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Infineon Technologies CY8C3245AXI-166 — Discrete Semiconductors
Infineon Technologies

CY8C3245AXI-166 PSOC 3 8-bit MCU, 50 MHz, 32 KB Flash

MPNCY8C3245AXI-166
End of Life

Infineon PSOC® 3 CY8C32xx series, CY8C3245AXI-166, 8-bit 8051 MCU, 50 MHz, 32 KB Flash, 4K x 8 RAM, 1K x 8 EEPROM, 62 I/O, 100-LQFP, -40°C to 85°C.

$11.66Ref. price · indicative, final on quote
CY8C3245AXI-166 datasheet
Packaging100-LQFP
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

CY8C3245AXI-166 Technical Specifications
ParameterValue
SeriesPSOC® 3 CY8C32xx
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 5.5V
Operating temperature-40°C ~ 85°C (TA)
Speed50MHz
PackageTray
RAM size4K x 8
Core size8-Bit
EEPROM size1K x 8
PeripheralsCapSense, DMA, POR, PWM, WDT
ConnectivityEBI/EMI, I²C, LINbus, SPI, UART/USART, USB
Number of i (O)62
Core processor8051
Case100-LQFP
Data convertersA/D 16x12b; D/A 1x8b
Program memory size32KB (32K x 8)

Product details

50 MHz 8051 — what that means for throughput

The 50 MHz clock on an 8051 core handles a real-time control loop (PWM updates, ADC reads, CapSense scanning) and a USB stack without a second processor.

CapSense and analog — the BOM consolidation play

The 16-channel 12-bit ADC and the on-chip CapSense peripheral eliminate the need for an external touch controller and a separate ADC in many panel designs. The single 8-bit DAC is useful for generating an analog reference or a simple signal output. For a membrane-keypad or proximity-sensing interface, this part can replace a dedicated touch IC plus a small MCU — worth the layout review if you are counting pennies per board.

RoHS note — non-compliant, plan your exemption

This part is marked RoHS non-compliant. If your assembly line or end-market requires RoHS exemption documentation, factor that into the BOM review. For legacy designs or military/industrial builds that already accept lead-bearing solder, it is a non-issue.

Frequently asked questions

What is the closest functional second-source for CY8C3245AXI-166?

The CY8C4245LQI-483 is a PSOC 4 device with an ARM Cortex-M0 core running at 48 MHz, but it is not pin-compatible (different package and pinout) and has a different peripheral set. For a drop-in replacement, stick with the PSOC 3 family; the CY8C3245AXI-166 has no direct second-source from another manufacturer.

Will CY8C3245AXI-166 drop into a board designed for CY8C4245LQI-483?

No. The CY8C3245AXI-166 is a 100-TQFP package, while the CY8C4245LQI-483 is a 48-QFN. The pinouts, supply voltages, and peripheral maps are completely different — a board re-spin is required.

What compliance documentation does Infineon provide for CY8C3245AXI-166?

Infineon provides a datasheet and the part is marked RoHS non-compliant. For REACH, UL, or IEC certificates, check the Infineon product page or request them through your distributor — they are not listed in the standard component record.