CY8C3445AXI-108 - 50MHz PSoC 3 MCU | Infineon
Référence : CY8C3445AXI-108 ✓ ActifCY8C3445AXI-108 Présentation
A programmable system-on-chip, or PSoC, is a mixed-signal microcontroller family that integrates a processor core, programmable digital blocks, analog resources, and configurable peripherals into one device. Its position in the semiconductor hierarchy is microcontroller -> programmable system-on-chip -> mixed-signal embedded controller. This integration can reduce the number of external components required when a design needs digital control, signal conditioning, data acquisition, or programmable timing.
The verified device data identifies an 8-bit 8051 architecture, operation from DC to 50 MHz, 32 KB of flash, and 4 KB of SRAM. The 50 MHz maximum operating frequency provides a defined performance ceiling for timing-sensitive control tasks, while 32 KB of flash supplies embedded program storage and 4 KB of SRAM supports working memory. The operating-voltage range is 1.71 V to 5.5 V, allowing the device to operate across common low-voltage embedded systems.
The CY8C3445AXI-108 is packaged in a 100-pin TQFP with a 14 x 14 mm body. This relatively high pin count provides access to the device's digital and analog resources, including external interfaces and programmable I/O paths. A 100-pin surface-mount package is more appropriate than a small-outline package when a design requires broad peripheral access or dedicated analog routing.
Typical uses include industrial control modules, sensor-conditioning systems, digital power controllers, communications equipment, and compact embedded automation platforms. The PSoC architecture is particularly useful when a board must combine deterministic digital control with programmable analog acquisition or conversion. Firmware configuration determines how the available digital and analog blocks are assigned to the intended signal chain.
Designers should verify the complete pin assignments, exposed power requirements, supported clock configurations, and decoupling requirements against the manufacturer datasheet before layout. Decoupling capacitors should be placed directly beside their associated supply pins, while sensitive analog inputs require short traces, controlled grounding, and separation from fast digital switching paths. Firmware and peripheral configuration must also be validated at the intended 1.71 V to 5.5 V supply conditions.
This product page combines verified distributor specifications, source links, application guidance, and a conservative drop-in assessment. It explicitly distinguishes documented CY8C3445AXI-108 data from unavailable pin-level details and avoids presenting unverified cross-brand replacements as guaranteed drop-in equivalents.
Alternatives de remplacement direct pour CY8C3445AXI-108 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
CY8C3445AXI-104
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
CY8C3445AXI-100
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
CY8C3445AXI-108 Valeurs maximales et caractéristiques électriques
| Device Type | 8-bit Microcontroller |
| Product Family | PSoC 3 CY8C34 |
| Processor Core | 8051 |
| Maximum Operating Frequency | 50 MHz |
| Operating Frequency Range | DC to 50 MHz |
| Flash Memory | 32 KB |
| Flash Organization | 32K x 8 |
| SRAM | 4 KB |
| Supply Voltage Range | 1.71 V to 5.5 V |
| Boîtier | 100-pin TQFP |
| Package Body Size | 14 mm x 14 mm |
| Type de montage | Surface Mount |
| Statut RoHS | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
Guide de configuration des broches du CY8C3445AXI-108 14 mm x 14 mm
Configuration des broches du CY8C3445AXI-108 (boîtier 14 mm x 14 mm). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour CY8C3445AXI-108.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
CY8C3445AXI-108 convient pour 6 applications: Industrial Sensor Conditioning, Digital Power Controller, Communications Equipment, Embedded Automation Controller, Smart Sensor Node, Consumer Control Module.
Industrial Sensor Conditioning
The CY8C3445AXI-108 fits industrial sensor-conditioning modules because it combines an 8-bit 8051-compatible core with up to 50 MHz operating frequency and programmable PSoC resources in a 100-pin TQFP. The 32 KB flash stores acquisition and control firmware, while 4 KB SRAM supports working buffers. A designer can route sensor signals through programmable analog resources, perform digital filtering, and communicate through available serial peripherals. The verified 1.71 V to 5.5 V operating range permits integration with low-voltage sensor and logic rails. Before layout, verify the exact analog pin assignments, supply pins, reference requirements, and operating-temperature grade in the manufacturer datasheet; the supplied excerpts do not provide those details.
Recommandé
Digital Power Controller
CY8C3445AXI-108 can serve as the control engine in a programmable digital power-conversion system because its 8051-compatible 8-bit processor runs up to 50 MHz and provides 32 KB of flash for control algorithms. The 4 KB SRAM is suitable for transient timing state and supervisory functions, while the PSoC architecture allows digital control and analog measurement resources to coexist on one device. In a buck, boost, or power-sequencing controller, the device could supervise feedback, update timing, and manage protection logic. Actual performance depends on the configured PSoC blocks and the precise pinout. Verify loop timing, PWM-capable I/O, ADC resources, and supply sequencing against the exact datasheet before committing to the design.
Recommandé
Communications Equipment
The CY8C3445AXI-108 is appropriate for compact communications and protocol-conversion equipment that requires an embedded 8051-compatible controller with flexible programmable I/O. Its 50 MHz operating ceiling supports time-sensitive serial handling, while 32 KB flash accommodates firmware and 4 KB SRAM provides packet or buffer working space. A designer can use the device for a low-speed protocol bridge, UART-to-fieldbus gateway, or embedded communication controller where a larger application processor would be unnecessary. The broad 1.71 V to 5.5 V range simplifies interface planning, but the verified data does not identify specific UART, SPI, or CAN blocks. Verify available peripherals, package pins, clock requirements, and EMC layout practices before schematic capture.
Recommandé
Embedded Automation Controller
The CY8C3445AXI-108 can support embedded automation controllers where deterministic logic, configurable I/O, and mixed-signal functions must be consolidated. The 8-bit 8051-compatible core executes up to 50 MHz, allowing the firmware to coordinate sensors, actuators, interlocks, and status indicators. Its 32 KB flash provides room for a production-oriented control program, and the 4 KB SRAM supports immediate working data. The 100-pin TQFP offers more external connection options than a small microcontroller package, which is useful when multiple discrete I/O paths are required. The PSoC architecture can reduce external support circuitry when suitable analog and digital blocks are available. Confirm exact peripheral availability, pin multiplexing, timing limits, and temperature coverage in the manufacturer documentation before design release.
Recommandé
Smart Sensor Node
The CY8C3445AXI-108 is well matched to smart sensor nodes that must combine local conditioning, control, and data handling. The PSoC 3 architecture integrates programmable digital and analog capabilities with an 8051-compatible 8-bit core, reducing the need for separate signal-conditioning and logic devices when the required functions are supported. Operation up to 50 MHz supports responsive sampling and filtering, while 32 KB flash stores node firmware and 4 KB SRAM provides temporary measurement storage. The 1.71 V to 5.5 V supply range supports low-voltage sensor platforms. Before schematic design, verify ADC characteristics, analog reference requirements, sensor-interface pins, sleep behavior, and exact power rails because these values are not present in the verified distributor excerpts.
Recommandé
Consumer Control Module
CY8C3445AXI-108 can be used in a compact consumer-control module when the product needs programmable sensing and control but does not require a high-performance application processor. The 8051-compatible core operates up to 50 MHz, the 32 KB flash holds embedded application code, and 4 KB SRAM supports local control state. Configurable PSoC blocks may implement timers, serial interfaces, signal conditioning, and other mixed-signal functions within one package. The 100-pin TQFP provides extensive routing options for external controls and sensors, while the 1.71 V to 5.5 V operating range simplifies adaptation to common embedded supply rails. Designers must confirm the exact user-interface pins, required external passive components, and exact operating-temperature limits before production qualification.
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Récapitulatif des produits recommandés
Données de référence d'ingénierie pour CY8C3445AXI-108 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | CY8C3445AXI-104 | CY8C3445AXI-100 |
|---|---|---|---|
| Manufacturer | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | 100-pin TQFP (14 x 14 mm) | 100-pin TQFP (14 x 14 mm) | 100-pin TQFP (14 x 14 mm) |
| Product Family | PSoC 3 CY8C34 | PSoC 3 CY8C34 | PSoC 3 CY8C34 |
| Processor Core | 8051, 8-bit | 8051, 8-bit | 8051, 8-bit |
Principaux différenciateurs
- Verified operating performance (vs CY8C3445AXI-104)
- Broad device integration (vs CY8C3445AXI-100)
- Low-voltage operating range (vs CY8C3445AXI-104)
Notes de conception
Design the supply network for the verified 1.71 V to 5.5 V operating range, but do not assign individual supply pins or capacitor values until the exact pinout and recommended application circuit have been checked in the manufacturer datasheet. Place each required decoupling capacitor adjacent to its associated supply and ground pins, use a short and low-impedance return path, and avoid sharing narrow ground traces between sensitive analog and switching peripherals. The available data does not state quiescent current, peak current, or permitted supply sequencing, so those values require direct verification.
Reserve clean routing for the 100-pin TQFP and keep analog inputs away from digital outputs and high-edge-rate signals. Because the exact pin numbers are not exposed in the supplied source excerpts, begin the layout from the manufacturer package drawing rather than from a generic 100-pin symbol. Confirm pin-1 orientation against the board footprint, maintain suitable solder-mask and copper land patterns for a 14 x 14 mm TQFP, and review thermal performance and assembly tolerances with the package drawing.
Do not treat a shared PSoC 3 family name or identical package as proof that every ordering suffix is interchangeable. CY8C3445AXI-104 is strongly supported by the supplied web data, while CY8C3445AXI-100 is an LLM-sourced same-family candidate that still requires ordering-table confirmation. Before substitution, compare frequency grade, temperature range, electrical limits, pin configuration, package markings, and lifecycle status. Also verify that the programmed PSoC configuration and firmware remain valid for the selected suffix.
Informations de conformité
The supplied verified data does not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is recorded as not applicable because this is an industrial embedded microcontroller rather than an automotive-qualified device in the provided evidence; no automotive qualification claim was found.
