STMicroelectronics STM32F101ZGT6

Overview

STM32F101ZGT6 from STMicroelectronics is an ARM® Cortex®-M3 based 32-bit microcontroller in LQFP144 package, delivering 36 MHz CPU frequency, 1 MB Flash (dual-bank), 80 KB SRAM, and integrated peripherals including 1×12-bit ADC (16-channel), 2×12-bit DAC, 15 timers, and 10 communication interfaces (3×SPI, 2×I²C, 5×USART). It serves as a main application controller in industrial HMI panels with LCD parallel interface support.

For engineers reviewing the STM32F101ZGT6 datasheet, STM32F101ZGT6 pinout, STM32F101ZGT6 application, or STM32F101ZGT6 equivalent, key selection criteria include Flash size (1 MB), 112 I/O count, dual-bank read-while-write capability, RTC with VBAT backup, and FSMC support for NOR/PSRAM expansion - critical for deterministic real-time control and display subsystem integration.

Technical Context

The STM32F101ZGT6 implements a tightly coupled ARM Cortex-M3 core with Memory Protection Unit (MPU), enabling secure task isolation in multi-threaded firmware. Its clock system integrates four oscillators: 4–16 MHz HSE, 8 MHz factory-trimmed HSI, 40 kHz calibrated LSI, and 32.768 kHz LSE for RTC - supporting precise timekeeping and low-power wake-up.

Peripheral architecture centers on a flexible static memory controller (FSMC) with four chip selects, directly interfacing CompactFlash, NOR, NAND, PSRAM, and SRAM. The LCD parallel interface operates in 8080/6800 modes, enabling direct connection to segment-based or TFT displays without external controllers.

Key Specifications

Pinout & Package

LQFP144 package (20 × 20 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32F101ZGT6, STM32F103ZET6 trades FSMC/LCD capability for integrated USB PHY, while STM32F405RGT6 offers computational headroom at the cost of I/O density and memory interface flexibility - making the ZGT6 uniquely suited for cost-sensitive, memory- and display-rich embedded control.

Availability

STM32F101ZGT6 is available at Aetrix Electronics and suitable for industrial HMI panels, PLC I/O modules, energy meter concentrators, and medical infusion pump controllers requiring stable component supply across extended product lifecycles.

Supply support for STM32F101ZGT6 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 ICs, sensors, and automotive semiconductors since 1987.

The STM32F101xG series targets cost-optimized, high-I/O-count industrial control applications - emphasizing Flash density, peripheral integration, and robustness in extended temperature and voltage ranges.

FAQ

What is the maximum operating frequency and associated performance metric?

The STM32F101ZGT6 operates at a maximum CPU frequency of 36 MHz, achieving 1.25 DMIPS/MHz (Dhrystone 2.1 benchmark), equating to ~45 DMIPS total. This performance level supports real-time scheduling of multiple communication stacks (e.g., Modbus + CANopen) alongside sensor processing and UI rendering without external co-processors.

Does this MCU support external memory expansion, and what types are compatible?

Yes, the integrated Flexible Static Memory Controller (FSMC) supports external NOR flash, PSRAM, NAND flash, SRAM, and CompactFlash via four independent chip-selects. It provides configurable timing registers for asynchronous and synchronous protocols, enabling direct connection without address latches or glue logic - validated per datasheet Sections 2.3.6 and 5.3.10.

How many analog-to-digital converter channels does it have, and what is their resolution and speed?

The device integrates one 12-bit ADC with up to 16 external input channels and a conversion time of 1 µs. It includes an internal temperature sensor and supports conversion ranges from 0 to 3.6 V. Accuracy is ±1 LSB INL/DNL over temperature, verified per datasheet Table 56 and Figure 11.

Is there hardware support for debugging and programming in-circuit?

Yes, the STM32F101ZGT6 features Serial Wire Debug (SWD) and JTAG interfaces compliant with ARM CoreSight. SWD uses only two pins (SWCLK/SWDIO), enabling full debug visibility, flash programming, and real-time variable inspection - supported by ST-LINK/V2 and third-party tools like OpenOCD and Segger J-Link.