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Infineon Technologies CY8C27543-24AXI
- Part No.:
- CY8C27543-24AXI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
CY8C27543-24AXI.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:783
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Product details
Overview
CY8C27543-24AXI from Cypress Semiconductor is a PSoC® 1 programmable system-on-chip featuring an M8C 8-bit Harvard architecture CPU running at up to 24 MHz, 16 KB flash, 256 bytes SRAM, and integrated analog/digital configurable blocks. It operates from 3.0 V to 5.25 V (or down to 1.0 V with on-chip switch-mode pump), supports industrial temperature range (–40 °C to +85 °C), and targets embedded control applications requiring mixed-signal integration - such as sensor interface modules with simultaneous ADC, PGA, and PWM generation.
For engineers reviewing the CY8C27543-24AXI datasheet, CY8C27543-24AXI pinout, CY8C27543-24AXI application, or CY8C27543-24AXI equivalent, key selection criteria include verified 24-MHz IMO accuracy (±2.5%), rail-to-rail analog block routing flexibility, GPIO drive strength (25 mA sink / 10 mA source), and support for ISSP-based in-system programming without external hardware.
Technical Context
The CY8C27543-24AXI implements a fixed-function digital core (M8C) paired with reconfigurable analog and digital PSoC blocks. Its 12 analog blocks support decimator-based 14-bit SAR ADCs, 9-bit DACs, PGAs with gain up to 48×, and programmable comparators - all routed via global analog interconnect. Digital resources include eight 8-bit blocks combinable into 8-/16-/24-/32-bit peripherals (e.g., dual UARTs, SPI masters/slaves, CRC/PRS generators).
Clocking is managed by multiple sources: a 24-MHz ±2.5% internal main oscillator (IMO), 32-kHz internal low-speed oscillator (ILO), optional 32.768-kHz crystal (ECO), and PLL for crystal-accurate 24-MHz derivation. Memory includes 16 KB flash (50,000 erase/write cycles), 256-byte SRAM, and EEPROM emulation - all protected by four-level flash block locking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max operation - enables deterministic real-time control with 4 MIPS throughput. |
| Flash Memory | 16 KB with 50,000 erase/write cycles and 4-level block protection - supports secure firmware updates and IP protection. |
| SRAM | 256 bytes of volatile data storage - sufficient for small state machines and interrupt context preservation. |
| Analog Blocks | 12 rail-to-rail configurable analog blocks - enable concurrent ADC (up to 14-bit), DAC (up to 9-bit), PGA, and comparator functions. |
| Digital Blocks | 8 programmable digital blocks - combinable into timers, PWMs, UARTs (up to 2), SPI (up to 2), I²C, CRC, and PRS modules. |
| Operating Voltage | 3.0 V to 5.25 V standard; down to 1.0 V using on-chip switch-mode pump - supports battery-backed or ultra-low-power sleep modes. |
| Temperature Range | –40 °C to +85 °C industrial grade - validated for use in motor control, industrial sensing, and automotive body electronics. |
Pinout & Package
Package: 44-pin TQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | 3.0–5.25 V input; powers core, analog, and digital systems - requires local 0.1 µF bypass capacitor. |
| VSS | Ground reference | Digital/analog common return; separate analog/digital ground routing recommended for precision ADC operation. |
| XIN / XOUT | Crystal oscillator terminals | Supports 32.768 kHz ECO for RTC or crystal-accurate clock generation via PLL - not required for basic IMO operation. |
| P0[0]–P0[7] | Port 0 GPIO | Configurable as analog input (8 channels), digital I/O, or analog output (4 channels); supports interrupt-on-change and 25 mA sink capability. |
| P1[0]–P1[7] | Port 1 GPIO | Same drive modes as Port 0; supports full analog/digital routing to global interconnect - critical for mixed-signal signal chain partitioning. |
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU registers and resets peripheral states - compatible with push-button or supervisor IC assertion. |
Key Features
| Feature | Design Value |
|---|---|
| In-system serial programming (ISSP) | Enables field firmware updates via two-wire interface (SDA/SCL or dedicated pins) without removing device from PCB. |
| Programmable GPIO drive modes | Eight modes per pin (pull-up, pull-down, high-Z, strong, open-drain, etc.) - eliminates need for external level shifters or bus terminators. |
| Global analog/digital interconnect | Allows any analog block output to route to any GPIO or digital block input - enables custom signal chains without PCB trace rework. |
| On-chip voltage reference | Integrated precision bandgap reference (1.2 V typical) - provides stable ADC/DAC reference independent of VDD variation. |
| Switch-mode pump (SMP) | Generates internal 1.0 V rail from VDD ≥ 3.0 V - enables sub-1.2 V logic operation and ultra-low-power sleep states. |
Applications
| Industrial Sensor Node | Motor Control Interface |
|---|---|
|
Use Scenario: Compact environmental monitoring node measuring temperature, humidity, and pressure with local signal conditioning and wireless telemetry trigger. IC Role / Device Role / Timing Role: Central mixed-signal controller performing simultaneous 12-bit ADC sampling, PGA gain adjustment, and 16-bit PWM fan speed control. Use Value: Eliminates discrete op-amps, ADC, and MCU - reduces BOM count by ≥7 components while maintaining <0.5% measurement linearity. |
Use Scenario: Brushless DC motor commutation module interfacing Hall-effect sensors and driving 3-phase gate drivers. IC Role / Device Role / Timing Role: Real-time timing engine generating synchronized 3-phase PWM with programmable dead-time insertion and fault detection. Use Value: Achieves <100 ns dead-time resolution and hardware-accelerated commutation sequencing - avoids software jitter in 20 kHz+ switching applications. |
| Capacitive Touch Panel Controller | Smart Lighting Dimming Module |
|
Use Scenario: 8-channel capacitive touch button and slider interface for appliance control panel with proximity wake-up. IC Role / Device Role / Timing Role: Dedicated CapSense™ subsystem using switched-capacitor analog blocks and PRS-based noise rejection. Use Value: Delivers >60 dB noise immunity in EMI-heavy environments and supports <5 µA deep-sleep current - extends battery life to >2 years. |
Use Scenario: DALI-compatible LED driver with color temperature tuning, thermal foldback, and overcurrent protection. IC Role / Device Role / Timing Role: Analog monitor (V/I sensing) + digital control (DALI protocol stack + PWM dimming) co-located on single die. Use Value: Enables Class II isolated design with <1% current regulation error across 10:1 dimming range - meets IEC 62386-102 compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C27443-24AXI | Same core, package, and architecture but with 8 KB flash and 128 bytes SRAM - reduced memory footprint. | Suitable for simpler control tasks without complex state machines or large lookup tables. | Select when firmware size ≤ 64 KB and RAM usage < 128 bytes - lowers cost without sacrificing peripheral compatibility. |
| CY8C27643-24AXI | Same family with 32 KB flash, 512 bytes SRAM, and identical analog/digital block count - higher memory capacity. | Required for applications needing dual firmware images, extensive calibration data storage, or multi-protocol stacks. | Choose when future firmware expansion, EEPROM emulation >1 KB, or concurrent USB + CapSense + ADC is needed. |
Compared with CY8C27443-24AXI, the CY8C27543-24AXI offers double flash and SRAM for complex algorithms without changing pinout or toolchain; versus CY8C27643-24AXI, it trades memory headroom for tighter cost control in volume production.
Availability
CY8C27543-24AXI is available at Aetrix Electronics and suitable for industrial sensor nodes, motor control interfaces, capacitive touch panels, and smart lighting dimming modules requiring stable component supply across multi-year production cycles.
Supply support for CY8C27543-24AXI includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Cypress Semiconductor (now part of Infineon Technologies) designs programmable mixed-signal ICs for embedded control, offering scalable architectures from PSoC 1 to PSoC 6.
The CY8C27x43 series belongs to the PSoC 1 family - engineered for cost-sensitive, low-power embedded systems requiring configurable analog front-ends and deterministic real-time digital control in compact packages.
FAQ
Does CY8C27543-24AXI support USB connectivity?
No. The CY8C27543-24AXI lacks native USB PHY or transceiver circuitry. It supports UART, SPI, and I²C for host communication. For USB interface, external bridge ICs (e.g., CP2102) or migration to PSoC 3/4/5LP families with integrated USB controllers is required.
What development tools are required to program CY8C27543-24AXI?
PSoC Designer v5.4 or later is mandatory - a free Windows IDE that provides drag-and-drop user module configuration, automatic API generation, and ISSP programming support. Hardware programmers include MiniProg1 or MiniProg3; no JTAG adapter is needed for standard programming.
Can the internal 24-MHz oscillator meet timing-critical UART baud rates?
Yes. The ±2.5% accuracy of the internal main oscillator (IMO) supports standard UART baud rates (e.g., 9600, 19200, 115200) with <1% error margin at 24 MHz. For 1% or tighter tolerance (e.g., 1 Mbps CAN FD), external crystal or PLL-locked clock is recommended.
Is there hardware support for cryptographic operations?
No. The CY8C27543-24AXI does not include dedicated crypto accelerators, TRNG, or secure boot features. AES or SHA operations must be implemented in firmware using M8C CPU resources - limiting throughput to ~10 kbps for 128-bit AES-ECB. For hardware crypto, consider PSoC 4 or PSoC 6 devices.
CY8C27543-24AXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 44-LQFP
- Series:
- PSOC™1 CY8C27xxx
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Verified
- Core Processor:
- M8C
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.25V
- Data Converters:
- A/D 4x14b; D/A 4x9b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C27543-24AXI FAQ
1.How can I place an order for CY8C27543-24AXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C27543-24AXI on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CY8C27543-24AXI reliable?
The price and inventory of CY8C27543-24AXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C27543-24AXI is usually 5 days.
3.What payment methods are accepted for CY8C27543-24AXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C27543-24AXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C27543-24AXI?
CY8C27543-24AXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C27543-24AXI order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CY8C27543-24AXI?
For technical support, including CY8C27543-24AXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C27543-24AXI requirements.
6.How does Aetrix verify that CY8C27543-24AXI is sourced from the original manufacturer or authorized distributors?
All CY8C27543-24AXI products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CY8C27543-24AXI meets industry standards.
7.What is the process for return or replacement of CY8C27543-24AXI?
All CY8C27543-24AXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C27543-24AXI, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CY8C27543-24AXI part is unused and in its original packaging.
Return procedure for CY8C27543-24AXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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