Infineon Technologies CY62157CV33LL-70BAXA

Overview

CY62157CV33LL-70BAXA from Cypress Semiconductor is a 512K × 16-bit CMOS static RAM with 3.0V–3.6V supply range, 70 ns access time, and ultra-low active current (1.5 mA @ 1 MHz). It features automatic CE power-down (ISB2 ≤ 30 µA), byte-level write control via BHE/BLE, and operates across –40°C to +85°C for automotive-A applications. Used in battery-powered portable systems requiring fast, low-power data buffering.

For engineers reviewing the CY62157CV33LL-70BAXA datasheet, CY62157CV33LL-70BAXA pinout, CY62157CV33LL-70BAXA application, or CY62157CV33LL-70BAXA equivalent, key selection criteria include VCC range compatibility, FBGA-48 thermal performance (ΘJA = 55 °C/W), standby current under CE/OE/BHE/BLE control, and timing margins for 70 ns read/write cycles in embedded memory subsystems.

Technical Context

This SRAM implements dual chip enable logic (CE1 active-low, CE2 active-high) and independent byte enables (BHE/BLE) to support 8-bit sub-word writes without bus contention. Its power-down circuitry reduces ICC by >99% when deselected-triggered by CE1 HIGH, CE2 LOW, or both BHE and BLE HIGH.

The device uses CMOS architecture with input/output capacitance of 6 pF (CIN) and 8 pF (COUT), supports TTL-compatible inputs (VIH = 2.2 V, VIL = 0.8 V), and guarantees tRC = 70 ns at VCC = 3.6 V with 30-pF load and 1 V/ns edge rates per AC test conditions.

Key Specifications

Pinout & Package

Package: 48-ball Fine-Pitch Ball Grid Array (FBGA), top view, RoHS-compliant, with NC pins at E3 (DNU) and A18 positions.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed, low-power SRAM applications.

Compared with IS62WV51216BLL-70BLI and R1LV51216ASB-70SI, CY62157CV33LL-70BAXA delivers tighter ISB2 control (≤30 µA max) and formal automotive-A qualification-critical for ECUs requiring guaranteed low-power behavior over full temperature range without design margin penalties.

Availability

CY62157CV33LL-70BAXA is available at Aetrix Electronics and suitable for portable medical monitors, automotive infotainment head units, and industrial PLC HMI modules requiring stable component supply with guaranteed automotive-A temperature performance and low-power memory buffering.

Supply support for CY62157CV33LL-70BAXA 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 microcontroller solutions for automotive, industrial, and consumer electronics with emphasis on low-power innovation.

CY62157CV33 belongs to the MoBL™ (More Battery Life) SRAM product line, engineered specifically for portable and battery-constrained systems needing fast, deterministic access with sub-mA active current and nanosecond-level standby recovery.

FAQ

What is the maximum clock frequency supported by CY62157CV33LL-70BAXA?

CY62157CV33LL-70BAXA does not use a clock signal-it is an asynchronous SRAM. Its maximum operational speed is defined by access time: tRC = 70 ns, corresponding to a maximum effective cycle rate of ~14.3 MHz. Timing depends on address, CE, OE, and WE signal transitions-not a system clock.

Can CY62157CV33LL-70BAXA operate at 2.8 V?

No. The CY62157CV33 variant requires VCC between 3.0 V and 3.6 V per datasheet specifications. Operation below 3.0 V violates absolute maximum ratings and risks timing failure, data corruption, or increased standby leakage. Use CY62157CV30 for 2.7–3.3 V operation.

How does automatic power-down activate, and what pins control it?

Automatic power-down activates when CE1 is HIGH or CE2 is LOW-regardless of OE, WE, BHE, or BLE states. This forces ICC to ≤30 µA (ISB2 max) and places all I/Os in high-impedance. No additional control logic is needed; the feature is hardwired into the device's power management circuitry.

Is the FBGA-48 package lead-free, and what is its moisture sensitivity level?

Yes, CY62157CV33LL-70BAXA is Pb-free and RoHS-compliant. Its FBGA-48 package has Moisture Sensitivity Level (MSL) 3 per J-STD-020, requiring floor life of 168 hours at ≤30°C/60% RH before reflow. Baking per IPC/JEDEC standards is required if exposed beyond that limit.