STM32F042C6T6 - 48MHz Cortex-M0 32KB Flash USB MCU | STMicroelectronics
料号： STM32F042C6T6 ✓ 量产中STM32F042C6T6 概述
A microcontroller integrates a CPU core, memory, and peripheral blocks into one semiconductor device. The STM32F0 family uses an Arm Cortex-M0 core within the broader 32-bit embedded microcontroller hierarchy, providing deterministic control performance, efficient interrupt handling, and a broad ecosystem of software development tools. The STM32F042C6T6 targets USB, CAN, industrial-control, consumer-electronics, and accessory applications.
The device operates from a 2.5 V or 3.3 V supply, as identified in the distributor listing. Its 48 MHz maximum operating frequency supports responsive control loops and USB full-speed device communication compliant with USB 2.0. The integrated USB device peripheral includes an internal USB PHY and embedded DP pull-up, while the datasheet summary identifies battery-charging detection support according to the Battery Charging Specification Revision 1.2.
The STM32F042x4/x6 family also provides a CAN peripheral, making the MCU appropriate for industrial and embedded communication systems. The 48-LQFP 7x7 mm package exposes the required GPIO, communication, power, debug, and clock connections in a widely manufacturable surface-mount format.
Typical uses include USB-connected configuration tools, data acquisition modules, compact industrial controllers, CAN-connected sensor nodes, and USB peripheral accessories. The 32 KB Flash capacity is appropriate for applications with moderate firmware size, while the 48 MHz core provides useful performance margin for protocol handling and real-time control.
Designers should confirm the exact pin multiplexing, crystal requirements, USB implementation guidance, and decoupling values against the manufacturer datasheet before layout. This page combines distributor availability data, manufacturer specifications, package information, and application guidance to support component selection and sourcing.
直接替换替代料： STM32F042C6T6 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： STM32F042C6T6 （相同外形与封装尺寸） ——差异在于 Package, Core, Flash Memory, SRAM, ADC.
STM32F042C6T6
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →STM32F042C8T6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32F051C6T6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32F051C8T6
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →STM32F072C6T6
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
STM32F072C8T6
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →STM32F042C6T6 最大额定值与电气特性
| Core | ARM Cortex-M0, 32-bit RISC |
| Maximum CPU Frequency | 48 MHz |
| Flash Memory | 32 KB (32K x 8) |
| SRAM | 6 KB |
| 工作电源电压 | 2.5 V / 3.3 V |
| USB Interface | USB Full-Speed device, USB 2.0 |
| CAN Interface | CAN peripheral |
| 封装 | 48-LQFP (7x7 mm) |
| 安装类型 | Surface Mount |
| Product Range | STM32F0 Series |
| Core Architecture | ARM Cortex-M0 |
| Flash Organization | 32K x 8 |
| USB PHY | Internal USB PHY |
| USB DP Pull-Up | Embedded |
| Battery Charging Detection | Battery Charging Specification Revision 1.2 |
| MSL 等级 | 3 |
| RoHS 状态 | Compliant |
STM32F042C6T6 引脚配置
| 引脚 1 | VBAT — Backup supply pin |
| 引脚 2 | PC13 — General-purpose input/output |
| 引脚 3 | PC14-OSC32_IN — General-purpose input/output or external oscillator input |
| 引脚 4 | PC15-OSC32_OUT — General-purpose input/output or external oscillator output |
| 引脚 5 | PF0-OSC_IN — General-purpose input/output or external oscillator input |
| 引脚 6 | PF1-OSC_OUT — General-purpose input/output or external oscillator output |
| 引脚 7 | NRST — Reset input |
| 引脚 8 | VDDA — Analog power supply |
| 引脚 9 | PA0 — General-purpose input/output or analog input |
| 引脚 10 | PA1 — General-purpose input/output or analog input |
| 引脚 11 | PA2 — General-purpose input/output or analog input |
| 引脚 12 | PA3 — General-purpose input/output or analog input |
| 引脚 13 | PA4 — General-purpose input/output or analog input |
| 引脚 14 | PA5 — General-purpose input/output or analog input |
| 引脚 15 | PA6 — General-purpose input/output or analog input |
| 引脚 16 | PA7 — General-purpose input/output or analog input |
| 引脚 17 | PB0 — General-purpose input/output or analog input |
| 引脚 18 | PB1 — General-purpose input/output or analog input |
| 引脚 19 | VSS — Ground |
| 引脚 20 | VDD — Digital power supply |
| 引脚 21 | PB2 — General-purpose input/output or BOOT1 |
| 引脚 22 | PB10 — General-purpose input/output or alternate-function signal |
| 引脚 23 | PB11 — General-purpose input/output or alternate-function signal |
| 引脚 24 | VSS — Ground |
| 引脚 25 | VDD — Digital power supply |
| 引脚 26 | PB12 — General-purpose input/output or alternate-function signal |
| 引脚 27 | PB13 — General-purpose input/output or alternate-function signal |
| 引脚 28 | PB14 — General-purpose input/output or alternate-function signal |
| 引脚 29 | PB15 — General-purpose input/output or alternate-function signal |
| 引脚 30 | PA8 — General-purpose input/output or alternate-function signal |
| 引脚 31 | PA9 — General-purpose input/output or alternate-function signal |
| 引脚 32 | PA10 — General-purpose input/output or alternate-function signal |
| 引脚 33 | PA11 — General-purpose input/output or USB/CAN alternate function |
| 引脚 34 | PA12 — General-purpose input/output or USB alternate function |
| 引脚 35 | PA13 — General-purpose input/output or debug signal |
| 引脚 36 | VSS — Ground |
| 引脚 37 | VDD — Digital power supply |
| 引脚 38 | PA14 — General-purpose input/output or debug signal |
| 引脚 39 | PA15 — General-purpose input/output or debug signal |
| 引脚 40 | PB3 — General-purpose input/output or debug signal |
| 引脚 41 | PB4 — General-purpose input/output or debug signal |
| 引脚 42 | PB5 — General-purpose input/output or alternate-function signal |
| 引脚 43 | PB6 — General-purpose input/output or alternate-function signal |
| 引脚 44 | PB7 — General-purpose input/output or alternate-function signal |
| 引脚 45 | BOOT0 — Boot mode selection input |
| 引脚 46 | PB8 — General-purpose input/output or alternate-function signal |
| 引脚 47 | PB9 — General-purpose input/output or alternate-function signal |
| 引脚 48 | VSS — Ground |
典型应用
STM32F042C6T6 适用于 6 应用s: USB Configuration and Programming Tool, USB-Peripheral Data Acquisition Module, CAN-Connected Industrial Sensor Node, USB-Accessory and Peripheral Controller, Battery-Powered Embedded Control Module, Consumer Electronics and Interface Controller.
USB Configuration and Programming Tool
The STM32F042C6T6 is suitable for a compact USB configuration adapter because it combines a 48 MHz Cortex-M0 core with a full-speed USB device peripheral and 32 KB of Flash. Its integrated USB PHY, embedded DP pull-up, and battery-charging detection support reduce the external interface burden. Place the MCU beside the USB connector, provide the datasheet-recommended decoupling, route D+ and D- as a controlled differential pair, and validate enumeration with the target host. The advantage over a simpler microcontroller is native USB support, although firmware size must remain within the 32 KB Flash budget.
推荐
USB-Peripheral Data Acquisition Module
The STM32F042C6T6 fits a small USB data-acquisition module that must stream sensor or control data to a host computer. Its 48 MHz CPU provides timing margin for sampling control and packet handling, while the USB full-speed device peripheral handles enumeration and data transfer without an external USB controller. The 32 KB Flash capacity is adequate for a focused acquisition application, but buffered streaming code must be sized carefully. The designer should use the manufacturer USB application guidance, place the MCU and connector close together, and isolate analog and digital sections to reduce USB-related noise coupling.
推荐
CAN-Connected Industrial Sensor Node
The STM32F042C6T6 is appropriate for a compact industrial sensor node requiring both CAN connectivity and USB service access. The manufacturer data identifies CAN support alongside the USB full-speed device peripheral, allowing one MCU to handle local sensing, remote bus communication, and a maintenance connection. Its 48 MHz Cortex-M0 execution rate supports interrupt-driven communication and control tasks, while the 6 KB SRAM limits the feasible buffering strategy. Use a bus transceiver, protection network, and isolated or filtered CAN interface, and follow the datasheet layout guidance for EMC-sensitive industrial equipment.
推荐
USB-Accessory and Peripheral Controller
A low-cost USB accessory can use the STM32F042C6T6 as its central controller because the device combines USB device connectivity with general-purpose embedded control in a single 48-LQFP package. The 32 KB Flash is sufficient for bootloader plus application firmware in focused accessories, and the 48 MHz core leaves room for status LEDs, buttons, and local sensor handling. Compared with a higher-end Cortex-M device, the F042 offers a lower-complexity platform, but firmware partitioning is important if USB stacks, bootloaders, and application code coexist. Validate USB suspend, resume, and bus-powered current behavior during system qualification.
推荐
Battery-Powered Embedded Control Module
The STM32F042C6T6 can serve as the controller in a small battery-powered module where USB is used for charging, configuration, or data exchange. Its 2.5 V or 3.3 V operating range supports common regulated rails, and the integrated USB battery-charging detection function simplifies implementation of a USB-connected power path. The Cortex-M0 core and 48 MHz clock provide adequate control performance without requiring a high-power application processor. Low-power design still depends on peripheral settings, clock configuration, and firmware sleep modes, so consult the manufacturer sleep-mode and brownout guidance rather than assuming USB operation is low power.
推荐
Consumer Electronics and Interface Controller
The STM32F042C6T6 is appropriate for a compact consumer interface controller that manages USB connectivity, front-panel controls, and low-speed status signalling. Its 48 MHz Cortex-M0 core provides deterministic interrupt servicing, while 32 KB Flash and 6 KB SRAM fit many control-only products without an external memory device. The 48-LQFP package offers a practical balance between pin availability and board size. Designers should confirm the exact GPIO alternate functions, oscillator arrangements, and low-power requirements for the production enclosure, and should avoid using the USB-connected state as a substitute for a complete power-budget analysis.
推荐
推荐产品汇总
工程参考数据： STM32F042C6T6 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | STM32F042C8T6 | STM32F051C6T6 | STM32F051C8T6 | STM32F072C6T6 | STM32F072C8T6 |
|---|---|---|---|---|---|---|
| Package | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | ARM Cortex-M0, 32-bit | ARM Cortex-M0, 32-bit | ARM Cortex-M0, 32-bit | ARM Cortex-M0, 32-bit | ARM Cortex-M0, 32-bit | ARM Cortex-M0, 32-bit |
| Maximum Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 32 KB | 64 KB | 32 KB | 64 KB | 32 KB | 64 KB |
| SRAM | 6 KB | 8 KB | 6 KB | 8 KB | 6 KB | 8 KB |
| Supply Voltage | 2.5 V / 3.3 V | 2.5 V / 3.3 V | 2.5 V / 3.3 V | 2.5 V / 3.3 V | 2.5 V / 3.3 V | 2.5 V / 3.3 V |
关键差异点
- Combines USB full-speed device support with CAN in one Cortex-M0 MCU （对比 STM32F072C6T6)
- Lower flash capacity provides a defined 32 KB firmware target （对比 STM32F042C8T6)
- 48 MHz Cortex-M0 performance with USB device connectivity （对比 STM32F051C6T6)
- Established STM32F0 software and peripheral positioning （对比 GD32F103)
设计说明
Use the manufacturer datasheet power-supply and decoupling recommendations rather than treating the 2.5 V/3.3 V operating-voltage statement as a complete power design. Place supply capacitors close to the VDD and VDDA pins, route analog and digital returns according to the reference layout, and verify the regulator headroom required by the USB PHY and any external load. Estimated note: the actual dissipation and current draw depend on clock configuration, peripheral use, and USB activity, so no datasheet figure is inferred here.
Keep the USB D+ and D- routing short, impedance-controlled, and away from switching nodes and noisy analog inputs. Provide a continuous ground reference beneath the pair and place USB-related passive components close to their associated pins. For CAN, isolate the transceiver from the MCU side of the board and follow the transceiver manufacturer's termination and protection guidance. The MCU's 48-LQFP footprint leaves adequate escape routing, but pin multiplexing must be confirmed in the official pin table.
Do not assume that a family member with the same package is automatically firmware- or function-compatible. The STM32F042, STM32F051, and STM32F072 alternatives differ in Flash, SRAM, peripheral availability, and alternate-function behavior; validate boot configuration, interrupt mapping, USB descriptor support, and CAN implementation before release. Also check the exact ordering-code suffix, because tray and tape-and-reel packaging are separate procurement options even though the electrical device is the same.
合规信息
RoHS compliance is reported by the verified PartGenie result. Other compliance attributes were not explicitly provided in the verified data and are therefore marked unknown. AEC-Q100 qualification was not identified for this part.
