Cypress Semiconductor Corp CY7C1363C-133AXC

Overview

CY7C1363C-133AXC from Infineon Technologies (formerly Cypress) is a 9-Mbit synchronous flow-through SRAM with 512K × 18 organization, designed for high-speed cache and buffer interfacing in Pentium-class microprocessor systems. It supports 133 MHz bus operation with 6.5 ns clock-to-output delay, operates on 3.3 V core supply (±5%/+10%), and features dual VDDQ options (2.5 V or 3.3 V) for I/O compatibility.

For engineers reviewing the CY7C1363C-133AXC datasheet, CY7C1363C-133AXC pinout, CY7C1363C-133AXC application, or CY7C1363C-133AXC equivalent, key selection criteria include burst sequence mode (interleaved/linear), chip enable configuration (3-CE TQFP), JTAG boundary scan support, and ZZ sleep mode timing compliance.

Technical Context

The device implements a synchronous, clock-driven architecture with positive-edge-triggered CLK controlling all address, data, and control inputs except OE and ZZ. A 2-bit on-chip burst counter captures the initial address and auto-increments for subsequent burst cycles, supporting Intel Pentium–compatible interleaved or linear sequences via the MODE pin.

Burst initiation is selectable between processor (ADSP) and controller (ADSC) address strobes, with address advancement governed by the ADV signal. Write operations are self-timed and synchronous, while output enable (OE) remains asynchronous-enabling precise output gating independent of clock phase.

Key Specifications

Pinout & Package

Package: Pb-free 100-pin TQFP (14 × 20 × 1.4 mm), 3-chip-enable variant (A version), RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS61WV51218BLL-133TQLI and AS7C351218A-133BIN, the CY7C1363C-133AXC uniquely combines JTAG testability, ZZ sleep mode, and hardware-selectable interleaved/linear burst modes - making it the only option qualified for certified industrial control and legacy x86 cache extension designs.

Availability

CY7C1363C-133AXC is available at Aetrix Electronics and suitable for high-reliability industrial control systems, automotive radar ECUs, network switching buffers, and legacy x86-compatible embedded computing platforms requiring stable component supply over extended product lifecycles.

Supply support for CY7C1363C-133AXC 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 acquired Cypress Semiconductor in 2020 and maintains full product continuity, technical support, and long-term supply commitment for the former Cypress SRAM portfolio.

This device belongs to the CY7C136x family of high-speed synchronous flow-through SRAMs, engineered specifically for cache and buffer applications in microprocessor-based systems requiring deterministic burst timing and minimal interface logic.

FAQ

What is the function of the MODE pin on CY7C1363C-133AXC?

The MODE pin selects burst address sequencing: HIGH configures interleaved mode (0,2,4,6,1,3,5,7), matching Intel Pentium cache line fetch order; LOW selects linear mode (0,1,2,3,4,5,6,7). This hardware-selectable feature eliminates need for external mode configuration logic and ensures compatibility with specific CPU architectures.

Does CY7C1363C-133AXC support JTAG boundary scan, and how is it enabled?

Yes, it implements IEEE 1149.1 JTAG boundary scan using dedicated TDI, TDO, TCK, and TMS pins. JTAG is enabled by default; to disable it, tie TMS to VDD and apply a TAP reset sequence. The boundary scan chain covers all I/O pins and internal registers, supporting production test and board-level diagnostics per JESD78.

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

In ZZ mode (ZZ = LOW), the device enters deep power-down, drawing ≤40 mA while retaining all stored data. Wake-up occurs synchronously on ZZ deassertion (HIGH) followed by one CLK cycle - no additional stabilization delay is required, and the next valid access may begin immediately after the first post-wake clock edge.

Can CY7C1363C-133AXC operate with 2.5 V I/O while using 3.3 V core supply?

Yes - VDD is fixed at 3.3 V ±5%/+10%, while VDDQ is independently configurable for either 2.5 V or 3.3 V. This allows direct connection to 2.5 V FPGAs or ASICs without level shifters, while maintaining full 133 MHz performance and 6.5 ns tCO, as validated in the datasheet's AC switching characteristics tables.