CY8C3865AXI-204 - 67MHz 8051 MCU, 32KB Flash | Infineon
부품 번호: CY8C3865AXI-204 ✓ 활성CY8C3865AXI-204 개요
An 8051 microcontroller is an embedded-processing component that combines a general-purpose CPU core, program memory, data memory, peripherals and interrupt handling on one integrated circuit. The CY8C38xx family belongs to the PSoC architecture, placing programmable digital blocks and a peripheral hub beside the 8051 core. This hierarchy—8-bit MCU, 8051 microcontroller, PSoC 3 microcontroller, embedded processor and semiconductor—makes the part suitable for designs requiring flexible digital peripherals and USB connectivity.
The principal features combine a 67 MHz operating ceiling with 32 KB of flash, 8 KB of SRAM and 1 KB of EEPROM. Sixteen Universal Digital Blocks support configurable digital functions, while the Peripheral Hub Unit provides eight parallel access paths, or spokes, for peripheral traffic. The integrated Fast USB 2.0 interface is particularly useful for USB-connected control, data-acquisition and human-interface equipment. Four flash protection levels add configurable firmware-control options.
The interrupt architecture supports 27 sources and eight priority levels, allowing time-sensitive USB, timer, serial, and programmable digital events to be handled deterministically. Dual data pointers improve access to separate data regions, and the 8051 instruction-set architecture supports a mature embedded-software ecosystem. The part's combination of CPU performance, programmable logic resources and USB reduces the need for separate programmable-logic devices in suitable designs.
Typical applications include USB data-acquisition equipment, industrial control panels, programmable serial interfaces, USB-connected test systems, embedded user-interface controllers and compact automation modules. The 100-lead TQFP package exposes substantially more I/O than a small-outline MCU, allowing several peripheral functions to remain active simultaneously. It is also appropriate for industrial control designs where a mature 8051 core, EEPROM and USB coexist on one device.
A principal design consideration is firmware and board validation. Before layout approval, engineers should use the manufacturer's pin-description table and application guidance to assign every power, ground, programming, clock and peripheral signal. USB layouts require careful routing of the data lines and placement of the required passive components. Firmware should also account for the separate program Flash, data EEPROM and SRAM regions.
This page combines manufacturer-level device facts, package details, practical design guidance, sourcing answers and a structured comparison of related CY8C38xx devices. These engineering views support component selection, firmware planning, PCB design and supply-chain assessment without duplicating the role of the manufacturer datasheet.
드롭인 대체품: CY8C3865AXI-204 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
CY8C3665AXI-198
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
CY8C3665AXI-016
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
CY8C3865AXI-204 최대 정격 & 전기적 특성
| Product Type | 8-bit PSoC 3 CY8C38xx Microcontroller |
| CPU Architecture | Single-core 8051 |
| 최대 클록 주파수 | 67 MHz |
| Program Flash Memory | 32 KB |
| Data EEPROM | 1 KB |
| SRAM | 8 KB |
| Universal Digital Blocks | 16 |
| Peripheral Hub Units | 1 |
| Peripheral Hub Access Paths | 8 spokes |
| USB Interface | 1 Fast USB 2.0 interface |
| Interrupt Sources | 27 |
| Interrupt Priority Levels | 8 |
| Data Pointers | 2 |
| Flash Protection Levels | 4 |
| Temperature Grade | Industrial |
| 패키지 | 100-lead TQFP (LFQFP), 14 mm x 14 mm |
| 실장 유형 | Surface mount |
CY8C3865AXI-204 100-lead tqfp (lfqfp), 14 mm x 14 mm 핀 구성 가이드
CY8C3865AXI-204(100-lead tqfp (lfqfp), 14 mm x 14 mm 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: CY8C3865AXI-204.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
CY8C3865AXI-204 적합 용도: 6 애플리케이션s: USB Data-Acquisition Controller, Industrial Control Panel, Programmable Serial Interface, USB Test and Measurement Module, Embedded User-Interface Controller, Compact Automation Controller.
USB Data-Acquisition Controller
The CY8C3865AXI-204 fits compact USB data-acquisition equipment because it combines a 67 MHz 8051 core, 32 KB of flash, 8 KB of SRAM and one Fast USB 2.0 interface. The processor can handle sampling control, protocol management and host communication while the 16 Universal Digital Blocks implement configurable timing, capture or peripheral functions. Eight KB of SRAM provides local buffering, and 1 KB of EEPROM retains calibration or configuration parameters. Compared with a discrete processor-plus-USB arrangement, this integration reduces board area and firmware coordination, although USB signal integrity and enumeration must be validated together.
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Industrial Control Panel
An industrial control panel can use the CY8C3865AXI-204 to manage buttons, indicators, serial interfaces and host communication in one 100-lead TQFP device. Its 67 MHz processing headroom supports responsive protocol handling, while 16 Universal Digital Blocks can implement deterministic input capture, timer functions or custom I/O logic. The 32 KB flash stores application firmware, and the 8 KB SRAM supports display buffers and working state. The industrial temperature-grade designation makes the device suitable for temperature-managed equipment, but developers should verify each pin, supply rail and expansion interface before layout release.
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Programmable Serial Interface
The CY8C3865AXI-204 is suitable for programmable serial-interface assemblies where fixed logic would otherwise require multiple supporting devices. Its 16 Universal Digital Blocks can implement configurable serial, timer or protocol-related functions, and the 8051 core at up to 67 MHz can supervise data formatting and device control. The 100-lead TQFP provides enough pins for multiple peripheral signals, programming and communications. Designers should assign UDB functions only after considering clocking, interrupt latency and available hub spokes, since incorrect resource allocation can alter real-time behavior or peripheral routing.
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USB Test and Measurement Module
The CY8C3865AXI-204 can serve as the control core in a USB-connected test module that combines configurable digital functions with a familiar embedded processor. The 67 MHz 8051 core handles command parsing, status reporting and test sequencing, while Fast USB 2.0 provides a direct host connection. Sixteen Universal Digital Blocks extend the device with programmable timing or acquisition functions, and the 32 KB flash accommodates embedded firmware. The design trade-off is that USB bus behavior, analog measurement circuitry and real-time timing must be developed and validated as a complete system rather than treated as independent blocks.
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Embedded User-Interface Controller
The CY8C3865AXI-204 can consolidate embedded user-interface control with programmable digital I/O in a compact module. Its 8051 core runs up to 67 MHz, providing capacity for menu logic, status handling and communication, while 16 Universal Digital Blocks can support customized key scanning, timing or display-related signals. The 8 KB SRAM accommodates local display and input state, and the 1 KB EEPROM can preserve configuration. The 100-lead TQFP is larger than a minimal user-interface MCU, but it reduces the need for separate programmable-logic components when several I/O functions must operate concurrently.
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Compact Automation Controller
The CY8C3865AXI-204 is well suited to compact automation modules that need local control, data retention and programmable I/O. The single-core 8051 operates up to 67 MHz, the 27 interrupt sources and eight priority levels support concurrent control events, and the Peripheral Hub Unit provides eight parallel access paths for peripheral traffic. Sixteen Universal Digital Blocks allow custom timing or I/O behavior without a separate FPGA in suitable designs. Compared with a lower-resource 8-bit MCU, the device offers more processing and peripheral capacity, but its larger package and more extensive configuration require additional board-validation effort.
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추천 제품 요약
엔지니어링 참조 데이터: CY8C3865AXI-204 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | CY8C3665AXI-198 | CY8C3665AXI-016 |
|---|---|---|---|
| Manufacturer | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | 100-lead TQFP (LFQFP), 14 mm x 14 mm | 100-lead TQFP (LFQFP) | 100-lead TQFP (LFQFP) |
| Product Family | PSoC 3 CY8C38xx | CY8C38xx | CY8C38xx |
주요 차별점
- Integrated USB and programmable digital resources (vs CY8C3665AXI-198)
- 67 MHz processing ceiling (vs CY8C3665AXI-198)
- Explicit local memory configuration (vs CY8C3665AXI-016)
- Expanded interrupt capacity (vs CY8C3665AXI-016)
설계 노트
Use the manufacturer pin-description table for the exact 100-lead TQFP assignment before routing power, ground, programming, clock and peripheral signals. Place the required input, output and USB decoupling capacitors at their designated pins, and provide short ground returns for high-current switching nodes. The 14 mm by 14 mm LFQFP has more perimeter routing capacity than a small-outline MCU, but every high-speed or supply connection still needs a deliberate return-path plan.
Route the Fast USB 2.0 differential pair as a controlled impedance, continuous pair with minimal stubs and a symmetric return path. Place USB protection and series-resistance components according to the manufacturer's reference circuit, and avoid placing disruptive digital or switching paths beneath the pair. Validate the completed layout for USB signal integrity because the 67 MHz CPU clock and programmable digital blocks can create adjacent noise sources even when the USB data rates are lower.
Calculate power loss from the actual supply voltage, CPU activity, peripheral utilization and USB operating state rather than from a single nominal clock condition. Estimated: use P = VIN x IIN to determine device dissipation, then apply the package thermal data with the actual PCB copper area and ambient temperature. Validate the highest-duty operating mode, include peripheral current in the budget, and preserve margin against the manufacturer's maximum junction-temperature rating.
Do not treat a related CY8C38xx ordering code as automatically interchangeable. Program memory, SRAM, EEPROM, UDB resources, USB capability, clock limits, interrupt vectors and configuration registers can differ even when the package is unchanged. Load the exact device configuration into the programming tool, compare pin tables line by line, and retest peripheral routing and timing before using CY8C3665AXI-198 or CY8C3665AXI-016 as replacements.
Plan clocks and external interfaces according to the manufacturer's timing and layout recommendations. Keep sensitive analog or high-impedance sensor paths away from the 67 MHz clock and programmable digital outputs, provide a quiet return reference, and avoid routing switching-node connections beneath sensitive inputs. If the device controls sensors through board-level amplifiers, establish grounding and filtering around the analog section rather than relying on digital filtering alone.
규정 준수 정보
The device is identified as industrial grade, but its RoHS, REACH, AEC-Q100, lead-free, halogen-free and conflict-minerals declarations require confirmation from the current manufacturer product documentation.
