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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Infineon Technologies CY15B116QN-40BKXAT

Name: CY15B116QN-40BKXAT
Brand: Infineon Technologies
SKU: CY15B116QN-40BKXAT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY15B116QN-40BKXAT

Manufacturer:: Infineon Technologies

Category:: Memory

Package:: 24-TBGA

Datasheet:: CY15B116QN-40BKXAT.pdf

Description:: IC FRAM 16MBIT SPI 24FBGA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CY15B116QN-40BKXAT from Infineon is a 16 Mb automotive-grade ferroelectric RAM (F-RAM) organized as 2048K × 8, supporting SPI up to 40 MHz, operating from 1.8 V to 3.6 V, and rated for –40°C to +85°C. It delivers instant non-volatile writes with 10¹⁴ endurance cycles and 151-year data retention-enabling reliable logging in engine control units, ADAS sensor buffers, and battery management systems where rapid, frequent writes are critical.

For engineers reviewing the CY15B116QN-40BKXAT datasheet, CY15B116QN-40BKXAT pinout, CY15B116QN-40BKXAT application, or CY15B116QN-40BKXAT equivalent, key selection considerations include SPI Mode 0/3 compatibility, hardware/software write protection, 256-byte dedicated special sector survivability across reflow cycles, and AEC-Q100 Grade 3 qualification for under-hood deployment.

Technical Context

The CY15B116QN-40BKXAT implements a true serial F-RAM architecture with zero write latency: data commits at bus speed without polling, eliminating the 1–100 ms delays typical of SPI flash or EEPROM. Its internal logic decodes opcodes (e.g., Read, Write, WREN, WRDI) and manages address latching for 20-bit byte addressing across the full 2048K × 8 array.

It integrates dual-layer write protection-hardware via active-low WP pin (when WPEN=1) and software via status register bits enabling 1/4, 1/2, or full-array block lock-and includes dedicated registers for Manufacturer ID, Product ID, Unique Device ID, and user-writable 8-byte serial number, all accessible over SPI.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	16 Mbit (2048K × 8), directly replaceable for 16Mb SPI flash/EEPROM in same footprint
SPI Clock Frequency	Up to 40 MHz - enables 4 MB/s sustained write throughput without wait states
Endurance	10¹⁴ read/write cycles - supports >27,000 writes/sec continuously for 10+ years in data loggers
Data Retention	151 years at +85°C - validated non-volatility without refresh, critical for infrequent-access safety logs
Supply Voltage	1.8 V to 3.6 V - compatible with 1.8 V, 2.5 V, and 3.3 V automotive microcontroller I/O domains
Operating Temp	–40°C to +85°C - meets AEC-Q100 Grade 3 for passenger compartment and powertrain-adjacent locations
Deep Power-down Current	1.5 µA (typ) - enables ultra-low-power sleep modes in always-on vehicle networks

Pinout & Package

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

Pin/Terminal	Circuit Role	Design Meaning
CS	Chip Select input	Active-low enable: device enters standby and tristates SO when HIGH; falling edge initiates opcode sequence
SCK	Serial clock input	Synchronous timing reference; inputs latched on rising edge, outputs driven on falling edge (SPI Modes 0/3)
SI	Serial input	Opcode, address, and write data input; must be driven to valid logic level to meet IDD specs
SO	Serial output	Read data output; tristated during all non-read operations including write and status access
WP	Write protect input	Hardware lock for status register when WPEN=1; must tie to VDD if unused to prevent accidental protection
VDD	Power supply	1.8–3.6 V core supply; decoupling capacitor required per datasheet layout guidelines
VSS	Ground	System ground reference; requires low-impedance connection to minimize noise coupling into F-RAM array
DNU	Do Not Use	No internal connection; must float or tie to VDD - not grounded or driven

Key Features

Feature	Design Value
Instant non-volatile write	Zero write latency: data committed immediately after each byte transfer; no polling or timeout handling required in firmware
Dedicated 256-byte special sector	Retains data through ≥3 standard Pb-free reflow cycles (260°C peak), enabling secure storage of calibration or VIN data pre-assembly
Multi-level write protection	Combines hardware (WP pin) and software (status register) controls to prevent unintended writes during voltage transients or firmware faults
Unique Device ID + Serial Number	Factory-programmed 64-bit unique ID and user-writable 8-byte serial number support traceability, anti-cloning, and board-level identification
Low-power Deep Power-down mode	1.5 µA typical current draw enables >10-year battery-backed operation in telematics or tire pressure sensors

Applications

Engine Control Unit (ECU) Data Logging

ADAS Camera Sensor Buffering

Use Scenario: Continuous recording of misfire counts, knock sensor events, and fuel trim corrections during vehicle operation.

IC Role / Device Role / Timing Role: Non-volatile scratchpad memory interfacing directly with MCU SPI peripheral; replaces EEPROM requiring wear leveling.

Use Value: Eliminates 50–100 ms write stalls per event, preventing data loss during sudden ignition-off or reset; supports >100 k write cycles/hour without degradation.

Use Scenario: Temporary frame metadata buffering between image capture and compression in surround-view camera modules.

IC Role / Device Role / Timing Role: High-speed SPI-accessible buffer storing timestamp, exposure settings, and lens distortion coefficients per frame.

Use Value: Enables deterministic <1 µs write latency per 8-byte record, ensuring metadata coherency even at 60 fps burst capture.

Battery Management System (BMS) Safety Logs

Infotainment Head Unit Configuration Storage

Use Scenario: Storing cell voltage imbalances, thermal fault history, and SOC calibration deltas across charge/discharge cycles.

IC Role / Device Role / Timing Role: AEC-Q100 Grade 3 non-volatile memory mapped to MCU's SPI interface for real-time safety-critical logging.

Use Value: Guarantees 151-year data retention at +85°C inside battery pack enclosure; survives 10¹⁴ cycles across 15-year service life.

Use Scenario: Persisting user preferences (display brightness, audio EQ, navigation favorites) across power cycles and firmware updates.

IC Role / Device Role / Timing Role: SPI-configurable non-volatile storage accessed during boot and runtime by infotainment SoC.

Use Value: Prevents configuration loss during brown-out or OTA update interruption; no firmware wear-leveling logic needed.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
CY15V116QN-40BKXAT	1.71–1.89 V supply only; identical pinout, timing, and feature set otherwise	Targeted for 1.8 V-only systems (e.g., certain ADAS SoCs); not suitable for mixed-voltage 3.3 V MCU interfaces	Select only if system VDD is strictly 1.8 V and AEC-Q100 Grade 3 compliance is required
AT25DF161-AU	16 Mb SPI flash; 100k write cycles; 100 ms typical page program time; no built-in write protection	Requires external hardware or firmware-based write protection; unsuitable for sub-millisecond write-critical logging	Acceptable only for infrequently updated configuration storage where write latency and endurance are non-critical

Compared with CY15V116QN-40BKXAT, the CY15B116QN-40BKXAT offers broader voltage flexibility (1.8–3.6 V), while AT25DF161-AU lacks both endurance and write speed - making the CY15B116QN-40BKXAT the sole option meeting AEC-Q100 Grade 3 with instant-write capability in this density class.

Availability

CY15B116QN-40BKXAT is available at Aetrix Electronics and suitable for engine control units, ADAS camera modules, and battery management systems requiring stable component supply, long-term automotive qualification, and zero-latency non-volatile writes.

Supply support for CY15B116QN-40BKXAT 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 manufacturer specializing in power management, automotive ICs, and memory solutions, with global manufacturing and automotive qualification infrastructure.

CY15B116QN belongs to the EXCELON™ Auto F-RAM product line, engineered specifically for automotive subsystems demanding high-reliability, high-endurance, and deterministic non-volatile storage without write delays.

FAQ

Is CY15B116QN-40BKXAT pin-compatible with standard SPI flash devices?

Yes - it uses the industry-standard 8-pin SPI pinout (CS, SCK, SI, SO, VDD, VSS, WP, DNU) in a 24-ball FBGA package matching common 16Mb SPI flash footprints. However, WP functionality differs: it protects the status register only when WPEN=1, unlike flash where WP often disables all writes. Layout reuse is possible but requires firmware validation of protection behavior.

Does the 256-byte special sector survive automotive rework processes?

Yes - Infineon validates that the dedicated 256-byte special sector retains data through three full Pb-free reflow cycles (peak 260°C, per J-STD-020). This enables pre-programming of VIN, calibration constants, or security keys before final assembly, with guaranteed integrity post-soldering.

How does the 10¹⁴ endurance translate to real-world automotive service life?

At 1000 writes/second (e.g., high-frequency sensor logging), the device sustains operation for over 3,170 years. Even under worst-case automotive conditions - 10,000 writes/minute in an ECU - it exceeds 19,000 years of functional life, far exceeding any vehicle's service lifetime or regulatory data retention requirements.

Can SO and SI be wired to a single MCU GPIO for 3-wire SPI mode?

No - the CY15B116QN-40BKXAT does not support 3-wire SPI. SI and SO are separate, dedicated pins with independent direction control. While the datasheet notes SI "may be connected to SO for single pin data interface", this refers to external multiplexing circuitry (e.g., analog switch), not direct MCU pin sharing. Hardware design must maintain distinct SI/SO traces.

CY15B116QN-40BKXAT Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: Excelon™-LP,F-RAM™

Package/Case:: 24-TBGA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: -

Memory Type:: Non-Volatile

Memory Format:: FRAM

Technology:: FRAM (Ferroelectric RAM)

Memory Size:: 16Mbit

Memory Organization:: 2M x 8

Memory Interface:: SPI

Clock Frequency:: 40 MHz

Write Cycle Time - Word, Page:: -

Access Time:: 9 ns

Voltage - Supply:: 1.8V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 24-FBGA (6x8)

CY15B116QN-40BKXAT FAQ

1.How can I place an order for CY15B116QN-40BKXAT through Aetrix?

Please submit a Request for Quotation (RFQ) for CY15B116QN-40BKXAT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for CY15B116QN-40BKXAT reliable?

The price and inventory of CY15B116QN-40BKXAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY15B116QN-40BKXAT is usually 5 days.

3.What payment methods are accepted for CY15B116QN-40BKXAT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY15B116QN-40BKXAT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY15B116QN-40BKXAT?

CY15B116QN-40BKXAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY15B116QN-40BKXAT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for CY15B116QN-40BKXAT?

For technical support, including CY15B116QN-40BKXAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY15B116QN-40BKXAT requirements.

6.How does Aetrix verify that CY15B116QN-40BKXAT is sourced from the original manufacturer or authorized distributors?

All CY15B116QN-40BKXAT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY15B116QN-40BKXAT meets industry standards.

7.What is the process for return or replacement of CY15B116QN-40BKXAT?

All CY15B116QN-40BKXAT units undergo pre-shipment inspection (PSI). If there is an issue with CY15B116QN-40BKXAT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The CY15B116QN-40BKXAT part is unused and in its original packaging.

Return procedure for CY15B116QN-40BKXAT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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