CY8C3446LTI-074 50MHz 64KB Flash PSoC 3 | Infineon
부품 번호: CY8C3446LTI-074 ✓ 활성CY8C3446LTI-074 개요
A programmable system-on-chip, or PSoC, is a mixed-signal microcontroller architecture that integrates a CPU with configurable digital blocks, analog conversion functions, and specialized peripherals. Within the semiconductor hierarchy, the CY8C3446LTI-074 is a microcontroller, a programmable controller, and a system-on-chip device. Its PSoC architecture allows designers to use programmable blocks for digital functions while retaining analog peripherals such as ADCs, DACs, comparators, and programmable gain amplifiers.
The device operates with an 8051 CPU at up to 50 MHz and includes 64 KB of flash program memory, 8 KB of SRAM, 2 KB of data EEPROM, and 8 KB of ECC flash. Its peripheral hub provides eight parallel access paths, while 24 universal digital blocks support configurable digital logic and communication functions. The device also includes a configurable ADC unit, two data pointers, an interrupt system with 27 sources and eight priority levels, and four flash protection levels.
The 68-QFN package measures 8 x 8 mm according to distributor listings, supporting compact PCB layouts in consumer, industrial, communications, and control equipment. Its 1.71 V to 5.5 V operating range permits operation from common low-voltage digital rails. The integrated programmable resources can reduce the number of discrete components needed for control, signal conditioning, and communication tasks, although the exact peripheral assignments and available divider, timer, and communication configurations must be confirmed in the manufacturer datasheet.
Typical applications include industrial control panels, building automation modules, sensor-conditioning systems, motor and actuator controllers, low-cost data loggers, and compact communications equipment. The combination of 64 KB flash, 8 KB SRAM, 24 universal digital blocks, and analog peripherals supports applications that need both deterministic embedded control and flexible signal acquisition. Software can configure many peripherals, simplifying product variation without changing the PCB.
When designing a board around the CY8C3446LTI-074, verify the exposed-pad and QFN assembly requirements, provide all specified bypass capacitors, and confirm the exact pin multiplexing in the device datasheet. Programming, clocking, and low-power behavior should also be validated with the current Cypress or Infineon PSoC Creator tooling before production release.
This page consolidates verified distributor specifications, package details, procurement information, and practical design guidance for engineers evaluating the CY8C3446LTI-074. It also distinguishes directly documented PSoC 3 family variants from unsupported cross-package substitutions, helping BOM decisions remain grounded in available technical evidence.
드롭인 대체품: CY8C3446LTI-074 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
CY8C3446LTI-085
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
CY8C3446LTI-073
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
CY8C3446LTI-074 최대 정격 & 전기적 특성
| Device Type | PSoC 3 programmable system-on-chip microcontroller |
| CPU Core | 8-bit 8051 |
| Maximum CPU Frequency | 50 MHz |
| Program Memory | 64 KB flash |
| Flash Organization | 64K x 8 bits |
| SRAM | 8 KB |
| Data EEPROM | 2 KB |
| ECC Flash | 8 KB |
| Operating Voltage Range | 1.71 V to 5.5 V |
| Universal Digital Blocks | 24 |
| Peripheral Hub Unit | 1 PHUB with 8 parallel access paths |
| Configurable ADC Unit | 1 |
| Data Pointers | 2 |
| Interrupt Sources | 27 |
| Interrupt Priority Levels | 8 |
| Flash Protection Levels | 4 |
| 패키지 | 68-QFN, 8 x 8 mm |
| 실장 유형 | Surface mount |
CY8C3446LTI-074 68-qfn, 8 x 8 mm 핀 구성 가이드
CY8C3446LTI-074(68-qfn, 8 x 8 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: CY8C3446LTI-074.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
CY8C3446LTI-074 적합 용도: 6 애플리케이션s: Industrial Control Panels, Building Automation Modules, Sensor Signal Conditioning, Motor and Actuator Control, Low-Cost Data Loggers, Compact Communications Equipment.
Industrial Control Panels
The CY8C3446LTI-074 fits compact industrial control panels that need local sensing, deterministic logic, and nonvolatile firmware in one controller. Its 50 MHz 8051 CPU supports responsive control tasks, while 24 universal digital blocks can implement configurable timing, signal routing, and communication functions without relying on a separate programmable logic device. With 64 KB flash, 8 KB SRAM, 2 KB EEPROM, and 8 KB ECC flash, the device can retain operating parameters and support more elaborate control logic than a basic 8-bit MCU. The configurable ADC unit is useful for monitoring analog process inputs. Before production use, confirm the industrial temperature range, isolation strategy, and exact peripheral assignments in the manufacturer datasheet.
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Building Automation Modules
The CY8C3446LTI-074 is suitable for distributed building-automation nodes that combine sensor acquisition, relay or valve control, and serial communications in a compact board. Its 24 universal digital blocks provide configurable pulse capture, timing, and protocol assistance, while the configurable ADC unit can handle analog sensing channels. The 8-bit 8051 core operates up to 50 MHz, giving the firmware sufficient throughput for coordination, debouncing, diagnostics, and communications. The 1.71 V to 5.5 V range supports common embedded rails, and the 68-QFN 8 x 8 mm package simplifies dense multi-function modules. Field deployment still requires verification of temperature ratings, watchdog strategy, low-power behavior, and pin-level peripheral reuse.
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Sensor Signal Conditioning
The CY8C3446LTI-074 can serve as the central controller in a compact sensor-conditioning module because it combines a configurable ADC unit with programmable digital blocks and an 8051 CPU operating up to 50 MHz. Engineers can use the universal digital blocks for timing, filtering support, or interface logic while firmware handles scaling, calibration, threshold decisions, and diagnostics. Its 64 KB flash accommodates application code and configuration, while 8 KB SRAM supports working buffers and 2 KB EEPROM provides parameter storage. The 8 x 8 mm QFN package also reduces board area when sensor electronics are densely integrated. Signal accuracy, ADC resolution, reference quality, and channel multiplexing must be confirmed from the full manufacturer datasheet before setting performance expectations.
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Motor and Actuator Control
The CY8C3446LTI-074 can coordinate stepper-motor, valve, relay, or actuator-control functions where deterministic timing and compact programmable logic are valuable. Its 50 MHz 8051 CPU handles motion-state logic, while the 24 universal digital blocks can be configured for timer, counter, capture, or communications functions that reduce reliance on fixed peripherals. The 68-QFN 8 x 8 mm package is useful where the controller must sit close to power stages and connectors. The 64 KB flash and 8 KB SRAM support more complex sequencing than a minimal microcontroller. Drive transistors, protection networks, current sensing, and thermal management remain external design responsibilities, and the exact package pin assignments must be verified before layout is released.
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Low-Cost Data Loggers
The CY8C3446LTI-074 can serve as the control processor in a low-cost, low-power data logger because it provides 64 KB flash for program storage, 8 KB SRAM for working data, 2 KB EEPROM for configuration, and 8 KB ECC flash for protected information. Its 50 MHz 8051 CPU is sufficient for sampling coordination, file formatting, and communications, while the configurable ADC unit supports analog sensor acquisition. Universal digital blocks can implement additional capture or interface functions when required. The low-voltage 1.71 V to 5.5 V operating range helps simplify power architecture in portable equipment. Battery life, data-retention endurance, ADC accuracy, and the device’s supported low-power modes must be evaluated from the manufacturer documentation before a field-ready design is approved.
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Compact Communications Equipment
The CY8C3446LTI-074 is appropriate for compact communications equipment that needs a dedicated control MCU alongside programmable digital logic. The 24 universal digital blocks can support configurable serial, timing, or protocol-related functions, while the 8051 CPU at up to 50 MHz manages framing, addressing, diagnostics, and system control. Its 64 KB flash and 8 KB SRAM provide a practical balance for protocol stacks and buffering, and the compact 68-QFN 8 x 8 mm package supports space-constrained equipment. RF, high-speed transceiver, isolation, and impedance-controlled interfaces are not implied by the available data and would require separate circuitry. Confirm the exact UDB routing, timing tolerance, operating temperature, and peripheral conflicts in the family datasheet.
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추천 제품 요약
엔지니어링 참조 데이터: CY8C3446LTI-074 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | CY8C3446LTI-085 | CY8C3446LTI-073 |
|---|---|---|---|
| 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 Type | PSoC 3 programmable system-on-chip | PSoC 3 CY8C34 family microcontroller | PSoC 3 CY8C34 family microcontroller |
| CPU Core | 8-bit 8051 | 8-bit 8051 | 8-bit 8051 |
| Maximum CPU Frequency | 50 MHz | 50 MHz | 50 MHz |
| Flash Memory | 64 KB | 64 KB | 64 KB |
| SRAM | 8 KB | 8 KB | 8 KB |
주요 차별점
- Verified exact-MPN resource configuration (vs CY8C3446LTI-085)
- Confirmed family-level memory capacity (vs CY8C3446LTI-073)
- Broad configurable peripheral integration (vs CY8C3446LTI-073)
설계 노트
Treat the 68-QFN as a no-lead, fine-pitch assembly and plan the land pattern from the current Infineon package drawing rather than a generic QFN footprint. Reserve the exposed pad and its required solder mask and paste geometry as specified by the datasheet. Place input, analog, and digital bypass capacitors close to their associated pins, and provide a low-impedance ground return to reduce analog and digital coupling around the configurable analog and digital blocks.
Separate sensitive analog routing from high-switching digital nets and keep the configurable ADC and reference connections away from noisy power-converter nodes. The 24 UDBs and analog peripherals can provide flexible functions, but fixed routing still matters for measurement integrity. Use a continuous ground reference, avoid routing return currents beneath the MCU, and inspect the final placement against the manufacturer recommended layout. Confirm the exposed-pad connection and thermal-via arrangement during PCB review.
Do not assume that identical CPU speed and memory capacity prove that any ordering suffix is a drop-in replacement. Verify the package drawing, pin names, exposed-pad requirements, peripheral availability, electrical limits, and ordering temperature grade for CY8C3446LTI-073 or CY8C3446LTI-085. Also verify PSoC Creator compatibility, boot configuration requirements, clock limits, and debugger programming connections before committing either candidate to a production design.
규정 준수 정보
The supplied verified results do not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. No compliance claims were inferred from distributor availability.
