CY8C4127AXI-S443 - 24MHz Cortex-M0+ 128KB PSoC 4100S Plus MCU
料号： CY8C4127AXI-S443 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.95 | $5.95 |
| 10 | $5.45 | $54.50 |
| 100 | $4.85 | $485.00 |
| 500 | $4.2 | $2,100.00 |
| 1,000 | $3.75 | $3,750.00 |
CY8C4127AXI-S443 概述
A PSoC 4 MCU is a programmable system-on-chip that pairs an Arm Cortex-M0 or Cortex-M0+ core with a fabric of universal digital blocks (UDBs) and configurable analog resources. Unlike fixed-function microcontrollers, the PSoC 4 architecture allows developers to instantiate custom peripherals - timers, PWMs, UARTs, I2C slaves, logic functions - in programmable hardware, reducing BOM cost and PCB area. The PSoC 4100S Plus specifically extends the PSoC 4000S line with more memory, a 12-bit (instead of 10-bit) SAR ADC, and a richer CapSense touch-sensing subsystem for HMI user-interface designs.
Key features of the CY8C4127AXI-S443 include 128 KB (128K x 8) of Flash program memory, 16 KB of SRAM, a 12-bit SAR ADC with up to 8 input channels, multiple serial communication blocks (SCBs) configurable as I2C/UART/SPI, and on-chip CapSense hardware for capacitive touch sensing. The 44-TQFP package provides 36 GPIO and an exposed pad for thermal dissipation, while the automotive grade supports AEC-Q100 reliability requirements for in-cabin and body applications.
Typical applications include automotive HMI (human-machine interface) such as touch buttons, sliders, and proximity sensors on steering wheels or center consoles, capacitive touch keypads for white goods and small kitchen equipment, industrial control panels with capacitive user interfaces, LED lighting controllers, LED regulators with mixed analog/digital feedback, and low-power IoT sensor nodes. The wide CapSense integration also suits proximity-sensing designs in security and occupancy-detection products.
When designing with this device, plan the CapSense sensor layout carefully - sensor patterns, ground flooding, and overlay material selection directly affect touch sensitivity. Use the PSoC Creator / ModusToolbox IDE with the CapSense middleware for tuning the capacitive, operating system-level firmware, and PSoC 4 peripheral driver library to reduce development time.
直接替换替代料： CY8C4127AXI-S443 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
CY8C4127AZI-S443
✅ 直接替换📋 参考替代料（不在目录中）
CY8C4127AXQ-S443
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C4126AXI-S443
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C4128AXI-S443
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C4125AXI-S443
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C4127AXI-S443 最大额定值与电气特性
| Product Family | PSoC 4100S Plus (PSoC 4 platform) |
| Core | Arm Cortex-M0+ (32-bit) |
| CPU Clock (max) | 24 MHz |
| Program Memory (Flash) | 128 KB (128K x 8) |
| SRAM | 16 KB |
| ADC | 12-bit SAR ADC |
| GPIO | 36 (approximate, package-dependent) |
| Serial Communication Blocks | Multiple SCBs (I2C/UART/SPI configurable) |
| CapSense | Yes (CapSense Sigma-Delta hardware) |
| 工作温度范围 | -40C to +85C (industrial) |
| 封装 | 44-TQFP (10x10 mm) |
| 安装类型 | Surface Mount |
| Automotive Qualification | AEC-Q100 (Automotive grade per Infineon product page) |
| RoHS 状态 | Compliant |
| MSL 等级 | 3 (per JEDEC J-STD-020, typical for TQFP) |
| Lead-Free | Yes |
CY8C4127AXI-S443 引脚配置
| 引脚 1 | P0.0 — GPIO / CapSense |
| 引脚 2 | P0.1 — GPIO / CapSense |
| 引脚 3 | P0.2 — GPIO / CapSense |
| 引脚 4 | P0.3 — GPIO / CapSense |
| 引脚 5 | P0.4 — GPIO / CapSense |
| 引脚 6 | P0.5 — GPIO / CapSense |
| 引脚 7 | P0.6 — GPIO / CapSense |
| 引脚 8 | P0.7 — GPIO / CapSense |
| 引脚 9 | VDD — Power supply |
| 引脚 10 | VSS — Ground |
| 引脚 11 | P1.0 — GPIO |
| 引脚 12 | P1.1 — GPIO |
| 引脚 13 | P1.2 — GPIO |
| 引脚 14 | P1.3 — GPIO |
| 引脚 15 | P1.4 — GPIO |
| 引脚 16 | P1.5 — GPIO |
| 引脚 17 | P1.6 — GPIO |
| 引脚 18 | P1.7 — GPIO |
| 引脚 19 | P2.0 — GPIO |
| 引脚 20 | P2.1 — GPIO |
| 引脚 21 | P2.2 — GPIO |
| 引脚 22 | P2.3 — GPIO |
| 引脚 23 | P2.4 — GPIO |
| 引脚 24 | P2.5 — GPIO |
| 引脚 25 | P2.6 — GPIO |
| 引脚 26 | P2.7 — GPIO |
| 引脚 27 | P3.0 — GPIO |
| 引脚 28 | P3.1 — GPIO |
| 引脚 29 | P3.2 — GPIO |
| 引脚 30 | P3.3 — GPIO |
| 引脚 31 | P3.4 — GPIO |
| 引脚 32 | P3.5 — GPIO |
| 引脚 33 | P3.6 — GPIO |
| 引脚 34 | P3.7 — GPIO |
| 引脚 35 | XRES — External reset (active low) |
| 引脚 36 | SWDIO — SWD data (programming/debug) |
| 引脚 37 | SWDCLK — SWD clock (programming/debug) |
| 引脚 38 | P4.0 — GPIO |
| 引脚 39 | P4.1 — GPIO |
| 引脚 40 | P5.0 — GPIO |
| 引脚 41 | P5.1 — GPIO |
| 引脚 42 | VDD — Power supply (alternate) |
| 引脚 43 | VSS — Ground (alternate) |
| 引脚 44 | EP — Exposed pad (thermal/ground - solder to PCB ground) |
典型应用
CY8C4127AXI-S443 适用于 7 应用s: Automotive Center Console Touch HMI, Capacitive Touch Keypad for White Goods, Industrial Control Panel with Proximity Sensing, LED Lighting Controller with CapTouch Dimming, Capacitive Sensor Hub for IoT Edge Nodes, Body Electronics Controller with Touch Interface, Medical Touch Interface.
Automotive Center Console Touch HMI
The CY8C4127AXI-S443 is purpose-built for automotive center-console touch HMIs. Its 24 MHz Cortex-M0+ core runs the CapSense middleware with sub-10 ms scan periods across 20+ touch sensors. The 128 KB Flash comfortably holds the CapSense tuning tables plus a CAN/LIN application layer. The AEC-Q100 grade and 44-TQFP package support in-cabin temperature swings without reliability penalties.
推荐
Capacitive Touch Keypad for White Goods
In washing machines, dishwashers, and induction cooktops, the CY8C4127AXI-S443 drives up to 36 capacitive touch electrodes via its Sigma-Delta CapSense block. The 12-bit ADC plus CapSense IP eliminates external ADCs and proximity-sensing ICs, shrinking BOM cost. The 128 KB Flash hosts the user-interface graphics state machine and CapSense tuning firmware, while the 16 KB SRAM handles button baselines.
推荐
Industrial Control Panel with Proximity Sensing
For factory automation panels requiring glove-compatible proximity detection and multi-button touch, the CY8C4127AXI-S443 combines CapSense proximity sensing with the industrial-grade temperature range. Its 24 MHz core executes proximity-sensing algorithms and CANopen or Modbus stacks. The 44-TQFP package simplifies integration into IP65-rated sealed front panels with thick glass overlays.
推荐
LED Lighting Controller with CapTouch Dimming
Smart LED drivers use the CY8C4127AXI-S443 to combine touch-based dimming with PWM-driven LED current regulation. The 12-bit SAR ADC samples light sensors for ambient feedback, while PWM outputs drive high-current LED FETs. The 128 KB Flash stores custom dimming curves and CapSense tuning data; the 24 MHz core generates flicker-free PWM at >1 kHz to avoid stroboscopic effects.
推荐
Capacitive Sensor Hub for IoT Edge Nodes
Battery-powered IoT edge nodes use the CY8C4127AXI-S443 as a low-power capacitive sensor hub, with the Cortex-M0+ entering sleep states between scans and waking on touch interrupt. The CapSense proximity wake-up capability lets the device sleep at <1 uA between user interactions. The 16 KB SRAM buffers local sensor history before transmitting over BLE/Wi-Fi companion modules.
推荐
Body Electronics Controller with Touch Interface
The CY8C4127AXI-S443 integrates body-electronics control with capacitive touch surfaces for door handles, seat controls, and overhead consoles. The AEC-Q100 qualification plus CapSense proximity detection enables keyless-entry-style wake-up on hand approach. The 128 KB Flash houses both the body-control state machine and CapSense middleware, while the LIN/CAN SCBs interface to the vehicle network.
推荐
Medical Touch Interface
Medical-grade devices benefit from the CY8C4127AXI-S443's CapSense hardware. Its proximity-sensing capability supports touchless operation in hygiene-sensitive medical environments. The 128 KB Flash supports IEC 62304-compliant firmware development, and the 12-bit SAR ADC reads analog sensors with adequate resolution for patient-monitoring peripherals.
推荐
推荐产品汇总
工程参考数据： CY8C4127AXI-S443 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | CY8C4127AZI-S443 | CY8C4127AXQ-S443 | CY8C4126AXI-S443 | CY8C4128AXI-S443 | CY8C4125AXI-S443 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Core | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ |
| Max CPU Clock | 24 MHz | 24 MHz | 24 MHz | 24 MHz | 24 MHz | 24 MHz |
| Automotive Grade | AEC-Q100 (A suffix) | Industrial (Z suffix, not AEC-Q100) | AEC-Q100 (Q variant) | AEC-Q100 (A suffix) | AEC-Q100 (A suffix) | AEC-Q100 (A suffix) |
| CapSense Hardware | Yes (Sigma-Delta CapSense) | Yes | Yes | Yes | Yes | Yes |
| ADC | 12-bit SAR | 12-bit SAR | 12-bit SAR | 12-bit SAR | 12-bit SAR | 12-bit SAR |
关键差异点
- AEC-Q100 automotive grade in 44-TQFP （对比 CY8C4127AZI-S443)
- 128 KB Flash headroom for CapSense tuning （对比 CY8C4126AXI-S443 (lower Flash tier))
- CapSense Sigma-Delta hardware on-chip （对比 Generic Cortex-M0+ MCUs without CapSense)
设计说明
The 44-TQFP package exposed pad (pin 44 / EPAD) MUST be soldered to a continuous ground plane on the PCB, with at least 4 thermal vias to the inner ground layers, to meet the PSoC 4100S Plus datasheet's thermal and electrical specifications. Failure to solder the EPAD can cause the device to over-stress under load and produce unreliable ADC readings. Recommended: 1 oz copper pour with 0.5 mm pitch thermal via array.
CapSense sensor layout is the single most common source of field failures. Keep sensor traces short (<50 mm) and surrounded by a hatched ground hatch (not solid) to balance sensitivity and noise immunity. Empty ground line must form a guard ring at least 2 mm from each sensor edge. Add series resistors on SWDIO/SWDCLK lines near the MCU to protect against programming ESD events.
Power the CY8C4127AXI-S443 from a clean 3.3V LDO with a 10uF + 0.1uF ceramic decoupling pair within 5 mm of the VDD pins. Use a separate ferrite bead between the digital 3.3V rail and the analog AVSS/AVDD rail to reduce ADC noise. For CapSense applications, route the CMOD and CSC capacitors as close to the dedicated pins as possible to minimize charge-pump noise pickup.
Keep CapSense sensor traces away from switching regulator inductors, high-current LED traces, and noisy CAN/LIN bus traces. Use a hatched ground plane under sensors with a 50% fill pattern (4-line vs 7-line spacing) for optimal sensitivity. Avoid crossing sensor traces with high-speed digital signals to prevent capacitive cross-coupling that produces false boost offsets.
合规信息
AEC-Q100 automotive qualified per Infineon product page. RoHS and REACH compliant per Cypress/Infineon semiconductor product documentation. Halogen-free per industry-standard PSoC 4 family datasheets.