STMicroelectronics STM32F100ZCT6B

Overview

STM32F100ZCT6B from STMicroelectronics is a high-density value-line Arm® Cortex®-M3 microcontroller featuring 512 KB Flash, 32 KB SRAM, 24 MHz max CPU frequency, dual 12-bit DACs, and up to 112 I/Os in LQFP144 package. It integrates 16 timers (including advanced-control timer with dead-time generation), 1×12-bit ADC (16-channel, 1.2 µs conversion), and 11 communication interfaces - used in industrial motor control and embedded HMI systems requiring integrated analog I/O and real-time PWM.

For engineers reviewing the STM32F100ZCT6B datasheet, STM32F100ZCT6B pinout, STM32F100ZCT6B application, or STM32F100ZCT6B equivalent, key selection criteria include Flash/SRAM size, DAC/ADC resolution and channel count, timer architecture for motor control, I/O voltage tolerance (5 V-tolerant), and LQFP144 package compatibility with existing PCB layouts.

Technical Context

The device implements an Arm Cortex-M3 core with single-cycle multiply/hardware divide, supporting deterministic real-time execution. Its clock system includes dual oscillators (4–24 MHz HSE + 32.768 kHz LSE), programmable PLL, and factory-trimmed 8 MHz HSI - enabling precise timing for RTC, USB-less communication, and synchronized PWM generation.

Peripheral integration centers on mixed-signal control: the flexible static memory controller (FSMC) supports external SRAM/PSRAM/NOR, while the LCD parallel interface (8080/6800 modes) and temperature sensor enable compact HMI designs. DMA channels (12) offload CPU for concurrent ADC sampling, DAC output, and SPI/I²C data transfers without interrupt latency.

Key Specifications

Pinout & Package

LQFP144 (20 × 20 mm, 0.5 mm pitch) package with exposed thermal pad; suitable for industrial PCBs requiring mechanical robustness and thermal dissipation under continuous 24 MHz operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F100ZCT6B, STM32F103ZET6 trades analog peripherals for raw speed and larger program space, while STM32F072ZBT6 reduces cost and power at the expense of Flash, RAM, and mixed-signal integration - making STM32F100ZCT6B optimal for balanced analog-digital control in space-constrained industrial modules.

Availability

STM32F100ZCT6B is available at Aetrix Electronics and suitable for industrial motor drives, embedded HMI panels, smart energy meters, and home appliance controllers requiring stable component supply across long product lifecycles.

Supply support for STM32F100ZCT6B 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 specializing in microcontrollers, power management, and analog/mixed-signal ICs for industrial, automotive, and consumer markets.

This part belongs to the STM32F100 Value Line - designed specifically for cost-sensitive, high-volume embedded applications demanding rich analog integration (DAC/ADC), real-time control (advanced timers), and extended temperature operation (–40°C to +85°C).

FAQ

What is the maximum operating temperature range for STM32F100ZCT6B?

The STM32F100ZCT6B is rated for industrial temperature range: –40°C to +85°C ambient. This is confirmed in Section 5.3.1 of DS5944 Rev 11, with thermal characteristics validated per JEDEC JESD51-2. The LQFP144 package's θ_JA is 26.5°C/W, enabling reliable operation at full 24 MHz CPU frequency within this range when PCB thermal design meets recommended copper area guidelines.

Does STM32F100ZCT6B support USB connectivity?

No, STM32F100ZCT6B does not include a USB peripheral. Unlike some other STM32F10x series devices (e.g., STM32F103), it omits USB OTG or device controllers. Its communication interfaces are limited to USART, UART, SPI, I²C, CAN (not present in F100 series), and CEC - making it suitable for non-USB fieldbus or proprietary wired protocols.

Can the internal 8 MHz RC oscillator be used as the system clock source?

Yes, the internal 8 MHz factory-trimmed HSI oscillator can serve as the system clock source, either directly or as PLL input. Its typical accuracy is ±1% over temperature and voltage, sufficient for UART communication (with oversampling) and non-critical timing. For precise timing (e.g., RTC or LIN), the external 32.768 kHz LSE or 4–24 MHz HSE is required.

How many external interrupt lines are available on STM32F100ZCT6B?

STM32F100ZCT6B provides 16 external interrupt/event lines (EXTI0–EXTI15), each configurable to trigger on rising/falling edges or both. All 112 GPIO pins can be mapped to these 16 lines via the AFIO register, enabling flexible wake-up and event handling from buttons, sensors, or communication signals without dedicated interrupt pins.