CY8C5868LTI-LP039 - PSoC 5LP 67MHz Cortex-M3 MCU 256KB | Infineon
MPN: CY8C5868LTI-LP039 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $14.5 | $14.50 |
| 10 | $13.05 | $130.50 |
| 100 | $11.6 | $1,160.00 |
| 500 | $10.44 | $5,220.00 |
| 1,000 | $9.28 | $9,280.00 |
CY8C5868LTI-LP039 Overview
A microcontroller (MCU) is an integrated circuit that combines a CPU core, memory (Flash/SRAM), and programmable peripherals on a single chip. PSoC (Programmable System-on-Chip) extends this concept by adding universal analog and digital blocks routable to any pin, blurring the line between MCU and FPGA-like analog/digital configurability. In the broader taxonomy, the CY8C5868LTI-LP039 is an ARM Cortex-M3 based MCU -> 32-bit microcontroller -> system-on-chip -> programmable mixed-signal IC -> semiconductor, sitting between a fixed-function MCU and an FPGA/CPLD.
Key features include 32-bit ARM Cortex-M3 core with single-cycle multiply and hardware divide, 67 MHz operation, 256 KB Flash with ECC, 64 KB SRAM, three SAR ADCs at up to 1 Msps with 12-bit resolution, four 8-bit DACs, four op-amps with programmable gain, CapSense hardware accelerator, USB 2.0 Full-Speed device, two CAN 2.0 controllers, I2C/SPI/UART, and an integrated DFB for DSP functions. The 68-QFN package has a thermal pad enabling theta_JA around 25 C/W with proper PCB layout.
The PSoC 5LP architecture uses a Harvard bus with a separate DMA controller to offload CPU cycles, while the universal analog/digital blocks are interconnected through a programmable fabric. This means a single chip can implement functions that would otherwise require multiple ICs (op-amps, ADC, timer, digital filter).
Typical applications include CapSense touch interfaces, industrial control with CAN bus, USB peripherals, motor control, BLDC commutation, and low-power portable instruments. The wide 1.71 V-5.5 V supply also supports direct operation from a single Li-ion cell or 3.3 V system rail.
When designing with this device, plan the analog routing early in PSoC Creator: the universal analog blocks share resources and cannot all operate simultaneously. Ensure the exposed pad of the QFN is soldered to a sufficient copper pour (>=1 sq inch) for thermal dissipation above 0.5 W.
This page synthesizes distributor pricing, drop-in alternatives within the same 68-QFN package, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for CY8C5868LTI-LP039 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with CY8C5868LTI-LP039 (same form factor and footprint) — differing in Package, ADC, DAC, Op-Amps, Communication Interfaces.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
CY8C5868AXI-LP035
✅ Drop-In✓ In Stock
$19.8 / Unit
View Datasheet →CY8C5688AXI-LP099
✅ Drop-In✓ In Stock
$11.75 / Unit
View Datasheet →CY8C5868LTI-LP038
✅ Drop-In📋 Reference alternative (not in catalog)
CY8C5287AXI-LP095
✅ Drop-In✓ In Stock
$9.85 / Unit
View Datasheet →CY8C5268LTI-LP030
✅ Drop-In📋 Reference alternative (not in catalog)
CY8C5868LTI-LP039 Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M3 32-bit |
| Operating Frequency | 67 MHz |
| Flash Memory | 256 KB (256K x 8) |
| SRAM | 64 KB |
| Operating Voltage Range | 1.71 V to 5.5 V |
| GPIO Count | 68 (programmable) |
| ADC | 3x SAR, up to 1 Msps, 12-bit |
| DAC | 4x 8-bit IDAC |
| Op-Amps | 4x configurable (SC/CT blocks) |
| Comparators | Yes (in SC blocks) |
| USB | USB 2.0 Full-Speed Device |
| CAN | 2x CAN 2.0 |
| Communication Peripherals | I2C, SPI, UART, USB, CAN |
| CapSense | Hardware accelerator |
| Operating Temperature | -40C to +85C (Industrial) |
| Package | 68-QFN (8x8 mm) with EP |
| Mounting Type | Surface Mount |
| MSL Level | 3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
CY8C5868LTI-LP039 68-qfn (8x8 mm) with ep Pin Configuration Guide
Pin configuration for CY8C5868LTI-LP039 (68-qfn (8x8 mm) with ep package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for CY8C5868LTI-LP039.
Refer to the datasheet for full pin configuration.
Typical Applications
CY8C5868LTI-LP039 is suitable for 6 applications: CapSense Touch HMI Interface, Industrial CAN Bus Node Controller, USB Human Interface Device (HID), BLDC / PMSM Motor Control, Battery-Powered Portable Instrument, Programmable Logic Replacement (Mixed-Signal Front-End).
CapSense Touch HMI Interface
The CY8C5868LTI-LP039's integrated CapSense Sigma-Delta hardware accelerator and 1.71 V-5.5 V operating range make it ideal for capacitive touch HMI panels including buttons, sliders, and proximity sensors. Per the Infineon PSoC 5LP datasheet, CapSense supports up to 48 capacitive sensors with SmartSense auto-tuning, eliminating manual capacitance calibration. The Cortex-M3 at 67 MHz runs the CapSense middleware without taxing CPU budget, while the 256 KB Flash accommodates full USB stack and application firmware. Used in consumer appliances, industrial control panels, and automotive center stacks.
Recommended
Industrial CAN Bus Node Controller
Two CAN 2.0 controllers and 67 MHz Cortex-M3 processing make the CY8C5868LTI-LP039 ideal for industrial CAN nodes such as sensor hubs, motor controllers, and machine modules. Per Infineon documentation, the on-chip CAN modules operate at 1 Mbps with hardware filtering, offloading interrupt-driven servicing via DMA. The -40C to +85C industrial temperature range suits factory-floor deployments. An external 3.3 V CAN transceiver (e.g. TJA1050 or ISO1050) is required; PSoC supplies the protocol layer including CANopen or DeviceNet stacks.
Recommended
USB Human Interface Device (HID)
On-chip USB 2.0 Full-Speed device with integrated PHY makes the CY8C5868LTI-LP039 ideal for USB HID peripherals such as keyboards, mice, game controllers, and custom data-acquisition devices. Per Infineon, USB operation requires no external PHY or 48 MHz crystal (the part can use its internal IMO for USB). 256 KB Flash holds USB stacks and device firmware. The 1.71 V-5.5 V operating range also enables bus-powered designs drawing directly from the 5 V USB rail.
Recommended
BLDC / PMSM Motor Control
TCPWM blocks, four configurable op-amps for current sensing, three 1 Msps SAR ADCs, and the integrated Digital Filter Block (DFB) make the CY8C5868LTI-LP039 ideal for sensorless BLDC and PMSM motor control up to several hundred watts. Per Infineon application notes, PSoC 5LP can implement field-oriented control (FOC) with the DFB offloading Park/Clarke transforms. The 67 MHz Cortex-M3 handles the velocity loop while DFB runs current loop hardware-accelerated. Suits HVAC fans, pumps, e-bikes, and small appliances.
Recommended
Battery-Powered Portable Instrument
The 1.71 V-5.5 V operating range, multiple low-power modes, and on-chip SAR ADCs make the CY8C5868LTI-LP039 ideal for battery-powered portable instruments including handheld meters, medical monitors, and IoT sensor nodes. Per the datasheet, deep-sleep current is in the microamp range, enabling multi-year battery life with duty-cycled sampling. The Cortex-M3 wakes on RTC, samples via ADC, transmits via I2C/SPI, and returns to sleep. The 68-QFN package suits compact handheld enclosures.
Recommended
Programmable Logic Replacement (Mixed-Signal Front-End)
Configurable universal analog and digital blocks, plus the integrated op-amps, comparators, and DFB, allow the CY8C5868LTI-LP039 to replace small FPGAs and external op-amp chains in mixed-signal front-end designs. Per Infineon, designers can instantiate custom analog signal conditioning, digital filters, and timing logic without external ICs. This reduces BOM cost and PCB area in sensor signal-conditioning modules, audio front-ends, and instrumentation applications.
Recommended
Recommended Products Summary
Engineering reference data for CY8C5868LTI-LP039 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CY8C5868AXI-LP035 | CY8C5688AXI-LP099 | CY8C5868LTI-LP038 | CY8C5287AXI-LP095 | CY8C5268LTI-LP030 |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | 68-QFN (8x8 mm) | 68-QFN (8x8 mm) - same | 68-QFN (8x8 mm) - same | 68-QFN (8x8 mm) - same | 68-QFN (8x8 mm) - same | 68-QFN (8x8 mm) - same |
| Core | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 |
| Max Frequency | 67 MHz | 80 MHz | 80 MHz | 67 MHz | 67 MHz | 67 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB | 128 KB | 256 KB |
| SRAM | 64 KB | 64 KB | 64 KB | 64 KB | 32 KB | 64 KB |
| USB | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Host/Device | USB 2.0 FS Device | USB 2.0 FS Device | USB 2.0 FS Device |
| CAN 2.0 | 1x (2nd module omitted) | 2x | 2x | 2x | 1x | 1x |
| Operating Temperature | -40C to +85C | 0C to +70C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Key Differentiators
- Wide 1.71 V-5.5 V operating range (vs CY8C5268LTI-LP030)
- Three 12-bit SAR ADCs at 1 Msps (vs CY8C5287AXI-LP095)
- Integrated CapSense hardware accelerator (vs Generic Cortex-M3 MCUs)
Design Notes
The 68-QFN package has an exposed thermal pad that MUST be soldered to a ground copper pour of at least 1 square inch for reliable thermal dissipation. At 67 MHz full operation, internal dissipation can reach 0.5-1 W; without proper EP soldering, theta_JA degrades from ~25 C/W to over 60 C/W, causing thermal shutdown in enclosed designs. Use thermal vias (4-9 recommended) under the EP connecting to inner ground planes.
Route analog signals on an inner layer with a continuous ground plane above and below to minimize coupling. PSoC 5LP analog pins are highly sensitive to digital switching noise; separate analog and digital power pins with ferrite beads or star routing. Place the 1 uF and 0.1 uF decoupling caps within 3 mm of each VDD pin. The 32.768 kHz watch crystal load capacitors (typically 12 pF) must be placed within 5 mm of the XTAL pins.
Do not enable more analog blocks than the available SC/CT resources: PSoC 5LP has 4 SC blocks and 4 CT blocks shared among ADCs, DACs, op-amps, and comparators. PSoC Creator will silently drop conflicting assignments if you exceed resource limits. Always run a Design Rules Check (DRC) before generating the bitstream. The internal IMO is sufficient for USB operation but for CAN at 1 Mbps an external 4 MHz crystal is recommended for jitter margin.
USB DP/DM traces must be 45-ohm differential, length-matched within 150 mils, and routed over a continuous ground plane. Place the 22-ohm series termination resistors within 4 mm of the USB connector. For CAN bus, route the CANH/CANL traces as a 120-ohm differential pair with termination at each end of the bus; never stub-tap a CAN node without proper impedance control.
Compliance Information
RoHS and REACH compliant per Infineon product page. MSL Level 3 per JEDEC J-STD-020. Not AEC-Q100 qualified - this part is industrial grade; automotive variants exist in the PSoC 5LP family.
