Infineon Technologies CY7C1356C-200AXI

Overview

CY7C1356C-200AXI from Cypress Semiconductor is a 9-Mbit (512K × 18) synchronous pipelined SRAM with NoBL™ architecture, designed for high-throughput memory buffering in network packet processors and telecom line cards. It operates at 200 MHz with zero wait states, supports 3.3 V core supply and 2.5/3.3 V I/O, and delivers 3.2 ns clock-to-output access time in TQFP-100 package.

For engineers reviewing the CY7C1356C-200AXI datasheet, CY7C1356C-200AXI pinout, CY7C1356C-200AXI application, or CY7C1356C-200AXI equivalent, key selection criteria include burst order configuration (linear/interleaved via MODE pin), byte-write select granularity (BWa–BWb), synchronous self-timed write timing, and JTAG boundary-scan support for system-level testability.

Technical Context

The CY7C1356C-200AXI implements fully registered synchronous interfaces: all address, control, and data inputs are latched on the rising edge of CLK, and all outputs are driven from output registers synchronized to CLK. Its NoBL™ logic eliminates bus latency by enabling true back-to-back read/write operations without wait states.

Burst operation is configurable via the MODE strap pin (linear or interleaved), while write sequencing uses synchronous self-timed internal control-no external write pulse width constraints. Chip enable logic combines CE1 (active LOW), CE2 (active HIGH), and CE3 (active LOW) for flexible bank decoding in multi-SRAM systems.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 × 20 × 1.4 mm), RoHS-compliant, surface-mountable with standard reflow profile.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT72V255L15PF and IS61WV51218BLL-200TQLI, CY7C1356C-200AXI uniquely combines 200 MHz zero-wait-state operation, programmable burst order, JTAG testability, and ZZ sleep - making it the only choice for carrier-grade packet processing where deterministic latency, field testability, and thermal efficiency are co-constrained.

Availability

CY7C1356C-200AXI is available at Aetrix Electronics and suitable for telecom infrastructure, network processor design, and industrial real-time control applications requiring stable component supply across extended product lifecycles.

Supply support for CY7C1356C-200AXI 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 fabless semiconductor company specializing in high-performance memory, microcontrollers, and connectivity solutions for industrial and communications markets.

The CY7C1356C belongs to Cypress's NoBL™ SRAM product line, engineered specifically for deterministic, high-bandwidth memory interfacing in packet-switched and real-time signal processing systems.

FAQ

What is the function of the MODE pin on CY7C1356C-200AXI?

The MODE pin is a strap input that selects burst address order at power-up: pulled HIGH for interleaved burst (e.g., compatible with PowerPC processors), pulled LOW for linear burst (e.g., Intel XScale). It is sampled only at initialization and cannot be changed dynamically during operation. External pull-up/pull-down resistors must meet Cypress's recommended values (typically 4.7 kΩ) to ensure reliable boot-time configuration.

Can CY7C1356C-200AXI operate with 2.5 V I/O while using 3.3 V core supply?

Yes - VDDQ (I/O supply) is independently configurable for 2.5 V or 3.3 V, while VDD (core supply) remains fixed at 3.3 V. This allows direct interfacing with 2.5 V FPGAs or ASICs without level shifters. The device guarantees full AC/DC specifications across both VDDQ options, and separate VDDQ decoupling capacitors are required per Cypress layout guidelines.

How does the ZZ (sleep) mode reduce power consumption?

Asserting ZZ LOW places the device in deep sleep mode, reducing standby current to 40 mA (typical) regardless of clock frequency or I/O activity. During ZZ mode, all internal logic except wake-up circuitry is gated, and outputs enter high-impedance state. Exit time from ZZ is ≤100 ns, enabling rapid resumption of burst transfers - ideal for duty-cycled packet processing in energy-constrained base stations.

Is JTAG boundary scan supported on CY7C1356C-200AXI, and how is it enabled?

Yes - CY7C1356C-200AXI implements IEEE 1149.1 JTAG with dedicated TDI, TDO, TCK, and TMS pins. JTAG is always active and requires no enable signal; however, it is disabled if TMS is held HIGH for more than 100 µs after power-up. Boundary scan testing follows standard IR/DR sequences and supports full pin interconnect verification per the device's 100-pin TQFP boundary-scan chain definition.