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

Infineon Technologies CY7C64316-16LKXC

Name: CY7C64316-16LKXC
Brand: Infineon Technologies
SKU: CY7C64316-16LKXC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CY7C64316-16LKXC

Manufacturer:: Infineon Technologies

Category:: Application Specific Microcontrollers

Package:: 16-UFQFN

Datasheet:: CY7C64316-16LKXC.pdf

Description:: IC MCU USB ENCORE CONTROL 16QFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

CY7C64316-16LKXC from Infineon Technologies (formerly Cypress Semiconductor) is a full-speed USB 2.0 microcontroller with an M8C Harvard-architecture CPU, 32 KB flash, 2048 bytes SRAM, and integrated USB transceiver supporting 12 Mbps operation without external crystal. It operates at up to 24 MHz, supports 3.15–3.45 V or 4.35–5.25 V USB-supply ranges, and delivers hot-swappable I/O on Port 1 for industrial human-interface devices.

For engineers reviewing the CY7C64316-16LKXC datasheet, CY7C64316-16LKXC pinout, CY7C64316-16LKXC application, or CY7C64316-16LKXC equivalent, key selection criteria include its crystal-less USB timing compliance (TID# 40000893), programmable LDO output on Port 1 (1.8/2.5/3.0 V), 36 GPIO with 25 mA sink per pin, and hardware-accelerated I²C slave with address recognition and sub-100 µA sleep-mode operation.

Technical Context

The CY7C64316-16LKXC integrates a 24 MHz M8C core with dedicated USB Serial Interface Engine (SIE) that handles CRC generation/checking, token decoding, ACK/NAK handshaking, and SOF frame counting autonomously-reducing firmware overhead. Its internal main oscillator (IMO) achieves ±0.25% accuracy when locked to USB data stream, eliminating need for external crystal.

System resources include three 16-bit timers, 10-bit ADC with temperature sensor interface, configurable I²C slave (50/100/400 kHz, no clock stretching), SPI master/slave (46.9 kHz–12 MHz), and programmable digital I/O on Port 1 with selectable input threshold and regulated output voltage-enabling direct interfacing with mixed-voltage peripherals.

Key Specifications

Parameter	Value and Actual Design Meaning
USB Speed	Full-Speed USB 2.0 compliant at 12 Mbps; TID# 40000893 certified
CPU Core	M8C Harvard architecture, 4 MIPS @ 24 MHz; supports dynamic clock scaling during USB operation
Memory	32 KB flash (50,000 erase/write cycles), 2048 bytes SRAM; supports in-system serial programming (ISSP)
USB Buffer	Dedicated 512-byte SRAM for USB endpoints; eight unidirectional + one bidirectional control endpoint
Operating Voltage (USB)	3.15–3.45 V (3.3 V system) or 4.35–5.25 V (5.0 V system); internal regulator enables crystal-less operation
I/O Capability	Up to 36 GPIO; 25 mA sink per pin; 120 mA total sink; CMOS drive with -5 mA source on Ports 0–1
ADC	10-bit successive-approximation ADC; supports battery voltage monitoring and on-die temperature sensing

Pinout & Package

Package: 48-pin QFN (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Power supply input	Primary power rail for core and I/O; accepts 3.15–3.45 V or 4.35–5.25 V depending on USB mode
VSS	Ground reference	Digital ground return for all internal circuits and I/O drivers
D+ / D−	USB differential pair	Full-speed USB transceiver interface; requires 22 Ω series resistors externally per USB spec
P1[0]–P1[7]	Programmable I/O port	Hot-swappable; supports selectable LDO output (1.8/2.5/3.0 V) and configurable input threshold
XRES	External reset input	Active-low asynchronous reset; internal pull-up ensures reliable startup without external component
XTAL_IN / XTAL_OUT	Crystal oscillator interface	Optional external crystal/resonator connection; not required for USB operation due to IMO lock capability

Key Features

Feature	Design Value
Crystal-less USB timing	Internal 24 MHz IMO achieves ±0.25% accuracy via USB data lock-eliminates external crystal and associated BOM cost
Hot-swappable I/O	Port 1 pins support live insertion/removal with programmable LDO and input threshold-enables robust USB peripheral docking systems
Hardware I²C slave	Supports 50/100/400 kHz modes with hardware address detection and <100 µA operation in sleep-no firmware polling needed
Dedicated USB SIE	Offloads CRC, token decode, handshake generation, and buffer management-reduces CPU interrupt load by >70% vs software-only stacks
Configurable drive strength	Per-pin CMOS drive modes with 25 mA sink and -5 mA source on Ports 0–1-supports direct LED driving and mixed-voltage logic interfacing

Applications

USB Human Interface Device (HID)

Industrial Control Panel

Use Scenario: Programmable keyboard, mouse, or custom HID device connecting directly to PC or embedded host via USB.

IC Role / Device Role / Timing Role: Full-speed USB peripheral controller managing enumeration, report transfers, and low-latency interrupt IN/OUT endpoints.

Use Value: Eliminates external USB PHY and microcontroller; leverages built-in SIE and 24 MHz IMO for deterministic 12 Mbps timing without crystal.

Use Scenario: Front-panel interface for PLC or HMI with pushbuttons, LEDs, and status indicators operating in harsh industrial environments.

IC Role / Device Role / Timing Role: USB-connected local I/O concentrator with hot-swappable Port 1 enabling field-replaceable modules.

Use Value: Programmable LDO on Port 1 powers 1.8 V or 2.5 V sensors/indicators; 25 mA sink per pin drives LEDs directly without external drivers.

USB-to-Serial Bridge

Battery-Powered Sensor Node

Use Scenario: Legacy RS-232/RS-485 equipment connected to modern USB hosts using compact, low-BOM bridge adapter.

IC Role / Device Role / Timing Role: USB peripheral with configurable UART-like I/O mapping via GPIO and SPI/I²C peripherals.

Use Value: Hardware SPI master/slave and I²C slave enable seamless integration with legacy bus transceivers; ISSP allows field firmware updates.

Use Scenario: Portable environmental monitor logging temperature, voltage, and humidity before uploading via USB.

IC Role / Device Role / Timing Role: Low-power USB peripheral with integrated 10-bit ADC and temperature sensor for autonomous measurement.

Use Value: Sub-100 µA I²C slave operation in sleep mode extends battery life; on-die temperature sensor eliminates external thermal IC.

Equivalent & Alternatives

The following parts are listed as comparable options for similar full-speed USB microcontroller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SLAB8051F32GQ	8051 core, 32 KB flash, 2 KB RAM; requires external 12 MHz crystal for USB; no integrated LDO on I/O ports	Lacks hot-swappable I/O and programmable Port 1 regulation; higher BOM count for crystal and level-shifting	Preferred where 8051 toolchain familiarity outweighs crystal-free advantage and mixed-voltage I/O needs
STM32F072CBT6	Cortex-M0 core, 128 KB flash, 16 KB RAM; USB 2.0 FS with internal PHY; requires external 48 MHz crystal or HSE bypass	Higher performance and memory; lacks crystal-less USB timing and dedicated hot-swap I/O regulation	Chosen for complex firmware requiring RTOS or large code footprint; adds crystal and decoupling complexity

Compared with SLAB8051F32GQ and STM32F072CBT6, CY7C64316-16LKXC uniquely combines crystal-less USB timing, hot-swappable regulated I/O, and hardware I²C address recognition-making it optimal for cost-sensitive, space-constrained HID and industrial interface designs where BOM reduction and live module replacement are critical.

Availability

CY7C64316-16LKXC is available at Aetrix Electronics and suitable for USB human-interface devices, industrial control panels, USB-to-serial bridges, and battery-powered sensor nodes requiring stable component supply across extended product lifecycles.

Supply support for CY7C64316-16LKXC 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 global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive MCUs, and secure connectivity solutions.

CY7C64316-16LKXC belongs to the enCoRe™ V family-designed specifically to replace discrete USB interface components with a single, low-cost, programmable full-speed USB microcontroller for HID, industrial I/O, and embedded bridge applications.

FAQ

Does CY7C64316-16LKXC require an external crystal for USB operation?

No. The device uses an internal main oscillator (IMO) that locks to USB data stream for ±0.25% accuracy, eliminating need for external crystal. External crystal/resonator pins (XTAL_IN/XTAL_OUT) are optional and unused in crystal-less configuration.

What is the maximum sink current capability of Port 1 pins?

Each Port 1 pin supports 25 mA sink current. Total sink current across all Port 1 pins is limited to 60 mA. This rating applies under specified thermal conditions and is validated per DC electrical characteristics in Rev. *V datasheet.

Can CY7C64316-16LKXC operate in USB suspend mode while maintaining I²C slave functionality?

Yes. The I²C slave remains active and responsive to address matches during USB suspend, drawing less than 100 µA. This enables wake-up via I²C traffic while USB is suspended-critical for low-power sensor hub applications.

How is the 10-bit ADC calibrated for temperature sensing?

The ADC uses an on-die temperature sensor diode as default input. Calibration is factory-trimmed and stored in flash; firmware accesses raw ADC codes and applies linear correction coefficients provided in the device's trim register map to derive Celsius values.

CY7C64316-16LKXC Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: enCoRe™ V

Package/Case:: 16-UFQFN

Packaging:: Tray

Product Status:: Obsolete

Programmable:: Not Verified

Applications:: USB Microcontroller

Core Processor:: M8C

Program Memory Type:: FLASH (32kB)

Controller Series:: CY7C643xx

RAM Size:: 2K x 8

Interface:: I2C, SPI, USB

Number of I/O:: 11

Voltage - Supply:: 3V ~ 5.5V

Operating Temperature:: 0°C ~ 70°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-QFN (3x3)

CY7C64316-16LKXC FAQ

1.How can I place an order for CY7C64316-16LKXC through Aetrix?

Please submit a Request for Quotation (RFQ) for CY7C64316-16LKXC 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 CY7C64316-16LKXC reliable?

The price and inventory of CY7C64316-16LKXC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C64316-16LKXC is usually 5 days.

3.What payment methods are accepted for CY7C64316-16LKXC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C64316-16LKXC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CY7C64316-16LKXC?

CY7C64316-16LKXC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CY7C64316-16LKXC 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 CY7C64316-16LKXC?

For technical support, including CY7C64316-16LKXC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C64316-16LKXC requirements.

6.How does Aetrix verify that CY7C64316-16LKXC is sourced from the original manufacturer or authorized distributors?

All CY7C64316-16LKXC 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 CY7C64316-16LKXC meets industry standards.

7.What is the process for return or replacement of CY7C64316-16LKXC?

All CY7C64316-16LKXC units undergo pre-shipment inspection (PSI). If there is an issue with CY7C64316-16LKXC, 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 CY7C64316-16LKXC part is unused and in its original packaging.

Return procedure for CY7C64316-16LKXC:

1.Submit a request within 90 days.

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

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