Infineon Technologies CY62146GN-45ZSXIT

Overview

CY62146GN-45ZSXIT from Cypress Semiconductor is a 4-Mbit (256K × 16) CMOS static RAM with 45 ns access time, operating across dual voltage ranges (2.2–3.6 V and 4.5–5.5 V), ultra-low standby current (8.7 µA max), and automatic CE-controlled power-down mode. It serves as main data buffer in portable embedded systems requiring battery longevity and fast random-access storage.

For engineers reviewing the CY62146GN-45ZSXIT datasheet, CY62146GN-45ZSXIT pinout, CY62146GN-45ZSXIT application, or CY62146GN-45ZSXIT equivalent, this MoBL® SRAM delivers verified timing compliance, byte-selectable I/O architecture, industrial temperature operation (–40 °C to +85 °C), and dual-package availability for space-constrained PCB layouts.

Technical Context

The CY62146GN-45ZSXIT implements a full CMOS 256K × 16 asynchronous SRAM array with independent byte-enable control (BHE/BLE), enabling selective 8-bit writes without disturbing adjacent bytes. Its logic supports three active modes-address-controlled read, OE-controlled read, and WE-controlled write-with guaranteed tRC = 45 ns and tAA = 45 ns under worst-case VCC and temperature conditions.

Power management is implemented via hardware-driven CE gating: when CE is HIGH, the device enters automatic power-down mode, reducing ICC to ≤8.7 µA (ISB2), and all I/Os transition to high-impedance state. Data retention is maintained down to VDR = 1.0 V with ICCDR ≤13 µA, supporting low-power suspend states in handheld devices.

Key Specifications

Pinout & Package

Available in 48-ball VFBGA (6 mm × 8 mm, 0.8 mm pitch) and 44-pin TSOP II (10 mm × 20 mm) packages. Pin functions are identical across both variants.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS62WV25616BLL-45NLI and NVTFS25616L-45G, the CY62146GN-45ZSXIT uniquely balances wide voltage compatibility, ultra-low standby power, and compact packaging-making it optimal for portable, battery-sensitive, and thermally constrained applications where external nonvolatility is managed separately.

Availability

CY62146GN-45ZSXIT is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC data buffers, automotive infotainment UI cache, and wireless sensor node memory requiring stable component supply and long-term lifecycle assurance.

Supply support for CY62146GN-45ZSXIT 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-reliability memory and programmable solutions for industrial, automotive, and consumer electronics with emphasis on low-power innovation.

The MoBL® (More Battery Life) SRAM product line was engineered specifically for portable and energy-constrained systems, delivering industry-leading standby current and flexible voltage operation without sacrificing speed or density.

FAQ

What is the maximum clock frequency supported by CY62146GN-45ZSXIT?

CY62146GN-45ZSXIT is an asynchronous SRAM and does not use a clock signal. Its performance is defined by access time (tAA = 45 ns max) and cycle time (tRC = 45 ns max), allowing reliable operation up to approximately 22 MHz sustained random read/write rates when interfaced with appropriate address/data setup/hold margins.

Can CY62146GN-45ZSXIT operate at 3.0 V with guaranteed 45 ns timing?

Yes. The device is fully specified for 2.2–3.6 V operation, and all switching characteristics-including tAA and tRC = 45 ns-are guaranteed across this entire range at industrial temperature (–40 °C to +85 °C), provided VCC remains stable and decoupled per layout guidelines in the datasheet.

How does the automatic power-down feature activate?

Automatic power-down activates when Chip Enable (CE) is driven HIGH while all address and data lines are held static. No additional control signals or timing sequences are required-the internal circuitry detects CE HIGH and static address bus to reduce ICC to ≤8.7 µA within 45 ns (tPD).

Are the NC pins on CY62146GN-45ZSXIT required to be grounded or left floating?

NC pins are not connected to the die and must remain unconnected on the PCB. Neither grounding nor pulling them HIGH is permitted, as doing so may introduce parasitic coupling or violate internal isolation boundaries defined in the silicon layout.