STMicroelectronics STM32F777IIK6

Overview

STM32F777IIK6 from STMicroelectronics is a high-performance Arm® Cortex®-M7 32-bit microcontroller with FPU, delivering 462 DMIPS at 216 MHz, 2 MB dual-bank flash, 512 KB SRAM (including 128 KB data TCM), hardware JPEG codec, and MIPI DSI host controller supporting 720p@30 Hz. It integrates LCD-TFT controller, Chrom-ART Accelerator, cryptographic accelerators (AES-128/192/256, SHA-1/2, HMAC), and triple CAN 2.0B interfaces for industrial HMI and multimedia edge nodes.

For engineers reviewing the STM32F777IIK6 datasheet, STM32F777IIK6 pinout, STM32F777IIK6 application, or STM32F777IIK6 equivalent, key selection criteria include its 216 MHz Cortex-M7 core with L1 cache, dual-bank flash enabling read-while-write, 168 I/Os with 5 V tolerance, integrated DSI/LCD-TFT graphics subsystem, and hardware crypto acceleration for secure boot and firmware updates.

Technical Context

The STM32F777IIK6 implements a tightly coupled memory architecture with 16 KB I/D cache, ART Accelerator, and separate instruction/data TCM RAM to sustain deterministic real-time execution. Its AXI-AHB bus matrix enables concurrent access to flash, SRAM, and peripherals without contention.

It features three independent clock domains: system (up to 216 MHz), audio (PLLI2S/PLLSAI), and low-power (LPTIM1), plus dedicated hardware blocks including DMA2D for 2D graphics composition, DFSDM for sigma-delta sensor interfacing, and IEEE 1588v2-compliant Ethernet MAC with MII/RMII support.

Key Specifications

Pinout & Package

STM32F777IIK6 is housed in a 216-ball TFBGA package (13 × 13 mm, 0.8 mm pitch), compliant with ECOPACK2 environmental standards. The package supports 166 5 V-tolerant I/Os and provides dedicated power/ground ball arrays for noise-sensitive analog and high-speed digital domains.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance MCU applications.

Compared with STM32H743VIT6, the STM32F777IIK6 trades peak CPU performance for integrated graphics and media acceleration; compared with STM32F767ZIT6, it adds display connectivity and JPEG processing at higher pin count and cost - making it optimal for display-rich industrial edge devices where BOM consolidation matters.

Availability

STM32F777IIK6 is available at Aetrix Electronics and suitable for industrial HMI, medical imaging consoles, secure edge gateways, and high-performance motor drives requiring stable component supply across long-lifecycle programs.

Supply support for STM32F777IIK6 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade silicon.

The STM32F7 series targets high-end embedded applications demanding real-time performance, rich graphics, and hardware security - specifically engineered for industrial HMIs, medical devices, and IoT edge nodes with display and connectivity requirements.

FAQ

What is the maximum operating frequency and how is it achieved?

The STM32F777IIK6 achieves 216 MHz maximum CPU frequency using an internal PLL driven by either the 4–26 MHz crystal oscillator or the 16 MHz internal RC oscillator. This requires proper configuration of the voltage regulator, VCAP capacitor placement (10 µF per VCAP pin), and enabling the ART Accelerator with L1 cache to sustain zero-wait-state execution from flash memory.

Does STM32F777IIK6 support hardware JPEG encoding or only decoding?

The STM32F777IIK6 integrates a hardware JPEG codec capable of both encoding and decoding JPEG images. It supports baseline sequential DCT mode with programmable quality factor, chroma subsampling (4:2:2, 4:2:0), and Huffman table customization - verified in ST's UM1905 reference manual and HAL JPEG driver implementation.

How many I/O pins are 5 V tolerant and which packages support them?

STM32F777IIK6 supports up to 166 5 V-tolerant I/Os across all packages, including the TFBGA216 (IIK6). This tolerance applies to all GPIOs except those assigned to JTAG/SWD debug, USB, or analog functions - confirmed in Section 6.3.20 of DS11243 Rev 8.

What debug interfaces are supported and what trace capability exists?

The device supports SWD and JTAG interfaces via dedicated pins, plus full Cortex-M7 Trace Macrocell™ (ETM) with 4-pin trace port for instruction and data trace. ETM enables cycle-accurate profiling and real-time code coverage analysis in tools like ST-Link v3 and Keil µVision, as documented in Section 3.47 of the datasheet.