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STMicroelectronics STM32F446ZCH6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32F446ZCH6 STM32F4 MCU, 180 MHz, 256KB Flash, 144-UFBGA

MPNSTM32F446ZCH6
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STMicroelectronics STM32F4 series STM32F446ZCH6, ARM Cortex-M4 32-Bit Single-Core MCU, 180MHz, 256KB Flash, 128K x 8 RAM, 114 I/O, 144-UFBGA, -40°C to 85°C.

$9.7700Ref. price · indicative, final on quote
STMicroelectronics STM32F446ZCH6 datasheet (PDF)
Packaging144-UFBGA
RoHSROHS3 Compliant
SeriesSTM32F4
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32F446ZCH6 specifications
ParameterValue
SeriesSTM32F4
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.7V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed180MHz
PackageTray
RAM size128K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, I²S, LVD, POR, PWM, WDT
ConnectivityCANbus, EBI/EMI, I²C, IrDA, LINbus, SAI, SD, SPDIF-Rx, SPI, UART/USART, USB, USB OTG
Number of i (O)114
Core processorARM® Cortex®-M4
Case144-UFBGA
Data convertersA/D 24x12b; D/A 2x12b
Program memory size256KB (256K x 8)

Product details

The 180 MHz core speed puts this part in the performance tier for real-time control, audio processing, and moderate DSP workloads. With the single-cycle multiply and hardware FPU of the Cortex-M4, it can handle FFTs and filter loops without an external DSP. The 128 KB SRAM provides enough working memory for double-buffered data streams or a modest RTOS heap.

Memory and peripheral integration

256 KB of Flash is sized for mid-complexity firmware — enough for a USB stack, a CANopen node, or a motor-control algorithm with room for field-upgrade staging. The 24-channel 12-bit ADC covers multi-sensor acquisition without an external mux; the two 12-bit DAC channels can generate analog setpoints or audio waveforms. Connectivity includes CANbus for industrial networks, USB OTG for host/device flexibility, and SAI for I²S audio codec interfaces.

The package is surface-mount only. The small ball pitch means the PCB layout should follow ST's recommended footprint and fanout via pattern.

It is ROHS3 compliant.

Frequently asked questions

Does STM32F446ZCH6 have a built-in ADC?

Yes, it integrates a 24-channel 12-bit ADC and a 2-channel 12-bit DAC on-chip.

What is the closest functional second-source for STM32F446ZCH6?

The STM32L151CBU6A is a lower-power ARM Cortex-M3 alternative from the STM32L1 series, but it runs at 32 MHz with 37 I/O and lacks the 180 MHz performance, 114 I/O, and USB OTG of the STM32F446ZCH6. It is not a pin-compatible or performance-equivalent replacement — it suits a different power-vs-performance trade-off.