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Infineon Technologies CY8C3445PVI-094
- Part No.:
- CY8C3445PVI-094
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CY8C3445PVI-094.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:600
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Product details
Overview
CY8C3445PVI-094 from Infineon Technologies (formerly Cypress) is a programmable 8-bit PSoC® 3 system-on-chip integrating an 8051 CPU, 64 KB flash, 8 KB RAM, full CAN 2.0b interface, USB 2.0 Full-Speed peripheral, and configurable analog/digital peripherals in a 48-pin SSOP package. It operates from 1.71–5.5 V at up to 50 MHz and supports CapSense® for touch interfaces in industrial HMI applications.
For engineers reviewing the CY8C3445PVI-094 datasheet, CY8C3445PVI-094 pinout, CY8C3445PVI-094 application, or CY8C3445PVI-094 equivalent, key selection criteria include its integrated CAN+USB dual-interface capability, 24-channel UDB programmability, ultra-low-power hibernate mode (200 nA), and support for mixed-signal embedded control with on-chip opamps, ADCs, and DACs.
Technical Context
The CY8C3445PVI-094 implements a highly configurable architecture centered on a 8051 CPU core running at up to 50 MHz with DMA support, paired with 24 universal digital blocks (UDBs) that enable custom logic synthesis-including UART, SPI, LIN, CRC, PRS, and quadrature decoders-routed flexibly across 29 GPIOs. Its analog subsystem includes two opamps, four comparators, two 8-bit DACs, and a configurable delta-sigma ADC.
It features dual clock domains: a precision 3–62 MHz internal main oscillator (2% accuracy at 3 MHz) and low-power 1/33/100 kHz ILO, plus PLL-based clock generation, 32.768-kHz RTC support, and 12 programmable clock dividers distributed to all peripherals. Power management includes active (1.2 mA @ 6 MHz), sleep (1 µA), and hibernate (200 nA w/ RAM retention) modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | 8-bit 8051, 50 MHz max operation - enables deterministic real-time control with legacy 8051 toolchain compatibility. |
| Memory | 64 KB flash + 8 KB RAM + 2 KB EEPROM - sufficient for firmware, data logging, and secure parameter storage in standalone edge nodes. |
| Digital Peripherals | Full CAN 2.0b (16 Rx/8 Tx buffers) + USB 2.0 FS (12 Mbps) - supports dual-bus communication without external transceivers or PHYs. |
| Analog Resources | Configurable 8–12-bit delta-sigma ADC + 2×8-bit DAC + 2 opamps + 4 comparators - enables closed-loop sensor signal conditioning and actuator drive. |
| Power Modes | Hibernate at 200 nA with RAM retention - allows battery-powered devices to maintain state during multi-year standby. |
| I/O Flexibility | 29 GPIOs with full analog/digital peripheral routing + 8 SIO pins (25 mA sink, overvoltage tolerant) - simplifies PCB layout and enables direct high-drive sensor interfacing. |
| Operating Voltage | 1.71–5.5 V across up to six power domains - supports mixed-voltage subsystems (e.g., 1.8 V logic + 5 V analog sensors). |
Pinout & Package
This device is housed in a 48-pin SSOP (Shrink Small Outline Package) with 0.5 mm pitch, JEDEC MO-153 compliant, suitable for automated surface-mount assembly and industrial temperature operation (–40 °C to +85 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core supply input | Accepts 1.71–5.5 V; powers CPU, digital logic, and configurable analog blocks. |
| VSS | Ground reference | Primary digital/analog return path; requires low-impedance PCB plane for noise-sensitive analog operation. |
| P0[0]–P0[7] | General-purpose I/O | Programmable as digital/analog inputs/outputs; support CapSense®, LCD drive, and analog routing to ADC/DAC. |
| P1[0]–P1[7] | General-purpose I/O | Same flexibility as P0; P1[6]/P1[7] are dedicated USBIO pins supporting USB D+/D– signaling. |
| CAN_TX / CAN_RX | CAN bus interface | Dedicated differential pair routed internally to CAN controller; requires external transceiver for physical layer compliance. |
| XRES | External reset input | Active-low asynchronous reset; debounced internally; compatible with pushbutton or microcontroller-driven reset sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable UDB array (24 blocks) | Enables hardware-level customization of digital functions (e.g., custom UART with parity, multi-channel PWM with dead-time insertion) without FPGA gate count overhead. |
| CapSense® support (up to 62 sensors) | On-die capacitive sensing engine eliminates external touch controller ICs and reduces BOM cost in HMI designs. |
| Integrated boost regulator | Generates 5 V from as low as 0.5 V input - enables energy harvesting applications using single-cell batteries or piezoelectric sources. |
| Programmable analog blocks (SC/CT) | Allows implementation of PGA, TIA, mixer, or sample-and-hold circuits - replaces discrete opamp networks in sensor front-ends. |
| USB 2.0 Full-Speed peripheral | Self-contained USB interface with internal oscillator (no external crystal required) - reduces component count and board area in diagnostic or configuration interfaces. |
Applications
| Industrial Motor Control | Medical Patient Monitor |
|---|---|
|
Use Scenario: Compact motor driver with position feedback, fault monitoring, and CAN-based command interface in HVAC blowers. IC Role / Device Role / Timing Role: Central controller executing real-time PWM generation, analog current sensing, and CAN message handling. Use Value: Integrates PWM timers, opamps for current amplification, and CAN transceiver interface logic - eliminating 3–5 discrete ICs and reducing PCB footprint by >40%. |
Use Scenario: Portable ECG front-end with electrode biasing, lead-off detection, and USB data streaming to host PC. IC Role / Device Role / Timing Role: Analog signal conditioner (PGA + delta-sigma ADC) and USB data aggregator with on-chip firmware processing. Use Value: Uses internal opamps and programmable SC/CT blocks for electrode interface, avoiding external instrumentation amps and reducing noise susceptibility. |
| Automotive Body Control Module | Smart Home Touch Panel |
|
Use Scenario: Door module managing window lift, mirror adjustment, and interior lighting via LIN/CAN network. IC Role / Device Role / Timing Role: Mixed-signal node performing analog sensor reading (potentiometers, thermistors), LIN protocol stack, and CAN gateway functions. Use Value: Leverages UDBs to implement LIN 2.0 physical layer and protocol timing - avoids dedicated LIN transceiver and MCU co-processor. |
Use Scenario: Wall-mounted thermostat with capacitive touch buttons, ambient temperature/humidity sensing, and local display control. IC Role / Device Role / Timing Role: Capacitive touch controller (CapSense®), analog sensor interface, and LCD segment driver. Use Value: Drives 46×16 LCD segments directly from GPIOs while simultaneously scanning 12+ touch keys - no external display or touch controller required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C3446LTI-094 | 68-pin QFN package, 72 I/Os, same core/peripherals - adds 4 more GPIOs and enhanced thermal dissipation. | Suitable for space-constrained but thermally demanding applications requiring >29 I/Os or higher analog channel count. | Select when board layout allows QFN and additional I/O routing is needed; not pin-compatible with SSOP. |
| CY8C3866AXI-094 | PSoC 3 with 128 KB flash, 16 KB RAM, and extended analog resources (e.g., 12-bit SAR ADC, extra opamp) - higher memory and precision. | Better suited for firmware-intensive applications (e.g., OTA updates) or higher-resolution sensor acquisition (e.g., medical diagnostics). | Choose when >64 KB flash or ≥12-bit SAR ADC is required; shares same architecture but larger die and different package. |
Compared with CY8C3446LTI-094 and CY8C3866AXI-094, the CY8C3445PVI-094 offers optimal balance of compact SSOP packaging, CAN+USB integration, and ultra-low-power hibernate - making it ideal for cost-sensitive, space-constrained industrial and portable designs where 64 KB flash and 29 I/Os suffice.
Availability
CY8C3445PVI-094 is available at Aetrix Electronics and suitable for industrial motor control, portable medical devices, automotive body electronics, and smart home HMI systems requiring stable component supply, long-term lifecycle support, and qualified industrial temperature grade operation.
Supply support for CY8C3445PVI-094 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, industrial, and security solutions.
This device belongs to the PSoC® 3 family - designed specifically for highly integrated, low-power embedded control applications requiring flexible analog/digital resource allocation and rapid firmware-hardware co-design.
FAQ
Does CY8C3445PVI-094 support USB without an external crystal?
Yes. The device integrates an internal oscillator qualified for USB 2.0 Full-Speed operation (12 Mbps) and certified under TID#40770053. No external crystal is required for basic USB peripheral functionality, though an external 32.768-kHz crystal may be used for precise RTC timing.
What is the maximum number of CapSense® electrodes supported?
The CY8C3445PVI-094 supports up to 62 CapSense® sensors using its dedicated CapSense® CSD block and flexible GPIO routing. Electrode count depends on scan time budget and resolution settings - typical implementations achieve 24–48 electrodes with <100-ms response time.
Can the internal boost regulator power external circuitry?
No. The internal boost regulator is intended solely for on-chip analog subsystems (e.g., reference voltage generation). Its output is not accessible externally and cannot source current to off-die components. External loads require a separate DC-DC converter or LDO.
Is JTAG debug supported in all power modes?
JTAG is fully functional in Active and Sleep modes. In Hibernate mode, JTAG is disabled to preserve 200-nA quiescent current; debugging requires wake-up via interrupt or reset. SWD (Serial Wire Debug) is not supported - only JTAG (4-wire) and SWV (Single Wire Viewer) are implemented.
CY8C3445PVI-094 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Series:
- PSOC™ 3 CY8C34xx
- Packaging:
- Tube
- 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:
- 25
- 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:
CY8C3445PVI-094 FAQ
1.How can I place an order for CY8C3445PVI-094 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3445PVI-094 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 CY8C3445PVI-094 reliable?
The price and inventory of CY8C3445PVI-094 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3445PVI-094 is usually 5 days.
3.What payment methods are accepted for CY8C3445PVI-094?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3445PVI-094 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3445PVI-094?
CY8C3445PVI-094 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3445PVI-094 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 CY8C3445PVI-094?
For technical support, including CY8C3445PVI-094 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3445PVI-094 requirements.
6.How does Aetrix verify that CY8C3445PVI-094 is sourced from the original manufacturer or authorized distributors?
All CY8C3445PVI-094 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 CY8C3445PVI-094 meets industry standards.
7.What is the process for return or replacement of CY8C3445PVI-094?
All CY8C3445PVI-094 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3445PVI-094, 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 CY8C3445PVI-094 part is unused and in its original packaging.
Return procedure for CY8C3445PVI-094:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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