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Infineon Technologies CY8C3866LTI-067 — Discrete Semiconductors
Infineon Technologies

Cypress CY8C3866LTI-067 PSOC 3 MCU, 8-Bit 8051 67MHz

MPNCY8C3866LTI-067
End of Life

Cypress PSOC 3 CY8C38xx series, CY8C3866LTI-067, 8-bit 8051 MCU at 67MHz, 64KB Flash, 8K x 8 RAM, 2K x 8 EEPROM, 16x20b ADC, 4x8b DAC, 25 I/O, 48-QFN (7x7), -40°C to 85°C, 1.71V–5.5V.

$21.06Ref. price · indicative, final on quote
CY8C3866LTI-067 datasheet
Packaging48-VFQFN Exposed Pad
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

CY8C3866LTI-067 Technical Specifications
ParameterValue
SeriesPSOC® 3 CY8C38xx
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.71V ~ 5.5V
Operating temperature-40°C ~ 85°C (TA)
Speed67MHz
PackageTray
RAM size8K x 8
Core size8-Bit
EEPROM size2K x 8
PeripheralsCapSense, DMA, LCD, POR, PWM, WDT
ConnectivityEBI/EMI, I²C, LINbus, SPI, UART/USART, USB
Number of i (O)25
Core processor8051
Case48-VFQFN Exposed Pad
Data convertersA/D 16x20b; D/A 4x8b
Program memory size64KB (64K x 8)

Product details

What this PSOC 3 brings to the board

What sets this chip apart from a plain 8051 is the integrated analog: a 16-channel, 20-bit delta-sigma ADC and a quad 8-bit DAC. That ADC resolution is unusual for an 8-bit MCU — it lets you read strain gauges, thermocouples, or capacitive touch sensors directly, without an external converter. The peripheral set includes CapSense, DMA, LCD drive, POR, PWM, and a watchdog timer. Connectivity covers I²C, SPI, UART/USART, LINbus, USB, and an external bus interface (EBI/EMI) for memory or FPGA expansion.

Lifecycle and sourcing reality

The CY8C3866LTI-067 carries an Active lifecycle status, so there is no last-time-buy or obsolescence notice to plan around. This part is sourced through independent distribution and quoted to order against an RFQ.

Frequently asked questions

What is the programming interface for CY8C3866LTI-067?

The PSOC 3 family uses a serial wire debug (SWD) interface for programming and debugging. A standard MiniProg3 or compatible programmer connects to the SWD pins (SWDIO, SWDCK) plus power and ground.