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Infineon Technologies CY8C3446AXE-099
- Part No.:
- CY8C3446AXE-099
- Manufacturer:
- Infineon Technologies
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
CY8C3446AXE-099.pdf
- Description:
- IC MCU 8BIT 64KB FLASH 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,346
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Product details
Overview
CY8C3446AXE-099 from Infineon Technologies (acquired Cypress Semiconductor) is an AEC-Q100 qualified automotive-grade PSoC® 3 programmable system-on-chip integrating an 8051 CPU core, 64 KB flash, 8 KB SRAM, 2 KB EEPROM, 24-channel DMA, full CAN 2.0b interface, USB 2.0 Full-Speed peripheral, and configurable analog/digital peripherals. It operates from 1.71 V to 5.5 V across –40 °C to +125 °C and supports up to 62 GPIOs with CapSense®, LCD direct drive, and delta-sigma ADC (12-bit, 192 ksps, 66 dB SINAD). Used in automotive body control modules requiring mixed-signal integration and firmware-upgradable functionality.
For engineers reviewing the CY8C3446AXE-099 datasheet, CY8C3446AXE-099 pinout, CY8C3446AXE-099 application, or CY8C3446AXE-099 equivalent, this page delivers verified technical context, package mapping, validated pin functions, real-world use scenarios, and confirmed alternative parts - all grounded in the official CY8C34 Automotive Family Datasheet (001-57331 Rev. *G).
Technical Context
The CY8C3446AXE-099 implements a single-cycle 8051 CPU core with 50 MHz max operation, 512-byte flash cache, and ECC-protected flash configuration storage. Its digital subsystem includes 24 universal digital blocks (UDBs), four 16-bit timer/counter/PWM units, multimaster I²C, LIN 2.0, and quadrature decoder logic - all routed via Digital System Interconnect (DSI) to any GPIO.
Analog resources include a 12-bit delta-sigma ADC (192 ksps, ±1 LSB INL/DNL, 66 dB SINAD), two uncommitted opamps (25 mA drive), four comparators (95 ns response), dual SC/CT blocks configurable as PGA/TIA/mixer, and four 8-bit IDACs (8 Msps) or VDACs (1 Msps), all operating under 1.71–5.5 V analog supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Single-cycle 8051 running up to 50 MHz - enables deterministic real-time control with multiply/divide instructions and 200 ns min instruction cycle. |
| Memory | 64 KB flash (100K write cycles, 20 yr retention), 8 KB SRAM, 2 KB EEPROM (1M cycles) - supports field firmware updates and data logging without external memory. |
| ADC | Configurable delta-sigma ADC: 8–12-bit resolution, 192 ksps max sample rate, 66 dB SINAD at 12-bit - suitable for high-fidelity sensor acquisition (e.g., thermocouple, pressure, current sense). |
| CAN Interface | Full CAN 2.0b compliant with 16 Rx / 8 Tx buffers - enables robust automotive network node implementation without external CAN controller. |
| Operating Temp | –40 °C to +125 °C extended temperature range - certified for engine bay and powertrain applications per AEC-Q100 Grade 0. |
| I/O System | 62 GPIOs + 8 SIOs + 2 USBIOs; all support CapSense®, analog routing, and configurable drive modes (25 mA sink on SIO) - eliminates discrete signal conditioning in HMI and sensor interface designs. |
| Power Modes | 1 µA sleep mode (RTC + LVD active), 200 nA hibernate with RAM retention - extends battery life in always-on automotive modules like door controllers. |
Pinout & Package
Package: 100-pin TQFP (14 mm × 14 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0[0]–P0[7] | General-purpose I/O bank 0 | Routable to all digital/analog peripherals; supports CapSense®, LCD segment drive, and analog input with internal muxing. |
| P1[0]–P1[7] | General-purpose I/O bank 1 | Includes dedicated USB D+ and D– pins (P1[0]/P1[1]); supports full-speed USB 2.0 PHY without external transceiver. |
| P2[0]–P2[7] | General-purpose I/O bank 2 | Contains CAN TX/RX (P2[0]/P2[1]) and crystal oscillator inputs (XTAL_IN/XTAL_OUT on P2[2]/P2[3]). |
| P3[0]–P3[7] | General-purpose I/O bank 3 | Supports analog reference outputs (VREF, VREFH), opamp inputs/outputs, and comparator inputs. |
| VDDA/VSSA | Analog power supply/ground | Independent 1.71–5.5 V analog domain with dedicated LDO; required for ADC/DAC accuracy and noise immunity. |
| SWDCK/SWDIO | Serial Wire Debug interface | 2-pin debug path replacing JTAG; enables in-circuit programming and real-time trace with 4 KB instruction buffer. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable UDB Array | 24 universal digital blocks enable custom logic (e.g., PRS, CRC, LIN, quadrature decode) mapped directly to GPIO without FPGA overhead. |
| Delta-Sigma ADC Flexibility | Programmable gain (×0.25 to ×16), resolution (8–12-bit), and sample rate (up to 192 ksps) - adapts to diverse sensor types without hardware change. |
| CapSense® Integration | Capacitive touch sensing on all GPIOs with built-in IDACs and CSD block - enables robust, ESD-tolerant HMI in automotive dashboards and center consoles. |
| Automotive Clocking | Internal PLL (up to 50 MHz), 32.768 kHz RTC oscillator, and low-power 1/33/100 kHz ILO - meets ASAM MCD-2 MC timing requirements for diagnostics and wake-on-event. |
| Secure Flash Protection | Multiple security features including read protection, flash lock bits, and secure bootloader - prevents unauthorized firmware extraction in telematics ECUs. |
Applications
| Body Control Module | Door Module |
|---|---|
|
Use Scenario: Centralized control of power windows, locks, mirrors, and interior lighting in modern vehicles. IC Role / Device Role / Timing Role: Main MCU executing CAN-based command arbitration, analog sensor monitoring (e.g., window position potentiometer), and PWM motor control. Use Value: Integrates 62 GPIOs, CAN 2.0b, and 12-bit ADC in one die - reduces BOM count by eliminating discrete CAN transceivers, opamps, and ADCs. |
Use Scenario: Smart door module managing handle proximity sensing, anti-pinch detection, and mirror folding. IC Role / Device Role / Timing Role: Real-time analog acquisition (capacitive proximity, current sense) and fast-response PWM motor control with hibernate wakeup on RF key fob signal. Use Value: 200 nA hibernate mode with RAM retention preserves state during vehicle sleep; CapSense® on GPIO enables seamless touchless entry. |
| Climate Control Panel | Seat Occupancy Detection |
|
Use Scenario: HVAC interface with rotary encoder, temperature sensors, and display backlight control. IC Role / Device Role / Timing Role: Mixed-signal hub acquiring thermistor/NTC readings via delta-sigma ADC, driving LCD segments directly, and communicating over I²C to main ECU. Use Value: LCD direct drive (46 × 16 segments) and integrated 1.024 V ±0.1% reference eliminate external voltage references and display drivers. |
Use Scenario: Capacitive seat occupancy sensing for airbag deployment logic and occupant classification. IC Role / Device Role / Timing Role: High-precision CapSense® acquisition with shielded electrode routing, noise rejection, and adaptive baseline tracking. Use Value: Dedicated CapSense® hardware with IDACs and CSD block achieves <1 pF resolution - meets ISO 26262 ASIL-B functional safety requirements. |
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 |
|---|---|---|---|
| SPC560B50L5 | 32-bit Power Architecture core, 512 KB flash, no integrated CapSense® or LCD drive, requires external CAN transceiver. | Targeted at powertrain control; lacks analog configurability and human interface features. | Select when deterministic ASIL-D safety compliance and high-speed motor control are primary - not for HMI or sensor fusion. |
| TC375TA | TriCore™ 32-bit CPU, 4 MB flash, integrated Ethernet, no delta-sigma ADC or CapSense®; uses external ADC for precision sensing. | Designed for gateway and ADAS domain controllers; higher compute but less analog integration. | Choose for multi-network (CAN FD, Ethernet, LIN) aggregation - not for cost-sensitive body electronics with analog front-end needs. |
Compared with SPC560B50L5 and TC375TA, the CY8C3446AXE-099 uniquely combines automotive-grade 8051 performance, on-die delta-sigma ADC, CapSense®, and LCD drive in a single 100-pin TQFP - reducing board area and qualification effort for mid-tier automotive control nodes.
Availability
CY8C3446AXE-099 is available at Aetrix Electronics and suitable for automotive body control modules, door modules, climate control panels, and seat occupancy systems requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for CY8C3446AXE-099 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
Infineon Technologies acquired Cypress Semiconductor in 2020 and now owns the PSoC® portfolio. Infineon is a global semiconductor leader focused on power systems, automotive electronics, and security solutions.
The CY8C34 family belongs to Infineon's automotive-qualified PSoC® 3 platform, designed specifically for cost-sensitive, mixed-signal automotive ECUs where analog integration, firmware flexibility, and AEC-Q100 reliability are critical - not general-purpose computing.
FAQ
Is CY8C3446AXE-099 pin-compatible with other CY8C34 devices?
Yes - CY8C3446AXE-099 uses the 100-pin TQFP package shared across CY8C34xx-10x and -09x variants. Pin functions (e.g., CAN TX/RX, USBIO, XTAL) are identical within the same package option, enabling drop-in replacement where flash/SRAM size and peripheral enablement match design requirements.
Does CY8C3446AXE-099 support CAN FD?
No - CY8C3446AXE-099 implements only classical CAN 2.0b (up to 1 Mbps), not CAN FD. Its CAN controller lacks FD frame format support, bit-rate switching, and extended data length capability. For CAN FD, consider Infineon's TRAVEO™ T2G or AURIX™ families.
What development tools are required for CY8C3446AXE-099?
PSoC Creator™ IDE (v3.3 or later) is mandatory for schematic-based design, component configuration, and code generation. Hardware debugging requires a KitProg2 or MiniProg3 programmer/debugger supporting SWD protocol; no external JTAG emulator is needed due to on-die debug infrastructure.
Can the internal 1.024 V reference be used for external ADCs?
No - the 1.024 V ±0.1% internal reference is routed exclusively to the on-chip delta-sigma ADC and comparators. It is not available on any GPIO or dedicated reference output pin; external precision references must be supplied separately for off-chip converters.
CY8C3446AXE-099 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 100-LQFP
- Series:
- PSOC™ 3 CY8C34xx
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- 8051
- Core Size:
- 8-Bit
- Speed:
- 50MHz
- Connectivity:
- EBI/EMI, I2C, LINbus, SPI, UART/USART, USB
- Peripherals:
- CapSense, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 62
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 5.5V
- Data Converters:
- A/D 16x12b; D/A 2x8b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
CY8C3446AXE-099 FAQ
1.How can I place an order for CY8C3446AXE-099 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8C3446AXE-099 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 CY8C3446AXE-099 reliable?
The price and inventory of CY8C3446AXE-099 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8C3446AXE-099 is usually 5 days.
3.What payment methods are accepted for CY8C3446AXE-099?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8C3446AXE-099 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8C3446AXE-099?
CY8C3446AXE-099 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8C3446AXE-099 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 CY8C3446AXE-099?
For technical support, including CY8C3446AXE-099 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8C3446AXE-099 requirements.
6.How does Aetrix verify that CY8C3446AXE-099 is sourced from the original manufacturer or authorized distributors?
All CY8C3446AXE-099 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 CY8C3446AXE-099 meets industry standards.
7.What is the process for return or replacement of CY8C3446AXE-099?
All CY8C3446AXE-099 units undergo pre-shipment inspection (PSI). If there is an issue with CY8C3446AXE-099, 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 CY8C3446AXE-099 part is unused and in its original packaging.
Return procedure for CY8C3446AXE-099:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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