CY8C4124LQI-443 - 24MHz Cortex-M0 PSoC 4 MCU, 16KB Flash | Infineon
部品番号: CY8C4124LQI-443 ✓ 生産中CY8C4124LQI-443 概要
A microcontroller (MCU) is a single integrated circuit that contains a CPU core, memory and programmable peripherals on one die. The PSoC 4 family goes further by adding programmable digital and analog blocks: fixed-function peripherals are replaced by routable fabric that the designer can configure in software. In the wider hierarchy, CY8C4124LQI-443 sits as an MCU -> PSoC -> programmable SoC -> embedded processing semiconductor, giving it the flexibility of an FPGA with the cost and simplicity of a microcontroller.
Key features include a 12-bit successive-approximation-register (SAR) ADC operating at 806 ksps with differential and single-ended modes plus a channel sequencer with signal averaging, two current DACs (IDACs) for capacitive sensing on any pin, two low-power comparators that keep operating in Deep Sleep, and four 16-bit configurable timer, counter and PWM blocks. Digital peripherals route to any GPIO through the Versatile I/O system.
Technically, the device runs from a 1.71 V to 5.5 V supply and consumes only 20 nA in Stop Mode with GPIO pin wake-up. The Arm Cortex-M0 core delivers 32-bit arithmetic with a compact instruction set, while the 4 kByte EEPROM provides non-volatile parameter storage that the on-chip flash cannot deliver in a small footprint. The 40-QFN 6 x 6 mm outline keeps the board area low for cost-sensitive embedded products.
Typical uses include capacitive touch and proximity sensing panels, capacitive sensing keypads, industrial sensor nodes, compact HMI control boards, and low-power IoT devices that wake briefly to sample a signal and return to Stop Mode.
When designing around this part, mind the 24 MHz ceiling: route the 24 MHz clock away from sensitive analog inputs, keep the SAR ADC reference and its decoupling capacitor close to the supply pins, and follow the pin-description table in the manufacturer datasheet when assigning analog-capable pins.
This page brings together the manufacturer part parameters, the exact memory and analog block configuration, a drop-in replacement view of the same-package PSoC 4100 options, and practical PCB and low-power design notes that are spread across many separate documents in the original data set.
ドロップイン代替品: CY8C4124LQI-443 — 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。
CY8C4124LQI-443T
✅ ドロップイン📋 参考代替品（カタログ未掲載）
CY8C4127LQI-443
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
CY8C4144LQI-443
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
CY8C4147LQI-443
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
CY8C4167LQI-443
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
CY8C4124LQI-443 最大定格＆電気的特性
| CPU Core | Arm Cortex-M0, 32-bit |
| Maximum CPU Frequency | 24 MHz |
| Program Flash | 16 kByte (16K x 8) |
| SRAM | 4 kByte |
| EEPROM | 4 kByte |
| ADC | 12-bit SAR, 806 ksps, differential and single-ended |
| IDACs | 2 current DACs for capacitive sensing on any pin |
| Comparators | 2 low-power comparators, operational in Deep Sleep |
| Timers / Counter / PWM | 4 x 16-bit configurable blocks |
| Operating Voltage Range | 1.71 V to 5.5 V |
| Stop Mode Current | 20 nA with GPIO pin wake-up |
| GPIO Routing | Versatile I/O, any GPIO to any digital or analog peripheral |
| パッケージ | 40-QFN (6 x 6 mm) |
| 実装タイプ | Surface Mount |
| Number of I/O Pins | 40-pin package with exposed pad |
| Supply Configuration | 3 V / 5 V operation |
| Channel Sequencer | Available on SAR ADC with signal averaging |
CY8C4124LQI-443 40-qfn (6 x 6 mm) ピン配置ガイド
CY8C4124LQI-443 (40-qfn (6 x 6 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: CY8C4124LQI-443.
詳細は データシート をご参照ください。
主な用途
CY8C4124LQI-443 の用途: 6 件s: Capacitive Touch Keypads, Industrial Sensor Nodes, Battery-Powered IoT Devices, Proximity Sensing Panels, Compact HMI Control Boards, Motor and Relay Control.
Capacitive Touch Keypads
The CY8C4124LQI-443 suits capacitive touch keypads because its two on-chip current DACs can drive capacitive sensing on any pin, eliminating external charge-transfer front-end ICs. Combined with the 12-bit 806 ksps SAR ADC and its channel sequencer with signal averaging, the device can scan several sensor pads, average repeated conversions to reject noise, and keep the entire sensing chain inside a 40-QFN 6 x 6 mm footprint. The trade-off is code space: 16 kByte of flash and 4 kByte of SRAM are adequate for a compact keypad but tight if you also run a display protocol stack, so consider a 32 kByte variant when the firmware grows.
おすすめ
Industrial Sensor Nodes
In industrial sensor nodes the CY8C4124LQI-443 provides the measurement and conditioning blocks that normally need several discrete parts. The 12-bit SAR ADC samples at 806 ksps with differential inputs, which suits bridge and ratiometric sensor front ends, while the channel sequencer automates multi-channel scanning. With a 1.71 V to 5.5 V supply range, the same design works from a 3 V or 5 V industrial rail or from a regulated down-stream supply, and the 4 kByte EEPROM holds calibration coefficients without consuming flash. The 24 MHz Cortex-M0 core is fast enough for local filtering and a Modbus or UART link without adding a separate communications MCU.
おすすめ
Battery-Powered IoT Devices
The CY8C4124LQI-443 fits duty-cycled IoT devices because it draws only 20 nA in Stop Mode with GPIO pin wake-up and operates down to a 1.71 V supply, so a single-cell lithium source can power it directly. Wake on a GPIO transition lets a motion or environmental interrupt start a short active burst that samples the SAR ADC, applies filtering in the 24 MHz Cortex-M0 core, and returns to Stop Mode, keeping average current dominated by the radio duty cycle rather than the MCU. The low 20 nA figure makes the MCU a minor contributor to overall system power. The trade-off is the 16 kByte flash budget, which restricts local buffering, so transmit results rather than logging them.
おすすめ
Proximity Sensing Panels
Proximity sensing panels benefit from the CY8C4124LQI-443 because the two IDACs can drive sensor electrodes on any GPIO and the SAR ADC provides the measurement path at 806 ksps with signal averaging through the channel sequencer. This allows a single device to replace a dedicated capacitance-to-digital converter while still handling the panel scan timing and background calibration in firmware. The two low-power comparators remain operational in Deep Sleep, so a threshold interrupt can wake the Cortex-M0 core only when a change is detected. A 40-QFN 6 x 6 mm outline keeps the sensor board compact, which matters when the panel is small or the sensor sits behind a thin bezel.
おすすめ
Compact HMI Control Boards
Compact human-machine interface control boards need a microcontroller that reads buttons, drives indicators and talks to a display without a lot of glue logic. The CY8C4124LQI-443 offers four 16-bit configurable timer, counter and PWM blocks for dimming and timing, a 12-bit SAR ADC for analog control knobs, and a Versatile I/O system that routes any digital or analog peripheral to any GPIO, so the pin plan can follow the mechanical layout instead of the other way round. The 4 kByte SRAM suits short display buffers, and the 40-QFN package keeps the controller under 6 mm square. The trade-off is that the 16 kByte flash limits the size of a graphics or protocol library.
おすすめ
Motor and Relay Control
The CY8C4124LQI-443 fits small motor and relay control modules where timing accuracy and multiple PWM channels matter. Four 16-bit timer, counter and PWM blocks give independent channels for speed or position control, and the comparator inputs can supervise a current-sense or limit signal without a separate comparator IC, while the SAR ADC reads position potentiometers or motor current. Because the timers are 16-bit at up to 24 MHz, the resolution available for PWM duty and capture measurement is ample for small motors and solenoid drives. The 1.71 V to 5.5 V supply range allows the logic to run from the same protected rail as the driver electronics.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: CY8C4124LQI-443 — 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 | CY8C4124LQI-443T | CY8C4127LQI-443 | CY8C4144LQI-443 |
|---|---|---|---|---|
| Package | 40-QFN (6 x 6 mm) | 40-QFN (6 x 6 mm) - same | 40-QFN (6 x 6 mm) - same | 40-QFN (6 x 6 mm) - same |
| Brand | Infineon | Infineon | Infineon | Infineon |
| CPU Core | Arm Cortex-M0, 32-bit | Arm Cortex-M0, 32-bit - same | Arm Cortex-M0, 32-bit - same | Arm Cortex-M0, 32-bit - same |
| Maximum CPU Frequency | 24 MHz | 24 MHz - same | 24 MHz - same | 24 MHz - same |
| Program Flash | 16 kByte | 16 kByte - same | 32 kByte (+100%) | 32 kByte (+100%) |
| SRAM | 4 kByte | 4 kByte - same | 4 kByte - same | 4 kByte - same |
| EEPROM | 4 kByte | 4 kByte - same | 4 kByte - same | 4 kByte - same |
| ADC | 12-bit SAR, 806 ksps | 12-bit SAR, 806 ksps - same | 12-bit SAR, 806 ksps - same | 12-bit SAR, 806 ksps - same |
| Operating Voltage Range | 1.71 V to 5.5 V | 1.71 V to 5.5 V - same | 1.71 V to 5.5 V - same | 1.71 V to 5.5 V - same |
| Shipping Format | Tray | Tape and reel | Tray | Tray |
主な差別化要因
- Capacitive sensing front end integrated on any pin （vs CY8C4124LQI-443T)
- Smallest flash option in the drop-in set （vs CY8C4127LQI-443)
- Same footprint enables one PCB across a product family （vs CY8C4144LQI-443)
- Ultra-low standby consumption for battery designs （vs CY8C4147LQI-443)
設計ノート
Place the 40-QFN decoupling capacitors directly across the VDD and VSS pins of the 6 x 6 mm package, keeping the loop area as small as possible. Because the SAR ADC and the IDACs reference the supply rail, supply noise shows up directly as conversion error. Follow the recommended capacitor values and placement shown in the manufacturer datasheet layout section, and do not route the switching node of any adjacent converter through the analog ground region under this device.
Keep the analog traces short and guard the SAR ADC input routing. Route analog signals away from the 24 MHz clock and any PWM outputs, since the Cortex-M0 clock edges couple readily into high-impedance sensor inputs. If a resistive divider or potentiometer feeds an analog channel, keep its ground reference tied to the quiet analog ground plane and star the connection near the device, and place the input RC filter close to the ADC pin.
Estimated: with a 3.3 V supply and the 24 MHz core plus active analog blocks, average operating current is on the order of a few milliamperes, so a 1.71 V to 5.5 V LDO or a low-quiescent buck regulator is preferable to a switching supply when the SAR ADC resolution matters. In a duty-cycled design, the dominant current is normally the 20 nA Stop Mode draw plus the wake burst, so size the bulk capacitance for the average load and the peak wake current rather than for average consumption.
Do not assume that any GPIO can be used as a capacitive sensing electrode without checking the pin-description table for the analog-capable pins and their restrictions in the datasheet. A second common error is exceeding the 24 MHz operating limit when the clock is configured through the PLL or an external oscillator, and a third is leaving the SWD debug pins inaccessible. Confirm the pin assignment table in the manufacturer datasheet before committing the layout.
コンプライアンス情報
The manufacturer product page lists the device as an active PSoC 4100 ordering code, but no explicit RoHS, REACH or halogen-free declaration was captured for this specific part number.
