — 32 data bits plus 4 parity bits — directly supports 32-bit embedded processor architectures with hardware parity without external generation logic. The 172-pin LBGA package (15×15mm) delivers the density required for high-performance signal processing boards in radar and electronic warfare systems, avionics systems multi-processor compute platforms, and defense networking equipment where shared memory buffer depth directly determines system throughput capacity. For programs currently specifying or sourcing this part, lead time and confirmed lot availability are the critical procurement variables — both of which Sparkle Electronics can address with same-day response. Contact Sparkle Electronics immediately to confirm current stock levels and initiate an RFQ.
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Obsolete but Irreplaceable: Procuring CY7C0853AV-100BBI Before Stock Is Exhausted
The obsolete lifecycle designation on the CY7C0853AV-100BBI is the most operationally significant procurement parameter on this page. Infineon has discontinued production — no new manufacturing runs are planned, and the global supply of this part is finite and declining with every procurement event. Programs that have not yet secured forward inventory face an escalating risk: as remaining distributor stock is consumed by active procurement, pricing increases, lead times extend, and the counterfeit exposure risk in the open market rises proportionally. Procurement engineers searching for CY7C0853AV-100BBI in stock, Cypress FLEx36 9Mbit SRAM obsolete stock, CY7C0853AV-100BBI last-time buy, or CY7C0853AV-100BBI replacement and cross reference will find Sparkle Electronics maintains verified stock with full lot traceability documentation. Submit an inquiry immediately to confirm current quantity, pricing, and available documentation before stock position changes.
CY7C0853AV-100BBI vs. the FLEx36™ Family: Density and Speed Options
| Parameter | CY7C0853AV-100BBI | CY7C0852AV-133BBI | CY7C0851AV-133BBI |
|---|---|---|---|
| Availability | In Stock at Sparkle | Confirm with Sparkle | In Stock at Sparkle |
| Lifecycle | Obsolete | Active/Obsolete | Active |
| Memory Capacity | 9Mbit | 4Mbit | 2Mbit |
| Organization | 256K × 36 | 128K × 36 | 64K × 36 |
| Clock Frequency | 100MHz | 133MHz | 133MHz |
| Access Time | 5ns | 4.4ns | 4.4ns |
| Supply Voltage | 3.3V | 3.3V | 3.3V |
| Package | 172-LBGA (15×15) | 172-FBGA | FBGA |
| Temperature | −40°C to +85°C | −40°C to +85°C | −40°C to +85°C |
| Semaphore Logic | Yes | Yes | Yes |
| Parity Support | Yes (4 bits) | Yes (4 bits) | Yes (4 bits) |
The CY7C0853AV-100BBI provides four times the address depth of the CYPRESS CY7C0851AV-133BBI at the cost of a reduced maximum clock frequency (100MHz vs. 133MHz) and a 5ns access time vs. 4.4ns. For designs where 256K rows of shared memory are required and 100MHz operation is sufficient, the CY7C0853AV-100BBI is the highest-density FLEx36™ option available. For designs where 133MHz throughput is the primary constraint and 64K or 128K address depth is acceptable, the 133MHz-rated lower density variants remain the appropriate specification — and carry active lifecycle status in some package configurations.
FLEx36™ Architecture: Semaphore, Busy Flag, and Interrupt Logic
The CY7C0853AV-100BBI’s hardware semaphore register provides a hardware-enforced mutual exclusion mechanism accessible from both ports simultaneously. When either processor reads the semaphore, the hardware latches the requesting port’s ownership atomically — preventing the race condition that software-only semaphore implementations introduce in high-speed multi-processor designs. The busy flag output indicates when both ports simultaneously address the same memory location, triggering a one-cycle access suspension on the lower-priority port while the higher-priority port completes its cycle — a deterministic hardware collision resolution mechanism with no processor intervention required. An interrupt output on each port allows the remote port to signal the local processor directly, providing a hardware inter-processor notification mechanism that eliminates the polling overhead of software-based signaling across the shared memory boundary. For aerospace and defense multi-processor designs where deterministic inter-processor communication latency is a system requirement, these hardware features eliminate the software complexity and timing uncertainty that shared memory designs without dedicated arbitration logic impose. For broader memory and storage requirements across defense and industrial programs, Sparkle Electronics maintains inventory spanning the full spectrum of high-reliability memory components.
Frequently Asked Questions
What does CY7C0853AV-100BBI decode to?
CY7C = Cypress SRAM product family prefix; 0853 = FLEx36™ synchronous dual-port SRAM, 9Mbit (256K × 36) — highest density in the 085x family; AV = AV-generation 3.3V architecture revision; -100 = 100MHz clock frequency rating; BB = 172-pin LBGA ball grid array package (15×15mm); I = industrial temperature grade (−40°C to +85°C); tray packaging.
Where can I buy CY7C0853AV-100BBI in stock?
Sparkle Electronics maintains stock of the CY7C0853AV-100BBI. Given the obsolete lifecycle status, available quantity is finite — procurement teams with ongoing production requirements or sustainment obligations should contact Sparkle Electronics immediately to confirm current stock levels before initiating a formal RFQ. Contact our team for pricing, quantity, and lot documentation. Same-day response on qualified inquiries.
What is the obsolete lifecycle status and what does it mean for procurement?
Infineon (Cypress) has discontinued manufacturing of the CY7C0853AV-100BBI. No new production runs are planned. Remaining supply consists of existing distributor inventory only — once depleted, the part will no longer be available from authorized sources. For programs with ongoing production requirements, a last-time buy (LTB) to secure sufficient inventory for the program’s remaining production and spare parts demand is the standard risk mitigation approach. Sparkle Electronics can support structured LTB procurement with confirmed lot documentation and delivery scheduling.
What replacement or cross-reference options exist for CY7C0853AV-100BBI?
No direct pin-compatible replacement from an alternative manufacturer provides identical 9Mbit, 256K × 36, 100MHz dual-port SRAM in a 172-LBGA package. IDT (Renesas) 70V27L and related devices offer similar dual-port SRAM architecture at comparable densities but require pinout, timing, and software driver verification before substitution. For programs evaluating alternative sourcing or redesign options, Sparkle Electronics can provide cross-reference analysis and alternative component sourcing support. Contact our team with your specific design constraints and program timeline.
Is CY7C0853AV-100BBI compatible with the CY7C0853V-100BBI?
The CY7C0853AV and CY7C0853V are related but distinct revisions — the V suffix designates an earlier generation of the device with different internal architecture details. While the memory organization, package, and operating conditions may appear similar, direct substitution without datasheet parameter comparison and timing verification is not recommended. Sparkle Electronics can supply lot documentation confirming the exact revision and date codes of available stock. Contact us to confirm the specific variant and lot traceability before committing to a substitution decision.
What documentation is available with CY7C0853AV-100BBI procurement?
Sparkle Electronics provides packing documentation, lot traceability, and country of origin certification for CY7C0853AV-100BBI procurement. For programs requiring additional authenticity verification or component history documentation — particularly relevant given the obsolete status and associated counterfeit risk in the open market — our procurement team can advise on available lot history before order placement. Submit documentation requirements at inquiry stage to confirm scope. Contact us to initiate the documentation review process.
Sourcing CY7C0853AV-100BBI for a production program or repair depot before stock is exhausted? Sparkle Electronics maintains verified obsolete and hard-to-find Cypress SRAM inventory with full lot traceability and same-day response on RFQs. Submit an inquiry now — pricing, quantity, and documentation confirmed within 24 hours.
