My Inquiry
My Account
Infineon Technologies CY8C3445LTI-079
- Part No.:
- CY8C3445LTI-079
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
CY8C3445LTI-079.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,957
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C3445LTI-079 from Infineon Technologies (formerly Cypress Semiconductor) is a programmable 8-bit PSoC® 3 system-on-chip integrating an 8051 CPU, configurable analog/digital peripherals, 64 KB flash, 8 KB RAM, and full CAN 2.0b interface. It operates from 1.71–5.5 V at up to 50 MHz, supports CapSense® for up to 62 sensors, and delivers ultra-low-power operation with 200-nA hibernate mode. Used in industrial HMI, medical sensor hubs, and automotive body control modules requiring mixed-signal integration and field reprogrammability.
For engineers reviewing the CY8C3445LTI-079 datasheet, CY8C3445LTI-079 pinout, CY8C3445LTI-079 application, or CY8C3445LTI-079 equivalent, key selection criteria include its 48-pin TQFP package, integrated USB 2.0 Full-Speed peripheral, dual opamps, 12-bit delta-sigma ADC, and support for PSoC Creator™ schematic-based design flow.
Technical Context
The CY8C3445LTI-079 implements a highly flexible mixed-signal architecture centered on a 50-MHz 8051 core with 24-channel DMA and programmable digital routing via Digital System Interconnect (DSI). Its analog subsystem includes two SC/CT blocks supporting PGA, TIA, and mixer configurations, plus four comparators and a 1.024-V ±1% internal reference.
Digital flexibility stems from 24 Universal Digital Blocks (UDBs), enabling user-defined peripherals such as UART, SPI, LIN, CRC, quadrature decoders, and gate-level logic - all routable to any GPIO. Clocking combines a 3–62-MHz IMO, PLL, external crystal options, and 12 dividers distributed across the chip.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 8-bit 8051 running up to 50 MHz with 32 interrupt inputs and hardware DMA controller |
| Memory | 64 KB flash (with ECC support), 8 KB SRAM, 2 KB EEPROM - enables secure firmware updates and data logging |
| Analog Peripherals | Configurable 8–12-bit delta-sigma ADC, two 8-bit DACs, four comparators, two opamps, two SC/CT blocks |
| Digital Interfaces | Full CAN 2.0b (16 Rx/8 Tx buffers), I²C (1 Mbps), USB 2.0 Full-Speed (12 Mbps), four TCPWM blocks |
| Power Performance | 200 nA hibernate mode with RAM retention; 1.2 mA active @ 6 MHz; 12 mA @ 48 MHz - suitable for battery-powered edge nodes |
| I/O System | 48-pin TQFP package with 36 GPIOs, eight SIO pins (25 mA sink, overvoltage tolerant), USBIO pins, and full peripheral-to-pin routing |
| Operating Range | 1.71–5.5 V supply; –40°C to +85°C ambient; six independent power domains for mixed-voltage I/O |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free, surface-mount.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual-domain power pins supporting independent analog/digital voltage rails |
| P0[0]–P0[7] | General-purpose I/O | Routable to any digital/analog peripheral; support CapSense®, LCD drive, and USBIO alternate functions |
| P1[0]–P1[7] | General-purpose I/O | Include SIO-capable pins with programmable thresholds, hot-swap tolerance, and comparator input capability |
| XTAL_IN / XTAL_OUT | Crystal oscillator interface | Supports 4–25 MHz external crystal for precise timing or RTC operation with 32.768-kHz watch crystal option |
| USB_DP / USB_DM | USB 2.0 Full-Speed differential pair | Integrated transceiver with internal 1.5-kΩ pull-up; requires no external PHY - reduces BOM count |
| TCK / TDO / TDI / TMS | JTAG debug interface | 4-wire boundary scan and programming interface compatible with standard ICE tools and MiniProg3 |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Blocks | Two SC/CT blocks enable user-configured transimpedance amplifiers (TIA) or programmable gain amplifiers (PGA) without external components |
| CapSense® Integration | Hardware-accelerated capacitive sensing engine supporting up to 62 self- or mutual-capacitance sensors with noise immunity |
| Flexible Clocking | Multiple clock sources (IMO, PLL, crystal, ILO) with 12 programmable dividers - allows independent clock domains per peripheral |
| UDB-Based Peripherals | 24 Universal Digital Blocks support drag-and-drop creation of custom digital logic (e.g., PRS generators, CRC engines, quadrature decoders) |
| Secure Flash Architecture | Flash security features including read protection, write protection, and secure boot loader support for firmware integrity enforcement |
Applications
| Industrial HMI Panel | Medical Sensor Hub |
|---|---|
Use Scenario: Touch-enabled control panel for PLC interfaces with LED status feedback and serial communication to host controllers. IC Role / Device Role / Timing Role: Central mixed-signal controller managing CapSense® buttons, analog sensor inputs, CAN bus messaging, and real-time PWM-driven indicators. Use Value: Single-chip integration eliminates discrete opamps, comparators, and interface ICs while enabling field-upgradable UI logic via bootloader. | Use Scenario: Portable patient monitor aggregating ECG, temperature, and SpO₂ signals with local display and Bluetooth gateway handoff. IC Role / Device Role / Timing Role: Signal-conditioning and data acquisition hub using delta-sigma ADC, PGA, and TIA blocks for low-noise biopotential amplification. Use Value: On-chip analog configurability avoids precision external components; 200-nA hibernate extends battery life between measurements. |
| Automotive Body Control | Smart Home Gateway |
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting with LIN/CAN interconnect. IC Role / Device Role / Timing Role: CAN 2.0b node with 16 Rx/8 Tx buffers handling multiplexed messages; UDBs implement LIN physical layer and PWM dimming logic. Use Value: Hardware CAN controller offloads CPU; SIO pins tolerate load-dump transients up to ±25 V - meets automotive robustness requirements. | Use Scenario: Zigbee/Z-Wave bridge device collecting sensor data from HVAC, occupancy, and environmental nodes before forwarding to cloud. IC Role / Device Role / Timing Role: Low-power coordinator managing multiple I²C sensor interfaces, USB configuration port, and secure flash storage for OTA update staging. Use Value: Integrated USB FS peripheral simplifies factory provisioning; ECC flash ensures reliable firmware storage across thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C3446LTI-079 | Same package and core, but adds USBIO support on P0[6]/P0[7]; identical memory and analog resources | Required when USB enumeration must occur without external level-shifting or dedicated USBIO pins | Select only if USB device-mode operation with native D+/D− routing is mandatory |
| CY8C3445LTI-069 | Same silicon, lower max frequency (40 MHz vs. 50 MHz); same peripherals, flash, and power specs | Suitable for cost-sensitive designs where 40-MHz CPU performance suffices and USB timing margins are relaxed | Prefer for non-USB, lower-clock-rate applications to reduce EMI and dynamic power |
Compared with CY8C3445LTI-079, the -069 variant trades 10 MHz CPU headroom for marginally lower cost and EMI, while the -079's sibling -079 offers identical performance with enhanced USB routing - making the -079 optimal for USB-integrated embedded controllers needing full-speed device functionality.
Availability
CY8C3445LTI-079 is available at Aetrix Electronics and suitable for industrial HMI panels, medical sensor hubs, and automotive body control modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for CY8C3445LTI-079 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 acquired Cypress Semiconductor in 2020 and now owns and supports the full PSoC® portfolio, delivering high-reliability semiconductor solutions for automotive, industrial, and IoT markets.
The CY8C34 family belongs to Infineon's PSoC® 3 programmable SoC product line, designed specifically for embedded applications demanding configurable analog/digital integration, ultra-low-power operation, and rapid firmware-hardware co-design using PSoC Creator™.
FAQ
What development tools are required to program the CY8C3445LTI-079?
PSoC Creator™ IDE (free download from Infineon) is the official development environment, providing schematic capture, component library integration, C code generation, and debug support. Programming requires MiniProg3 or KitProg debugger; JTAG/SWD interfaces are supported. Keil 8051 compiler is bundled, and no license fees apply for standard use.
Does the CY8C3445LTI-079 support USB device enumeration without external components?
Yes - it integrates a full-speed USB 2.0 transceiver compliant with TID#40770053. Internal 1.5-kΩ pull-up on D+ enables enumeration; no external PHY, resistors, or crystals are needed beyond the required 12-MHz clock source (internal IMO or external crystal).
Can the analog subsystem perform simultaneous multi-channel acquisition?
Yes - the delta-sigma ADC supports up to 20-bit effective resolution with programmable sample rates and sequencer-controlled channel scanning. Combined with DMA, it enables continuous background acquisition across up to 16 channels without CPU intervention.
Is the CY8C3445LTI-079 qualified for automotive applications?
No - it is rated for industrial temperature range (–40°C to +85°C) and not AEC-Q100 qualified. While used in some automotive body electronics, it lacks automotive-specific qualification, fault injection testing, and extended temperature screening. For certified automotive use, consider Infineon's AURIX™ or automotive-grade PSoC™ variants.
CY8C3445LTI-079 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 68-VFQFN Exposed Pad
- Series:
- PSOC™ 3 CY8C34xx
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 50MHz
- Connectivity:
- EBI/EMI, I2C, LINbus, SPI, UART/USART
- Peripherals:
- CapSense, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 38
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 1K x 8
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x12b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3445LTI-079 FAQ
1.How can I place an order for CY8C3445LTI-079 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3445LTI-079 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 CY8C3445LTI-079 reliable?
The price and inventory of CY8C3445LTI-079 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3445LTI-079 is usually 5 days.
3.What payment methods are accepted for CY8C3445LTI-079?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3445LTI-079 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3445LTI-079?
CY8C3445LTI-079 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3445LTI-079 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 CY8C3445LTI-079?
For technical support, including CY8C3445LTI-079 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3445LTI-079 requirements.
6.How does Aetrix verify that CY8C3445LTI-079 is sourced from the original manufacturer or authorized distributors?
All CY8C3445LTI-079 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 CY8C3445LTI-079 meets industry standards.
7.What is the process for return or replacement of CY8C3445LTI-079?
All CY8C3445LTI-079 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3445LTI-079, 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 CY8C3445LTI-079 part is unused and in its original packaging.
Return procedure for CY8C3445LTI-079:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C3445LTI-079 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
