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Infineon Technologies CY7C64345-32LQXCT
- Part No.:
- CY7C64345-32LQXCT
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
CY7C64345-32LQXCT.pdf
- Description:
- IC MCU USB ENCORE CONTROL 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,545
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Product details
Overview
CY7C64345-32LQXCT from Infineon Technologies (formerly Cypress Semiconductor) is a full-speed USB 2.0 microcontroller with an integrated M8C Harvard-architecture CPU, 32 KB flash, 2048 bytes SRAM, and eight unidirectional + one bidirectional USB endpoint. It operates at up to 24 MHz, supports crystal-less USB operation with internal ±5% IMO, and delivers configurable I/O with hot-swappable capability on Port 1 - used in embedded human-interface devices like USB keyboards and industrial HID peripherals.
For engineers reviewing the CY7C64345-32LQXCT datasheet, CY7C64345-32LQXCT pinout, CY7C64345-32LQXCT application, or CY7C64345-32LQXCT equivalent, key selection criteria include USB 2.0 TID# 40000893 compliance, 512-byte dedicated USB SRAM, programmable LDO output (1.8/2.5/3.0 V) on Port 1, and support for I²C slave (up to 400 kHz) and SPI master/slave without clock stretching.
Technical Context
The CY7C64345-32LQXCT implements a full-speed USB 2.0 Serial Interface Engine (SIE) with automatic CRC generation/checking, address filtering, and ACK/NAK/Stall handshaking - offloading protocol handling from firmware. Its M8C core runs at up to 24 MHz and requires a 24 MHz system clock for maximum USB throughput.
System resources include a 10-bit ADC with temperature sensor integration, three 16-bit timers, watchdog/sleep timers, and dual oscillators: a 6/12/24 MHz internal main oscillator (IMO) with USB lock mode (±0.25% accuracy), and a 32 kHz internal low-speed oscillator (ILO) for ultra-low-power sleep modes consuming <100 µA during I²C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| USB Compliance | USB 2.0 Full-Speed (12 Mbps), TID# 40000893 certified - ensures interoperability with standard USB hosts without external transceiver. |
| CPU Core | M8C 8-bit Harvard architecture, up to 24 MHz - delivers 4 MIPS at 24 MHz with interrupt controller and low-power sleep modes. |
| Memory | 32 KB flash (50,000 erase/write cycles), 2048 bytes SRAM - supports field-upgradable firmware and real-time data buffering. |
| USB Buffer | 512 bytes dedicated SRAM - enables concurrent IN/OUT endpoint handling without CPU intervention during transfers. |
| Oscillator Accuracy | ±0.25% with USB-lock mode (no external crystal required) - eliminates BOM cost and layout complexity for USB timing. |
| I/O Capability | Up to 36 GPIO; Port 1 supports programmable LDO (1.8/2.5/3.0 V) and hot-swap - simplifies level-shifting and live-insertion in USB peripheral designs. |
| Communication Peripherals | I²C slave (50/100/400 kHz, hardware address detection), SPI master/slave (46.9 kHz–12 MHz) - enables direct connection to sensors and EEPROMs without bit-banging. |
Pinout & Package
Package: 32-pin QFN (5 mm × 5 mm, 0.5 mm pitch), thermally enhanced with exposed pad - optimized for compact USB peripheral PCBs requiring low thermal resistance and minimal footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | 3.15–3.45 V (USB active) or 3.0–5.5 V (non-USB); powers core, I/O, and USB transceiver regulator. |
| GND | Ground reference | Common return path for digital, analog, and USB sections; must connect to exposed thermal pad. |
| D+ / D− | USB differential data lines | Full-speed USB transceiver interface; require 22 Ω series resistors per line for impedance matching. |
| P1[0]–P1[7] | Port 1 I/O with LDO | Configurable as CMOS, open-drain, or high-Z; LDO output selectable (1.8/2.5/3.0 V) for mixed-voltage peripheral interfacing. |
| XIN / XOUT | Crystal/resonator interface | Optional external timing source; not required for USB operation due to crystal-less IMO with USB lock. |
| RESET | Active-low reset input | Asynchronous reset signal; internal pull-up; compatible with pushbutton or supervisor IC assertion. |
Key Features
| Feature | Design Value |
|---|---|
| Crystal-less USB operation | Internal 24 MHz IMO locked to USB data stream achieves ±0.25% accuracy - eliminates external crystal, reducing BOM count and layout area. |
| Hot-swappable Port 1 | Programmable LDO and configurable input thresholds allow safe live insertion into powered USB hubs - critical for docking stations and modular peripherals. |
| Dedicated 512-byte USB SRAM | Hardware-managed buffer space decouples USB packet handling from CPU execution - enables deterministic latency for HID report transfers. |
| I²C slave with hardware address recognition | Supports 7-bit addressing and automatic match detection - offloads address decode from firmware, reducing interrupt latency and code size. |
| Ultra-low-power I²C in sleep | Operates I²C slave at <100 µA during sleep - enables battery-powered USB peripherals to monitor sensors while maintaining USB suspend readiness. |
Applications
| USB Human Interface Device (HID) | Industrial Sensor Hub |
|---|---|
Use Scenario: Programmable USB keyboard with backlight control and media keys. IC Role / Device Role / Timing Role: Full-speed USB controller managing HID report descriptors, key matrix scanning, and LED PWM via GPIO. Use Value: Integrated 32 KB flash stores multiple HID profiles; crystal-less USB reduces component count; Port 1 LDO drives 3.3 V LEDs directly. | Use Scenario: DIN-rail mounted sensor aggregator collecting temperature, humidity, and analog voltage data. IC Role / Device Role / Timing Role: USB-to-sensor bridge with I²C slave interface to environmental sensors and 10-bit ADC for analog monitoring. Use Value: I²C hardware address detection enables multi-sensor daisy-chaining; <100 µA sleep current extends battery life in backup operation. |
| USB Docking Station | Medical Diagnostic Peripheral |
Use Scenario: Compact USB-C dock with legacy PS/2 and serial port emulation. IC Role / Device Role / Timing Role: USB device emulating multiple CDC ACM and HID classes simultaneously using eight endpoints. Use Value: Eight unidirectional + one bidirectional endpoint supports concurrent serial and HID traffic; hot-swappable Port 1 enables safe cable insertion/removal. | Use Scenario: Portable ECG front-end with USB data streaming and on-board battery voltage monitoring. IC Role / Device Role / Timing Role: USB data concentrator with 10-bit ADC sampling battery voltage and analog sensor signals. Use Value: ADC shares temp sensor core for calibrated measurements; dedicated USB SRAM ensures glitch-free real-time waveform transfer at 12 Mbps. |
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 |
|---|---|---|---|
| CP2102N-A02-GM | UART-to-USB bridge only; no native MCU core, flash, or ADC - requires external host MCU. | Limited to serial bridging; cannot run standalone HID firmware or perform sensor processing. | Select when only USB-to-serial conversion is needed; avoid if autonomous operation or firmware customization is required. |
| STM32F072CBT6 | ARM Cortex-M0, 128 KB flash, USB 2.0 FS, but requires external 8 MHz crystal for USB compliance and lacks crystal-less IMO. | Broad general-purpose use; higher code density and peripheral set, but larger BOM and layout complexity. | Select for complex applications needing RTOS, multiple communication stacks, or higher compute throughput - not for minimal-cost HID replacements. |
Compared with CP2102N-A02-GM and STM32F072CBT6, the CY7C64345-32LQXCT uniquely combines crystal-less USB timing, integrated M8C firmware execution, and hot-swappable I/O in a 32-pin QFN - making it optimal for cost-sensitive, self-contained USB peripherals where BOM reduction and live-connect reliability are primary design goals.
Availability
CY7C64345-32LQXCT is available at Aetrix Electronics and suitable for USB human-interface devices, industrial sensor hubs, docking stations, and medical diagnostic peripherals requiring stable component supply and long-term manufacturability.
Supply support for CY7C64345-32LQXCT 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.
This device belongs to the enCoRe™ V family - a line of low-cost, full-speed USB microcontrollers designed specifically to replace discrete USB interface ICs and legacy 8-bit MCUs in HID, industrial, and consumer peripherals.
FAQ
Does CY7C64345-32LQXCT require an external crystal for USB operation?
No. The device features an internal main oscillator (IMO) that locks to USB data stream timing, achieving ±0.25% accuracy without any external crystal or resonator. This eliminates two components and associated PCB layout constraints while maintaining full USB 2.0 compliance (TID# 40000893).
What is the maximum sink/source current capability of its GPIOs?
The device supports up to 25 mA sink per GPIO, with total limits of 60 mA on even-port pins and 60 mA on odd-port pins (120 mA aggregate). Source current is –5 mA on Ports 0–1 and –1 mA on Ports 2–4, capped at 20 mA total across all ports - sufficient for driving LEDs and small logic loads without external buffers.
Can CY7C64345-32LQXCT operate in USB suspend mode while monitoring I²C sensors?
Yes. Its I²C slave remains fully functional during deep-sleep modes with current draw below 100 µA. Hardware address recognition allows the device to wake only on valid transactions, enabling battery-powered peripherals to maintain sensor responsiveness without continuous CPU activity.
Is PSoC Designer™ software still supported for this part?
Yes. Although Cypress has transitioned to ModusToolbox™ for newer PSoC families, PSoC Designer™ v5.4 remains the officially supported, final-generation IDE for enCoRe™ V devices including CY7C64345-32LQXCT - with full compiler, debugger, and ISSP programming capability documented in datasheet 001-12394 Rev. *V.
CY7C64345-32LQXCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- enCoRe™ V
- Package/Case:
- 32-UFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Applications:
- USB Microcontroller
- Core Processor:
- M8C
- Program Memory Type:
- FLASH (16kB)
- Controller Series:
- CY7C643xx
- RAM Size:
- 1K x 8
- Interface:
- I2C, SPI, USB
- Number of I/O:
- 25
- Voltage - Supply:
- 3V ~ 5.5V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (5x5)
CY7C64345-32LQXCT FAQ
1.How can I place an order for CY7C64345-32LQXCT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY7C64345-32LQXCT 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 CY7C64345-32LQXCT reliable?
The price and inventory of CY7C64345-32LQXCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY7C64345-32LQXCT is usually 5 days.
3.What payment methods are accepted for CY7C64345-32LQXCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY7C64345-32LQXCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY7C64345-32LQXCT?
CY7C64345-32LQXCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY7C64345-32LQXCT 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 CY7C64345-32LQXCT?
For technical support, including CY7C64345-32LQXCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY7C64345-32LQXCT requirements.
6.How does Aetrix verify that CY7C64345-32LQXCT is sourced from the original manufacturer or authorized distributors?
All CY7C64345-32LQXCT 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 CY7C64345-32LQXCT meets industry standards.
7.What is the process for return or replacement of CY7C64345-32LQXCT?
All CY7C64345-32LQXCT units undergo pre-shipment inspection (PSI). If there is an issue with CY7C64345-32LQXCT, 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 CY7C64345-32LQXCT part is unused and in its original packaging.
Return procedure for CY7C64345-32LQXCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY7C64345-32LQXCT Tags
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