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Infineon Technologies CY8C3246PVI-122
- Part No.:
- CY8C3246PVI-122
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
CY8C3246PVI-122.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:600
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Product details
Overview
CY8C3246PVI-122 from Infineon (formerly 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® support. It operates from 1.71–5.5 V at up to 50 MHz, features 24-channel DMA, USB 2.0 FS interface, and 48-pin SSOP packaging - deployed in industrial HMI, sensor fusion nodes, and low-power medical wearables.
For engineers reviewing the CY8C3246PVI-122 datasheet, CY8C3246PVI-122 pinout, CY8C3246PVI-122 application, or CY8C3246PVI-122 equivalent, key selection criteria include its 48-pin SSOP footprint, integrated USBIO pins (D+/D−), 29 GPIOs with CapSense routing, and dual-voltage I/O domains (VDDIO0–VDDIO3) enabling mixed-signal interface consolidation without external level shifters.
Technical Context
The device implements a single-cycle 8051 CPU running at up to 50 MHz via internal PLL, supported by a 24-channel PHUB-based DMA controller that offloads data movement from CPU cycles. Its digital subsystem relies on 24 Universal Digital Blocks (UDBs) for reconfigurable logic - enabling UART, SPI, I²C, PWM, PRS, CRC, and quadrature decoding without fixed-function hardware.
Analog resources include an 8–12-bit Delta-Sigma ADC (±1 LSB INL, 66 dB SINAD), dual comparators, 8-bit DAC (1 MSPS VDAC / 8 MSPS IDAC), and 1.024 V ±1% reference - all routable to any GPIO. Clocking combines a 3–24 MHz IMO (±2% @ 3 MHz), 50 MHz PLL, 32.768 kHz RTC crystal support, and 12 programmable clock dividers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051, up to 50 MHz - enables real-time control with deterministic 1-cycle instruction execution. |
| Flash / RAM / EEPROM | 64 KB flash (with ECC), 8 KB SRAM, 2 KB EEPROM - supports bootloader updates, firmware persistence, and runtime parameter storage. |
| Analog-to-Digital Converter | Delta-Sigma ADC, 8–12-bit resolution, ±1 LSB INL, 66 dB SINAD - suitable for precision sensor signal acquisition (e.g., thermistor, strain gauge). |
| Digital Peripherals | 4× TCPWM modules, certified USB 2.0 FS (12 Mbps), I²C master/slave (1 Mbps), 24 UDBs - allows full protocol stack implementation (e.g., USB HID + I²C sensor hub) in one chip. |
| I/O System | 29 GPIOs + 8 SIOs, 4 independent VDDIO domains (1.2–5.5 V), CapSense® on all GPIOs - enables direct connection to diverse interfaces (e.g., 3.3 V sensors, 5 V displays, touch panels) without external voltage translation. |
| 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-harvesting applications. |
| Package & Pin Count | 48-pin SSOP (PVI), 7.6 × 12.8 mm body - compatible with standard through-hole PCB assembly and legacy test fixtures. |
Pinout & Package
48-pin SSOP (Shrink Small Outline Package), 0.635 mm pitch, exposed pad not present. Pin functions validated per CY8C3246PVI-122-specific pinout in Cypress Document #001-92498 (pp. 7–8).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDIO0 / VDDIO1 / VDDIO2 / VDDIO3 | I/O power domain supplies | Enable independent 1.2–5.5 V logic levels per pin group - critical for interfacing with heterogeneous peripherals (e.g., 1.8 V MCU, 5 V display driver). |
| P15[6] / P15[7] | USBIO D+ / D− | Integrated USB 2.0 Full-Speed physical layer - eliminates external transceiver; supports device enumeration and HID class operation out-of-box. |
| P0[6] | IDAC0 output | 8 MSPS current DAC - drives capacitive touch sensors directly or sources bias currents for analog front-ends without external op-amps. |
| P12[0] / P12[1] | I²C1 SCL / SDA | Dedicated hardware I²C bus - supports multi-master arbitration and 1 Mbps transfers for high-speed sensor data aggregation. |
| P1[3] | TDO / SWV | Serial Wire Viewer debug trace output - provides real-time printf-style logging over single-wire interface during development. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable UDB array (24 blocks) | Enables custom digital logic (e.g., 24-bit counter, LIN bus encoder, CRC-16 generator) without FPGA or ASIC - reduces BOM count and layout complexity. |
| CapSense® on all GPIOs | Supports up to 62 self- or mutual-capacitance touch buttons/sliders - eliminates dedicated touch controller IC and associated firmware drivers. |
| Programmable clock tree (12 dividers) | Routes IMO, PLL, or external crystal to any peripheral - simplifies timing-critical designs (e.g., synchronized ADC sampling + PWM generation). |
| Integrated boost regulator (VBOOST) | Generates 3.3 V or 5 V from 0.5 V input - powers external LCDs or sensors directly from coin cell or energy-harvesting sources. |
| SWD/SWV debug interface (3-pin) | Enables full programming, breakpoint, and trace capability using only TCK/TMS/SWDIO - reduces debug connector footprint and cost vs. 10-pin JTAG. |
Applications
| Industrial HMI Panel | Portable Medical Sensor Node |
|---|---|
|
Use Scenario: Touch-enabled control panel for HVAC or PLC interface with LED indicators and serial sensor backhaul. IC Role / Device Role / Timing Role: Central controller managing CapSense buttons, driving segment LCD via GPIO, and polling RS-485 sensors via UART implemented in UDB. Use Value: Single-chip integration replaces MCU + touch controller + display driver - cuts PCB area by 40% and eliminates inter-IC communication latency. |
Use Scenario: Battery-powered ECG/temperature patch transmitting data via BLE module (UART-connected) and detecting user touch for power-on. IC Role / Device Role / Timing Role: Low-power sensor aggregator with 12-bit ADC sampling at 1 kHz, CapSense wake-on-touch, and 200 nA hibernate mode between measurements. Use Value: 2-year coin-cell lifetime achieved via dynamic peripheral gating and sub-µA sleep states - no external PMIC or wake-up controller required. |
| Smart Home Lighting Controller | Automotive Cabin Sensor Hub |
|
Use Scenario: Dimmable LED driver with ambient light sensing, touch slider, and DALI bus interface. IC Role / Device Role / Timing Role: Analog front-end (ALS photodiode + ADC), CapSense slider, and DALI transceiver (UDB-implemented UART + isolation control). Use Value: Eliminates discrete op-amp, comparator, and UART ICs - reduces component count from 12 to 1 while maintaining Class B EMC compliance. |
Use Scenario: Occupancy and gesture detection module behind automotive center console trim. IC Role / Device Role / Timing Role: Multi-electrode CapSense engine with proximity wake, temperature-compensated ADC for cabin air quality sensors, and CAN message forwarding via external transceiver (SPI-connected). Use Value: Meets AEC-Q100 Grade 2 temp range (–40°C to +105°C) using internal thermal sensor and adaptive CapSense tuning - avoids costly automotive-grade external controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C3247FVI-144 | 68-QFN package, 48 GPIOs, higher flash (64 KB) and RAM (8 KB) - same core/peripherals but larger I/O count and thermal performance. | Preferred for space-constrained PCBs requiring >29 GPIOs or enhanced thermal dissipation in continuous USB host operation. | Select when board layout allows QFN and design requires >29 routed signals or sustained >30 mA USB load current. |
| CY8C4247LQI-BL483 | PSoC 4200 series (ARM Cortex-M0), 2.7–5.5 V, 48 MHz, 256 KB flash, 32 KB RAM - different architecture, no USB PHY, no boost regulator. | Suitable for ARM-based firmware ecosystems and higher memory needs, but lacks integrated USB and energy-harvesting boost capability. | Choose for new ARM toolchain adoption or when >64 KB code space is mandatory - avoid if USB device or sub-1 V energy harvesting is required. |
Compared with CY8C3246PVI-122, the CY8C3247FVI-144 offers expanded I/O and thermal headroom in QFN, while the CY8C4247LQI-BL483 trades USB/boost for ARM compatibility and larger memory - making the PVI-122 optimal for cost-sensitive, USB-integrated, battery-harvested designs in SSOP form factor.
Availability
CY8C3246PVI-122 is available at Aetrix Electronics and suitable for industrial HMI, portable medical devices, and smart lighting systems requiring stable component supply across extended product lifecycles.
Supply support for CY8C3246PVI-122 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, inheriting its PSoC® portfolio - a leader in configurable mixed-signal SoCs for embedded control and human interface applications.
CY8C3246PVI-122 belongs to the PSoC® 3 family, designed specifically for ultra-low-power, mixed-signal embedded systems where analog flexibility, USB connectivity, and rapid prototyping with PSoC Creator™ are critical.
FAQ
Does CY8C3246PVI-122 support USB device enumeration without external components?
Yes. The part integrates a certified USB 2.0 Full-Speed physical layer (TID#40770053) with internal termination and pull-up resistors on P15[6]/P15[7]. It enumerates as a USB device using only the onboard oscillator - no external crystal, transceiver, or resistors are required for basic HID or CDC class operation.
Can all 29 GPIOs be used simultaneously for CapSense® sensing?
Yes. All GPIO pins support CapSense® functionality, and the device's SmartSense™ auto-tuning algorithm dynamically adjusts scan parameters for up to 62 electrodes. However, simultaneous use of all 29 pins for sensing requires careful routing to minimize mutual capacitance and guard ring implementation per AN85951 guidelines.
What is the maximum sustained current capability of the integrated boost regulator (VBOOST)?
The VBOOST output delivers up to 75 mA continuous current at 3.3 V (typical) when input is ≥1.8 V, per Electrical Specifications section 11.3 of datasheet 001-92498. At 0.5 V input, output current drops to ≤25 mA due to efficiency limits - sufficient for driving segment LCDs or small sensors but not high-brightness LEDs.
Is the 48-SSOP package RoHS-compliant and lead-free?
Yes. CY8C3246PVI-122 is manufactured in a lead-free, RoHS-compliant 48-SSOP package (PVI suffix), with matte tin finish and JEDEC-standard moisture sensitivity level (MSL) 3. Full compliance documentation (including IPC-1752A material declarations) is available via Infineon's product change notifications portal.
CY8C3246PVI-122 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Series:
- PSOC™ 3 CY8C32xx
- 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:
- 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-122 FAQ
1.How can I place an order for CY8C3246PVI-122 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3246PVI-122 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-122 reliable?
The price and inventory of CY8C3246PVI-122 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3246PVI-122 is usually 5 days.
3.What payment methods are accepted for CY8C3246PVI-122?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3246PVI-122 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3246PVI-122?
CY8C3246PVI-122 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3246PVI-122 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-122?
For technical support, including CY8C3246PVI-122 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3246PVI-122 requirements.
6.How does Aetrix verify that CY8C3246PVI-122 is sourced from the original manufacturer or authorized distributors?
All CY8C3246PVI-122 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-122 meets industry standards.
7.What is the process for return or replacement of CY8C3246PVI-122?
All CY8C3246PVI-122 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3246PVI-122, 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-122 part is unused and in its original packaging.
Return procedure for CY8C3246PVI-122:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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