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Infineon Technologies CY8C24994-24LTXI
- Part No.:
- CY8C24994-24LTXI
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 68-VFQFN Exposed Pad
- Datasheet:
-
CY8C24994-24LTXI.pdf
- Description:
- IC MCU 8BIT 16KB FLASH 68QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,305
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Product details
Overview
CY8C24994-24LTXI from Cypress Semiconductor is a programmable System-on-Chip (PSoC) integrating an M8C 8-bit Harvard-architecture CPU, six analog PSoC blocks (supporting up to 14-bit ADCs and 9-bit DACs), four digital PSoC blocks (including UART, SPI, and PWM), full-speed USB 2.0 (12 Mbps) with dedicated 256-byte buffer, and 16 KB flash/1 KB SRAM - deployed in industrial human-machine interface (HMI) and capacitive touch sensing systems.
For engineers reviewing the CY8C24994-24LTXI datasheet, CY8C24994-24LTXI pinout, CY8C24994-24LTXI application, or CY8C24994-24LTXI equivalent, key selection criteria include USB endpoint configuration (4 unidirectional + 1 bidirectional), ±4% internal main oscillator accuracy, 25-mA GPIO sink capability, 3 V–5.25 V operating voltage, and CSA-capable analog input routing across up to 48 GPIOs.
Technical Context
The CY8C24994-24LTXI implements a configurable mixed-signal architecture where analog and digital PSoC blocks interconnect via global analog/digital buses, enabling custom peripheral synthesis - e.g., combining analog blocks for high-resolution capacitive sensing front-ends and digital blocks for CRC-based data integrity in USB communication stacks.
Its clock system integrates a 24/48 MHz internal main oscillator (IMO) with 0.25% USB timing accuracy without external crystal, plus independent ILO for sleep/wake control; reset logic includes both XRES pin support for ISSP and internal POR/LVD circuitry with user-configurable thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | M8C 8-bit Harvard architecture, 24 MHz max operation - enables deterministic real-time firmware execution with dual 8×8 MAC units for sensor signal processing. |
| Flash / SRAM | 16 KB flash (50k erase/write cycles) + 1 KB SRAM - supports field-upgradable firmware and runtime variable storage for HMI state machines. |
| USB Interface | Full-speed USB 2.0 (12 Mbps), 4 unidirectional + 1 bidirectional endpoints, 256-byte dedicated buffer - eliminates need for external PHY or crystal in plug-and-play HID designs. |
| Analog Blocks | Six rail-to-rail analog PSoC blocks - provide configurable 14-bit SAR ADC, 9-bit DAC, PGA, and comparator per block for multi-channel touch or sensor conditioning. |
| Digital Blocks | Four digital PSoC blocks - deliver 8–32-bit timers, UART, SPI (master/slave), PRS, and CRC modules, all routable to any GPIO for flexible I/O mapping. |
| GPIO Capability | Up to 48 analog inputs, 2 × 33 mA analog outputs, 25 mA sink / 10 mA source per pin, with pull-up/pull-down/strong/open-drain modes - supports direct LED drive and capacitive sensor electrode routing. |
| Operating Range | 3.0 V–5.25 V supply, –40 °C to +85 °C industrial temperature - validated for embedded control in factory automation panels and medical device interfaces. |
Pinout & Package
Package: 100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply | 3.0–5.25 V core and I/O supply; decoupling required per analog/digital domain separation guidelines. |
| VSS | GND reference | Digital and analog ground planes must be joined at single point near VSS pins to minimize noise coupling. |
| XRES | External reset / ISSP programming | Active-low reset input; also used for in-system serial programming - requires external pull-up and debounced switch or microcontroller-driven control. |
| USB_DP / USB_DM | USB differential data pair | Full-speed USB physical layer interface; routed internally to dedicated USB block with no software stack dependency on GPIO configuration. |
| P0[0]–P7[7] | General-purpose I/O | All 64 GPIOs support analog input muxing, interrupt generation, and configurable drive strength - used for CapSense electrode connections and LED indicators. |
| XTAL_IN / XTAL_OUT | Optional crystal oscillator | Not required for USB operation; only needed if higher clock accuracy than IMO's ±4% is required for non-USB timing-critical functions. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable analog blocks | Each of six analog blocks can be independently set as ADC, DAC, PGA, or comparator - enabling simultaneous acquisition of 6+ touch buttons with noise rejection and gain adjustment per channel. |
| USB without external crystal | Internal IMO achieves 0.25% USB timing accuracy - removes BOM cost and layout area for 12-MHz crystal and load capacitors in space-constrained HMI modules. |
| Capacitive sensing (CSA) | Hardware-accelerated CSA engine with shield driver and IDAC current sources - delivers >100:1 signal-to-noise ratio for wet-finger or gloved operation in industrial environments. |
| ISSP programming support | XRES pin enables in-system serial programming without JTAG header - allows firmware updates in final assembly or field-deployed units using minimal two-wire interface. |
| Flexible GPIO drive modes | Per-pin selection of strong, open-drain, pull-up, pull-down, or high-Z - simplifies interface to diverse peripherals including LEDs, switches, and I²C bus segments. |
Applications
| Industrial HMI Panel | Medical Device Touch Interface |
|---|---|
Use Scenario: Operator-facing control panel in PLC cabinets with sealed membrane keypad and status LEDs. IC Role / Device Role / Timing Role: Central PSoC controller managing CapSense button scanning, LED feedback, USB HID reporting to host PC, and watchdog supervision. Use Value: Single-chip integration replaces MCU + touch controller + USB transceiver - reduces PCB layers and improves ESD immunity via on-die analog filtering. | Use Scenario: Touch-sensitive parameter adjustment interface on portable diagnostic equipment with glove-compatible operation. IC Role / Device Role / Timing Role: Capacitive sensing front-end with adaptive baseline tracking and USB CDC interface for configuration data transfer. Use Value: CSA hardware acceleration and LVD monitoring ensure reliable operation under battery voltage sag and electrostatic discharge events per IEC 60601-1. |
| Automotive Infotainment Demo | Smart Home Appliance Control |
Use Scenario: Non-safety-critical infotainment prototype board with rotary encoder emulation and backlight dimming. IC Role / Device Role / Timing Role: Digital block-generated PWM for LED dimming and analog block-based voltage measurement for thermal monitoring. Use Value: Reconfigurable digital blocks eliminate need for discrete timer ICs; analog inputs directly monitor thermistor voltage without external op-amp buffering. | Use Scenario: Microwave oven or washing machine control panel with water-resistant touch keys and buzzer feedback. IC Role / Device Role / Timing Role: Dual-role device: CapSense acquisition during standby, and UART-to-I²C bridge during active cycle for display module communication. Use Value: GPIO reconfiguration at runtime enables shared pins for sensing and communication - reducing connector count and mechanical complexity. |
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 |
|---|---|---|---|
| CY8C24894-24LTXI | Lacks XRES pin; no ISSP support; identical analog/digital block count and USB functionality. | Not suitable for field-programmable deployments requiring in-system firmware updates. | Select when production units are pre-programmed and reset is handled solely by internal POR/LVD. |
| CY8C24794-24LTXI | Same package and pinout; excludes USB block entirely; retains all analog/digital PSoC blocks and CSA capability. | Used where USB connectivity is unnecessary but high-channel-count capacitive sensing remains critical. | Select for cost-sensitive touch-only applications without host communication requirements. |
Compared with CY8C24894-24LTXI and CY8C24794-24LTXI, the CY8C24994-24LTXI uniquely combines XRES-enabled ISSP, full-speed USB, and full analog/digital resource complement - making it the only variant qualified for upgradable, USB-connected, multi-function HMI designs.
Availability
CY8C24994-24LTXI is available at Aetrix Electronics and suitable for industrial HMI panels, medical device touch interfaces, automotive infotainment demos, and smart home appliance controls requiring stable component supply and long-term manufacturability.
Supply support for CY8C24994-24LTXI 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, sensing, and connectivity - with focus on integration, configurability, and system-level simplification.
The CY8C24x94 product line targets cost-sensitive, low-power human interface applications requiring on-chip analog sensing, digital control, and USB connectivity - optimized for rapid prototyping and production deployment of touch-based systems.
FAQ
Does CY8C24994-24LTXI require an external crystal for USB operation?
No. The device uses an internal main oscillator (IMO) with 0.25% accuracy over temperature and voltage, fully compliant with USB 2.0 full-speed timing requirements. External crystals are optional and only needed for applications demanding tighter clock tolerance than ±4% for non-USB functions.
How many capacitive sensing channels can CY8C24994-24LTXI support simultaneously?
It supports up to 48 independent capacitive sensing channels using its six analog PSoC blocks and global analog interconnect. Each analog block provides dedicated IDACs, comparators, and routing for self- or mutual-capacitance measurement - validated for >100:1 SNR in noisy industrial environments.
What development tools are required to program and debug CY8C24994-24LTXI?
PSoC Designer IDE (free Windows-based tool) is required for hardware/firmware co-design. Programming uses MiniProg3 (CY8CKIT-002) via XRES pin for ISSP; on-chip debugging requires SWD-compatible debuggers such as KitProg2 or third-party J-Link with PSoC-specific firmware.
Is CY8C24994-24LTXI pin-compatible with other CY8C24x94 variants?
Yes - all CY8C24x94 devices in the 100-pin TQFP package share identical pinouts and footprint. Functional differences (e.g., USB presence, XRES pin) are implemented internally; unused pins remain electrically inactive but retain mechanical compatibility for BOM consolidation.
CY8C24994-24LTXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 68-VFQFN Exposed Pad
- Series:
- PSOC™1 CY8C24xxx
- Packaging:
- Tray
- 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:
CY8C24994-24LTXI FAQ
1.How can I place an order for CY8C24994-24LTXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C24994-24LTXI 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 CY8C24994-24LTXI reliable?
The price and inventory of CY8C24994-24LTXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C24994-24LTXI is usually 5 days.
3.What payment methods are accepted for CY8C24994-24LTXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C24994-24LTXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C24994-24LTXI?
CY8C24994-24LTXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C24994-24LTXI 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 CY8C24994-24LTXI?
For technical support, including CY8C24994-24LTXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C24994-24LTXI requirements.
6.How does Aetrix verify that CY8C24994-24LTXI is sourced from the original manufacturer or authorized distributors?
All CY8C24994-24LTXI 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 CY8C24994-24LTXI meets industry standards.
7.What is the process for return or replacement of CY8C24994-24LTXI?
All CY8C24994-24LTXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8C24994-24LTXI, 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 CY8C24994-24LTXI part is unused and in its original packaging.
Return procedure for CY8C24994-24LTXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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