CY8C3444AXA-116 - 50MHz 16KB 8-Bit MCU | Infineon
料号： CY8C3444AXA-116 ✓ 量产中CY8C3444AXA-116 概述
A PSoC, or programmable system-on-chip, is an integrated microcontroller that combines a CPU core, embedded Flash, programmable digital and analog resources, and mixed-signal peripherals in one device. The CY8C34xx family belongs to the broader hierarchy of 8-bit microcontroller, embedded controller, processor, semiconductor, and electronic-component categories. Its 8051-compatible architecture provides a familiar software platform for compact control, monitoring, and communications products.
The CY8C3444AXA-116 centers on 16 KB of programmable Flash and a maximum stated clock frequency of 50 MHz. The 1.71 V to 5.5 V operating range provides design flexibility across portable and fixed equipment. Its 100-TQFP package exposes substantially more pins than a small-outline MCU, supporting a broader mix of digital I/O and analog-system connections than the package count alone guarantees.
The verified distributor summaries identify the device as an 8051 PSoC 3 CY8C34xx controller with 16K by 8 organization. One distributor result also identifies the device as a 100-LQFP option, while the DigiKey and Mouser listings consistently identify the 100-TQFP, 14 mm by 14 mm format. Engineers should resolve this packaging-label discrepancy against the manufacturer ordering table before releasing a PCB footprint.
Typical uses include compact industrial controllers, sensor-interface modules, keypad and display products, appliance controls, and embedded communications equipment. Its relatively large package is advantageous when a design needs many externally routed signals but less suitable for space-constrained wearable products. Firmware development must also account for the 16 KB Flash limit when selecting boot code, application logic, calibration data, and update mechanisms.
The primary design constraint is verification of the exact pin map, peripheral mix, electrical limits, and package drawing because the supplied results do not expose those details. Do not infer unused-pin assignments from the 100-pin count or assign analog functions without consulting the official manufacturer datasheet. Input, output, power, and decoupling requirements should likewise be checked against the selected ordering variant before schematic release.
This page consolidates verified distributor specifications, current pricing references, lifecycle cautions, application guidance, and the limitation affecting drop-in replacement analysis. The cross-reference results did not identify a defensible same-package, pin-compatible replacement, so presenting unrelated microcontrollers as drop-in equivalents would create a higher engineering risk than reporting the available evidence honestly.
直接替换替代料： CY8C3444AXA-116 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料CY8C3444AXA-116 最大额定值与电气特性
| Product Type | 8-bit PSoC 3 microcontroller (MCU/SoC) |
| Series | PSoC 3 CY8C34xx |
| CPU Architecture | 8051, 8-bit |
| 最大时钟频率 | 50 MHz |
| Flash Memory | 16 KB |
| Flash Organization | 16K x 8 |
| Operating Supply Voltage Range | 1.71 V to 5.5 V |
| 封装 | 100-TQFP |
| Package Body Size | 14 mm x 14 mm |
| Package Alternative Label | 100-LQFP |
| 安装类型 | Surface mount |
| RoHS 状态 | Compliant |
CY8C3444AXA-116 100-lqfp 引脚配置指南
CY8C3444AXA-116（100-lqfp 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： CY8C3444AXA-116.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CY8C3444AXA-116 适用于 6 应用s: Compact Industrial Control Module, Sensor and Signal Interface Controller, Appliance and Equipment Controller, Low-Voltage Portable Instrument, Communications Gateway Controller, Digital Control and Display Panel.
Compact Industrial Control Module
The CY8C3444AXA-116 fits compact industrial control modules that coordinate sensors, discrete outputs, status indicators, and local configuration while operating from a 1.71 V to 5.5 V supply. Its 50 MHz 8051-compatible core provides a clear execution target for a 16 KB Flash budget, allowing application logic to coexist with a bootloader and limited calibration data. The 100-TQFP package offers a large pin count for external connections compared with compact microcontroller packages. Designers should reserve pins for required power, clock, programming, reset, communications, and I/O functions according to the official pinout. Firmware partitioning must avoid exceeding 16 KB, and an industrial release should verify operating-temperature limits, EMC behavior, and lifecycle commitments that are not present in the supplied distributor summaries.
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Sensor and Signal Interface Controller
The CY8C3444AXA-116 is appropriate for a sensor-interface controller that gathers measurements, applies calibration, filters data, and forwards results over a local serial link. Its 16 KB Flash can hold compact firmware, while the 50 MHz clock provides headroom for time-based control and digital filtering. The PSoC concept is particularly relevant when a design benefits from programmable mixed-signal resources, although the verified excerpts do not specify ADC resolution or channel count. Engineers must therefore verify the selected peripheral set, analog voltage limits, acquisition timing, and pin multiplexing in the official datasheet. External sensor conditioning and isolation should be designed around those limits, and the final firmware should include calibration storage and diagnostic paths that fit the available memory.
推荐
Appliance and Equipment Controller
The CY8C3444AXA-116 can serve as the central controller in an appliance or equipment product that combines local buttons, indicators, sensors, relays, and a communications link. The verified 1.71 V to 5.5 V operating range supports both low-voltage logic and legacy 5 V peripheral arrangements, while the 8-bit 8051 architecture supports straightforward control loops and state machines. The 100-pin package makes numerous signal connections practical, but it requires careful attention to exposed-pad grounding, thermal performance, and analog layout. Because the supplied information does not confirm the exact I/O ratings or drive capabilities, designers must check absolute maximum ratings, output-current limits, and power sequencing before assigning loads. A bootloader or fallback state should preserve safe operation if communications fail.
推荐
Low-Voltage Portable Instrument
The CY8C3444AXA-116 is usable in a low-voltage portable instrument because its verified operating range begins at 1.71 V and extends to 5.5 V. The 50 MHz 8-bit processor can supervise a display, keypad, measurement front end, and power-management sequence while operating from a compact energy budget. The 16 KB Flash limit encourages compact modular firmware, while the 100-TQFP package may occupy more board area than a space-constrained portable design can accept. A battery-powered implementation should use the lower voltage only after confirming internal-regulator, I/O, and flash-operation requirements in the manufacturer documentation. Power-gating, sleep behavior, startup time, and analog accuracy are not stated in the verified results and therefore require direct datasheet verification before battery-life calculations are finalized.
推荐
Communications Gateway Controller
The CY8C3444AXA-116 can support a small communications gateway that translates between a local serial interface, configuration controls, and status reporting. Its 8051-compatible 8-bit architecture and 16 KB Flash are appropriate for protocol handling and supervisory logic when the gateway does not require a high-performance TCP/IP stack. The 100-TQFP package offers enough physical connections for multiple communications and control lines, subject to exact pin allocation. A design should isolate external interface connectors, provide robust ground returns, and select transceiver electrical parameters independently of the MCU supply. Since the supplied evidence does not state UART, SPI, I2C, USB, or Ethernet capabilities, no interface should be assumed. Confirm the supported peripheral inventory and pin multiplexing in the official datasheet, and budget firmware carefully for buffering, timeouts, and secure configuration storage.
推荐
Digital Control and Display Panel
The CY8C3444AXA-116 is appropriate for a digital control panel that scans buttons, drives indicators, maintains display state, and records operating events. A 50 MHz control core and 16 KB Flash provide sufficient capacity for compact menu logic and event handling without a high-cost application processor. The 100-TQFP package provides numerous external signal options for displays, keys, and indicator drivers. Human-interface designs must nevertheless verify pin drive strength, debounce resources, timing, and any display-controller interfaces because those details are absent from the supplied snippets. Firmware should include debounce, fault-state rendering, and safe defaults for disconnected peripherals. Layout should keep display and switching currents away from sensitive measurement circuitry, and the final schematic should use only assignments confirmed by the official 100-terminal package drawing.
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推荐产品汇总
工程参考数据： CY8C3444AXA-116 ——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 |
|---|---|
| Package | 100-TQFP, 14 mm x 14 mm |
| Brand | Infineon |
| CPU Architecture | 8-bit 8051 |
| Maximum Clock Frequency | 50 MHz |
| Flash Memory | 16 KB (16K x 8) |
| Operating Supply Voltage | 1.71 V to 5.5 V |
| Product Family | PSoC 3 CY8C34xx |
| Verified Quantity-1 Price | $5.2739 as of 2026-10-30 |
关键差异点
- PSoC 3 mixed-signal platform in an 8-bit MCU （对比 Generic 8-bit microcontroller)
- Broad verified supply-voltage range （对比 5 V-only 8-bit microcontroller)
- Substantial connection capacity （对比 Compact 16-pin or 20-pin 8-bit MCU)
- Established distributor availability （对比 Unverified generic substitute)
设计说明
Confirm the exact CY8C3444AXA-116 package drawing before releasing the PCB because the supplied distributor results alternate between 100-TQFP and 100-LQFP terminology. Use the manufacturer land pattern, pin-1 orientation, exposed-pad geometry, and soldering profile for the selected ordering code. Do not derive the footprint solely from the shared 100-pin count. A package-mismatch error can produce a mechanically incompatible board even when the device remains electrically powered and partially functional.
Design the supply around the verified 1.71 V to 5.5 V operating range while checking the manufacturer's absolute maximum ratings and power-sequencing requirements. Add local bulk and high-frequency decoupling close to the supply terminals, and provide a defined state for every control input during reset and brownout. Input voltage, output-voltage tolerance, and logic-level thresholds are not disclosed in the supplied snippets, so they must be verified before selecting pull-up, pull-down, and external-driver values.
Do not assume that a 50 MHz CPU rating guarantees 50 MHz operation of every peripheral or that all 100 terminals provide user I/O. Verify clock-tree limits, interrupt behavior, analog-channel availability, and pin multiplexing in the official documentation. Also plan firmware around the 16 KB Flash ceiling: include bootloader size, interrupt vectors, calibration tables, diagnostics, and update data in the memory budget rather than treating the entire array as application code.
Separate analog sensing, digital control, and communication return currents in the board layout, even though the supplied data does not identify the complete analog pin set. Keep sensitive inputs away from switching nodes and high-current outputs, use a continuous ground reference, and route programming and clock signals away from potential noise sources. Any exposed-pad connection and thermal grounding arrangement must follow the exact manufacturer package drawing rather than a generic 100-pin LQFP recommendation.
合规信息
The LCSC result identifies the CY8C3444AXA-116 as RoHS compliant. No verified evidence in the supplied results establishes REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status.
