Infineon Technologies CY8C3666AXI-036T

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Product attributes Property Value
Manufacturer Infineon Technologies
Product Series PSOC™ 3 CY8C36xx
Packaging Tape & Reel (TR) | NULL
Core Processor 8051
Core Size 8-Bit
Speed 67MHz
Connectivity EBI/EMI, I2C, LINbus, SPI, UART/USART, USB
Peripherals CapSense, DMA, LCD, POR, PWM, WDT
Number of I/O 62
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 4x8b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 100-TQFP (14x14)
Package / Case 100-LQFP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The Infineon CY8C3666AXI-036T is a programmable embedded system-on-chip with an 8051 core at 67MHz. It features 64KB flash and 8KB RAM, operating from 1.71V to 5.5V. The 100-LQFP package includes CapSense, DMA, LCD, POR, PWM, and WDT. Ideal for human-machine interface and portable applications.

  • Integrated CapSense: No external touch controller needed, saving cost.
  • Wide voltage range: 1.71-5.5V supports single-cell battery to 5V systems.
  • Versatile peripherals: LCD, PWM, and DMA in one package.
  • Low power: Suitable for battery-powered devices.

Touch-Sensitive Control Panels

Integrated CapSense eliminates external touch ICs, reducing BOM cost and board space.

Portable Medical Devices

Low voltage operation (1.71V) extends battery life in glucose meters and pulse oximeters.

Smart Home Thermostats

LCD driver and PWM control backlighting and fan speed with a single chip.

Industrial Keypads

DMA and WDT ensure reliable operation in noisy factory environments.

Wearable Fitness Trackers

Small 100-LQFP package and low power modes suit compact designs.

White Goods User Interfaces

CapSense and PWM drive LED indicators and touch buttons in washing machines.

Q: What is the core processor?
A: 8051-compatible core at 67MHz.
Q: What is the supply voltage?
A: 1.71V to 5.5V.
Q: Does it support CapSense?
A: Yes, integrated CapSense for touch sensing.
Q: What is the package?
A: 100-LQFP.
Base Product Number : CY8C3666AXI-036
1.71-5.5V 100-LQFP 67MHz 8051 CapSense DMA HMI LCD portable PWM touch sensing WDT
Q: What is the core processor?
A: 8051-compatible core at 67MHz.
Q: What is the supply voltage?
A: 1.71V to 5.5V.
Q: Does it support CapSense?
A: Yes, integrated CapSense for touch sensing.
Q: What is the package?
A: 100-LQFP.