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Infineon Technologies CY8C24994-24LTXIT
- Part No.:
- CY8C24994-24LTXIT
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
CY8C24994-24LTXIT.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,080
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Product details
Overview
CY8C24994-24LTXIT from Cypress Semiconductor is a programmable System-on-Chip (PSoC) integrating an M8C 8-bit Harvard-architecture CPU, 16 KB flash, 1 KB SRAM, six analog PSoC blocks (supporting up to 14-bit ADCs and 9-bit DACs), four digital PSoC blocks (including UART, SPI, PWM, CRC), and full-speed USB 2.0 (12 Mbps) with dedicated 256-byte buffer - used in capacitive touch sensing, industrial HMI, and embedded control systems.
For engineers reviewing the CY8C24994-24LTXIT datasheet, CY8C24994-24LTXIT pinout, CY8C24994-24LTXIT application, or CY8C24994-24LTXIT equivalent, key selection criteria include USB 2.0 compliance without external crystal, ±4% internal 24/48 MHz oscillator accuracy, 3 V–5.25 V operating voltage, –40 °C to +85 °C industrial temperature range, and configurable GPIO drive strength (25 mA sink / 10 mA source).
Technical Context
The device implements a mixed-signal reconfigurable architecture where analog and digital PSoC blocks are interconnected via global analog/digital interconnect buses, enabling custom peripheral synthesis - e.g., combining analog blocks for multi-channel capacitive sensing with digital blocks for CRC-based data integrity and UART host communication.
Its clock system integrates an internal main oscillator (IMO) with ±4% tolerance at 24/48 MHz, plus a separate low-frequency internal oscillator (ILO) for sleep/wake and watchdog timing; USB timing achieves 0.25% accuracy using IMO-derived clocks without external components, satisfying USB 2.0 full-speed timing requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, up to 24 MHz operation - enables deterministic real-time control with dual 8×8 multiply + 32-bit accumulate units. |
| Flash Memory | 16 KB program flash with 50,000 erase/write cycles - supports field firmware updates and EEPROM emulation. |
| SRAM | 1 KB static RAM - sufficient for stack, variables, and USB endpoint buffers in concurrent analog/digital/USB applications. |
| USB Interface | Full-speed USB 2.0 (12 Mbps), 4 unidirectional + 1 bidirectional endpoint, 256-byte dedicated buffer - eliminates need for external PHY or crystal. |
| Analog Blocks | 6 rail-to-rail programmable analog blocks - provide configurable ADC (up to 14-bit), DAC (up to 9-bit), PGA, comparator, and filter functions per block. |
| Digital Blocks | 4 programmable digital blocks - support 8–32-bit timers/counters/PWMs, UART, SPI, CRC, PRS, and GPIO-interrupt routing. |
| GPIO | Up to 48 analog-capable inputs, 2 analog outputs (33 mA), 25 mA sink / 10 mA source drive - supports direct sensor interfacing and LED driving without external drivers. |
| Operating Voltage | 3.0 V to 5.25 V - compatible with both 3.3 V and 5 V legacy industrial bus systems. |
Pinout & Package
Package: 100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, lead-free, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Core power supply | Primary 3.0–5.25 V supply for CPU, memory, and digital/analog blocks; requires local decoupling. |
| VSS | Ground reference | Digital and analog ground common point; separation recommended for noise-sensitive analog designs. |
| XRES | External reset input | Active-low asynchronous reset; also enables in-system serial programming (ISSP) when asserted during programming mode. |
| USB_DP / USB_DM | USB differential data pair | Full-speed USB 2.0 interface pins; internally terminated; no external resistors required for standard compliance. |
| P0[0]–P0[7] | Port 0 GPIO | Configurable as digital I/O, analog input, or analog output; supports interrupt-on-change and programmable drive modes. |
| OSC_IN / OSC_OUT | Optional external crystal interface | Unused by default; internal IMO provides USB-qualified clock - external crystal only needed for tighter frequency tolerance. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Sensing (CSA) | Hardware-accelerated CSA engine across all GPIOs - enables robust touch button/slider/wheel detection with built-in noise immunity and auto-calibration. |
| Programmable Analog Blocks | Each of six analog blocks supports independent configuration of ADC, DAC, PGA, or comparator - allows simultaneous multi-function analog signal chains without external ICs. |
| Flexible Clocking | Internal 24/48 MHz IMO with 0.25% USB timing accuracy - removes crystal cost, board space, and layout complexity for USB-enabled designs. |
| I²C Master/Slave | Integrated I²C controller supporting up to 400 kHz - enables direct connection to sensors, EEPROMs, or displays without bit-banging or external controllers. |
| ISSP Support | In-system serial programming via XRES and SWD-compatible pins - permits field firmware updates without removing the device from the PCB. |
Applications
| Industrial HMI Panels | USB-Enabled Sensor Nodes |
|---|---|
Use Scenario: Touch-based operator interface on factory-floor HMIs with ESD-prone environments and wide temperature swings. IC Role / Device Role / Timing Role: Central PSoC controller handling capacitive touch scanning, LED status feedback, USB HID reporting, and RS-485 gateway logic. Use Value: Single-chip integration reduces BOM count and improves reliability; CSA hardware accelerates 100+ node scan rates at <10 ms latency. | Use Scenario: Battery-powered environmental sensor node transmitting temperature/humidity data over USB to host PC or gateway. IC Role / Device Role / Timing Role: Sensor aggregator with ADC-driven analog front-end, low-power sleep/wake scheduling, and USB CDC-class virtual COM port interface. Use Value: Internal 0.25% USB clock eliminates crystal, saving 2 mm² PCB area and reducing component count by one passive. |
| Embedded Motor Control | Capacitive Proximity Detection |
Use Scenario: Small-form-factor BLDC motor driver with hall-effect feedback, current sensing, and USB-based tuning interface. IC Role / Device Role / Timing Role: Real-time motor commutation controller using PWM from digital blocks, analog current monitoring via PGA+ADC, and USB parameter upload/download. Use Value: Dual MAC units enable simultaneous 8×8 multiply operations for FOC calculations while maintaining USB responsiveness. | Use Scenario: Appliance door-open detection using self-capacitance measurement through metal panel overlay. IC Role / Device Role / Timing Role: Dedicated CSA block configured for shielded proximity sensing with adaptive baseline tracking and noise rejection. Use Value: Hardware-based CSA delivers >60 dB noise immunity in 50/60 Hz EMI environments without firmware overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar programmable mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C24894-24LTXIT | Lacks XRES pin; no in-system serial programming (ISSP) capability; identical core, memory, and peripheral specs. | Suitable for production-only deployments where field firmware update is unnecessary. | Select when ISSP is not required and cost minimization is critical. |
| CY8C24794-24LTXIT | Same package and pinout; excludes USB functionality - no USB_DP/DM pins or USB controller logic. | Preferred for non-USB applications requiring same analog/digital resources and lower USB-related EMI susceptibility. | Choose when USB connectivity is omitted and reduced electromagnetic emissions are prioritized. |
Compared with CY8C24894-24LTXIT and CY8C24794-24LTXIT, the CY8C24994-24LTXIT uniquely combines ISSP support and full-speed USB in a single 100-pin TQFP, making it optimal for field-upgradable USB-HID devices requiring capacitive touch and analog sensing.
Availability
CY8C24994-24LTXIT is available at Aetrix Electronics and suitable for industrial HMI panels, USB sensor nodes, embedded motor control, and capacitive proximity detection requiring stable component supply and long-term manufacturing continuity.
Supply support for CY8C24994-24LTXIT 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 high-performance, programmable mixed-signal ICs for embedded control, sensing, and connectivity applications.
The CY8C24x94 product line targets cost-sensitive, USB-enabled human interface and industrial control systems requiring integrated analog front-ends, programmable logic, and field-upgradable firmware.
FAQ
Does CY8C24994-24LTXIT require an external crystal for USB operation?
No. The device uses its internal main oscillator (IMO) with 0.25% accuracy at 48 MHz to meet USB 2.0 full-speed timing requirements. External crystal connections (OSC_IN/OSC_OUT) are optional and only needed if tighter frequency tolerance is required for non-USB functions.
What is the maximum number of capacitive sensing channels supported?
The CY8C24994-24LTXIT supports up to 48 capacitive sensing channels using all GPIO pins. Hardware-accelerated CSA logic enables simultaneous scanning of multiple buttons/sliders with automatic baseline tracking and noise filtering, verified in AN64846 and CapSense design guides.
Can the analog blocks be used for precision voltage measurement?
Yes. Each analog block supports up to 14-bit SAR ADC with programmable gain amplifiers (PGAs) offering gains from 1× to 48×, enabling sub-millivolt resolution voltage measurements across a 0–VDD range when combined with internal 1.2 V reference or external reference inputs.
Is ISSP supported on CY8C24994-24LTXIT, and what pins are required?
Yes. In-system serial programming (ISSP) is supported via the XRES pin and dedicated SWD-compatible pins (P1[0]–P1[3]). Programming requires the MiniProg3 (CY8CKIT-002) or compatible programmer; no external debug header is needed, and firmware can be updated without device removal.
CY8C24994-24LTXIT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 68-VFQFN Exposed Pad
- Series:
- PSOC™1 CY8C24xxx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- M8C
- Core Size:
- 8-Bit
- Speed:
- 24MHz
- Connectivity:
- I2C, SPI, UART/USART, USB
- Peripherals:
- POR, PWM, WDT
- Number of I/O:
- 56
- Program Memory Size:
- 16KB (16K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 5.25V
- Data Converters:
- A/D 48x14b; D/A 2x9b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C24994-24LTXIT FAQ
1.How can I place an order for CY8C24994-24LTXIT through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C24994-24LTXIT 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 CY8C24994-24LTXIT reliable?
The price and inventory of CY8C24994-24LTXIT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C24994-24LTXIT is usually 5 days.
3.What payment methods are accepted for CY8C24994-24LTXIT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C24994-24LTXIT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C24994-24LTXIT?
CY8C24994-24LTXIT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C24994-24LTXIT 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 CY8C24994-24LTXIT?
For technical support, including CY8C24994-24LTXIT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C24994-24LTXIT requirements.
6.How does Aetrix verify that CY8C24994-24LTXIT is sourced from the original manufacturer or authorized distributors?
All CY8C24994-24LTXIT 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 CY8C24994-24LTXIT meets industry standards.
7.What is the process for return or replacement of CY8C24994-24LTXIT?
All CY8C24994-24LTXIT units undergo pre-shipment inspection (PSI). If there is an issue with CY8C24994-24LTXIT, 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 CY8C24994-24LTXIT part is unused and in its original packaging.
Return procedure for CY8C24994-24LTXIT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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