Cypress Semiconductor Corp CY62167EV18LL-55BVI

Overview

CY62167EV18LL-55BVI from Cypress Semiconductor is a 16-Mbit (1 M × 16) CMOS static RAM with 55 ns access time, operating across 1.65 V–2.25 V supply, ultra-low standby current (1.5 µA typ), and automatic power-down mode. It serves as high-speed, low-power data buffer in portable memory subsystems-e.g., cellular baseband processors requiring byte-selectable 16-bit parallel interface and rapid deselection recovery.

For engineers reviewing the CY62167EV18LL-55BVI datasheet, CY62167EV18LL-55BVI pinout, CY62167EV18LL-55BVI application, or CY62167EV18LL-55BVI equivalent, key selection criteria include VFBGA-48 package compatibility, dual chip enable (CE1/CE2) logic for hierarchical memory mapping, BHE/BLE-controlled byte write capability, and guaranteed 55 ns read/write timing at 1.8 V.

Technical Context

This SRAM implements a fully decoded 1 M × 16 architecture with independent byte enable (BHE/BLE) control, enabling selective 8-bit writes to upper or lower data bytes without disturbing adjacent locations. Its dual chip enable (CE1 active-low, CE2 active-high) supports cascaded memory expansion while maintaining deterministic high-impedance output behavior during deselect.

The device integrates automatic power-down circuitry that reduces ICC to ≤12 µA when CE1 is HIGH, CE2 is LOW, or both BHE and BLE are HIGH-achieving >99% active-to-standby power reduction. Data retention remains valid down to 1.0 V with ICCDR ≤10 µA, supporting battery-backed operation in low-voltage sleep states.

Key Specifications

Pinout & Package

48-ball very fine ball grid array (VFBGA) package with 0.5 mm pitch, 6 mm × 8 mm body size, and JEDEC MO-276AA compliant footprint. Thermal resistance θJA = 55 °C/W (2-layer board).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-Mbit parallel SRAM applications.

Compared with IS62WV102416BLL-55NLI and R1LV1616RSA-55PB, CY62167EV18LL-55BVI uniquely delivers automatic power-down activation without software intervention and true 8-bit write isolation-critical for energy-constrained portable systems where firmware overhead and bus efficiency directly impact battery life.

Availability

CY62167EV18LL-55BVI is available at Aetrix Electronics and suitable for mobile baseband subsystems, industrial PLC data buffering, medical wearable sensor caches, and automotive infotainment UI buffers requiring stable component supply across extended temperature ranges (–40 °C to +85 °C).

Supply support for CY62167EV18LL-55BVI 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 automotive, industrial, and consumer electronics, with emphasis on low-power innovation.

CY62167EV18 belongs to the MoBL® (More Battery Life) SRAM product line, engineered specifically for portable and battery-operated devices demanding nanowatt-scale standby power without sacrificing 55 ns random-access performance.

FAQ

What is the minimum VCC required to retain data in CY62167EV18LL-55BVI?

Data retention is guaranteed down to VCC = 1.0 V, with ICCDR ≤10 µA under those conditions. This allows the device to maintain memory contents during brown-out events or controlled low-voltage sleep modes, provided CE1, CE2, BHE, and BLE are held at valid CMOS levels per datasheet Section 6.

Can CY62167EV18LL-55BVI operate reliably at 2.25 V with 55 ns timing?

Yes-the device is fully characterized and specified for 55 ns access time across its entire rated VCC range of 1.65 V to 2.25 V. Electrical characteristics tables (page 4) confirm tRC, tAA, and tACE parameters meet 55 ns maximum at VCC = 2.25 V and TA = 85 °C.

How does automatic power-down activate without software control?

Hardware logic monitors CE1, CE2, BHE, and BLE states continuously. When CE1 is HIGH, CE2 is LOW, or both BHE and BLE are HIGH, internal circuitry forces the core array into standby mode-reducing ICC to ≤12 µA-without any register write or clock gating sequence.

Is the VFBGA-48 package RoHS and REACH compliant?

Yes-CY62167EV18LL-55BVI is manufactured in Pb-free (lead-free) process per JEDEC J-STD-609A Class 2a, with full compliance to EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, including SVHC screening documentation available upon request.