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Infineon Technologies CY8C26643-24AIT
- Part No.:
- CY8C26643-24AIT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
CY8C26643-24AIT.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 44TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,110
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Product details
Overview
CY8C26643-24AIT 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 UART, SPI, PWM, CRC). It operates at up to 24 MHz with internal 24/48 MHz oscillator and supports 3.0–5.25 V supply in industrial temperature range (−40 °C to +85 °C), used in embedded sensor interface and motor control subsystems.
For engineers reviewing the CY8C26643-24AIT datasheet, CY8C26643-24AIT pinout, CY8C26643-24AIT application, or CY8C26643-24AIT equivalent, key selection criteria include on-chip analog configurability, ISSP™ in-system programming capability, Flash endurance (50,000 erase/write cycles), and support for precision timing via internal PLL with external 32.768 kHz crystal option.
Technical Context
The CY8C26643-24AIT implements a fully static CMOS architecture with dual-clock domains: one for digital logic (M8C core and digital PSoC blocks) and another for analog subsystems (programmable gain amplifiers, filters, comparators). Its analog array supports simultaneous operation of multiple signal chains - e.g., a Delta-Sigma ADC feeding a digital filter block while a DAC drives an op-amp output stage.
Digital PSoC blocks provide hardware-accelerated functions including full-duplex UART with automatic baud rate detection, SPI master/slave with configurable frame format, and PWM generators with programmable deadband insertion - all routed through a flexible interconnect matrix without external glue logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture with 24 MHz max clock; enables deterministic real-time control loops without cache or pipeline stalls. |
| Flash Memory | 16 KB program memory with 50,000 erase/write cycles; supports partial updates and EEPROM emulation (up to 2,304 bytes). |
| Analog Blocks | 12 user-configurable analog PSoC blocks; deliver mixed-signal functionality such as 11-bit Delta-Sigma ADC or 9-bit DAC without external components. |
| Digital Blocks | 8 programmable digital PSoC blocks; implement UART, SPI, PWM, timers, and CRC in hardware with GUI-defined routing. |
| Operating Voltage | 3.0 V to 5.25 V supply; includes on-chip switch-mode voltage pump enabling operation down to 1.0 V in ultra-low-power sleep modes. |
| Temperature Range | −40 °C to +85 °C industrial grade; qualified for use in motor drive feedback circuits and industrial HMI front-ends. |
| Clock Sources | Internal 24/48 MHz oscillator (±2.5%), optional 32.768 kHz crystal input for PLL-based precision timing; eliminates need for external crystal oscillator IC. |
Pinout & Package
Package: 48-pin TQFP (7 mm × 7 mm, 0.5 mm pitch), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Primary power supply | 3.0–5.25 V main supply rail for core, analog, and I/O domains; decoupling required per datasheet layout guidelines. |
| VSS | Ground reference | Dedicated analog/digital ground plane connection point; must be tied to low-impedance system ground. |
| XIN/XOUT | External crystal oscillator terminals | Supports 32.768 kHz crystal for precision RTC or PLL reference; internal load capacitors configurable via register. |
| P0[0]–P0[7] | General-purpose I/O port | Configurable Schmitt-trigger inputs or 25 mA logic outputs; support interrupt-on-change and analog input routing to PSoC blocks. |
| P1[0]–P1[7] | General-purpose I/O port | Same electrical characteristics as Port 0; additional pins routed to analog modulator and comparator bus for sensor signal conditioning. |
| SWD | Serial Wire Debug interface | 2-pin debug interface supporting ISSP™ programming and real-time debugging; replaces traditional JTAG overhead. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Analog Array | 12 independent analog PSoC blocks enable concurrent ADC, DAC, PGA, and filter functions - eliminating discrete op-amp and ADC ICs in sensor front-ends. |
| GUI-Based Peripheral Configuration | PSoC Designer software auto-generates register initialization code and interconnect routing - reducing firmware development time for mixed-signal applications by >40% versus hand-coded MCU solutions. |
| In-System Serial Programming (ISSP™) | Field-upgradable Flash via SWD using only two pins and host-controlled clock; supports secure partial updates without erasing entire memory space. |
| Dual Clock Domains | Independent analog and digital clock trees prevent noise coupling; analog subsystem can run from low-jitter crystal source while digital core uses internal oscillator for power savings. |
| Low-Voltage Operation Mode | On-chip switch-mode voltage pump sustains CPU and SRAM operation at 1.0 V supply - enabling battery-powered designs with extended shelf life. |
Applications
| Industrial Sensor Interface | Motor Control Feedback |
|---|---|
Use Scenario: Condition signals from RTD, thermocouple, or bridge-based pressure sensors in factory automation nodes. IC Role / Device Role / Timing Role: Configurable analog PSoC blocks perform cold-junction compensation, programmable gain amplification, and 11-bit Delta-Sigma conversion; digital blocks handle SPI communication to PLC master. Use Value: Replaces discrete instrumentation amplifier + ADC + microcontroller combo; reduces BOM count by 3–5 components and PCB area by 35%. | Use Scenario: Monitor current, position, and temperature in BLDC motor drives for HVAC and appliance applications. IC Role / Device Role / Timing Role: Simultaneous sampling of three-phase current via analog modulator; digital PWM blocks generate gate-drive signals with <100 ns deadband control. Use Value: Enables single-chip closed-loop control with <5 µs loop latency; eliminates external current-sense amplifier and PWM generator ICs. |
| Programmable HMI Front-End | Smart Actuator Controller |
Use Scenario: Drive segmented LCD displays and process tactile button inputs in industrial panel meters and diagnostic tools. IC Role / Device Role / Timing Role: Dedicated LCD controller PSoC block drives up to 4×32 segments; GPIO interrupts detect keypresses; UART transmits status to host MCU. Use Value: Integrates display driver, touch interface, and communication interface - removing need for separate LCD driver IC and GPIO expander. | Use Scenario: Execute local decision logic and safety monitoring in valve actuators and solenoid controllers with fieldbus connectivity. IC Role / Device Role / Timing Role: Low-voltage detection triggers safe shutdown; watchdog timer enforces firmware liveness; UART implements Modbus RTU slave protocol. Use Value: Meets SIL-2 functional safety requirements via hardware-enforced reset and voltage supervision - no external supervisor IC required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C26443-24AXI | Same architecture but 8 KB Flash, 128 bytes SRAM, and 32-pin SSOP package; lacks two analog PSoC blocks. | Suitable for cost-sensitive, space-constrained designs with reduced analog channel count (e.g., simple thermostats). | Select when analog resource demand is ≤10 blocks and PCB footprint must be minimized. |
| CY8C27443-24AXI | Newer silicon revision (Rev. D → Rev. E); adds enhanced Flash security, improved ADC SNR (+2 dB), and extended temperature range (−40 °C to +105 °C). | Required for automotive under-hood applications or industrial environments exceeding 85 °C ambient. | Choose for new designs requiring longer product lifecycle, higher reliability, or extended thermal operation. |
Compared with CY8C26443-24AXI, the CY8C26643-24AIT provides greater analog flexibility and memory headroom for complex sensor fusion; versus CY8C27443-24AXI, it trades enhanced security and thermal rating for lower unit cost and legacy toolchain compatibility.
Availability
CY8C26643-24AIT is available at Aetrix Electronics and suitable for industrial sensor interface, motor control feedback, and programmable HMI front-end applications requiring stable component supply and long-term manufacturing continuity.
Supply support for CY8C26643-24AIT 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) is a fabless semiconductor company specializing in programmable embedded systems, USB controllers, and PSoC architectures since 1982.
The CY8C26xxx family was designed to replace multi-chip MCU + analog peripheral combinations in cost-sensitive industrial and consumer embedded systems - emphasizing rapid prototyping via PSoC Designer and minimal external component count.
FAQ
Is CY8C26643-24AIT supported by current PSoC Designer versions?
Yes, CY8C26643-24AIT is fully supported in PSoC Designer 5.4 SP2 and earlier versions. While newer PSoC 4/6 devices use PSoC Creator or ModusToolbox, legacy CY8C26xxx projects retain full compilation, debugging, and ISSP™ programming capability in the original IDE without migration.
What is the maximum achievable resolution for analog measurements using its Delta-Sigma ADC?
The Delta-Sigma ADC achieves up to 11-bit effective resolution at 120 SPS with integrated digital filtering. At higher sample rates (e.g., 1 kSPS), resolution drops to 9 bits due to reduced oversampling ratio; actual ENOB depends on external noise coupling and reference stability per layout practices in the device datasheet.
Does CY8C26643-24AIT support hardware-based cryptographic operations?
No, CY8C26643-24AIT does not include dedicated cryptographic accelerators or secure key storage. It offers Flash code protection via lock bits and ISSP™ disable, but lacks AES, SHA, or TRNG hardware - making it unsuitable for applications requiring FIPS 140-2 or Common Criteria certified encryption.
Can the internal voltage reference be used for both ADC and DAC simultaneously?
Yes, the on-chip 1.2 V bandgap reference can serve as the reference source for both Delta-Sigma ADC and 9-bit DAC concurrently. The reference is internally buffered and stable across temperature; however, simultaneous high-current analog output switching may introduce minor transient error (<0.5% FS) requiring external decoupling per Section 10.4 of the datasheet.
CY8C26643-24AIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 44-LQFP
- Series:
- PSOC™1 CY8C26xxx
- Packaging:
- Tape & Reel (TR)
- 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:
CY8C26643-24AIT FAQ
1.How can I place an order for CY8C26643-24AIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C26643-24AIT 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 CY8C26643-24AIT reliable?
The price and inventory of CY8C26643-24AIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C26643-24AIT is usually 5 days.
3.What payment methods are accepted for CY8C26643-24AIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C26643-24AIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C26643-24AIT?
CY8C26643-24AIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C26643-24AIT 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 CY8C26643-24AIT?
For technical support, including CY8C26643-24AIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C26643-24AIT requirements.
6.How does Aetrix verify that CY8C26643-24AIT is sourced from the original manufacturer or authorized distributors?
All CY8C26643-24AIT 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 CY8C26643-24AIT meets industry standards.
7.What is the process for return or replacement of CY8C26643-24AIT?
All CY8C26643-24AIT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C26643-24AIT, 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 CY8C26643-24AIT part is unused and in its original packaging.
Return procedure for CY8C26643-24AIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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