CY8C3444LTI-110 - 50MHz PSoC 3 MCU, 16KB Flash | Infineon
料号： CY8C3444LTI-110 ✓ 量产中CY8C3444LTI-110 概述
A programmable system-on-chip, or PSoC, is a mixed-signal microcontroller architecture that combines an embedded CPU with configurable analog and digital peripheral blocks. In the system hierarchy, the CY8C3444LTI-110 is a microcontroller within the broader semiconductor category, while its PSoC resources allow functions such as analog-to-digital conversion, timers, serial communication, and programmable logic to be integrated without relying on separate discrete ICs.
The headline characteristics are a 50 MHz maximum operating frequency, 16 KB of flash, 2 KB of SRAM, and a 1.71 V to 5.5 V supply range. The CY8C34 family also supports operation from DC through 50 MHz, according to the family datasheet information supplied for this device. Its integrated programmable architecture can reduce the external component count in control, sensing, and communications designs while preserving deterministic embedded software control.
This device uses the 8051 instruction set rather than an ARM Cortex core, so firmware, development tools, register expectations, and peripheral programming cannot be assumed interchangeable with Cortex-based MCUs. The 50 MHz CPU and 8-bit architecture suit compact control loops, user interfaces, protocol handling, and mixed-signal products where a larger 32-bit processor would add unnecessary cost or complexity. Exact peripheral counts, flash endurance, and electrical limits must be confirmed against the full manufacturer documentation.
Typical applications include industrial condition monitoring, low-power sensor nodes, consumer control panels, programmable audio or signal-processing interfaces, and compact communication equipment. The 1.71 V minimum supply voltage also supports systems where the MCU must operate directly from a low-energy rail, provided the external analog and digital circuits remain compatible with that voltage.
When designing around the CY8C3444LTI-110, verify every power pin, ground connection, analog reference, and high-speed signal against the package pinout and datasheet recommendations. Decouple each supply domain locally, route analog grounds according to the family guidance, and avoid assigning peripheral functions until the required routing and configuration blocks are known. The available data does not expose a verified 68-pin assignment table, so pin-level implementation should follow the manufacturer package drawing directly.
This page consolidates the verified manufacturer and distributor specifications for the CY8C3444LTI-110, identifies same-family upgrade paths, and adds engineering-focused selection guidance and application context that are not presented as a substitute for the complete PSoC 3 family datasheet.
直接替换替代料： CY8C3444LTI-110 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
CY8C3444LTI-100
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C3444LTI-050
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C3444LTI-110 最大额定值与电气特性
| Product Type | Flash-programmable PSoC 3 microcontroller |
| Product Family | CY8C34 family |
| CPU Architecture | 8-bit 8051 |
| Maximum CPU Frequency | 50 MHz |
| Flash Memory | 16 KB (16K x 8) |
| SRAM | 2 KB |
| Operating Voltage Range | 1.71 V to 5.5 V |
| Frequency Range | DC to 50 MHz |
| 封装 | 68-QFN (8 x 8 mm) |
| 安装类型 | Surface Mount |
| Core | 8051 |
| Programmable Memory Type | Flash |
CY8C3444LTI-110 68-qfn (8 x 8 mm) 引脚配置指南
CY8C3444LTI-110（68-qfn (8 x 8 mm) 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： CY8C3444LTI-110.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CY8C3444LTI-110 适用于 6 应用s: Industrial Sensor and Condition Monitoring, Low-Power IoT Sensor Node, Programmable Analog Control Interface, Consumer Control Panel and User Interface, Compact Communication Equipment, Programmable Logic and Timing Control.
Industrial Sensor and Condition Monitoring
The CY8C3444LTI-110 fits industrial monitoring systems that combine periodic sensor acquisition, local filtering, and status reporting in one controller. Its 16 KB flash supports firmware and configuration data, while 2 KB of SRAM provides working space for sampled values and protocol buffers. The 1.71 V to 5.5 V range allows use with low-energy or 3.3 V system rails. Design the analog front end and external interface devices around the family datasheet, and verify the exact ADC and timer resources before assigning them.
推荐
Low-Power IoT Sensor Node
The CY8C3444LTI-110 is appropriate for compact IoT nodes that must digitize a sensor signal and manage local control while keeping the supply rail low. Its verified 1.71 V minimum operating voltage supports reduced-energy architectures, and the 50 MHz 8051 CPU provides headroom for protocol processing and time-critical control tasks. Sixteen kilobytes of flash and 2 KB of SRAM should be budgeted before enabling additional communications stacks. Confirm the device's sleep-mode resources and wake-up behavior in the full family documentation.
推荐
Programmable Analog Control Interface
The PSoC architecture makes the CY8C3444LTI-110 relevant to control boards that require programmable analog and digital functions without a separate mixed-signal controller. The 50 MHz 8051 core can supervise control loops, while 16 KB of flash accommodates application firmware and calibration parameters. The 1.71 V to 5.5 V range permits integration with both low-voltage sensors and conventional 3.3 V peripherals. Peripheral allocation is design-dependent, so engineers must confirm the required block count and routing options against the family datasheet before committing a board layout.
推荐
Consumer Control Panel and User Interface
The CY8C3444LTI-110 can serve as the central controller in a compact consumer interface that coordinates buttons, indicators, a display, and a communications link. Its 50 MHz 8051 processor is suitable for menu handling and real-time input scanning, while the programmable blocks can reduce the need for separate interface hardware. The 2 KB SRAM requires disciplined buffer allocation for graphics, touch data, and serial traffic. Choose the package and peripheral assignments only after verifying the 68-QFN pinout and exact number of usable I/O pins.
推荐
Compact Communication Equipment
The CY8C3444LTI-110 is applicable to embedded communication equipment where a protocol engine, supervisory logic, and mixed-signal support must share one package. The 50 MHz 8051 core provides deterministic handling of framing and control traffic, while the 1.71 V to 5.5 V supply range supports systems built around different rail budgets. Sixteen kilobytes of flash may limit the size of sophisticated protocol stacks, so firmware budgeting is important. Confirm the exact UART, USB, and other interface resources before selecting it over a larger-memory microcontroller.
推荐
Programmable Logic and Timing Control
The CY8C3444LTI-110 can be evaluated for control systems where deterministic digital logic, counters, or timing functions benefit from PSoC programmable blocks rather than discrete logic devices. The 8051 CPU at up to 50 MHz can implement supervisory logic while the configurable hardware manages repeatable timing sequences. This mixed approach can simplify a board when peripheral requirements are modest and well defined. Validate the available programmable digital block count, routing constraints, and maximum clock assumptions in the PSoC 3 family documentation before laying out the 68-QFN board.
推荐
推荐产品汇总
工程参考数据： CY8C3444LTI-110 ——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 | CY8C3444LTI-100 | CY8C3444LTI-050 |
|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | 68-QFN (8 x 8 mm) | 68-QFN (8 x 8 mm) | 68-QFN (8 x 8 mm) |
| Product Family | CY8C34 family PSoC 3 | CY8C34 family PSoC 3 | CY8C34 family PSoC 3 |
| CPU Architecture | 8-bit 8051 | 8-bit 8051 | 8-bit 8051 |
| Verification Source | Manufacturer page and distributor listings | Same-brand family knowledge | Same-brand family knowledge |
关键差异点
- Highest-frequency selection in the compared CY8C3444 family options （对比 CY8C3444LTI-100)
- Same-family integration reduces peripheral migration risk （对比 CY8C3444LTI-050)
- Verified low-voltage operating range （对比 CY8C3444LTI-100)
设计说明
Plan the power tree around the verified 1.71 V to 5.5 V device range and the specific internal analog and digital rails shown in the family datasheet. Place local bypass capacitors directly at the relevant supply and ground pins, with separate return paths for analog and digital sections. Do not infer the number or location of supply pins from the 68-QFN package name; use the manufacturer package drawing. Confirm startup behavior, rail sequencing, and maximum supply ramp rate before designing a battery-powered implementation.
The 68-QFN 8 x 8 mm package requires careful escape-routing and exposed-pad heat-flow planning. Follow the manufacturer land pattern, solder-mask, and paste recommendations rather than creating a footprint from the package dimensions alone. Keep analog inputs away from high-current switching nodes and route reference and ground returns using the topology specified in the PSoC 3 family documentation. Verify the final pinout because no verified individual pin table was included in the supplied data.
Do not substitute a generic 8-bit MCU for the CY8C3444LTI-110 solely on CPU frequency and flash size. The PSoC programmable analog and digital blocks, routing fabric, 8051 peripherals, interrupt structure, and package pinout are family-specific. Firmware also depends on the correct PSoC Creator and device-pack environment. Validate a candidate replacement with the complete manufacturer ordering table and confirm that the programmed configuration, clock setup, and peripheral routing remain identical.
Treat the PSoC analog section as a layout-sensitive subsystem. Keep external components near their assigned pins, use short analog traces, and maintain a controlled ground reference beneath analog circuitry. Avoid long traces between PSoC pins and external passive networks because parasitic resistance and capacitance can alter filtering and conversion behavior. Where the family documentation provides example schematics for the selected peripheral function, compare the external component values and grounding with those reference arrangements before release.
合规信息
The supplied manufacturer and distributor snippets identify the PSoC 3 device and its orderable configuration but do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields remain unknown rather than being inferred from the manufacturer name or package type.
