Infineon Technologies CY7C1357C-100BZC

Overview

CY7C1357C-100BZC from Infineon Technologies (formerly Cypress) is a 9-Mbit synchronous flow-through SRAM with NoBL™ architecture, configured as 512K × 18, operating at 100 MHz with 7.5 ns clock-to-output access time, 3.3 V core/I/O supply, and JEDEC-standard 100-pin TQFP package - deployed in high-speed packet buffering for network switches.

For engineers reviewing the CY7C1357C-100BZC datasheet, CY7C1357C-100BZC pinout, CY7C1357C-100BZC application, or CY7C1357C-100BZC equivalent, key selection criteria include burst mode support (linear/interleaved), synchronous self-timed writes, three chip enables for depth expansion, ZZ sleep mode power control, and JTAG boundary-scan testability.

Technical Context

The device implements a synchronous flow-through architecture where all inputs are registered on the rising edge of CLK, and output data is driven without wait states between consecutive read/write operations. Its NoBL™ logic eliminates bus dead cycles by enabling true back-to-back transfers with data valid every clock cycle.

It supports both linear and interleaved burst orders, uses internal self-timed write circuitry to guarantee data coherency, and features asynchronous OE with synchronous tri-state control during write data phases to prevent bus contention.

Key Specifications

Pinout & Package

Package: 100-pin TQFP (14 × 20 × 1.4 mm), RoHS-compliant, Pb-free, JEDEC-standard footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AS7C36256B-10TIN and IS61WV102418BLL-10TLI, CY7C1357C-100BZC uniquely delivers zero-wait-state throughput, integrated JTAG, and ZZ-mode power management - making it optimal for latency-sensitive, testable, and thermally constrained embedded systems.

Availability

CY7C1357C-100BZC is available at Aetrix Electronics and suitable for network infrastructure, wireless baseband, and industrial motion control applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for CY7C1357C-100BZC 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

Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and high-performance memory solutions.

CY7C1357C belongs to Infineon's legacy Cypress synchronous SRAM product line, engineered for deterministic, low-latency data buffering in telecom, networking, and real-time control systems.

FAQ

What is the difference between CY7C1355C and CY7C1357C?

CY7C1355C is configured as 256K × 36 (9 Mbit), while CY7C1357C is 512K × 18 (also 9 Mbit). They share identical NoBL™ architecture, timing, and pinout in 100-pin TQFP, but differ in internal organization and byte-write group mapping - CY7C1357C uses DQPA/DQPB for its 18-bit interface and omits DQPC/DQPD pins in that package variant.

Does CY7C1357C-100BZC support both linear and interleaved burst modes?

Yes - MODE pin selects burst order: MODE = HIGH enables linear burst; MODE = LOW enables interleaved burst. This matches standard CPU cache line fetch patterns and is validated in the device's AC timing specifications and burst address tables (pages 10–11 of datasheet Rev. *N).

Can the ZZ (sleep) mode be used during active clock operation?

No - ZZ mode must be asserted only when CLK is stopped or CEN is deasserted. Activating ZZ while CLK is running and CEN is active violates the device's power sequencing requirements and may cause data corruption or excessive current draw per Section "Sleep Mode" (page 10).

Is JTAG boundary scan enabled by default on CY7C1357C-100BZC?

Yes - IEEE 1149.1 boundary scan is factory-enabled and requires no configuration. TCK, TMS, TDI, and TDO pins are dedicated and functional upon power-up; disabling requires writing a specific instruction via TAP controller - detailed in Section "Disabling the JTAG Feature" (page 13).