My Inquiry
My Account
Infineon Technologies CY8C26643-24AI
- Part No.:
- CY8C26643-24AI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
CY8C26643-24AI.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,315
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY8C26643-24AI from Cypress Semiconductor is a programmable System-on-Chip (PSoC™) integrating an M8C 8-bit Harvard architecture CPU, 16 KB Flash, 256 bytes SRAM, 12 configurable analog PSoC blocks (including up to 11-bit Delta-Sigma ADC and 9-bit DAC), and 8 digital PSoC blocks (supporting PWM, UART, SPI, CRC). It operates at up to 24 MHz with supply voltage from 3.0 V to 5.25 V and targets embedded control applications requiring mixed-signal reconfigurability.
For engineers reviewing the CY8C26643-24AI datasheet, CY8C26643-24AI pinout, CY8C26643-24AI application, or CY8C26643-24AI equivalent, key selection considerations include its 28-pin SOIC package, in-system serial programming (ISSP™), Flash endurance (50,000 erase/write cycles), analog block configurability, and legacy PSoC Designer toolchain dependency.
Technical Context
The CY8C26643-24AI implements a fully static CMOS design with dual-clock domains: a high-speed system clock (up to 24 MHz from internal oscillator ±2.5%) and a low-speed domain for watchdog/sleep timers. Its analog subsystem supports simultaneous operation of multiple user-configured functions-e.g., a Delta-Sigma ADC and programmable gain amplifier-via shared routing resources and dedicated analog reference control.
Digital functionality is partitioned across eight independent PSoC blocks, each supporting timer/PWM/CRC/UART/SPI configurations with flexible clock gating and interrupt routing. The M8C core features bit manipulation on I/O and memory, 8×8 multiply/32-bit accumulate, and register-speed memory transfers-enabling deterministic real-time control without external peripherals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture with 24 MHz max clock and bit-level I/O manipulation capability |
| Flash Memory | 16 KB program storage with 50,000 erase/write cycles and partial update support |
| SRAM | 256 bytes data memory for runtime variables and stack operations |
| Analog Blocks | 12 user-configurable analog PSoC blocks including Delta-Sigma ADC (11-bit), incremental ADC (12-bit), DAC (9-bit), PGA, and filters |
| Digital Blocks | 8 programmable digital PSoC blocks supporting PWM, UART, SPI, CRC, and event timing |
| Operating Voltage | 3.0 V to 5.25 V supply range; supports down to 1.0 V via on-chip switch-mode voltage pump in low-power modes |
| Temperature Range | -40 °C to +85 °C industrial grade operation with on-chip temperature sensing |
Pinout & Package
Package: 28-pin SOIC (Small Outline Integrated Circuit), body width 300 mil, lead pitch 1.27 mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Main 3.0–5.25 V supply for core and I/O; decoupling required per layout guidelines |
| VSS | Ground reference | Primary digital/analog ground return path; requires low-impedance PCB connection |
| XIN/XOUT | External crystal oscillator terminals | Supports optional 32.768 kHz crystal for precision timing or PLL reference |
| RESET | Active-low reset input | Asynchronous reset assertion clears CPU registers and halts execution until deasserted |
| SWD | Serial Wire Debug interface | Two-wire ISSP™ programming and debug channel using P1[0]/P1[1] pins |
| P0[0]–P0[7] | Port 0 general-purpose I/O | 8-bit bidirectional TTL/Schmitt-trigger pins with interrupt-on-change and configurable drive strength (25 mA) |
| P1[0]–P1[7] | Port 1 general-purpose I/O | 8-bit bidirectional pins supporting analog input/output, digital peripherals, and SWD interface |
| P2[0]–P2[3] | Port 2 general-purpose I/O | 4-bit port with analog-capable pins; used for analog reference selection and comparator inputs |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog Array | 12 independent analog PSoC blocks enable concurrent ADC, DAC, PGA, and filter functions without external components |
| Programmable Digital Array | 8 digital PSoC blocks provide hardware-accelerated PWM, UART, SPI, and CRC-reducing firmware overhead |
| In-System Serial Programming | ISSP™ allows field updates via two-wire interface without removing device from PCB |
| Flexible Clocking | Internal 24/48 MHz oscillator (±2.5%) eliminates need for external crystal in cost-sensitive designs |
| Low-Voltage Operation | On-chip voltage pump enables 1.0 V operation in sleep mode, extending battery life in portable systems |
Applications
| Motor Control Interface | Industrial Sensor Hub |
|---|---|
Use Scenario: Closed-loop DC motor speed regulation using analog current feedback and PWM output. IC Role / Device Role / Timing Role: PSoC acts as real-time controller with synchronized ADC sampling and PWM generation at 24 MHz. Use Value: Eliminates discrete op-amps, comparators, and PWM ICs; reduces BOM count by 7+ components. | Use Scenario: Multi-sensor signal conditioning and digitization (temperature, pressure, humidity) in factory automation nodes. IC Role / Device Role / Timing Role: Configures analog blocks as differential amplifiers and Delta-Sigma ADCs with programmable gain and filtering. Use Value: Achieves 11-bit effective resolution across four analog channels without external signal chain ICs. |
| Smart Lighting Controller | Home Appliance UI Panel |
Use Scenario: RGB LED dimming and color mixing with touch-sensing overlay and ambient light compensation. IC Role / Device Role / Timing Role: Manages capacitive touch sensing, PWM-driven LED outputs, and ambient ADC readings concurrently. Use Value: Integrates touch controller, LED driver, and sensor interface into single chip-reducing layer count and EMI risk. | Use Scenario: Keypad scanning, buzzer tone generation, and display backlight control in microwave oven control panel. IC Role / Device Role / Timing Role: Provides GPIO matrix scanning, programmable tone generator (using digital blocks), and analog voltage monitoring for safety cutoff. Use Value: Replaces microcontroller + discrete buzzer driver + voltage monitor IC with one programmable device. |
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 |
|---|---|---|---|
| CY8C26443-24AXI | Same family, 16 KB Flash but 16-pin SSOP package; lacks 4 analog blocks and 2 digital blocks | Suitable for space-constrained designs with reduced analog/digital peripheral demand | Select when board area is critical and full CY8C26643-24AI peripheral count is unnecessary |
| CY8C27443-24AXI | Successor family with enhanced analog performance (12-bit SAR ADC), larger Flash (32 KB), and improved ISSP™ speed | Required for new designs needing higher-resolution ADC or extended code space | Preferred for new projects where long-term availability and enhanced specs justify migration effort |
Compared with CY8C26443-24AXI, the CY8C26643-24AI provides greater analog/digital resource density in SOIC packaging; versus CY8C27443-24AXI, it trades newer architecture and higher ADC resolution for legacy toolchain compatibility and lower cost in existing designs.
Availability
CY8C26643-24AI is available at Aetrix Electronics and suitable for motor control interfaces, industrial sensor hubs, smart lighting controllers, and home appliance UI panels requiring stable component supply and long-lifecycle support.
Supply support for CY8C26643-24AI 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 and digital ICs for embedded control, with emphasis on integration, configurability, and development efficiency.
The CY8C26xxx PSoC family was engineered to replace discrete analog/digital peripherals with a single-chip solution using graphical configuration tools-targeting cost-sensitive industrial and consumer control applications before 2010.
FAQ
Is CY8C26643-24AI still recommended for new designs?
No. Cypress explicitly marks this part as "Not Recommended for New Designs" in its official documentation, advising migration to the CY8C27xxx family. While functional and supported for legacy production, new projects should use CY8C27443 or later for extended longevity, enhanced analog performance, and updated toolchain compatibility.
What development tools are required for CY8C26643-24AI?
The original PSoC Designer IDE (v5.x) is mandatory-no support exists in modern ModusToolbox or PSoC Creator. Required components include the CY3210-PSoC Eval1 development kit, MiniProg1 or MiniProg3 programmer, and legacy Windows XP/Vista-compatible drivers. Source code and User Modules are only accessible through archived Cypress downloads.
Does CY8C26643-24AI support USB or CAN interfaces?
No. This device lacks native USB transceivers or CAN protocol controllers. Communication is limited to UART, SPI, and I²C (bit-banged via GPIO). Any USB or CAN functionality must be implemented externally using bridge ICs such as CP2102 (USB-to-UART) or MCP2515 (CAN controller with transceiver).
Can CY8C26643-24AI operate below 3.0 V?
Yes-down to 1.0 V-using its integrated switch-mode voltage pump in low-power sleep modes. However, full functionality (24 MHz CPU, analog blocks, Flash programming) requires ≥3.0 V. Sub-3.0 V operation is restricted to wake-up timers, basic GPIO, and ultra-low-power monitoring tasks.
CY8C26643-24AI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 44-LQFP
- Series:
- PSOC™1 CY8C26xxx
- Packaging:
- Bag
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- M8C
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- SPI, UART/USART
- Peripherals:
- LVD, 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 1x8b, 1x11b, 1x12b; D/A 1x9b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C26643-24AI FAQ
1.How can I place an order for CY8C26643-24AI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C26643-24AI 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 CY8C26643-24AI reliable?
The price and inventory of CY8C26643-24AI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C26643-24AI is usually 5 days.
3.What payment methods are accepted for CY8C26643-24AI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C26643-24AI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C26643-24AI?
CY8C26643-24AI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C26643-24AI 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 CY8C26643-24AI?
For technical support, including CY8C26643-24AI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C26643-24AI requirements.
6.How does Aetrix verify that CY8C26643-24AI is sourced from the original manufacturer or authorized distributors?
All CY8C26643-24AI 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 CY8C26643-24AI meets industry standards.
7.What is the process for return or replacement of CY8C26643-24AI?
All CY8C26643-24AI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C26643-24AI, 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 CY8C26643-24AI part is unused and in its original packaging.
Return procedure for CY8C26643-24AI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY8C26643-24AI Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
