CY8C3245LTI-129 - 50MHz 8051 PSoC 3 MCU | Infineon
部品番号: CY8C3245LTI-129 ✓ 生産中CY8C3245LTI-129 概要
A PSoC, or programmable system-on-chip, is a microcontroller architecture that integrates a CPU, flash memory, SRAM, configurable digital blocks, and analog peripherals. It belongs to the embedded MCU hierarchy and is designed to reduce the number of discrete components required for control, sensing, signal conditioning, and communications. Unlike a fixed-function mixed-signal controller, its peripheral functions can be configured through firmware and hardware registers.
Verified listings identify the CY8C3245LTI-129 as an 8051 PSoC 3 member of the CY8C32 family. The Keil component record specifies a single-core 8051 MCU operating up to 50 MHz, 32 KB of flash ROM, 4 KB of SRAM, 1 KB of data EEPROM, and 8 KB of ECC flash. It also identifies two datapointers, 20 universal digital blocks, one configurable ADC unit, 27 interrupt sources, eight priority levels, and one Peripheral Hub Unit with eight parallel access paths.
The 32 KB flash provides on-chip program storage, while the configurable UDBs support digital control and signal-processing functions. The integrated ADC and datapointers make the device relevant to industrial control, sensor acquisition, communication modules, compact consumer equipment, and embedded products that benefit from programmable analog and digital peripherals.
Arrow identifies the operating voltage range as 2.5 V, 3.3 V, and 5 V, while Infineon’s related CY8C3245LTI-139 listing gives a range of 1.71 V to 5.5 V. Because the exact full electrical limits and temperature grade for the target suffix are not included in the supplied records, engineers should confirm them against the manufacturer datasheet before release.
The 68-QFN package is compact but requires careful PCB layout, exposed-pad thermal management, and assembly-process control. Designers should verify pin functions, programming requirements, clock behavior, and peripheral assignments in the official documentation before committing the footprint to a production board.
ドロップイン代替品: CY8C3245LTI-129 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
CY8C3245LTI-139
✅ ドロップイン📋 参考代替品（カタログ未掲載）
CY8C3245LTI-129 最大定格＆電気的特性
| Product Type | PSoC 3 programmable system-on-chip microcontroller |
| Microcontroller Family | CY8C32xx |
| Processor Core | Single-core 8051 |
| 最大クロック周波数 | 50 MHz |
| Program Memory Size | 32 KB flash ROM (32K x 8) |
| SRAM Size | 4 KB |
| Data EEPROM | 1 KB |
| ECC Flash | 8 KB |
| Universal Digital Blocks | 20 |
| Configurable ADC Unit | 1 |
| Datapointers | 2 |
| Interrupt Sources | 27 |
| Interrupt Priority Levels | 8 |
| Peripheral Hub Unit | 1 with 8 parallel access paths |
| Flash Protection Levels | 4 |
| Supply Voltage Options | 2.5 V, 3.3 V, and 5 V |
| パッケージ | 68-QFN, 8 x 8 mm |
| Exposed Pad | Present |
| 実装タイプ | Surface mount |
CY8C3245LTI-129 68-qfn, 8 x 8 mm ピン配置ガイド
CY8C3245LTI-129 (68-qfn, 8 x 8 mm パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: CY8C3245LTI-129.
詳細は データシート をご参照ください。
主な用途
CY8C3245LTI-129 の用途: 6 件s: Industrial Sensor Acquisition, Programmable Control Logic, Communication Gateway Controller, Motor and Actuator Control, Connected Consumer Products, Data Acquisition and Logging.
Industrial Sensor Acquisition
The CY8C3245LTI-129 fits compact sensor-acquisition systems because it combines a 50 MHz 8051 core, one configurable ADC unit, 20 universal digital blocks, and 4 KB of SRAM in a single 68-QFN device. The MCU can supervise conversion sequencing, filtering, threshold decisions, and communication updates while avoiding separate logic devices for timing and control. Its 32 KB of flash provides dedicated space for firmware, calibration constants, and diagnostics. The verified records do not disclose ADC resolution or input bandwidth, so those values must be checked in the manufacturer datasheet before defining the analog front end. A practical design should also preserve analog and digital return paths, provide local decoupling, and validate the selected acquisition rate against the required control loop.
おすすめ
Programmable Control Logic
The CY8C3245LTI-129 is suitable for programmable control logic where a fixed sequence of timers, counters, state machines, and digital protocols is required. Its 20 universal digital blocks can be configured as functional blocks rather than implemented entirely through CPU firmware, reducing interrupt load while the 50 MHz 8051 core handles higher-level control. The 4 KB SRAM supports working state, and 32 KB of flash holds application code and configuration data. Designers should partition time-critical functions into suitable hardware blocks and reserve CPU capacity for supervisory tasks. Because the supplied records do not specify individual UDB clock limits, timer resolution, or routing flexibility, those capabilities should be verified against the official PSoC 3 documentation before finalizing the architecture.
おすすめ
Communication Gateway Controller
The CY8C3245LTI-129 can serve as a local communication gateway controller when a product needs protocol handling, data buffering, and configurable digital I/O in one MCU. The single-core 8051 processor operates up to 50 MHz, while 32 KB of flash supports networking or serial protocol code and 4 KB of SRAM provides packet-handling workspace. Its programmable digital blocks can implement additional serial, timer, or pulse-related functions and reduce CPU overhead. The verified data does not identify built-in UART, CAN, USB, or Ethernet hardware, so engineers must not assume a particular communications peripheral is present. The exact peripheral list and package-level pin multiplexing must be checked before assigning a bus. Board design should include accessible programming and debug connections, defined test points, and separation between high-speed digital routing and sensitive analog sections.
おすすめ
Motor and Actuator Control
The CY8C3245LTI-129 applies to compact actuator-control systems that combine timing, digital state management, and limited analog monitoring. Its 50 MHz core can execute motor-control supervisory logic, while 20 universal digital blocks can implement timers, counters, pulse capture, and other deterministic functions. The configurable ADC can support position, current, or temperature supervision, although the supplied records do not specify resolution, input range, or sampling performance. Engineers should therefore use the ADC only within confirmed limits and consider a dedicated amplifier when signal conditioning requires greater precision. The 68-QFN package saves board area but concentrates heat and makes exposed-pad layout important. Firmware should include safe states, disabled-output initialization, and validated motion limits to reduce risk during startup or fault recovery.
おすすめ
Connected Consumer Products
The CY8C3245LTI-129 is suitable for connected consumer products that need embedded control, configurable sensing, and compact packaging without a large external peripheral set. The 8051-compatible core runs up to 50 MHz, while 32 KB of flash, 4 KB of SRAM, and a configurable ADC provide resources for user-interface logic, sensor conditioning, and local protocol handling. Its 68-QFN 8 x 8 mm package supports compact board layouts, although exposed-pad assembly and thermal verification must be included in manufacturing planning. The universal digital blocks can offload timers, counters, and simple state-machine functions from the CPU. Product teams should verify the actual peripheral inventory, GPIO count, and package pin multiplexing before committing to a board because those details are not fully exposed in the supplied distributor snippets.
おすすめ
Data Acquisition and Logging
The CY8C3245LTI-129 can support compact data-acquisition and logging products that periodically measure inputs, apply control logic, and retain operational information. The configurable ADC and 20 universal digital blocks provide a foundation for acquisition sequencing and digital preprocessing, while the 50 MHz 8051 core handles records, timestamps, and interface commands. Its 32 KB flash and 1 KB data EEPROM offer internal storage for firmware, configuration, and limited persistent parameters. Four kilobytes of SRAM may require careful buffering for high-rate or multi-channel workloads. Because ADC resolution, sample rate, and SRAM architecture are absent from the supplied records, designers must validate the throughput budget in the official documentation. A robust design should also include data-integrity checks and clearly define what happens when logging storage or communications become unavailable.
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おすすめ製品の概要
エンジニアリング参考データ: CY8C3245LTI-129 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | CY8C3245LTI-139 |
|---|---|---|
| Package | 68-QFN (8 x 8 mm) | 68-QFN - same listed package |
| Brand | Infineon Technologies | Infineon Technologies |
| Processor Core | Single-core 8051 | 8-bit 8051 |
| Maximum Clock Frequency | 50 MHz | 50 MHz |
| Program Memory | 32 KB flash | 32 KB flash |
| SRAM | 4 KB | 4 KB |
| Supply Voltage | 2.5 V, 3.3 V, and 5 V listed | 1.71 V to 5.5 V |
| Product Family | PSoC 3 CY8C32 | PSoC 3 CY8C32 |
主な差別化要因
- Close same-family replacement candidate （vs CY8C3245LTI-139)
- Integrated programmable mixed-signal resources （vs CY8C3245LTI-139)
- Established 32 KB flash configuration （vs CY8C3245LTI-139)
設計ノート
Treat the 68-QFN exposed pad as both an electrical connection and a thermal path. Follow the manufacturer land pattern, pin-1 orientation, solder-mask definition, and paste-volume recommendations exactly. Do not infer the pad net or pad dimensions from a generic 68-QFN footprint because exposed-pad geometry can vary between the 8 x 8 mm device and another package using the same pin count.
Place the required bypass capacitors close to the supply and ground pins, and keep the return path through the package ground and exposed-pad arrangement specified by the datasheet. The verified records list 2.5 V, 3.3 V, and 5 V operating options, but capacitor values, voltage tolerances, and allowable ripple require confirmation from the official power-supply recommendations before schematic release.
Do not assume that every part numbered CY8C3245 has identical suffix-specific temperature, voltage, qualification, or ordering characteristics. Compare the target against the alternative’s complete ordering table and pin table. In particular, verify whether the package suffix denotes temperature grade, lead-free status, shipping form, or another manufacturing option before approving a substitute.
Reserve programming and debug access even if the final product does not expose a user interface. Confirm the supported programming interface and pin requirements in the official documentation, provide test points, and avoid routing fast or high-current signals beneath sensitive analog inputs. This makes board bring-up, firmware recovery, and production programming more reliable.
コンプライアンス情報
The supplied distributor and search snippets do not contain conclusive compliance declarations for the exact ordering code. Compliance values remain unknown rather than being inferred from general manufacturer policies.
