Infineon Technologies CY15V116QN-40BKXA

Overview

CY15V116QN-40BKXA from Infineon is a 16 Mb automotive-grade ferroelectric RAM (F-RAM) organized as 2048K × 8, supporting SPI up to 40 MHz, operating at 1.71–1.89 V, and rated for –40°C to +85°C. It delivers instant non-volatile writes with 10¹⁴ endurance cycles and 151-year data retention, used in automotive control units for real-time logging of sensor and diagnostic data.

For engineers reviewing the CY15V116QN-40BKXA datasheet, CY15V116QN-40BKXA pinout, CY15V116QN-40BKXA application, or CY15V116QN-40BKXA equivalent, key selection criteria include SPI Mode 0/3 compatibility, WP-pin hardware write protection, 24-ball FBGA package fit, and AEC-Q100 Grade 3 compliance for safety-critical automotive memory subsystems.

Technical Context

The CY15V116QN-40BKXA implements a true serial F-RAM architecture with zero write latency - data commits immediately upon byte transfer without polling or erase cycles. Its SPI interface operates synchronously at up to 40 MHz in Modes 0 and 3, with inputs latched on SCK rising edge and outputs driven on falling edge.

It integrates a non-volatile status register, manufacturer/product ID, unique device ID, and an 8-byte writable serial number. A dedicated 256-byte special sector survives up to three reflow soldering cycles, enabling board-level traceability without post-assembly programming.

Key Specifications

Pinout & Package

Package: 24-ball fine-pitch ball grid array (FBGA), 6 mm × 8 mm, 0.8 mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar serial non-volatile memory applications.

Compared with CY15B116QN-40BKXA, the CY15V116QN-40BKXA offers tighter voltage tolerance ideal for 1.8 V domain controllers, while FM25V10-G lacks automotive qualification, density, speed, and package compatibility - making it unsuitable as a drop-in replacement.

Availability

CY15V116QN-40BKXA is available at Aetrix Electronics and suitable for advanced driver assistance systems (ADAS), electric powertrain control units, and automotive body control modules requiring stable component supply across extended product lifecycles.

Supply support for CY15V116QN-40BKXA 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 is a German semiconductor leader specializing in power management, automotive ICs, and memory solutions, with global manufacturing and automotive qualification expertise.

The EXCELON™ Auto F-RAM product line targets automotive applications demanding ultra-high endurance, instant write, and AEC-Q100 reliability - specifically engineered for ECU data logging, configuration storage, and safety-critical state retention.

FAQ

Is CY15V116QN-40BKXA pin-compatible with CY15B116QN-40BKXA?

Yes - both share identical 24-ball FBGA package, pin assignments, SPI command set, and timing specifications. The only difference is VDD operating range: CY15V116QN supports 1.71–1.89 V, while CY15B116QN supports 1.8–3.6 V. No PCB redesign is needed for voltage-domain migration within 1.8 V systems.

Does the 256-byte special sector require separate addressing or commands?

No - the special sector is accessed using standard READ and WRITE opcodes with its dedicated 256-byte address range (0x1FFC00–0x1FFFFF). It behaves identically to main array memory but is fabricated with enhanced thermal robustness to survive reflow soldering cycles without data loss.

How does write protection work when both WP pin and status register are enabled?

When WPEN bit = 1 in the status register, the WP pin becomes active-low hardware lock for status register writes only. Main array writes remain enabled unless blocked by software block protection bits. This layered scheme prevents accidental status corruption while allowing runtime array writes - critical for field-updatable automotive firmware.

Can CY15V116QN-40BKXA operate reliably during cold-cranking voltage drops?

Yes - its 1.71 V minimum VDD allows operation down to battery voltages observed during cold-cranking (typically ≥1.75 V for ≤100 ms). Combined with 0.1 µA hibernate current, it maintains data integrity and resumes logging immediately post-cranking without initialization delay.