Infineon Technologies CY8C3244LTI-130

Overview

CY8C3244LTI-130 from Infineon Technologies (acquired Cypress Semiconductor) is a programmable 8-bit PSoC® 3 system-on-chip integrating an enhanced 8051 CPU, 64 KB flash, 8 KB RAM, configurable analog/digital peripherals, and flexible I/O routing. It operates from 1.71–5.5 V at up to 50 MHz, supports CapSense® touch sensing on up to 62 GPIOs, and includes USB 2.0 FS, I²C, SPI, UART, and Delta-Sigma ADC for embedded control in industrial HMI and sensor interface applications.

For engineers reviewing the CY8C3244LTI-130 datasheet, CY8C3244LTI-130 pinout, CY8C3244LTI-130 application, or CY8C3244LTI-130 equivalent, key selection criteria include its 48-pin SSOP package, 29 GPIO count, integrated 12-bit Delta-Sigma ADC (±1 LSB INL), 8-bit DAC, and USBIO-capable pins for host-connected device development.

Technical Context

The CY8C3244LTI-130 implements a single-cycle 8051 core with DMA controller and nested vector interrupt architecture, enabling sub-μs interrupt latency and zero-CPU data movement between peripherals. Its digital subsystem uses 24 Universal Digital Blocks (UDBs) to implement custom logic including PWM, PRS, CRC, quadrature decoders, and protocol engines (I²C/SPI/UART/LIN).

Analog resources include two voltage comparators, 1.024 V ±1% internal reference, 8–12-bit Delta-Sigma ADC (66 dB SINAD, <100 µV offset), and 8-bit DAC with 1 Msps update rate. All analog and digital signals route flexibly to any of 29 GPIOs via programmable interconnect, supporting mixed-signal co-design without external glue logic.

Key Specifications

Pinout & Package

Package: 48-pin SSOP (Small Outline Integrated Circuit), 0.635 mm pitch, body size 15.4 × 7.6 mm - compatible with standard surface-mount assembly and reflow profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable mixed-signal controller applications.

Compared with CY8C3244LTI-130, CY8C3245F-LQ48 trades USB integration for higher I/O density in QFN, while CY8C3866AXI-065 upgrades to ARM Cortex-M0 with doubled memory and dual USB - making it suitable for complex firmware but less optimal for cost-sensitive 8051-based legacy migration.

Availability

CY8C3244LTI-130 is available at Aetrix Electronics and suitable for industrial HMI panels, medical sensor nodes, smart thermostats, and energy-harvesting IoT edge devices requiring stable component supply across long-lifecycle production programs.

Supply support for CY8C3244LTI-130 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.

The CY8C32 series belongs to the PSoC® 3 product line, designed specifically for cost-sensitive, ultra-low-power embedded applications requiring analog/digital flexibility without ARM-class complexity.

FAQ

Does CY8C3244LTI-130 support USB device enumeration without external components?

Yes. The part integrates a full-speed USB 2.0 PHY with internal termination resistors and ESD protection on P15[6]/P15[7]. When configured as a USB device, it enumerates successfully using only these two pins and standard USB cable - no external transceiver, resistors, or capacitors are required.

What is the maximum number of CapSense® electrodes supported on this device?

CY8C3244LTI-130 supports up to 62 CapSense® electrodes, enabled by its 29 GPIOs operating in mutual- or self-capacitance mode with integrated IDACs and CSD (CapSense® Sigma-Delta) sensing engine. Electrode count is limited by routing resources and scan time, not pin count alone.

Can the internal Delta-Sigma ADC measure signals below ground potential?

No. The ADC input range is 0 V to VREF (typically 1.024 V or AVDD), referenced to VSSA. It does not support true bipolar input. To measure negative signals, external level-shifting circuitry (e.g., op-amp summing amplifier) is required to bias the signal into the valid unipolar range.

Is the 50 MHz CPU clock achievable using only internal oscillators?

Yes. The internal PLL can multiply the 24 MHz IMO output to generate a stable 50 MHz system clock. This requires configuring the PLL with appropriate feedback and output dividers - no external crystal is needed unless USB or high-accuracy timing is required.