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Infineon Technologies CY8C3246PVI-122T
- Part No.:
- CY8C3246PVI-122T
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CY8C3246PVI-122T.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,955
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Product details
Overview
CY8C3246PVI-122T from Infineon Technologies (acquired Cypress Semiconductor) is a PSoC® 3 programmable system-on-chip integrating an 8051 CPU core, configurable analog and digital peripherals, 64 KB flash, 8 KB RAM, and CapSense® capacitive sensing capability. It operates from 1.71–5.5 V, supports up to 50 MHz clocking via internal PLL, and delivers ultra-low-power operation with 200 nA hibernate mode (RAM retention). It is used in human-interface embedded systems requiring mixed-signal integration and firmware-defined functionality.
For engineers reviewing the CY8C3246PVI-122T datasheet, CY8C3246PVI-122T pinout, CY8C3246PVI-122T application, or CY8C3246PVI-122T equivalent, key selection criteria include its 48-pin SSOP package, 29 GPIOs with analog routing flexibility, integrated Delta-Sigma ADC (12-bit, ±1 LSB INL), USB 2.0 FS interface, and support for PSoC Creator™ hardware/firmware co-design.
Technical Context
The CY8C3246PVI-122T implements a single-cycle 8051 CPU core running at up to 50 MHz, backed by a 24-channel DMA controller and nested vector interrupt controller for sub-2-cycle latency. Its digital subsystem includes four 16-bit TCPWM blocks, one certified USB 2.0 FS PHY, and a 24-UDB array enabling custom logic such as UART, SPI, LIN, PRS, CRC, and quadrature decoders.
Analog resources comprise an 8–12-bit Delta-Sigma ADC (66 dB SINAD, <100 µV offset), dual comparators, 8-bit DAC (1 Msps VDAC / 8 Msps IDAC), and 1.024 V ±1% reference. All analog signals route flexibly across 29 GPIO pins, supporting CapSense® on all I/Os and segment LCD drive (up to 46×16).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051, up to 50 MHz - enables real-time control with deterministic timing and low-latency ISR response. |
| Flash / RAM / EEPROM | 64 KB flash (with ECC), 8 KB SRAM, 2 KB EEPROM - supports bootloader updates, data logging, and secure firmware storage. |
| ADC Performance | 12-bit Delta-Sigma, ±1 LSB INL, 66 dB SINAD - suitable for precision sensor signal acquisition without external signal conditioning. |
| Digital Peripherals | 4× TCPWM, 1× I²C (1 Mbps), 1× USB 2.0 FS (12 Mbps), 24× UDB - allows full protocol stack implementation and custom state-machine logic in hardware. |
| Power Modes | 200 nA hibernate (RAM retention), 1 µA sleep (RTC active), 1.2 mA @ 6 MHz active - extends battery life in portable and energy-harvested systems. |
| I/O Flexibility | 29 GPIOs with per-pin analog/digital routing, CapSense®, LCD drive, and 25 mA sink on SIO - eliminates external level shifters and touch controller ICs. |
| Clock Sources | 3–24 MHz IMO (±2%), 4–25 MHz XTAL input, 50 MHz PLL, 32.768 kHz RTC support - enables precise timing for communication, sensing, and real-time scheduling. |
Pinout & Package
Package: 48-pin SSOP (PVI), 0.635 mm pitch, body size 15.4 × 7.6 mm. Thermal pad not present; standard leaded plastic package compatible with reflow and wave soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0–VDDIO3 | I/O voltage domain supplies | Enable independent 1.2–5.5 V I/O banks - supports multi-voltage system interfacing without external level shifters. |
| P0[0]–P0[7], P1[0]–P1[7], P2[3]–P2[7], P12[0]–P12[3], P15[0]–P15[7] | Configurable GPIO/SIO/USBIO | 29 total pins support analog input/output, digital logic, CapSense®, USB D+/D−, SWD debug, and crystal connections. |
| VDDA / VSSA | Analog power/ground | Separate analog supply domain - reduces digital noise coupling into ADC/DAC paths for high-precision measurements. |
| XTAL_IN / XTAL_OUT | External crystal oscillator terminals | Support 4–25 MHz crystal for accurate clock source - required for USB timing compliance and RTC accuracy. |
| SWDIO / SWDCK / SWV | 2-wire Serial Wire Debug interface | Enables full programming, breakpoint, and trace debugging using only two pins - minimizes debug footprint in space-constrained designs. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Analog Subsystem | On-die 12-bit Delta-Sigma ADC + dual comparators + 8-bit DAC - replaces discrete op-amp, filter, and converter circuits in sensor front-ends. |
| UDB-Based Digital Flexibility | 24 Universal Digital Blocks enable hardware-level implementation of UART, SPI, PWM sequencers, PRS, and CRC - offloads CPU and improves determinism. |
| CapSense® Integration | All 29 GPIOs support self- and mutual-capacitance sensing - eliminates dedicated touch controller IC and reduces BOM cost in HMI applications. |
| Multi-Voltage I/O Architecture | Four independent VDDIO domains with programmable thresholds - simplifies interfacing with legacy 3.3 V, 2.5 V, or 1.8 V peripherals. |
| Integrated USB 2.0 FS PHY | TID#40770053 certified, 12 Mbps, uses internal oscillator - enables HID, CDC, and vendor-class device implementations without external transceiver. |
Applications
| Industrial Human-Machine Interface | Medical Sensor Node |
|---|---|
|
Use Scenario: Touch-enabled control panel for HVAC or PLC operator interface with LED status feedback and local data logging. IC Role / Device Role / Timing Role: Central programmable controller handling CapSense® button detection, 12-bit temperature/humidity ADC sampling, and USB-based configuration upload. Use Value: Single-chip integration reduces PCB area by >40% versus discrete MCU + touch controller + ADC solution while maintaining <1 ms touch response latency. |
Use Scenario: Portable blood glucose meter with electrochemical sensor interface, LCD display, and USB data export. IC Role / Device Role / Timing Role: Signal conditioner (Delta-Sigma ADC with programmable gain), LCD driver (46×16 segments), and USB HID endpoint for calibration data transfer. Use Value: Integrated 1.024 V ±1% reference and low-noise analog routing achieve <0.5% measurement accuracy without trimming resistors or external references. |
| Energy-Harvesting Remote Sensor | Smart Home Lighting Controller |
|
Use Scenario: Solar-powered occupancy sensor node with PIR input, ambient light ADC, and BLE gateway interface (via UART to companion radio). IC Role / Device Role / Timing Role: Ultra-low-power system manager: wakes on interrupt, samples sensors using DMA-triggered ADC, stores events in EEPROM, then returns to 200 nA hibernate. Use Value: 200 nA hibernate with RAM retention preserves context across months of battery-free operation - eliminates supercapacitor or backup battery requirements. |
Use Scenario: Dimmable LED driver with touch slider, color temperature adjustment, and DALI/0–10 V compatibility via configurable I/O. IC Role / Device Role / Timing Role: Mixed-signal controller generating 16-bit PWM for smooth dimming, interpreting CapSense® slider position, and translating analog voltage inputs to digital commands. Use Value: Four independent VDDIO domains allow direct connection to 0–10 V analog control lines and 3.3 V DALI transceivers without level-shifting components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C3247FVI-142 | 68-QFN package, 48 GPIOs, same core/peripherals but higher pin count and no USBIO - lacks integrated USB PHY. | Suitable for space-constrained industrial controllers needing more I/O but no USB connectivity. | Select when board layout requires QFN thermal performance and USB is replaced by UART-to-USB bridge. |
| CY8C4046LQI-SX4 | PSoC 4 (ARM Cortex-M0+), 48-QFN, 32 KB flash, no USB FS PHY, lower analog precision (12-bit SAR ADC, no Delta-Sigma). | Better for cost-sensitive, high-throughput digital control where analog accuracy <66 dB SINAD is acceptable. | Choose for new designs prioritizing ARM ecosystem compatibility and lower unit cost over legacy 8051 toolchain and ultra-high analog fidelity. |
Compared with CY8C3246PVI-122T, CY8C3247FVI-142 offers greater I/O scalability in QFN but sacrifices USB integration, while CY8C4046LQI-SX4 trades Delta-Sigma ADC fidelity and 8051 deterministic timing for ARM software portability and reduced bill-of-materials in non-precision sensing roles.
Availability
CY8C3246PVI-122T is available at Aetrix Electronics and suitable for industrial HMI, portable medical devices, and energy-harvesting sensor nodes requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade alternatives.
Supply support for CY8C3246PVI-122T 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 manufactures and supports the full PSoC® portfolio, including legacy PSoC 3 devices. Infineon is a global semiconductor leader focused on power systems, automotive, and IoT solutions.
CY8C3246PVI-122T belongs to the PSoC® 3 family - a line of configurable mixed-signal SoCs designed for embedded control applications demanding flexible analog/digital integration, ultra-low-power operation, and rapid hardware-software co-development.
FAQ
Does CY8C3246PVI-122T support USB device enumeration without external crystal?
Yes. The device includes a TID#40770053-certified USB 2.0 Full-Speed PHY that operates using the internal 3–24 MHz IMO as clock source, eliminating need for external 12 MHz crystal in basic HID or CDC applications. For strict USB timing compliance under variable temperature, external 12 MHz crystal is recommended.
What is the maximum number of simultaneous CapSense® electrodes supported?
CY8C3246PVI-122T supports up to 62 CapSense® electrodes, but physical pin count limits concurrent use to 29 GPIOs. All 29 pins can be configured for self-capacitance sensing; mutual-capacitance requires dedicated TX/RX routing, reducing practical electrode count to ≤24 depending on layout and scan speed requirements.
Can the internal Delta-Sigma ADC perform continuous conversions while CPU is in sleep mode?
Yes. The ADC can be triggered by hardware events (e.g., timer, comparator output) and store results directly to memory via DMA without CPU intervention. In sleep mode (1 µA), the ILO clock keeps the ADC operational at reduced sample rates; full-speed conversion (up to 1 MSPS) requires active CPU clock domain.
Is the 48-SSOP package RoHS-compliant and lead-free?
Yes. CY8C3246PVI-122T in 48-SSOP (PVI) packaging meets RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3. Lead-free matte tin finish is standard; full compliance documentation is available in Infineon's product change notices and material declarations.
CY8C3246PVI-122T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Series:
- PSOC™ 3 CY8C32xx
- Packaging:
- Tape & Reel (TR)
- 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:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x12b; D/A 1x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3246PVI-122T FAQ
1.How can I place an order for CY8C3246PVI-122T through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3246PVI-122T 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 CY8C3246PVI-122T reliable?
The price and inventory of CY8C3246PVI-122T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3246PVI-122T is usually 5 days.
3.What payment methods are accepted for CY8C3246PVI-122T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3246PVI-122T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3246PVI-122T?
CY8C3246PVI-122T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3246PVI-122T 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 CY8C3246PVI-122T?
For technical support, including CY8C3246PVI-122T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3246PVI-122T requirements.
6.How does Aetrix verify that CY8C3246PVI-122T is sourced from the original manufacturer or authorized distributors?
All CY8C3246PVI-122T 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 CY8C3246PVI-122T meets industry standards.
7.What is the process for return or replacement of CY8C3246PVI-122T?
All CY8C3246PVI-122T units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3246PVI-122T, 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 CY8C3246PVI-122T part is unused and in its original packaging.
Return procedure for CY8C3246PVI-122T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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