CY8C4125AZI-473 PSoC 4100 24MHz Cortex-M0 32KB Flash | Infineon
Артикул: CY8C4125AZI-473 ✓ АктивенCY8C4125AZI-473 Обзор
A PSoC (Programmable System-on-Chip) is a mixed-signal microcontroller family that places configurable analog and digital peripherals alongside the CPU core on the same die. Architecturally it sits between a general-purpose microcontroller and an application-specific integrated circuit: the Arm Cortex-M0 core executes the control firmware while the on-chip analog front end conditions and digitises sensor signals, replacing several discrete op-amps, filters and ADC stages. The PSoC 4 series extends this concept with a 32-bit Arm Cortex-M0 CPU core, deterministic interrupt handling and a compact cost profile suited to volume consumer and industrial products.
Key features of the CY8C4125AZI-473 include a 24 MHz operating frequency that allows the core to execute up to 24 million instructions per second, 32 kByte (32K x 8) of flash for on-chip program storage and a 12-bit successive-approximation-register ADC for analog measurement. The device is offered in a 48-TQFP package measuring 7 x 7 mm, a footprint that is widely supported by automated pick-and-place and assembly lines. Operating supply is listed as 3.3 V and 5 V, allowing the same part to serve both 3.3 V and 5 V system rails.
Because the analog peripherals and the core share the same silicon, signal conditioning is implemented in firmware rather than with external discrete components. This trims the bill of materials and gives designers a deterministic, software-defined filter characteristic that can be tuned without hardware changes. The 12-bit SAR ADC is a familiar interface for reading resistive sensors, thermistors, potentiometers and divider networks through the analog routing matrix, and the same fabric routes internal signals such as the ADC output to timers, comparators and DMA-style peripherals.
Typical applications include consumer sensor hubs, smart home controllers, industrial monitoring and control panels, battery-powered health and wellness devices, touch-driven interface modules and compact IoT nodes where a small footprint, low BOM cost and analog measurement in one package are all priorities. The 48-lead TQFP also gives generous pin count for multiple digital I/O, serial interfaces and analog routing compared with smaller 32-pin variants of the same family.
When designing around this device, confirm the pin assignment and analog routing options for your chosen board configuration using the pin-description table in the manufacturer datasheet, and budget decoupling close to the supply pins. Also verify that the 32 kByte flash budget is sufficient for your application code, since this is the smallest memory variant in the CY8C4100 family and heavier firmware may require a higher-flash sibling.
This page consolidates manufacturer specifications, ordering information, drop-in family alternatives and practical design notes so that engineers can evaluate the CY8C4125AZI-473 against other 48-pin mixed-signal MCUs without piecing together data from multiple sources.
Аналоги без доработки для CY8C4125AZI-473 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
CY8C4141AZI-473
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
CY8C4143AZI-473
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
CY8C4145AZI-473
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
CY8C4147AZI-473
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
CY8C4127AZI-473
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
CY8C4125AZI-473 Максимальные параметры и электрические характеристики
| Product Type | Programmable System-on-Chip (PSoC 4) Microcontroller |
| Device Family | PSoC 4, CY8C4100 series |
| CPU Core | Arm Cortex-M0, 32-bit |
| Maximum CPU Frequency | 24 MHz |
| Flash Memory | 32 kByte (32K x 8) |
| ADC | 12-bit SAR ADC |
| ADC Resolution | 12 bit |
| Напряжение питания | 3.3 V / 5 V |
| Корпус | 48-TQFP (7 x 7 mm) |
| Тип монтажа | Surface Mount |
| Peripheral Architecture | Configurable analog and digital peripheral fabric (PSoC programmable blocks) |
| Core Instruction Set | Arm Thumb / Armv6-M |
Руководство по цоколевке CY8C4125AZI-473 в корпусе 48-tqfp (7 x 7 mm)
Цоколевка для CY8C4125AZI-473 (корпус 48-tqfp (7 x 7 mm)). Эта цифровая ИС включает выводы GPIO, интерфейсы связи (UART, SPI, I2C) и выводы питания. Обратитесь к техническому описанию производителя для альтернативных функций выводов и вариантов конфигурации. Необходимо для проектирования встраиваемых систем и трассировки печатных плат.
Нет подробных данных о распиновке для CY8C4125AZI-473.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
CY8C4125AZI-473 подходит для 6 применениеs: IoT Sensor Hub Node, Smart Home Control Panel, Industrial Monitoring and Control, Battery-Powered Health and Wellness Device, Touch-Key and Capacitive Sensing Interface, Motor Control and Actuator Interface.
IoT Sensor Hub Node
The CY8C4125AZI-473 suits compact IoT sensor hubs because a 24 MHz Arm Cortex-M0 core handles protocol handling while the 12-bit SAR ADC reads resistive and divider-based sensors directly. The 48-TQFP 7 x 7 mm package keeps the board area small for wall-plug and battery-powered nodes, and the PSoC analog fabric replaces separate op-amp and filter stages that would otherwise raise the BOM. With 32 kByte of flash the firmware budget covers a sensor acquisition loop plus a lean wireless protocol stack; move to a higher-flash sibling if OTA image handling is required. Operating from 3.3 V or 5 V lets the same design target both battery and mains-derived rails.
Рекомендуется
Smart Home Control Panel
In a smart home controller or wall-switch panel the CY8C4125AZI-473 offers enough digital I/O in the 48-pin TQFP to drive relays, indicator LEDs and multiple serial peripherals alongside analog sensing. Its 3.3 V / 5 V supply flexibility matches both logic rails and relay driver stages commonly found in these designs. Because the on-chip analog blocks are programmable, capacitive or resistive sensing front ends and threshold detection can be tuned in firmware, shortening product bring-up compared with discrete analog designs. The 32 kByte flash limit should be checked against the required wireless stack and logging code before releasing the design to production.
Рекомендуется
Industrial Monitoring and Control
The CY8C4125AZI-473 targets industrial monitoring modules that must measure analogue process signals and respond locally. The 12-bit SAR ADC is adequate for 4-20 mA loop-derived voltages, thermistors and potentiometer position sensing, while the 24 MHz Cortex-M0 core executes filtering, alarm thresholds and Modbus-style serial framing. Choosing a 48-TQFP footprint keeps the module within standard industrial PCB stack-ups and simplifies assembly-line tooling, and the PSoC 4 family supports deterministic peripheral routing so acquisition timing is not dependent on software polling latency. Production designs should confirm the operating temperature grade and isolation requirements of the specific ordering option.
Рекомендуется
Battery-Powered Health and Wellness Device
For battery-operated wellness and health peripherals such as thermometers, sleep monitors and handheld measurement tools, the CY8C4125AZI-473 consolidates analogue measurement and control on one 24 MHz Cortex-M0 die. The 12-bit SAR ADC with programmable PSoC analog front end replaces discrete sensor amplifiers, which reduces both board area and quiescent system power. The small 48-TQFP 7 x 7 mm outline suits slim enclosures, and the device runs from a 3.3 V coin-cell or Li-ion rail. Designers should keep the analog routing to the shortest possible PCB tracks and enable the clock divider and analog power-down features during idle periods to maximise battery life.
Рекомендуется
Touch-Key and Capacitive Sensing Interface
The CY8C4125AZI-473 can act as a dedicated touch-key or slider interface controller because the PSoC 4 analog fabric provides the configurable front-end needed for capacitive sensing alongside the 12-bit SAR ADC. A single 24 MHz Cortex-M0 core scans the sensor channels, applies configurable filtering and debounce logic, and reports results over serial or to a host processor. Using the 48-pin TQFP provides enough dedicated pins for multiple electrodes plus host communication, avoiding a separate touch controller. Because the sensing parameters are software-defined, they can be re-tuned per production unit, which is a significant advantage over fixed-capacitance hardware front ends in high-volume consumer panels.
Рекомендуется
Motor Control and Actuator Interface
The CY8C4125AZI-473 is a sensible host for low-voltage actuator and stepper-control boards that also need analogue feedback. Timers and comparators inside the PSoC can drive current-sense and position signals while the 24 MHz Cortex-M0 core runs the motion profile and fault handling, and the 12-bit SAR ADC can supervise supply current or thermistor feedback. The 48-pin TQFP provides the pin count needed for stepper driver lines, encoder inputs and analogue sensing in one footprint. Keep the analogue sense traces short and separated from motor switching nodes, and confirm that the operating temperature grade of the ordering option matches the enclosure environment.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для CY8C4125AZI-473 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | CY8C4141AZI-473 | CY8C4143AZI-473 | CY8C4145AZI-473 | CY8C4147AZI-473 | CY8C4127AZI-473 |
|---|---|---|---|---|---|---|
| Package | 48-TQFP (7x7) | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same |
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| CPU Core | Arm Cortex-M0, 32-bit | Arm Cortex-M0, 32-bit | Arm Cortex-M0, 32-bit | Arm Cortex-M0, 32-bit | Arm Cortex-M0, 32-bit | Arm Cortex-M0, 32-bit |
| Maximum CPU Frequency | 24 MHz | 24 MHz | 24 MHz | 24 MHz | 24 MHz | 24 MHz |
| Flash Memory | 32 kByte | 32 kByte | 64 kByte (+100%) | 128 kByte (+300%) | 256 kByte (+700%) | 128 kByte (+300%) |
| ADC Resolution | 12-bit SAR ADC | 12-bit SAR ADC | 12-bit SAR ADC | 12-bit SAR ADC | 12-bit SAR ADC | 12-bit SAR ADC |
| Supply Voltage | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V | 3.3 V / 5 V |
| Programmable Analog and Digital Peripherals | PSoC 4 programmable blocks, smallest memory configuration in the 48-pin CY8C4100 family | PSoC 4 programmable blocks, same memory size | PSoC 4 programmable blocks, more resources | PSoC 4 programmable blocks, more resources | PSoC 4 programmable blocks, most resources in 48-pin family | PSoC 4 programmable blocks, more resources |
| Program Memory Headroom | 32 kByte baseline for firmware | 32 kByte baseline | 64 kByte, +32 kByte headroom | 128 kByte, +96 kByte headroom | 256 kByte, +224 kByte headroom | 128 kByte, +96 kByte headroom |
Ключевые отличия
- Programmable analogue front end integrated with the CPU core (против STM32F100C6T6B)
- Lowest-cost 32 kByte flash option in the 48-pin CY8C4100 family (против CY8C4145AZI-473)
- Upward-compatible memory scaling on the same PCB footprint (против CY8C4141AZI-473)
- 3.3 V and 5 V operation in one ordering code (против CY8C4127AZI-473)
Заметки по проектированию
Place the decoupling capacitor for each supply pin directly at the pin, with the ground return through the shortest possible via to the ground plane. Keep the analogue sensor traces short, keep them away from switching nodes and motor drive lines, and route them over a continuous ground reference. In a PSoC 4 design the analogue routing matrix still needs a clean PCB environment; poor grounding shows up as noise on the 12-bit SAR ADC readings and as unstable programmable-filter behaviour.
Estimated: with a 5 V rail, 3.3 V output and an 8 mA average operating current, the linear regulator section dissipates roughly (5 V - 3.3 V) x 0.008 A = about 13.6 mW. At that level the 48-TQFP package needs no special thermal treatment. Where the device runs directly from 5 V with internal core regulation, the dominant thermal term is the core itself; check the datasheet junction temperature versus ambient table against your maximum ambient and your average duty cycle before locking the enclosure design.
The most common mistake with this part is underestimating flash usage: the CY8C4125AZI-473 provides only 32 kByte, so a debug build, bootloader or wireless stack can consume the budget quickly. Check the map file early and move to a 48-pin sibling with 64, 128 or 256 kByte if the link is close to the limit. A second common pitfall is assuming the PSoC analog blocks are interchangeable with discrete op-amps - the programmable front end has different noise, offset and settling behaviour, so validate it against your accuracy target on hardware.
Use a solid ground plane under the device and place the 48-pin TQFP on a two-layer board only if the analogue and digital return currents are separated properly; otherwise add an inner ground layer. Keep the SWD/JTAG debug header reachable for production test and reserve the footprint pads so the same board can accept any 48-pin CY8C4100 variant, which lets one PCB cover several product configurations without respins.
Информация о соответствии
The manufacturer product page lists the CY8C4125AZI-473 as an active PSoC 4 device with full ordering information. RoHS, REACH, lead-free and halogen-free declarations for this specific package should be confirmed from the compliance documents linked on the Infineon product page before release to production.
