CY8C3865LTI-205 - 67MHz PSoC 3 MCU | Cypress Semiconductor
Teilenummer: CY8C3865LTI-205 ✓ AktivCY8C3865LTI-205 Übersicht
A programmable system-on-chip, or PSoC, combines a microcontroller core with configurable peripheral blocks on one integrated circuit. The PSoC 3 architecture belongs to the broader microcontroller and embedded-processing hierarchy. By placing programmable digital functions, analog conversion resources, and general-purpose I/O near the processor core, the architecture can reduce external discrete circuitry and allow peripheral behavior to be adapted through device configuration and firmware.
The CY8C3865LTI-205 provides a 67 MHz operating speed, 32 KB of flash program memory, and 4 KB of SRAM. Its 8-bit processor architecture and 8051 compatibility make it suitable for control-oriented embedded systems requiring responsive peripheral handling. The 68-QFN package measures 8 mm by 8 mm and supports compact, high-density PCB layouts where the exposed thermal pad and fine-pitch routing requirements can be managed correctly.
The CY8C38xx family supports configurable system resources rather than relying on a fixed peripheral map. This approach is useful when a design needs mixed-signal behavior, digital control logic, serial communications, timing functions, or application-specific signal conditioning. Final peripheral performance, voltage limits, temperature ratings, and electrical characteristics should be confirmed against the manufacturer datasheet for the exact ordering code and temperature grade.
Typical applications include industrial sensing and control modules, connected equipment, building automation interfaces, compact consumer products, motor and actuator controllers, and IoT edge nodes. In these systems, the MCU can combine control logic with mixed-signal functions while reducing component count. The 32 KB flash capacity is suitable for moderate firmware workloads, while 4 KB of SRAM supports real-time control, protocol stacks, and data buffering.
PCB implementation requires careful treatment of the 68-QFN footprint. Place the exposed pad according to the manufacturer land-pattern and thermal-via guidance, maintain the specified solder-mask and paste geometry, and route high-impedance or noise-sensitive signals away from fast-switching and power-conversion nodes. Validate the assembled board for shorts between the fine-pitch leads and exposed pad before programming.
This page consolidates the confirmed device identity, memory configuration, package information, sourcing links, engineering-use guidance, and compatibility limits into one practical reference for evaluating the CY8C3865LTI-205 in new embedded designs.
Drop-in-Alternativen für CY8C3865LTI-205 – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Für dieses Produkt sind keine Drop-in-Alternativen verfügbar.
Alternativen anfordernCY8C3865LTI-205 Grenzwerte & elektrische Eigenschaften
| Product Type | 8-bit PSoC 3 microcontroller |
| Device Family | CY8C38xx |
| Processor Core | 8051-compatible 8-bit core |
| Maximum CPU Frequency | 67 MHz |
| Flash Memory | 32 KB (32K x 8) |
| SRAM | 4 KB |
| Programmable System-on-Chip | PSoC 3 architecture |
| Gehäuse | 68-QFN (8 mm x 8 mm) |
| Package Type | QFN |
| Exposed Pad | Present |
| Montageart | Surface mount |
| Core Architecture | 8-bit |
CY8C3865LTI-205 qfn Pinbelegungsleitfaden
Pinbelegung für CY8C3865LTI-205 (qfn-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für CY8C3865LTI-205.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
CY8C3865LTI-205 ist geeignet für 6 Anwendungs: Industrial Sensor Interface, IoT Edge Control Node, Building Automation Controller, Compact Motor and Actuator Control, Connected Consumer Appliance, Data Acquisition and Signal Conditioning.
Industrial Sensor Interface
The CY8C3865LTI-205 fits compact sensor-interface modules that need local acquisition, signal conditioning, and control in one microcontroller package. Its PSoC 3 architecture provides configurable digital and analog resources, while the 67 MHz 8051-compatible core supports responsive peripheral handling. The 32 KB of flash accommodates firmware for acquisition sequencing, calibration, diagnostics, and communications, while 4 KB of SRAM provides working space for sampled data and protocol buffers. Because the device uses a fine-pitch 68-QFN package with an exposed pad, the board should follow the manufacturer land pattern and provide adequate thermal and electrical pad connectivity.
Empfohlen
IoT Edge Control Node
The CY8C3865LTI-205 is appropriate for IoT edge nodes that combine sensor reading, local decision logic, and serial connectivity. The 67 MHz processor provides timing headroom for protocol handling and control tasks, while the PSoC 3 architecture allows peripheral functions to be configured around the design rather than relying entirely on discrete components. Its 32 KB flash supports a constrained embedded application, and 4 KB of SRAM can hold transient measurements and communication state. The 8 mm by 8 mm 68-QFN package helps reduce board area, although careful exposed-pad soldering and thermal-via placement remain essential for manufacturing yield.
Empfohlen
Building Automation Controller
The CY8C3865LTI-205 can serve as the local controller in a building automation module responsible for monitoring inputs and coordinating connected equipment. Its 8051-compatible 8-bit core, 67 MHz maximum operating frequency, and programmable PSoC resources support real-time control logic, timing functions, serial interfaces, and mixed-signal input conditioning. The 32 KB flash provides room for application firmware and configuration data, while 4 KB of SRAM supports state machines and protocol buffering. Temperature-range and regulatory requirements should be verified for the target installation, and the PCB must preserve the recommended exposed-pad and fine-pitch layout.
Empfohlen
Compact Motor and Actuator Control
The CY8C3865LTI-205 is suitable for small motor or actuator-control modules where deterministic control, configurable peripherals, and limited board space are important. The 67 MHz PSoC 3 core can execute control loops while its programmable resources support timing, digital signaling, and mixed-signal functions. With 32 KB of flash and 4 KB of SRAM, the device accommodates firmware for sequencing, fault handling, and communication. Designers should separate power-switching stages from sensitive control routing and verify motor-interface voltage and timing requirements against the manufacturer datasheet before finalizing the schematic.
Empfohlen
Connected Consumer Appliance
The CY8C3865LTI-205 can support compact consumer products that require local controls, status sensing, and a communications interface. Its PSoC 3 architecture consolidates programmable digital and analog functions around an 8051-compatible core, reducing the need for several dedicated support devices. The 67 MHz operating rate supports responsive application behavior, while 32 KB of flash and 4 KB of SRAM are appropriate for moderate firmware and control-state workloads. The 68-QFN package reduces footprint but requires assembly processes capable of handling fine-pitch leads and the exposed thermal pad reliably.
Empfohlen
Data Acquisition and Signal Conditioning
The CY8C3865LTI-205 is well suited to compact data-acquisition modules that combine sensor conditioning, conversion control, and digital processing. Its PSoC 3 architecture provides configurable resources for analog and digital functions, while the 67 MHz 8051-compatible core can handle acquisition sequencing and local filtering. The 32 KB flash supports configuration, calibration, and application firmware, and 4 KB of SRAM can hold active measurement buffers. Layout should isolate sensitive analog nodes from digital return paths and switching activity, while the exposed pad should be connected according to the manufacturer package guidance.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für CY8C3865LTI-205 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt |
|---|---|
| Package | 68-QFN (8 mm x 8 mm) |
| Brand | Cypress Semiconductor |
| Product Type | 8-bit PSoC 3 microcontroller |
| Processor Core | 8051-compatible 8-bit core |
| Maximum CPU Frequency | 67 MHz |
| Flash Memory | 32 KB (32K x 8) |
| SRAM | 4 KB |
| Device Family | CY8C38xx |
| Exposed Pad | Present |
Wichtigste Unterscheidungsmerkmale
- 67 MHz PSoC 3 processing within an 8-bit embedded controller (vs. CY8C3665LTI-199)
- Compact 8 mm by 8 mm surface-mount implementation (vs. CY8C3666LTI-201)
- Configurable PSoC 3 resource architecture (vs. CY8C3865LTI-205T)
Designhinweise
Use the manufacturer 68-QFN land pattern and exposed-pad geometry without substituting a generic 68-pin footprint. Confirm pad dimensions, solder-mask opening, paste pattern, and thermal-via arrangement against the package drawing. Inspect the finished board for bridging between fine-pitch leads and the exposed pad because such shorts can prevent programming or cause unstable operation.
Separate analog-sensing paths from digital timing and switching signals. Keep the ground return beneath sensitive nodes continuous, avoid routing high-current return paths through the MCU area, and place programming or communication interfaces away from analog inputs. This is especially important in a PSoC design because configurable digital and analog resources may be placed close together on the same die and package.
Follow the manufacturer recommendations for all supply pins, decoupling capacitors, exposed-pad connection, and power sequencing. Do not infer permissible voltage or capacitor values from generic PSoC guidance; verify them in the datasheet for the exact ordering code. Correct bypass placement limits supply disturbance when the 67 MHz core and configurable peripherals switch.
Do not treat the CY8C3865LTI-205T as a functional substitute merely because it has the same base MPN with a reel suffix. Package and ordering differences can affect labeling, incoming inspection, or assembly planning. For any redesign, verify pin multiplexing, boot configuration, programming signals, memory requirements, peripheral assignments, voltage limits, and exposed-pad connectivity before approving a substitution.
Compliance-Informationen
Compliance declarations for the exact CY8C3865LTI-205 ordering code were not established. Confirm RoHS, REACH, lead-free, halogen-free, conflict-minerals, and automotive qualification status with the manufacturer before procurement or release.