STMicroelectronics STM32F100VET7B

Overview

STM32F100VET7B from STMicroelectronics is a high-density value-line Arm® Cortex®-M3 microcontroller with 512 KB Flash, 32 KB SRAM, 24 MHz max CPU frequency, dual 12-bit DACs, and up to 112 I/Os in LQFP100 package-used in industrial HMI control panels requiring integrated analog output and real-time timer management.

For engineers reviewing the STM32F100VET7B datasheet, STM32F100VET7B pinout, STM32F100VET7B application, or STM32F100VET7B equivalent, key selection criteria include Flash/SRAM capacity, DAC resolution and count, 16-bit advanced-control timer availability, and LQFP100 thermal performance for convection-cooled embedded systems.

Technical Context

The device implements an Arm Cortex-M3 core with single-cycle multiply and hardware divide, supporting deterministic real-time execution. Its clock system integrates a 4–24 MHz external crystal oscillator, 8 MHz factory-trimmed RC, and PLL for scalable CPU clock generation up to 24 MHz.

Peripheral architecture includes a flexible static memory controller (FSMC) with four chip selects for NOR/PSRAM expansion, parallel LCD interface (8080/6800 modes), and nested vectored interrupt controller (NVIC) supporting 68 interrupt channels-including 16 external vectors mapped across all GPIO ports.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, rated for industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F072VBT6, the STM32F100VET7B delivers higher analog integration and memory for HMI/motor control; versus STM32F303VCT6, it trades FPU and op-amps for FSMC and industrial temperature grade-making it optimal for cost-constrained, memory-expandable embedded controllers.

Availability

STM32F100VET7B is available at Aetrix Electronics and suitable for industrial HMI panels, motor drive modules, PLC I/O expansion, and energy metering front-ends requiring stable component supply across extended product lifecycles.

Supply support for STM32F100VET7B 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F100 Value Line targets cost-sensitive industrial and appliance applications where Flash density, analog integration, and peripheral flexibility outweigh peak CPU performance-emphasizing reliability, longevity, and ease of migration within the STM32 ecosystem.

FAQ

What is the maximum operating frequency of the STM32F100VET7B?

The STM32F100VET7B operates at a maximum CPU frequency of 24 MHz, achieved via its internal PLL driven by either the 4–24 MHz external crystal oscillator or the 8 MHz internal RC oscillator. This frequency is fixed-not user-scalable beyond 24 MHz-and optimized for deterministic real-time behavior with low power consumption in industrial environments.

Does the STM32F100VET7B support external memory expansion?

Yes, it integrates a Flexible Static Memory Controller (FSMC) with four independent chip select lines supporting asynchronous and synchronous NOR flash, PSRAM, and SRAM devices. The FSMC enables direct 8-/16-bit bus interfacing-commonly used for external display frame buffers or firmware storage expansion beyond the 512 KB on-chip Flash.

How many analog-to-digital converter (ADC) channels does this MCU provide?

The STM32F100VET7B includes one 12-bit ADC with up to 16 external input channels and a 1.2 µs conversion time. It also integrates a calibrated temperature sensor and supports VREFINT measurement, enabling simultaneous acquisition of multiple analog signals such as voltage, current, and thermal data in motor control or power monitoring applications.

Is the STM32F100VET7B pin-compatible with other STM32F100 variants?

No-pin compatibility is limited to same-package variants within the STM32F100xD family (e.g., STM32F100VDT6 in LQFP100). The 'V' prefix denotes 100-pin LQFP, but differences in Flash size (E=512 KB vs D=384 KB) and peripheral enablement (e.g., FSMC availability) require careful register-level validation during migration.