STMicroelectronics STM32F100VBT6BTR

Overview

STM32F100VBT6BTR from STMicroelectronics is a low- to medium-density value-line ARM® Cortex®-M3 microcontroller featuring 128 KB Flash, 8 KB SRAM, 24 MHz max CPU frequency, 12-bit ADC with 16 channels, and dual 12-bit DACs. It integrates 12 timers (including advanced-control timer with dead-time generation), 8 communication interfaces (3 USARTs, 2 SPIs, 2 I²Cs, CEC), and operates across 2.0–3.6 V supply range for industrial sensor nodes and motor control edge devices.

For engineers reviewing the STM32F100VBT6BTR datasheet, STM32F100VBT6BTR pinout, STM32F100VBT6BTR application, or STM32F100VBT6BTR equivalent, key selection criteria include Flash/SRAM size, 100-pin LQFP package compatibility, real-time peripheral count (e.g., 3x USART, 2x DAC), and support for 5 V-tolerant I/Os in cost-sensitive embedded designs.

Technical Context

The STM32F100VBT6BTR implements an ARM Cortex-M3 core with single-cycle multiplication and hardware division, delivering 1.25 DMIPS/MHz performance at up to 24 MHz. Its clock system includes a 4–24 MHz external crystal oscillator, factory-trimmed 8 MHz RC, 40 kHz RC, PLL for CPU clock scaling, and dedicated 32 kHz RTC oscillator with calibration.

Peripheral architecture features a 7-channel DMA controller servicing timers, ADC, SPI, I²C, USART, and DAC; nested vectored interrupt controller (NVIC) supporting up to 68 interrupts; and memory-mapped peripherals including CRC calculation unit and 96-bit unique ID. All 80 I/Os are 5 V-tolerant and mappable to 16 external interrupt vectors.

Key Specifications

Pinout & Package

LQFP100 package: 14 × 14 mm, 0.5 mm pitch, 100-pin low-profile quad flat package with exposed thermal pad (ECOPACK® compliant). Pinout validated per STMicroelectronics DocID16455 Rev 9 Figure 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F100VBT6BTR, STM32F072RBT6 trades DAC and advanced timers for lower cost and power, while STM32F103VBT6 upgrades clock speed and memory at the expense of higher active current - making the F100 optimal for balanced 24 MHz real-time control with analog precision.

Availability

STM32F100VBT6BTR is available at Aetrix Electronics and suitable for industrial sensor nodes, motor control interfaces, smart appliance UIs, and energy metering modules requiring stable component supply and long-term production continuity.

Supply support for STM32F100VBT6BTR 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, specializing in microcontrollers, power management, sensors, and automotive ICs with broad industrial and consumer reach.

The STM32F100 value line targets cost-optimized, low-power embedded applications where Flash density, analog integration, and 5 V-tolerant I/Os outweigh raw processing speed - ideal for white goods, building automation, and portable instrumentation.

FAQ

What is the maximum operating frequency and core type of the STM32F100VBT6BTR?

The STM32F100VBT6BTR uses an ARM Cortex-M3 core with a maximum operating frequency of 24 MHz, delivering 1.25 DMIPS/MHz performance. It includes single-cycle multiplication and hardware division units, enabling efficient real-time signal processing and control loop execution without floating-point coprocessor dependency.

Does the STM32F100VBT6BTR support 5 V-tolerant I/Os, and how many pins are available?

Yes, all 80 I/O pins on the STM32F100VBT6BTR are 5 V-tolerant, verified per STMicroelectronics electrical characteristics Table 34. This eliminates external level shifters when interfacing with 5 V sensors, actuators, or legacy logic, and applies to all GPIO ports (PA–PE) regardless of configured alternate function.

What analog peripherals are integrated, and what are their key specifications?

The device integrates one 12-bit ADC with 16 input channels and 1.2 µs conversion time, plus two independent 12-bit DACs. The ADC supports 0–3.6 V input range and includes an integrated temperature sensor with ±1.5°C accuracy. DAC outputs are rail-to-rail and support buffered/unbuffered modes per datasheet Section 2.2.23.

Which debug interface does the STM32F100VBT6BTR use, and what are its physical requirements?

The STM32F100VBT6BTR supports Serial Wire Debug (SWD) using SWDIO and SWCLK pins (PA13/PA14), requiring only two signals versus five for JTAG. SWD provides full debug functionality including breakpoints, watchpoints, and memory access. No external pull-ups are needed; internal weak pull-downs on SWDIO ensure safe reset state.