CY8C3866AXA-035 - 67MHz 8051 MCU, 64KB Flash | Infineon
料号： CY8C3866AXA-035 ✓ 量产中CY8C3866AXA-035 概述
A PSoC, or programmable system-on-chip, combines a microcontroller core with configurable analog and digital blocks. Within the product hierarchy, the CY8C3866AXA-035 belongs to the PSoC 3 CY8C38xx family, combines an 8051-compatible MCU with programmable resources, and ultimately serves as a mixed-signal embedded-control IC. This integration allows designers to implement sensing, control, and communications functions on one device rather than using separate analog and digital components.
The principal operating characteristics include an 8-bit 8051 instruction set, operation up to 67 MHz, and 64 KB of embedded flash organized as 64K by 8 bits. The device includes 8 KB of SRAM and accepts a supply range spanning 0.5 V to 5.5 V according to the product listing. Its 100-TQFP package provides a high pin count suitable for designs requiring numerous external peripheral connections.
The CY8C38xx architecture is particularly useful when an application must combine deterministic control with programmable signal conditioning. Programmable analog and digital blocks can replace fixed-function glue logic, while the 8051-compatible core handles firmware, state machines, and communications. Designers should still verify startup behavior, clock limits, and peripheral availability for the specific device variant before finalizing a board.
Typical applications include automotive body and comfort controllers, industrial monitoring equipment, sensor-interface systems, motor and actuator controllers, and compact embedded products that need both digital processing and programmable analog functions. The 67 MHz operating rate supports responsive control tasks while the 64 KB flash capacity accommodates application firmware and configuration data.
For PCB implementation, use the 100-pin TQFP footprint and follow the manufacturer pin-description table when assigning power, ground, clock, programming, and peripheral signals. Pay particular attention to decoupling, exposed routing requirements, and startup configuration. Firmware development should use the programming tools and PSoC Creator workflow supported by the CY8C38xx family.
This product page combines the device identity, memory organization, package details, verified drop-in family variants, application guidance, and engineering design notes in a searchable format. It helps engineers compare configuration options while retaining the exact 100-pin footprint and 8051-based architecture needed for targeted redesigns.
直接替换替代料： CY8C3866AXA-035 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： CY8C3866AXA-035 （相同外形与封装尺寸）.
CY8C3866AXA-025
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C3866AXA-045
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C3866AXA-055
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C3866AXA-065
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C3866AXI-035
✅ 直接替换联系询价
查看数据手册 →CY8C3866AXA-035 最大额定值与电气特性
| 暂无规格参数 |
CY8C3866AXA-035 standard 引脚配置指南
CY8C3866AXA-035（standard 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： CY8C3866AXA-035.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CY8C3866AXA-035 适用于 6 应用s: Automotive Body Control, Industrial Sensor Interface, Motor and Actuator Control, Connected Monitoring Equipment, Consumer Accessory Controller, Programmable Logic Controller.
Automotive Body Control
The CY8C3866AXA-035 fits automotive body-control modules that combine switch inputs, actuator outputs, diagnostics, and communication tasks in one controller. Its 67 MHz 8051-compatible core supports responsive state-machine execution, while 64 KB of flash stores application code and 8 KB of SRAM provides working memory for control logic. The AEC-Q100 identification supports automotive design review, provided the exact temperature grade and suffix meet the vehicle specification. Keep sensitive analog routing separate from switching nodes and follow the manufacturer grounding and decoupling guidance.
推荐
Industrial Sensor Interface
The CY8C3866AXA-035 is suitable for industrial sensor-interface modules that require programmable signal conditioning, digital acquisition, and local control in a compact 14 mm by 14 mm package. The 8051-compatible core can execute calibration, filtering, threshold, and fault-handling routines, while the PSoC 3 programmable resources reduce the need for separate fixed-function components. With 64 KB flash and 8 KB SRAM, it accommodates embedded firmware and working buffers. Validate input limits, isolation, grounding, and thermal performance for the installed enclosure.
推荐
Motor and Actuator Control
The CY8C3866AXA-035 can serve as the supervisory controller in compact motor, valve, and actuator assemblies where deterministic embedded logic is needed alongside programmable signal handling. Its 67 MHz clock supports responsive control tasks, and its 64 KB flash and 8 KB SRAM are appropriate for sequence management, diagnostics, and parameter storage. The 100-pin TQFP provides dedicated connections for sensing and control signals. Place power-stage switching devices away from precision analog traces, and verify startup, fault shutdown, and electromagnetic-compatibility behavior on the final board.
推荐
Connected Monitoring Equipment
The CY8C3866AXA-035 works in compact network-connected monitors that combine local sensing, threshold evaluation, logging, and communications. Its 8-bit 8051-compatible processor can manage protocol tasks and control sequences, while the PSoC programmable resources support signal conditioning close to the sensor interface. The 64 KB flash capacity supports firmware updates and configuration data, and 8 KB of SRAM accommodates communication and measurement buffers. Use an isolated communications interface when the system connects to long cables or high-energy industrial equipment.
推荐
Consumer Accessory Controller
The CY8C3866AXA-035 can implement a compact accessory controller for products combining capacitive or analog sensing, LED indication, user input, and a serial communications link. The 67 MHz core provides enough execution speed for responsive interaction and timing, while the 64 KB flash and 8 KB SRAM support embedded features without an external memory device. Its 100-pin TQFP package simplifies connection to multiple sensors and indicators. Confirm the consumer-market qualification status and operating-temperature requirements before using this automotive-identified ordering option.
推荐
Programmable Logic Controller
The CY8C3866AXA-035 is appropriate for compact PLC and equipment-controller modules that execute deterministic logic, supervise discrete inputs, and drive outputs. The 8051-compatible architecture and 67 MHz maximum clock support responsive task execution, while 64 KB of flash and 8 KB of SRAM provide practical capacity for control logic and diagnostics. The PSoC 3 architecture allows configurable digital and analog resources to replace some discrete interface circuitry. Verify watchdog behavior, safe-state outputs, startup sequencing, and electromagnetic compliance before using the controller in industrial machinery.
推荐
推荐产品汇总
工程参考数据： CY8C3866AXA-035 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | CY8C3866AXA-025 | CY8C3866AXA-045 | CY8C3866AXA-055 | CY8C3866AXA-065 | CY8C3866AXI-035 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | 100-TQFP (14x14) | 100-TQFP (14x14) | 100-TQFP (14x14) | 100-TQFP (14x14) | 100-TQFP (14x14) | 100-TQFP (14x14) |
| CPU Core | 8-bit 8051-compatible | 8-bit 8051-compatible | 8-bit 8051-compatible | 8-bit 8051-compatible | 8-bit 8051-compatible | 8-bit 8051-compatible |
| Ordering Grade | AXA | AXA | AXA | AXA | AXA | AXI |
关键差异点
- Automotive-qualified ordering option （对比 CY8C3866AXI-035)
- 67 MHz clock with 64 KB flash and 8 KB SRAM （对比 CY8C3866AXI-035)
- Single-package programmable control and signal handling （对比 C8051F012R)
设计说明
Route the 3.3 V or other selected operating rail directly to the device power pins and place local bypass capacitors immediately adjacent to those pins and their ground references. Although the listed operating range reaches 0.5 V to 5.5 V, the usable core and peripheral range must be checked against the selected configuration. Use a controlled startup profile and verify brownout, reset, and power-sequencing behavior against the system requirements before attaching external loads.
Implement the 100-pin TQFP land pattern using the exact package drawing rather than a generic 100-pin library footprint. Keep the clock path short, preserve continuous ground references beneath the device where the package construction permits, and separate sensitive analog inputs from switching or high-current outputs. Assign pins only from the manufacturer pin-description table so that programming signals, power rails, ground pins, and peripheral functions remain consistent with the selected ordering code.
Do not assume that every CY8C3866 suffix is interchangeable merely because the package matches. Confirm the maximum clock, temperature grade, qualification status, supply configuration, and production packing before substitution. Programmable PSoC peripherals can also change pin routing and internal clock behavior, so compare the complete device configuration, not only the basic 8051 core and memory capacity. Revalidate timing and peripheral mappings after changing the speed suffix.
合规信息
The product documentation identifies the AXA-035 as an automotive AEC-Q100 device. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations must be confirmed for the exact ordering code.
