STM32L431KCU6Alternatives & Equivalent Parts
About STM32L431KCU6
STM32L431KCU6 is a Integrated Circuit component manufactured by STMicroelectronics. It comes in a Quad Flat No-Lead package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | STM32L431KCU6Source | STM32L432KCU6 | STM32L431KBU6 | STM32L431KCU6TR | STM32L442KCU6 | STM32L431KBU3 | STM32L432KBU6 | STM32L432KCU3 | STM32L431KBU6TR | STM32L412KBU6 |
|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package Type | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead | Quad Flat No-Lead |
| Pin Count | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| Temperature Range | — | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 125.0°C | -40.0°C ~ 85.0°C | — | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C |
| Price | $2.1317 | $2.2300 | $1.7986 | $2.1857 | $2.5987 | $2.2887 | $2.0760 | $2.7705 | $1.8537 | $1.5500 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | ||||||||||
| Manufacturer Package Code | UFQFPN 32 5x5x0.55 | UFQFPN 32 5x5x0.55 | UFQFPN 32 5x5x0.55 | — | UFQFPN 32 5x5x0.55 | — | UFQFPN 32 5x5x0.55 | — | — | — |
| YTEOL | 9 | 9 | 9 | 9 | 8 | 9 | 9 | 9 | 9 | 9 |
| Has ADC | YES | YES | YES | YES | YES | YES | YES | YES | YES | YES |
| Bit Size | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 |
| Clock Frequency-Max | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| DMA Channels | YES | YES | YES | YES | YES | YES | YES | YES | YES | YES |
| JESD-609 Code | e3 | e3 | e3 | e3 | — | — | e3 | e3 | e3 | — |
| Number of I/O Lines | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| PWM Channels | YES | YES | YES | YES | YES | YES | YES | YES | YES | YES |
| Package Shape | SQUARE | SQUARE | SQUARE | SQUARE | SQUARE | SQUARE | SQUARE | SQUARE | SQUARE | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 | 260 | 260 | 260 | — | NOT SPECIFIED | 260 | 260 | 260 | 260 |
| Speed | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz | 80 MHz |
| Supply Voltage-Max | 3.6 V | 3.6 V | 3.6 V | 3.6 V | 3.6 V | 3.6 V | 3.6 V | 3.6 V | 3.6 V | 3.6 V |
| Supply Voltage-Min | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.71 V | 1.8 V | 1.71 V | 1.8 V | 1.8 V |
| Supply Voltage-Nom | 3 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 3 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Surface Mount | YES | YES | YES | YES | YES | YES | YES | YES | YES | YES |
| Terminal Finish | Matte Tin (Sn) | Matte Tin (Sn) - annealed | Matte Tin (Sn) | Matte Tin (Sn) | — | — | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Tin (Sn) - immersion |
| Terminal Form | NO LEAD | NO LEAD | NO LEAD | NO LEAD | NO LEAD | NO LEAD | NO LEAD | NO LEAD | NO LEAD | NO LEAD |
| Terminal Pitch | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm | 0.5 mm |
| Terminal Position | QUAD | QUAD | QUAD | QUAD | QUAD | QUAD | QUAD | QUAD | QUAD | QUAD |
| uPs/uCs/Peripheral ICs Type | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC | MICROCONTROLLER, RISC |
| Date Of Intro | — | 2018-05-25 | — | — | — | — | 2018-05-25 | 2018-05-25 | — | — |
| Boundary Scan | — | YES | YES | YES | YES | YES | — | — | YES | YES |
| CPU Family | — | CORTEX-M4 | CORTEX-M4 | CORTEX-M4 | CORTEX-M4 | CORTEX-M4 | CORTEX-M4 | — | CORTEX-M4 | CORTEX-M4 |
| DAC Channels | — | YES | YES | YES | YES | YES | YES | — | YES | NO |
| Format | — | FLOATING-POINT | FLOATING POINT | — | FLOATING POINT | FLOATING POINT | — | — | — | FLOATING-POINT |
| Integrated Cache | — | YES | YES | — | YES | YES | — | — | — | YES |
| JESD-30 Code | — | S-XQCC-N32 | S-XQCC-N32 | S-XQCC-N32 | S-XQCC-N32 | S-PQCC-N32 | S-XQCC-N32 | — | S-XQCC-N32 | S-XQCC-N32 |
| Low Power Mode | — | YES | YES | — | YES | YES | — | — | — | YES |
| Number of DMA Channels | — | 14 | 14 | 14 | 14 | 14 | — | — | 14 | 14 |
| Number of External Interrupts | — | 16 | 16 | — | 16 | 16 | — | — | — | 16 |
| Number of Serial I/Os | — | 3 | 4 | — | 5 | 4 | — | — | — | 3 |
| Number of Timers | — | 9 | 9 | 9 | 9 | 9 | — | — | 9 | 8 |
| On Chip Data RAM Width | — | 8 | 8 | — | 8 | 8 | — | — | — | 8 |
| On Chip Program ROM Width | — | 8 | 8 | 8 | 8 | 8 | 8 | — | 8 | 8 |
| Package Body Material | — | UNSPECIFIED | UNSPECIFIED | UNSPECIFIED | UNSPECIFIED | PLASTIC/EPOXY | UNSPECIFIED | — | UNSPECIFIED | UNSPECIFIED |
| Package Equivalence Code | — | LCC32,.2SQ,20 | LCC32,.2SQ,20 | — | LCC32,.2SQ,20 | LCC32,.2SQ,20 | — | — | — | LCC32,.2SQ,20 |
| RAM (bytes) | — | 65536 | 65536 | 65536 | 65536 | 65536 | 65536 | — | 65536 | 40960 |
| ROM (words) | — | 262144 | 131072 | 262144 | 262144 | 131072 | 131072 | — | 131072 | 131072 |
| ROM Programmability | — | FLASH | FLASH | FLASH | FLASH | FLASH | FLASH | — | FLASH | FLASH |
| Supply Current-Max | — | 9.8 mA | 100 mA | — | 9.7 mA | 10.3 mA | — | — | — | 7.8 mA |
| Technology | — | CMOS | CMOS | CMOS | CMOS | CMOS | — | — | CMOS | CMOS |
| Factory Lead Time | — | — | 12 Weeks | 12 Weeks | 12 Weeks | 12 Weeks | — | 12 Weeks | 12 Weeks | — |
| Temperature Grade | — | — | INDUSTRIAL | INDUSTRIAL | — | — | — | — | INDUSTRIAL | — |
| Time@Peak Reflow Temperature-Max (s) | — | — | 30 | — | — | NOT SPECIFIED | — | — | — | — |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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Quick Links
RISC Microcontroller, 32-Bit, FLASH, CORTEX-M4 CPU, 80MHz, CMOS, PQCC32
Why Look for Alternatives?
Finding alternatives for STM32L431KCU6 is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating STM32L431KCU6 replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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FAQ
What is equivalent to STM32L431KCU6?
Known equivalents for STM32L431KCU6 include STM32L432KCU6, STM32L431KBU6, STM32L431KCU6TR. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of STM32L431KCU6?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify STM32L431KCU6 alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.