Infineon Technologies CY7C1460KV33-167AXC

Overview

CY7C1460KV33 from Cypress Semiconductor is a 36-Mbit synchronous pipelined SRAM with NoBL™ architecture and on-chip ECC, configured as 1M × 36 or 2M × 18. It supports zero-wait-state 167-MHz bus operation (3.4 ns access), features fully registered I/O, byte-write capability, and 3.3-V core/2.5-V or 3.3-V I/O supply. Used in high-throughput network packet buffering and telecom line-card data path memory.

For engineers reviewing the CY7C1460KV33 datasheet, CY7C1460KV33 pinout, CY7C1460KV33 application, or CY7C1460KV33 equivalent, key selection criteria include burst order (linear/interleaved via MODE pin), ECC correction capability, synchronous self-timed write timing, clock enable (CEN) behavior, and TQFP-100 vs. FBGA-165 package compatibility.

Technical Context

This SRAM implements a fully synchronous, pipelined read/write interface with all inputs and outputs registered on the rising edge of CLK, qualified by CEN. Internal address counter advancement is controlled by ADV/LD, enabling burst sequences without external address generation.

NoBL™ logic eliminates bus turnaround latency, allowing true back-to-back reads and writes at full clock rate. On-chip ECC encodes/decodes parity across DQa–DQd and DQPa–DQPd lines, correcting single-bit errors and detecting double-bit errors per 36-bit word.

Key Specifications

Pinout & Package

Package: 100-pin JEDEC-standard Pb-free TQFP (14 mm × 14 mm, 0.5 mm pitch). Pin-compatible with CY7C1460KVE33 and CY7C1462KVE33 in same footprint.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous pipelined SRAM applications.

Compared with CY7C1460KVE33, the KV33 offers identical performance with non-Pb-free finish; versus CY7C1462KVE33, it delivers full 36-bit ECC coverage and byte-select flexibility critical for modern 32/64-bit data paths - making it the preferred choice for new high-reliability designs.

Availability

CY7C1460KV33 is available at Aetrix Electronics and suitable for network packet buffering, telecom line card memory, and industrial PLC data logging requiring stable component supply across extended product lifecycles.

Supply support for CY7C1460KV33 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) designs high-performance memory and programmable solutions for industrial, automotive, and communications infrastructure.

CY7C1460KV33 belongs to the NoBL™ SRAM product line, engineered specifically for zero-latency, high-throughput data buffering in deterministic real-time systems where bus turnaround overhead must be eliminated.

FAQ

What is the function of the MODE pin, and can it be changed dynamically?

The MODE pin selects burst address order: HIGH enables interleaved burst, LOW enables linear burst. It is a strap pin intended for static configuration at power-up; changing its state during operation violates timing and may cause undefined burst address sequencing. The datasheet specifies MODE must remain stable during device operation.

How does the ZZ (sleep) mode affect data retention and wake-up timing?

In ZZ mode, the device enters deep sleep with ICC ≤ 50 µA while retaining all stored data. Wake-up occurs synchronously on the first valid CLK edge after ZZ is deasserted; no additional stabilization delay is required. The internal registers and memory array remain powered, ensuring immediate access upon exit.

Is the OE pin truly asynchronous, and how does it interact with write cycles?

OE is asynchronous in assertion (LOW), but masked during the data portion of write cycles, on first clock after deselection, and when device is deselected. This prevents bus contention by forcing tristate regardless of OE state during write data sampling - a hardware-enforced safety feature confirmed in the functional description and truth table.

Does the on-chip ECC cover both data and parity bits, and what error detection capability does it provide?

Yes - ECC operates across the full 36-bit data word plus four dedicated parity bits (DQPa–DQPd), forming a (40,36) Hamming code. It provides single-error correction (SEC) and double-error detection (DED) per 40-bit codeword, meeting JEDEC JESD8-12 requirements for soft error resilience in mission-critical applications.