Infineon Technologies CY62167EV30LL-45ZXA

Overview

CY62167EV30LL-45ZXA from Cypress Semiconductor is an automotive-grade 16-Mbit CMOS static RAM organized as 1M × 16 or 2M × 8, operating at 45 ns access time over –40 °C to +85 °C, with 2.2 V–3.6 V supply voltage, ultra-low standby current (1.5 µA typ), and automatic power-down capability. It serves as main data buffer in engine control units, ADAS sensor fusion modules, and infotainment head units requiring deterministic timing and low-power retention.

For engineers reviewing the CY62167EV30LL-45ZXA datasheet, CY62167EV30LL-45ZXA pinout, CY62167EV30LL-45ZXA application, or CY62167EV30LL-45ZXA equivalent, key selection criteria include TSOP I/VFBGA package compatibility, byte-enable–controlled 8-/16-bit bus configuration, automotive temperature compliance, sub-3 µA standby current, and 45 ns read/write cycle timing under 3.6 V.

Technical Context

The device implements dual chip enable (CE1/CE2) logic with independent byte high/low enables (BHE/BLE) to support flexible memory mapping in 8-bit or 16-bit microcontroller buses. Its automatic power-down circuit reduces ICC by >99% when CE1 is HIGH, CE2 is LOW, or both BHE and BLE are HIGH - enabling deep sleep states without external control logic.

It features CMOS-compatible input thresholds (VIH = 2.2 V min at VCC ≥ 2.7 V; VIL = 0.7 V max for TSOP I), 10 pF input/output capacitance, and guaranteed data retention down to 1.5 V with ≤10 µA ICCDR - critical for battery-backed operation during cold-crank events in automotive systems.

Key Specifications

Pinout & Package

CY62167EV30LL-45ZXA is supplied in a 48-pin TSOP I package (ZXA suffix), with 32 signal pins, 2 VCC, 2 VSS, and 12 NC/unused pins including BYTE (pin 45 used as A20 in 2M×8 mode). Pin functions are validated per Cypress Document 38-05446 Rev. *Q Figure 2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IS62WV102416BLL-45NLI and R1LV1616RSA-45PB, CY62167EV30LL-45ZXA uniquely combines 2.2 V operation, dual organization, and sub-2 µA typical standby - making it the only option qualified for direct-battery ECU data buffers with mixed-bus legacy compatibility.

Availability

CY62167EV30LL-45ZXA is available at Aetrix Electronics and suitable for engine control units, ADAS sensor hubs, and telematics gateways requiring stable component supply across extended automotive product lifecycles.

Supply support for CY62167EV30LL-45ZXA 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 IoT applications, with global manufacturing and AEC-Q100 validation infrastructure.

CY62167EV30 belongs to the MoBL® (More Battery Life) SRAM product line, engineered specifically for automotive subsystems demanding ultra-low quiescent power, wide voltage tolerance, and guaranteed data retention during battery transients.

FAQ

What is the function of the BYTE pin on CY62167EV30LL-45ZXA?

The BYTE pin determines memory organization: tied to VCC for 1M × 16 mode (standard 16-bit bus), or to VSS for 2M × 8 mode (expands address space to 2M words with 8-bit data path). In TSOP I packages, pin 45 becomes A20 in 2M × 8 mode, while BHE/BLE and I/O8–I/O14 are unused. This pin is not present in VFBGA variants.

How does automatic power-down work without external control signals?

Automatic power-down activates when CE1 is HIGH, CE2 is LOW, or both BHE and BLE are HIGH - placing the device in ultra-low-current state (<12 µA) without requiring MCU GPIO toggling. Internal circuitry detects static address/data lines and disables internal arrays, reducing ICC by >99% compared to active mode.

Can CY62167EV30LL-45ZXA operate reliably during automotive cold-crank events?

Yes. It retains data down to 1.5 V (VDR) with ≤10 µA ICCDR and operates across –40 °C to +85 °C. Its 2.2 V minimum VCC allows continued function during cranking dips to ~2.0 V, and its 0.7 V max VIL (TSOP I) ensures noise immunity against coupled transients on shared PCB traces.

Is the 45 ns access time guaranteed across the full voltage and temperature range?

Yes. The 45 ns tRC and tAA specifications are maximum values guaranteed over the full Automotive-A range (–40 °C to +85 °C, 2.2 V–3.6 V). All AC parameters in Table 7 of Document 38-05446 Rev. *Q are production-tested limits, not typical values - ensuring timing compliance in worst-case environmental conditions.