CY8C3865LTI-205 - 67MHz PSoC 3 MCU | Cypress Semiconductor
부품 번호: CY8C3865LTI-205 ✓ 활성CY8C3865LTI-205 개요
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.
드롭인 대체품: CY8C3865LTI-205 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 제품에는 사용 가능한 드롭인 대체품이 없습니다.
대체품 요청CY8C3865LTI-205 최대 정격 & 전기적 특성
| 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 |
| 패키지 | 68-QFN (8 mm x 8 mm) |
| Package Type | QFN |
| Exposed Pad | Present |
| 실장 유형 | Surface mount |
| Core Architecture | 8-bit |
CY8C3865LTI-205 qfn 핀 구성 가이드
CY8C3865LTI-205(qfn 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: CY8C3865LTI-205.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
CY8C3865LTI-205 적합 용도: 6 애플리케이션s: 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.
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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.
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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.
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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.
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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.
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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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추천 제품 요약
엔지니어링 참조 데이터: CY8C3865LTI-205 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 |
|---|---|
| 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 |
주요 차별점
- 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)
설계 노트
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.
규정 준수 정보
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.