STM32F042K4T6 - 48MHz Cortex-M0 16KB MCU | STMicroelectronics
料号： STM32F042K4T6 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.0363 | $3.04 |
| 10 | $2.28462 | $22.85 |
| 25 | $2.09635 | $52.41 |
| 100 | $1.88973 | $188.97 |
| 250 | $1.79116 | $447.79 |
| 500 | $1.73175 | $865.88 |
| 1,000 | $1.68286 | $1,682.86 |
| 2,500 | $1.63123 | $4,078.08 |
| 5,000 | $1.60013 | $8,000.65 |
STM32F042K4T6 概述
What is an ARM Cortex-M0 microcontroller? An MCU is an integrated semiconductor containing a processor core, memory, peripherals, and interfaces on one package. The ARM Cortex-M0 is a compact 32-bit embedded processor core designed for cost-sensitive, energy-efficient control systems. In the STM32F0 family, it supports embedded control, USB communications, CAN networking, and general-purpose peripherals within a small power-management and processing footprint.
Key features include a 48 MHz maximum CPU frequency and 16 KB of Flash memory. The verified distributor listing identifies 16 KB organized as 16K x 8 and identifies USB and CAN connectivity. The STM32F042K4T6 is also listed with 2.5 V and 3.3 V operating-supply descriptions in distributor data. Its 32-LQFP 7 x 7 mm package provides 32 external pins for power, clock, communication, and general-purpose I/O connections.
The device is suited to compact USB-connected peripherals, CAN-based industrial interfaces, low-cost control panels, sensor hubs, and embedded instrumentation. Its 48 MHz Cortex-M0 core is appropriate for interrupt-driven control, protocol handling, and application logic where a higher-performance Cortex-M3 or Cortex-M4 core is unnecessary. The 16 KB Flash capacity requires attention when selecting firmware size, boot code, and application-code partitioning.
For PCB implementation, confirm the exact pin assignment and exposed functionality against the manufacturer datasheet before routing USB, CAN, crystal, reset, and supply connections. The provided search data does not include a complete electrical timing table, absolute maximum ratings, transceiver details, or a verified pin-by-pin description; those values require manufacturer documentation. The 32-LQFP package is suitable for automated assembly and is distinct from STM32F042K4U6, which uses a different package option.
This page synthesizes verified distributor specifications, package information, pricing references, available cross-reference candidates, and practical sourcing considerations for engineers evaluating the STM32F042K4T6. Confirm current stock, lifecycle status, and manufacturer documentation before production release.
直接替换替代料： STM32F042K4T6 ——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： STM32F042K4T6 （相同外形与封装尺寸） ——差异在于 Package.
快速对比工具——选择替代料号进行并排对比：
STM32F042K6T6
✅ 直接替换✓ 有现货
$1.84 / 个
查看数据手册 →STM32F042K4T6TR
✅ 直接替换📋 参考替代料（不在目录中）
STM32F042K4U6
✅ 直接替换📋 参考替代料（不在目录中）
STM32F042K4T6
✅ 直接替换✓ 有现货
$1.60013 / 个
查看数据手册 →STM32F042K4T6 最大额定值与电气特性
| Product Type | ARM Cortex-M0 32-bit Microcontroller |
| Product Family | STM32F0 |
| Maximum CPU Frequency | 48 MHz |
| Processor Core | ARM Cortex-M0 |
| Flash Memory | 16 KB (16K x 8) |
| 电源电压 | 2.5 V to 3.3 V |
| Connectivity | USB and CAN |
| 封装 | 32-LQFP 7 x 7 mm |
| 引脚数 | 32 pins |
| Architecture | 32-bit RISC |
| 安装类型 | Surface Mount |
STM32F042K4T6 32-lqfp 7 x 7 mm 引脚配置指南
STM32F042K4T6（32-lqfp 7 x 7 mm 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： STM32F042K4T6.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM32F042K4T6 适用于 6 应用s: USB-Connected Embedded Controller, CAN Bus Sensor Hub, USB-CAN Protocol Bridge, Low-Cost Industrial Control Module, USB-Firmware Update Dongle, Compact USB Security and Access Controller.
USB-Connected Embedded Controller
The STM32F042K4T6 fits compact USB-connected products because the verified listing identifies USB connectivity, a 48 MHz ARM Cortex-M0 core, and 16 KB Flash memory. It can manage device control, configuration, status reporting, and application-specific USB tasks in a small 32-LQFP 7 x 7 mm package. The 16 KB Flash limit is the main design constraint: boot code, descriptors, protocol stacks, and application logic must be budgeted together. Use the manufacturer datasheet to confirm USB device or host capability, pin multiplexing, transceiver requirements, clock configuration, and bus timing before finalizing the PCB.
推荐
CAN Bus Sensor Hub
The STM32F042K4T6 is suitable for a CAN-connected sensor hub when the system needs a low-cost 48 MHz Cortex-M0 controller with integrated CAN connectivity. Its 32-LQFP package provides access to communication and general-purpose pins, while an external CAN transceiver handles the physical bus. Use the device for sensor polling, local filtering, alarm thresholds, diagnostics, and message forwarding. Verify CAN timing, operating temperature, pin assignment, termination strategy, ESD protection, and isolation requirements in the manufacturer documentation before production.
推荐
USB-CAN Protocol Bridge
The STM32F042K4T6 can serve as the control MCU in a USB-to-CAN bridge when the application prioritizes a compact Cortex-M0 implementation with USB and CAN connectivity. The bridge can translate USB commands into CAN frames, maintain local status, and provide configurable filtering or diagnostics. Its 48 MHz processing rate is adequate for protocol handling, while the 16 KB Flash capacity limits the size of the protocol stack and management firmware. Validate USB enumeration, CAN bit timing, watchdog behavior, bus fault recovery, and thermal performance with the exact STMicroelectronics documentation.
推荐
Low-Cost Industrial Control Module
The STM32F042K4T6 is appropriate for compact industrial control modules that need deterministic embedded processing without a large application MCU. Its 48 MHz ARM Cortex-M0 core can execute interrupt-driven control logic, state-machine sequencing, input monitoring, and communication handling. The verified 32-LQFP 7 x 7 mm package simplifies board integration, but its 16 KB Flash memory requires disciplined firmware partitioning and may not suit complex human-interface or protocol stacks. Confirm industrial temperature requirements, supply tolerances, watchdog behavior, ESD protection, and long-term availability before design freeze.
推荐
USB-Firmware Update Dongle
The STM32F042K4T6 is a reasonable fit for a compact USB firmware-update dongle where the target device needs a Cortex-M0 controller, USB connectivity, and a small package. The MCU can manage USB enumeration, bootloader commands, authentication checks, flash programming, status reporting, and recovery logic. The verified 16 KB Flash capacity is a meaningful limitation, so a separate target-device bootloader and compact firmware architecture may be required. Confirm USB device support, boot-memory configuration, voltage levels, connector protection, and update endurance in the official datasheet and reference documentation.
推荐
Compact USB Security and Access Controller
The STM32F042K4T6 can support a compact USB security or access-control peripheral when the design requires local command handling and peripheral integration. Potential functions include credential input, relay or indicator control, event logging, and host communication over USB. The 48 MHz Cortex-M0 core supports real-time control logic, but the 16 KB Flash capacity and unverified security peripheral list make it necessary to review cryptographic requirements, timing, tamper handling, and code update strategy carefully. Use the manufacturer documentation to validate security features rather than assuming them from the STM32 family name.
推荐
推荐产品汇总
工程参考数据： STM32F042K4T6 ——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 | STM32F042K6T6 | STM32F042K4T6TR | STM32F042K4U6 | STM32F042C4U6 |
|---|---|---|---|---|---|
| Package | 32-LQFP 7 x 7 mm | 32-LQFP 7 x 7 mm | 32-LQFP 7 x 7 mm | 32-LQFP 7 x 7 mm | 48-LQFP; not same package |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Processor Core | ARM Cortex-M0 | ARM Cortex-M0 family | ARM Cortex-M0 family | ARM Cortex-M0 family | ARM Cortex-M0 family |
| Maximum Frequency | 48 MHz | 48 MHz family positioning | 48 MHz family positioning | 48 MHz family positioning | 48 MHz family positioning |
| Flash Memory | 16 KB | 32 KB | 16 KB base device | 16 KB family positioning | 16 KB family positioning |
| Connectivity | USB and CAN | STM32F042 family connectivity; verify exact peripheral set | STM32F042 base-device connectivity | STM32F042 family connectivity; verify exact peripheral set | STM32F042 family connectivity; verify exact peripheral set |
| Pin Count | 32 pins | 32 pins | 32 pins | 32 pins | 48 pins |
关键差异点
- A compact Cortex-M0 solution with integrated connectivity positioning （对比 STM32F042K4T6TR)
- More Flash headroom for protocol-heavy firmware （对比 STM32F042K6T6)
- Lower pin count for compact board layouts （对比 STM32F042C4U6)
设计说明
Route USB, CAN, clock, reset, and decoupling connections according to the official STM32F042K4T6 pinout and reference schematic. The verified data confirms a 32-LQFP 7 x 7 mm package, but it does not include the complete pin mapping. Before layout release, verify every alternate-function connection and keep the USB or CAN differential route short, continuous, and away from switching nodes. The package footprint and exposed-pad or thermal requirements must also be checked against the manufacturer drawing.
The supplied distributor data identifies 2.5 V and 3.3 V operation, but it does not provide the complete regulator sequencing or pin-level voltage table. Design the power tree around the manufacturer-recommended supply topology, include local ceramic decoupling at the MCU supply pins, and confirm startup behavior, current limits, brownout behavior, and maximum input voltage in the official datasheet. Do not infer USB or CAN transceiver voltage levels from the MCU supply label alone.
The 16 KB Flash capacity is the most consequential sizing constraint for this device. Include boot code, USB descriptors, CAN drivers, application logic, diagnostics, and update mechanisms in the memory budget rather than sizing only the main application. Confirm whether peripheral functions consume the same small package pins that are needed for debug or communication, and avoid selecting a 48-pin related part without planning the corresponding PCB redesign.
For USB or CAN interfaces, use the manufacturer reference layout and validate the external transceiver, protection network, connector geometry, return path, and impedance-controlled routing. CAN requires correct termination only at the physical bus endpoints and careful handling of transceiver standby/fault states. USB requires a compliant connector and signal path, but the supplied data does not confirm USB speed or device-versus-host capability; verify those details before selecting passives or a transceiver.
合规信息
The supplied distributor and cross-reference data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Obtain the current manufacturer product and quality documentation before making a compliance claim.
