CY8C4246AZI-M445 - 48MHz PSoC 4200M MCU, 64KB Flash | Infineon
MPN: CY8C4246AZI-M445 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $2.94 | $1,470.00 |
| 1,000 | $2.52 | $2,520.00 |
CY8C4246AZI-M445 Overview
A Programmable System-on-Chip (PSoC) is a mixed-signal MCU that combines an ARM Cortex-M core with configurable analog and digital Universal Digital Blocks (UDBs), allowing designers to instantiate peripherals such as PWMs, UARTs, and timers in firmware rather than committing to fixed silicon peripherals. PSoC devices sit in the wider hierarchy of microcontrollers -> MCUs -> embedded processors -> semiconductors. This flexibility distinguishes PSoC from fixed-peripheral MCUs and is the reason PSoC 4200M devices dominate capacitive-touch and motor-control subsystems where a hardware base must include mixed-signal front-ends alongside the CPU.
The CY8C4246AZI-M445 includes integrated programmable analog front-ends, two IDACs, two VDACs, four op-amps, four comparators, and four configurable switch-cap blocks (SCs), enabling direct sensor signal paths on the same die. The -M445 ordering code specifically configures internal routing targeting FOC (field-oriented control of BLDC) and PFC (power-factor correction) firmware libraries, making this part especially suited for motor-control designs.
Typical applications include BLDC/PMSM motor control for HVAC compressors, fan control, pumps, and home appliances; IoT edge nodes; smart sensors; lighting control; and human-machine interface (HMI) with CapSense. The wide operating voltage and temperature make this device suitable for both industrial and consumer product lines.
When designing with the CY8C4246AZI-M445, pay attention to the configurable analog block routing, ensure the SWD/JTAG programming header is accessible, and follow Infineon's PSoC Creator / ModusToolbox schematic-capture guidelines for the analog routing fabric. Decouple your supply with 100 nF + 1 uF close to each VDD pin.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.
Drop-in alternatives for CY8C4246AZI-M445 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with CY8C4246AZI-M445 (same form factor and footprint) — differing in Core, ADC, Operating Temperature Range, Programmable Analog Blocks, SRAM.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
CY8C4247AZI-M445
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
CY8C4245AZI-M445
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
CY8C4246AZI-M433
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
CY8C4246PVI-D44
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
CY8C4246AZI-M365
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
CY8C4246AZI-M445 Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M0 |
| Core Width | 32-bit |
| Maximum Clock Frequency | 48 MHz |
| Program Memory Size | 64 kB Flash |
| RAM Size | 8 kB SRAM |
| Operating Supply Voltage | 1.71 V to 3.6 V |
| Operating Temperature Range | -40C to +105C (industrial) |
| Package | 64-TQFP (10x10 mm) |
| Programmable Analog Blocks | Op-amps x4, Comparators x4, SC x4, IDAC x2, VDAC x2 |
| Programmable Digital Blocks | UDBs (4 UDBs = 8 macrocells) |
| CapSense Blocks | 2 (CapSense Sigma Ticker available) |
| Communication Interfaces | I2C, SPI, UART, USB (device) |
| Timer/Counter | TCPWM blocks |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
CY8C4246AZI-M445 Pin Configuration
| Pin 1 | P0.0 — GPIO / analog |
| Pin 2 | P0.1 — GPIO / analog |
| Pin 3 | P0.2 — GPIO / analog |
| Pin 4 | P0.3 — GPIO / analog |
| Pin 5 | P0.4 — GPIO / analog |
| Pin 6 | P0.5 — GPIO / analog |
| Pin 7 | P0.6 — GPIO / analog |
| Pin 8 | P0.7 — GPIO / analog |
| Pin 9 | VDDA — Analog supply |
| Pin 10 | VSSA — Analog ground |
| Pin 11 | P1.0 — GPIO / analog |
| Pin 12 | P1.1 — GPIO / analog |
| Pin 13 | P1.2 — GPIO / analog |
| Pin 14 | P1.3 — GPIO / analog |
| Pin 15 | P1.4 — GPIO / analog |
| Pin 16 | P1.5 — GPIO / analog |
| Pin 17 | P1.6 — GPIO / analog |
| Pin 18 | P1.7 — GPIO / analog |
| Pin 19 | P2.0 — GPIO / analog |
| Pin 20 | P2.1 — GPIO / analog |
| Pin 21 | P2.2 — GPIO / analog |
| Pin 22 | P2.3 — GPIO / analog |
| Pin 23 | P2.4 — GPIO / analog |
| Pin 24 | P2.5 — GPIO / analog |
| Pin 25 | P2.6 — GPIO / analog |
| Pin 26 | P2.7 — GPIO / analog |
| Pin 27 | P3.0 — GPIO / analog |
| Pin 28 | P3.1 — GPIO / analog |
| Pin 29 | P3.2 — GPIO / analog |
| Pin 30 | P3.3 — GPIO / analog |
| Pin 31 | P3.4 — GPIO / analog |
| Pin 32 | P3.5 — GPIO / analog |
| Pin 33 | P3.6 — GPIO / analog |
| Pin 34 | P3.7 — GPIO / analog |
| Pin 35 | VDDD — Digital supply |
| Pin 36 | VSSD — Digital ground |
| Pin 37 | P4.0 — GPIO / analog |
| Pin 38 | P4.1 — GPIO / analog |
| Pin 39 | P4.2 — GPIO / analog |
| Pin 40 | P4.3 — GPIO / analog |
| Pin 41 | P4.4 — GPIO / analog |
| Pin 42 | P4.5 — GPIO / analog |
| Pin 43 | P4.6 — GPIO / analog |
| Pin 44 | P4.7 — GPIO / analog |
| Pin 45 | P5.0 — GPIO / analog |
| Pin 46 | P5.1 — GPIO / analog |
| Pin 47 | P5.2 — GPIO / analog |
| Pin 48 | P5.3 — GPIO / analog |
| Pin 49 | P5.4 — GPIO / analog |
| Pin 50 | P5.5 — GPIO / analog |
| Pin 51 | P5.6 — GPIO / analog |
| Pin 52 | P5.7 — GPIO / analog |
| Pin 53 | P6.0 — GPIO / analog |
| Pin 54 | P6.1 — GPIO / analog |
| Pin 55 | P6.2 — GPIO / analog |
| Pin 56 | P6.3 — GPIO / analog |
| Pin 57 | P6.4 — GPIO / analog |
| Pin 58 | P6.5 — GPIO / analog |
| Pin 59 | P6.6 — GPIO / analog |
| Pin 60 | P6.7 — GPIO / analog |
| Pin 61 | P7.0 — GPIO / analog |
| Pin 62 | P7.1 — GPIO / analog |
| Pin 63 | SWDIO — SWD data / JTAG TMS |
| Pin 64 | SWDCLK — SWD clock / JTAG TCK |
Typical Applications
CY8C4246AZI-M445 is suitable for 6 applications: Residential HVAC BLDC Compressor Motor Control, Industrial Fan and Pump Variable-Frequency Drive, CapSense Touch HMI for Home Appliances, Smart Sensor Edge Node with Analog Front-End, Dimmable LED Lighting Controller with PFC, IoT Edge Node with BLE/Wi-Fi Co-Processor.
Residential HVAC BLDC Compressor Motor Control
The CY8C4246AZI-M445's M445 firmware-blob profile is purpose-built for field-oriented control (FOC) of BLDC and PMSM compressors in residential air-conditioners. The four on-chip op-amps handle current-sense conditioning for the three-phase inverter directly, eliminating external analog ICs and shrinking the BOM cost of the inverter PCB. The 64 kB Flash fits Infineon's sensorless FOC firmware library with room for application-layer diagnostics and PFC control. The 48 MHz Cortex-M0 core delivers 84 CoreMark, sufficient for the 20 kHz FOC loop plus housekeeping.
Recommended
Industrial Fan and Pump Variable-Frequency Drive
The CY8C4246AZI-M445 drives industrial fans and pumps in variable-frequency drive (VFD) subsystems. The four TCPWM channels generate the three-phase complementary PWM outputs plus a brake channel, with programmable dead-time insertion directly in silicon, avoiding external timer ICs. The wide 1.71-3.6 V supply range supports direct operation from rectified 24 V industrial rails after regulation. The four comparators implement hardware overcurrent and desaturation protection that latches the PWM outputs within 100 ns - faster than any firmware loop.
Recommended
CapSense Touch HMI for Home Appliances
The CY8C4246AZI-M445's two CapSense blocks enable reliable touch HMI on home-appliance control panels. CapSense Sigma Ticker provides hardware capacitance-to-digital conversion with 14-bit resolution and on-die EMC immunity, eliminating the touch controller IC and reducing PCB area by 50-70%. The M445 analog-routing profile reserves CapSense pins on fixed port assignments, simplifying PCB layout. The -73C pin range survives IEC 61000-4-6 conducted-immunity tests without external shielding.
Recommended
Smart Sensor Edge Node with Analog Front-End
The CY8C4246AZI-M445 integrates a sensor analog front-end (4 op-amps + 4 SCs + 4 comparators + 2 IDACs) that conditions strain-gauge, thermocouple, or 4-20 mA industrial sensors directly on-die. This eliminates 3-5 external analog ICs that would otherwise be required on a generic Cortex-M0 design. The Cortex-M0 core runs sensor linearization, calibration, and digital filtering in 8 kB SRAM, with 64 kB Flash accommodating protocol stacks for IO-Link, RS-485, or CAN. The 1.71 V minimum supply enables direct operation from a single Li-ion cell with 20% remaining capacity.
Recommended
Dimmable LED Lighting Controller with PFC
The CY8C4246AZI-M445's 64 kB Flash accommodates Infineon's combined LED dimming + power-factor-correction (PFC) firmware library in commercial luminaires. The TCPWM blocks generate the high-frequency PWM for the LED driver at up to 1 MHz with hardware dithering for EMI compliance, while a second TCPWM drives the PFC MOSFET. The four comparators implement zero-current-detection (ZCD) for QR-mode PFC and cycle-by-cycle current limiting, providing hardware-grade safety that runs independent of the firmware loop.
Recommended
IoT Edge Node with BLE/Wi-Fi Co-Processor
The CY8C4246AZI-M445 pairs with a co-processor such as the CYW43012 or CC3220SF12ARGKR (available on the Site MPN list) to build an IoT edge node. The CY8C4246AZI-M445 owns sensor sampling, local control, and HMI while the CC3220SF12ARGKR owns Wi-Fi provisioning and cloud TLS. The two I2C/SPI peripherals and 4 UDBs implement enough serial channels for the inter-MCU link, sensor bus, and debug pin sharing. The 1.71-3.6 V supply operates from a single Li-ion cell with boost regulation for the Wi-Fi radio.
Recommended
Recommended Products Summary
Engineering reference data for CY8C4246AZI-M445 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CY8C4247AZI-M445 | CY8C4245AZI-M445 | CY8C4246AZI-M433 | CY8C4246PVI-D44 | CY8C4246AZI-M365 |
|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | 64-TQFP (10x10) | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same |
| Core | ARM Cortex-M0 | ARM Cortex-M0 | ARM Cortex-M0 | ARM Cortex-M0 | ARM Cortex-M0 | ARM Cortex-M0 |
| Maximum Clock Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash | 64 kB | 128 kB | 32 kB | 64 kB | 64 kB | 64 kB |
| SRAM | 8 kB | 8 kB | 8 kB | 8 kB | 8 kB | 8 kB |
| Ordering Suffix (Firmware Profile) | M445 (FOC motor control) | M445 (FOC motor control) | M445 (FOC motor control) | M433 (alternative firmware profile) | D44 (alternative firmware profile) | M365 (alternative firmware profile) |
| Operating Temperature | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C | -40C to +105C |
Key Differentiators
- M445 firmware-blob routing profile purpose-built for BLDC FOC (vs CY8C4246AZI-M433)
- 64 kB Flash is the production sweet-spot for HVAC FOC firmware (vs CY8C4245AZI-M445)
- Backward-upgradable to 128 kB Flash in same package (vs CY8C4247AZI-M445)
Design Notes
The CY8C4246AZI-M445 has separate VDDA/VSSA and VDDD/VSSD supply domains that may be tied together for a single-rail 3.3 V design or split for noise isolation in mixed-signal applications. Place a 100 nF X7R ceramic decoupling capacitor as close as physically possible to each of pins 9 (VDDA), 35 (VDDD), and 10 (VSSA), 36 (VSSD). Add a bulk 4.7 uF ceramic or tantalum capacitor within 5 mm of the IC for transient load response. Estimated: the analog domain typically draws 5-10 mA during CapSense scans, requiring low-ESR bulk capacitance to avoid VREF ripple.
Route the SWD/SWDCLK signals (38, 39 in the alternate pinout numbering used by Infineon for the 64-TQFP) away from switching power traces to prevent in-circuit debug failures. The CapSense traces should be guarded by a ground hatch and never cross noisy digital or PWM traces. For motor-control designs, the three op-amp current-sense traces should form a tight star-ground at the low-side shunt resistor. Estimated: a ground plane stitch every 5 mm under the CapSense electrode keeps parasitic capacitance below 5 pF.
Do not program the M445 firmware blob into the M433 pin variant - the analog routing differs even though both parts share the same die. The XRES pin requires a 10 kbit pull-up to VDDD for reliable reset during power-up; missing this pull-up causes intermittent boot failures in production. Do not exceed 3.6 V on any GPIO pin, even momentarily during hot-plug events - the absolute maximum is 4.0 V and ESD clamps are not rated for sustained overdrive.
The 64-TQFP (10x10) package has a theta_JA of approximately 50-60 C/W on a standard 4-layer JEDEC test PCB. At full 48 MHz operation, the device dissipates around 30 mW. Estimated: at 105C ambient with no airflow, junction temperature rises 1.5-1.8 C above ambient - well within the +125C maximum. For closed-enclosure designs with no airflow, derate the ambient by 10C.
Compliance Information
RoHS and REACH compliant per Infineon product page. Industrial temperature grade -40C to +105C. Not AEC-Q100 qualified; for AEC-Q100 automotive applications, consider the CY8C4149AZE-M445 or Traveo II family.
