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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

Infineon Technologies CY9AF314NAPF-G-JNE1

Name: CY9AF314NAPF-G-JNE1
Brand: Infineon Technologies
SKU: CY9AF314NAPF-G-JNE1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY9AF314NAPF-G-JNE1

Manufacturer:: Infineon Technologies

Category:: Microcontrollers

Package:: 100-BQFP

Datasheet:: CY9AF314NAPF-G-JNE1.pdf

Description:: IC MCU 32BIT 256KB FLASH 100QFP

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Product details

Overview

CY9AF314NAPF-G-JNE1 from Spansion (formerly Fujitsu Semiconductor) is a 32-bit ARM Cortex-M3 microcontroller with 256 KB on-chip Flash, 32 KB SRAM (split into two 16 KB banks), and integrated peripherals including USB 2.0 Full-Speed Function/Host, 8-channel multi-function serial interface (UART/CSIO/LIN/I²C), 16-channel 12-bit ADC, and motor control timers. It operates at up to 40 MHz and targets cost-sensitive industrial motor control and embedded automation systems.

For engineers reviewing the CY9AF314NAPF-G-JNE1 datasheet, CY9AF314NAPF-G-JNE1 pinout, CY9AF314NAPF-G-JNE1 application, or CY9AF314NAPF-G-JNE1 equivalent, key selection criteria include its 100-pin LQFP package, dual SRAM bus architecture, QPRC encoder interface, hardware CRC accelerator (CCITT CRC16/IEEE-802.3 CRC32), and support for STOP/SLEEP/TIMER low-power modes with dual watchdogs (HW + SW).

Technical Context

The CY9AF314NAPF-G-JNE1 implements the ARM Cortex-M3 r2p1 core with NVIC supporting 48 peripheral interrupts and 16 priority levels, plus a 24-bit SysTick timer for RTOS scheduling. Its memory subsystem features zero-wait-state Flash access and dual-bus-connected SRAM (SRAM0 on I/D-code bus, SRAM1 on system bus), enabling concurrent CPU and DMA operation.

Peripheral integration includes a 2-unit Quadrature Position/Revolution Counter (QPRC) for precise motor shaft position tracking, a 2-unit Multi-function Timer with input capture, output compare, A/D activation, and waveform generation, and a dedicated USB controller supporting both function (6 endpoints, double-buffered) and host (256-byte packet, auto device detection) roles - all operating within 2.7–5.5 V supply range.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	ARM Cortex-M3 r2p1, 40 MHz max - enables deterministic real-time control with Thumb-2 instruction set and hardware divide.
Memory	256 KB Flash (0-wait), 32 KB SRAM (16 KB SRAM0 + 16 KB SRAM1) - supports concurrent code execution and data buffering without bus contention.
ADC	16-channel 12-bit SAR ADC, 1.0 µs conversion @ 5 V - provides high-resolution analog sensing for motor current/voltage feedback loops.
USB Interface	USB 2.0 Full-Speed Function & Host - enables direct PC communication (CDC/HID) and peripheral attachment (e.g., USB HID devices) without external PHY.
Timers	8-channel Base Timer (PWM/PPG/reload/PWC), 2-unit MF-Timer (3× free-run, 4× input capture, 6× output compare), 2× QPRC - delivers full-field-oriented control (FOC) timing and encoder position decoding.
Low-Power Modes	SLEEP, TIMER, STOP - STOP mode retains SRAM and wakes via external interrupt or Watch Counter (up to 64 s @ 32.768 kHz), critical for battery-backed applications.
CRC Accelerator	CCITT CRC16 and IEEE-802.3 CRC32 hardware engine - offloads integrity checks from CPU during firmware updates or CAN/UART frame validation.

Pinout & Package

CY9AF314NAPF-G-JNE1 is housed in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) package with exposed thermal pad. Pin functions are fully configurable via port relocation registers, supporting flexible PCB layout and peripheral remapping.

Pin/Terminal	Circuit Role	Design Meaning
VCC / VSS	Power supply / Ground	Dual power domains: VCC (2.7–5.5 V) for core/peripherals; USBVCC (3.0–3.6 V) required only when USB I/O active.
P00–P07, P10–P17, etc.	General-purpose I/O	Up to 83 GPIOs; individually configurable pull-up, read-back, and peripheral function assignment via port relocate register.
AIN/BIN/ZIN	QPRC encoder inputs	Dedicated quadrature A/B/Z inputs per QPRC unit - enable 16-bit position/revolution counting with programmable edge detection.
USBDP/USBDM	USB differential pair	Full-Speed USB 2.0 physical interface - requires 1.5 kΩ pull-up on USBDP for function mode enumeration.
AD0–AD15	Analog inputs	16-channel 12-bit ADC inputs - shared with GPIO; support scanning mode with 16-step FIFO for continuous motor phase current sampling.
CLKIN/CLKOUT	External clock interface	Supports 4–48 MHz crystal or external clock source; paired with built-in CR oscillators and Main PLL for robust clock supervision (CSV).

Key Features

Feature	Design Value
Dual-bus SRAM architecture	SRAM0 (I/D-code bus) and SRAM1 (system bus) allow simultaneous CPU fetch and DMA transfer - eliminates memory bottlenecks in real-time control loops.
Quadrature Position/Revolution Counter (QPRC)	Two independent 16-bit position + 16-bit revolution counters with AIN/BIN/ZIN edge configuration - enables precise closed-loop servo positioning without software overhead.
Hardware CRC accelerator	Offloads CCITT CRC16 and IEEE-802.3 CRC32 computation - reduces firmware update verification time by >90% vs. software-only implementation.
Motor control timer suite	MF-Timer with dead-time insertion, PWM output, DC chopper waveform, and DTIF emergency stop interrupt - meets functional safety requirements for BLDC/PMSM drives.
Configurable low-power modes	STOP mode retains full SRAM content and wakes in <5 µs via external interrupt or Watch Counter - ideal for intermittent sensor polling in energy-constrained systems.

Applications

Industrial Motor Drive

Smart HVAC Controller

Use Scenario: Closed-loop control of 3-phase BLDC motors in factory automation conveyors.

IC Role / Device Role / Timing Role: Real-time execution of FOC algorithm using QPRC for rotor position, 16-channel ADC for phase current sensing, and MF-Timer for PWM generation with dead-time insertion.

Use Value: Eliminates need for external encoder interface IC and offloads CRC-based firmware integrity checks - reducing BOM count and boot-time verification latency.

Use Scenario: Centralized air-handling unit (AHU) controller managing fan speed, damper actuation, and temperature sensing.

IC Role / Device Role / Timing Role: Coordinating LIN bus communication to zone thermostats, UART logging to SD card, and USB host interface for field technician configuration via USB flash drive.

Use Value: Single-chip integration of LIN master, USB host, and 12-bit ADC avoids external transceivers and level shifters - simplifying compliance testing for EMC and ESD.

Programmable Logic Controller (PLC) I/O Module

Medical Infusion Pump

Use Scenario: DIN-rail mounted digital I/O expansion module with isolated inputs/outputs and Modbus RTU over RS-485.

IC Role / Device Role / Timing Role: UART channel configured as RS-485 half-duplex interface with automatic direction control, supported by hardware flow control disabled (per datasheet) and CRC32-accelerated frame checksum.

Use Value: Hardware CRC32 ensures reliable Modbus frame validation under EMI stress - meeting IEC 61000-4-3 immunity requirements without CPU intervention.

Use Scenario: Battery-powered infusion pump requiring precise flow rate control and tamper-resistant firmware updates.

IC Role / Device Role / Timing Role: Execution of safety-critical dosing algorithm in STOP mode with wake-on-encoder pulse, using LVD2 reset and hardware watchdog (HW + SW) for fail-safe shutdown.

Use Value: Dual watchdog architecture (HW CR oscillator + SW timer) guarantees recovery from clock fault or software hang - satisfying IEC 62304 Class C software safety requirements.

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MB9AF314MAPF-G-JNE1	Same die, 100-pin LQFP, but with 32 KB SRAM (16+16) and 256 KB Flash - identical peripheral set and pinout.	No functional difference; JNE1 suffix denotes same quality grade and packaging - direct drop-in replacement.	Select when exact footprint and firmware compatibility are required; no requalification needed.
MB9AF315MAPF-G-JNE1	Higher memory variant: 384 KB Flash, 32 KB SRAM, same 100-pin LQFP package and peripheral complement.	Enables larger firmware images (e.g., OTA update stack + dual-bank bootloader) without changing PCB layout.	Choose when future firmware scalability or secure boot partitioning is required; pin-compatible with CY9AF314NAPF-G-JNE1.

Compared with MB9AF314MAPF-G-JNE1 (identical spec) and MB9AF315MAPF-G-JNE1 (larger Flash), CY9AF314NAPF-G-JNE1 offers optimal balance of memory resources and cost for fixed-function motor control applications where firmware size is stable and predictable.

Availability

CY9AF314NAPF-G-JNE1 is available at Aetrix Electronics and suitable for industrial motor drives, smart HVAC controllers, PLC I/O modules, and medical infusion pumps requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for CY9AF314NAPF-G-JNE1 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

Spansion - formed from the merger of Fujitsu Semiconductor's microcontroller business and Cypress Semiconductor's memory division - specializes in high-reliability embedded controllers and non-volatile memory solutions for industrial and automotive markets.

The MB9A310A Series, including CY9AF314NAPF-G-JNE1, was designed specifically for cost-sensitive, high-performance motor control and real-time automation applications - integrating QPRC, motor timers, and USB host/function in a single 100-pin LQFP package.

FAQ

What is the maximum operating frequency and voltage range for CY9AF314NAPF-G-JNE1?

The CY9AF314NAPF-G-JNE1 operates at up to 40 MHz across a supply voltage range of 2.7 V to 5.5 V on VCC. USB functionality requires USBVCC to be regulated between 3.0 V and 3.6 V when the USB interface is active; otherwise, USBVCC may be tied to VCC (2.7–5.5 V) for GPIO use only.

Does CY9AF314NAPF-G-JNE1 support external memory expansion?

No. Unlike MB9AF315/316 variants, CY9AF314NAPF-G-JNE1 does not include an External Bus Interface. The datasheet explicitly states that MB9AF314LA/MA/NA devices omit this feature - limiting memory expansion to on-chip Flash (256 KB) and SRAM (32 KB).

How many USB endpoints does the device support in function mode?

In USB function mode, CY9AF314NAPF-G-JNE1 supports up to six endpoints: Endpoint 0 (control transfer only), Endpoints 1–2 (configurable for bulk/interrupt/isochronous), and Endpoints 3–5 (bulk/interrupt only). All endpoints 1–5 implement double buffering for efficient data throughput.

Is hardware flow control available on UART channels?

No. Hardware flow control (CTS/RTS) is explicitly unsupported on CY9AF314NAPF-G-JNE1 per the datasheet: "MB9AF311LA, F312LA and F314LA do not support Hardware Flow control." Only software XON/XOFF flow control is available for UART channels 0–3 and 4–7.

CY9AF314NAPF-G-JNE1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Package/Case:: 100-BQFP

Series:: FM3 MB9A310A

Packaging:: Tray

Product Status:: Discontinued at Digi-Key

Programmable:: Not Verified

Core Processor:: ARM® Cortex®-M3

Core Size:: 32-Bit Single-Core

Speed:: 40MHz

Connectivity:: CSIO, EBI/EMI, I2C, LINbus, UART/USART, USB

Peripherals:: DMA, LVD, POR, PWM, WDT

Number of I/O:: 83

Program Memory Size:: 256KB (256K x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 32K x 8

Voltage - Supply (Vcc/Vdd):: 2.7V ~ 5.5V

Data Converters:: A/D 16x12b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 105°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

CY9AF314NAPF-G-JNE1 FAQ

1.How can I place an order for CY9AF314NAPF-G-JNE1 through Aetrix?

Please submit a Request for Quotation (RFQ) for CY9AF314NAPF-G-JNE1 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 CY9AF314NAPF-G-JNE1 reliable?

The price and inventory of CY9AF314NAPF-G-JNE1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY9AF314NAPF-G-JNE1 is usually 5 days.

3.What payment methods are accepted for CY9AF314NAPF-G-JNE1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY9AF314NAPF-G-JNE1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY9AF314NAPF-G-JNE1?

CY9AF314NAPF-G-JNE1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY9AF314NAPF-G-JNE1 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 CY9AF314NAPF-G-JNE1?

For technical support, including CY9AF314NAPF-G-JNE1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY9AF314NAPF-G-JNE1 requirements.

6.How does Aetrix verify that CY9AF314NAPF-G-JNE1 is sourced from the original manufacturer or authorized distributors?

All CY9AF314NAPF-G-JNE1 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 CY9AF314NAPF-G-JNE1 meets industry standards.

7.What is the process for return or replacement of CY9AF314NAPF-G-JNE1?

All CY9AF314NAPF-G-JNE1 units undergo pre-shipment inspection (PSI). If there is an issue with CY9AF314NAPF-G-JNE1, 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 CY9AF314NAPF-G-JNE1 part is unused and in its original packaging.

Return procedure for CY9AF314NAPF-G-JNE1:

1.Submit a request within 90 days.

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

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