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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

STMicroelectronics STM32F100R8H7B

Name: STM32F100R8H7B
Brand: STMicroelectronics
SKU: STM32F100R8H7B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32F100R8H7B

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 64-TFBGA

Datasheet:: STM32F100R8H7B.pdf

Description:: IC MCU 32BIT 64KB FLASH 64BGA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STM32F100R8H7B from STMicroelectronics is a 32-bit ARM® Cortex®-M3 microcontroller in LQFP64 package, featuring 64 KB Flash, 8 KB SRAM, 24 MHz max CPU frequency, 1×12-bit ADC (16-channel), and 2×12-bit DACs. It integrates 12 timers-including advanced-control timer with dead-time generation-and supports up to 8 communication interfaces (3×USART, 2×SPI, 2×I²C, CEC) for embedded control in industrial sensors and motor drives.

For engineers reviewing the STM32F100R8H7B datasheet, STM32F100R8H7B pinout, STM32F100R8H7B application, or STM32F100R8H7B equivalent, key selection criteria include Flash/SRAM capacity, 5 V-tolerant I/O count (up to 51 pins), RTC with VBAT backup, SWD/JTAG debug support, and low-power Stop/Standby modes for battery-operated devices.

Technical Context

The STM32F100R8H7B implements an ARM Cortex-M3 core with single-cycle multiplication and hardware division, delivering 1.25 DMIPS/MHz at 24 MHz. Its clock system includes dual oscillators (8 MHz HSI, 32 kHz LSE), PLL for CPU clock scaling, and dedicated RTC oscillator with calibration.

Peripherals are tightly coupled via a multilayer AHB/APB bus matrix: 7-channel DMA services ADC, DAC, USART, SPI, and I²C; NVIC supports 64 interrupt channels; EXTI maps all GPIOs to 16 external interrupt vectors with edge-selectable sensitivity.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	ARM Cortex-M3, 24 MHz max - enables deterministic real-time control with <1 µs interrupt latency.
Memory	64 KB Flash + 8 KB SRAM - sufficient for firmware with USB stack, sensor fusion, and communication protocol stacks.
ADC	1×12-bit, 1.2 µs conversion, 16-channel - supports simultaneous sampling of multiple analog sensors (e.g., current, voltage, temperature).
DAC	2×12-bit, buffered outputs - provides precise analog waveform generation or programmable biasing for op-amp circuits.
I/O Pins	51 GPIO, 5 V-tolerant - simplifies interface with legacy 5 V logic and industrial sensors without level shifters.
Timers	12 timers including 1×advanced-control (6 PWM channels + dead-time), 2×basic (DAC trigger), 2×watchdog - enables motor FOC, power supply sequencing, and safety monitoring.
Communication	3×USART (LIN/IrDA), 2×SPI (12 Mbit/s), 2×I²C (SMBus/PMBus), CEC - supports multi-protocol fieldbus connectivity and consumer electronics control.
Power Modes	Sleep/Stop/Standby with VBAT RTC - achieves <10 µA Standby current, enabling >1-year battery life in metering applications.

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK® certified. Pinout validated per STMicroelectronics DocID16455 Rev 9, Figure 4 (STM32F100xx LQFP64 pinout).

Pin/Terminal	Circuit Role	Design Meaning
VDD, VSS	Power supply and ground	Dual 2.0–3.6 V supply rails; separate analog/digital domains reduce noise coupling in mixed-signal operation.
PA0–PA15, PB0–PB15, PC13–PC15	General-purpose I/O	51 total 5 V-tolerant pins; remappable to multiple peripheral functions (e.g., USART_TX/RX, SPI_MOSI/MISO) via AFIO register.
OSC_IN / OSC_OUT	External crystal oscillator input/output	Supports 4–24 MHz crystals; essential for precise timing in communication protocols and RTC calibration.
NRST	Active-low reset	Externally driven reset with internal pull-up; accepts 1.65–5.5 V logic levels for robust system-level reset coordination.
SWDIO / SWCLK	Serial Wire Debug interface	2-pin debug port replacing JTAG; enables full flash programming, breakpoint debugging, and real-time variable watch in resource-constrained designs.

Key Features

Feature	Design Value
Programmable voltage detector (PVD)	Monitors VDD against 4 selectable thresholds (2.2–2.9 V); triggers interrupt or reset to prevent erratic operation during brown-out.
Temperature sensor	Integrated calibrated sensor (±1.5°C accuracy) connected to ADC channel 16 - enables on-chip thermal monitoring without external components.
CRC calculation unit	Hardware-accelerated 32-bit CRC-32 generator - verifies firmware integrity and data packet validity in bootloader and communication stacks.
96-bit unique ID	Factory-programmed serial number - supports secure device authentication, license binding, and anti-cloning in OEM deployments.
CEC interface	HDMI Consumer Electronics Control PHY layer - allows MCU to act as CEC initiator or follower in smart home AV systems.

Applications

Industrial Sensor Node

Smart HVAC Actuator

Use Scenario: Compact environmental monitor measuring temperature, humidity, and CO₂ using analog and digital sensors.

IC Role / Device Role / Timing Role: Main controller executing sensor fusion algorithm, managing I²C/SPI sensor interfaces, and driving UART-based wireless module.

Use Value: 16-channel ADC enables concurrent acquisition; 8 KB SRAM accommodates Kalman filter buffers; low-power Stop mode extends battery life to 2+ years.

Use Scenario: Motorized damper controller regulating airflow in commercial HVAC ducts.

IC Role / Device Role / Timing Role: Precision motion controller generating complementary PWM signals with programmable dead-time for BLDC driver ICs.

Use Value: Advanced-control timer delivers synchronized 6-channel PWM; 5 V-tolerant I/O interfaces directly with position feedback encoders and 24 V logic.

Energy Meter Front-End

USB-C Power Delivery Monitor

Use Scenario: Residential electricity meter measuring voltage/current via shunt/CT and computing RMS, harmonics, and energy.

IC Role / Device Role / Timing Role: Analog front-end processor acquiring ADC samples at fixed intervals, performing real-time FFT, and communicating via isolated RS-485.

Use Value: 1.2 µs ADC conversion supports ≥10 kSPS sampling; CRC unit validates metering data integrity before transmission.

Use Scenario: USB-C PD sink side monitor tracking VBUS voltage/current and negotiating power contracts via CC line.

IC Role / Device Role / Timing Role: Dedicated PD policy engine interfacing with USB-C transceiver, managing state machine, and controlling buck converter feedback.

Use Value: 3×USART with LIN capability supports CC logic-level signaling; 2×DACs generate precise reference voltages for analog monitoring circuits.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM32F070F6P6	ARM Cortex-M0, 48 MHz, 32 KB Flash, no DAC, 1×ADC (10-bit, 9 channels)	Lacks dual DAC and advanced timer features; insufficient for motor control or precision analog output.	Select when cost-sensitive, low-complexity control (e.g., LED dimming) suffices and DAC/RTC are unnecessary.
STM32F103C8T6	Cortex-M3, 72 MHz, 64 KB Flash, 20 KB SRAM, no PVD, no CEC, LQFP48	Higher performance but missing PVD and CEC; smaller package limits I/O count (37 vs. 51).	Choose for compute-intensive tasks where extra SRAM matters and 5 V-tolerant I/O count is not critical.

Compared with STM32F100R8H7B, STM32F070F6P6 trades DACs and RTC backup for lower cost and power, while STM32F103C8T6 increases CPU speed and SRAM at the expense of integrated safety features (PVD) and application-specific peripherals (CEC, calibrated temperature sensor).

Availability

STM32F100R8H7B is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC actuators, energy meter front-ends, and USB-C power delivery monitors requiring stable component supply across extended product lifecycles.

Supply support for STM32F100R8H7B 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, and sensing solutions for industrial, automotive, and consumer markets.

The STM32F100 value line targets cost-sensitive, low-power embedded applications requiring rich analog integration and communication flexibility - designed specifically for industrial automation, building controls, and portable instrumentation.

FAQ

What is the maximum operating temperature range for STM32F100R8H7B?

The STM32F100R8H7B is rated for industrial temperature range: –40 °C to +85 °C. This is confirmed in Section 5.3.1 of ST's DocID16455 Rev 9, specifying ambient operating conditions and thermal derating curves up to 85 °C junction temperature under defined PCB copper area and airflow conditions.

Does STM32F100R8H7B support USB device functionality?

No, the STM32F100R8H7B does not include a USB peripheral. Unlike higher-density STM32F103 variants, this value-line device omits USB OTG and relies on USART, SPI, or I²C for host communication - verified in Table 2 (feature comparison) and Section 2.2.16–2.2.18 of the datasheet.

Can the internal 8 MHz RC oscillator be used as system clock without external crystal?

Yes, the factory-trimmed 8 MHz HSI oscillator can serve as the main system clock source. It achieves ±1% accuracy over temperature and voltage, sufficient for UART communication at 9600–115200 baud; PLL may be enabled to reach 24 MHz - detailed in Section 5.3.7 and Figure 2 (clock tree).

How many external interrupt lines are available on STM32F100R8H7B?

The device supports 16 external interrupt lines (EXTI0–EXTI15), each configurable for rising/falling/both-edge detection. All 51 GPIO pins can be mapped to these lines via SYSCFG_EXTICR registers - confirmed in Section 2.2.6 (EXTI) and Table 4 (pin definitions) of the datasheet.

STM32F100R8H7B Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 64-TFBGA

Series:: STM32F1

Packaging:: Tray

Product Status:: Active

Programmable:: Not Verified

Core Processor:: ARM® Cortex®-M3

Core Size:: 32-Bit Single-Core

Speed:: 24MHz

Connectivity:: I2C, IrDA, LINbus, SPI, UART/USART

Peripherals:: DMA, PDR, POR, PVD, PWM, Temp Sensor, WDT

Number of I/O:: 51

Program Memory Size:: 64KB (64K x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 8K x 8

Voltage - Supply (Vcc/Vdd):: 2V ~ 3.6V

Data Converters:: A/D 16x12b; D/A 2x12b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 105°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

STM32F100R8H7B FAQ

1.How can I place an order for STM32F100R8H7B through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32F100R8H7B on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STM32F100R8H7B reliable?

The price and inventory of STM32F100R8H7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F100R8H7B is usually 5 days.

3.What payment methods are accepted for STM32F100R8H7B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F100R8H7B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32F100R8H7B?

STM32F100R8H7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32F100R8H7B order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STM32F100R8H7B?

For technical support, including STM32F100R8H7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F100R8H7B requirements.

6.How does Aetrix verify that STM32F100R8H7B is sourced from the original manufacturer or authorized distributors?

All STM32F100R8H7B products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F100R8H7B meets industry standards.

7.What is the process for return or replacement of STM32F100R8H7B?

All STM32F100R8H7B units undergo pre-shipment inspection (PSI). If there is an issue with STM32F100R8H7B, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STM32F100R8H7B part is unused and in its original packaging.

Return procedure for STM32F100R8H7B:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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