STMicroelectronics
Ultra-low-power Cortex-M4 MCU, 80 MHz, 256 KB Flash, 64 KB SRAM, USB FS + LCD driver, LQFP64
The STM32L433RCT6 is an ultra-low-power STM32L4 microcontroller with an 80 MHz Arm Cortex-M4 core with FPU, 256 KB Flash and 64 KB SRAM, crystal-less USB 2.0 full-speed device, CAN 2.0B, Quad-SPI, a 12-bit 5 Msps ADC and an integrated segment LCD controller, housed in a 10 x 10 mm LQFP64. Typical uses include smart meters, handheld medical and industrial instruments with LCD displays, and battery-operated sensors. Lead time is currently around 52 weeks with authorized distributor stock constrained, so buyers should secure allocation early. Cerametronics can source traceable stock on request.
Key Specifications
Verify against the original datasheet before quoting.
| Core / Speed | Arm Cortex-M4 with FPU, MPU, DSP instructions; up to 80 MHz |
|---|---|
| Memory | 256 KB Flash (single bank); 64 KB SRAM incl. 16 KB with hardware parity |
| Interfaces | USB 2.0 FS (crystal-less), 1x CAN 2.0B, 3x USART + 1x LPUART, 3x SPI, 1x Quad-SPI, 3x I2C (FM+), 1x SAI, SDMMC, SWPMI; LCD driver 8x40 / 4x44; 12-bit 5 Msps ADC |
| Supply Voltage | 1.71 V to 3.6 V (internal LDO); 1.05 V to 1.32 V on VDD12 with external SMPS |
| Package | LQFP64, 10 x 10 x 1.4 mm (suffix T) |
| Temperature | Grade 6: -40 to +85 °C ambient (TJ up to +105 °C); grade 3 variant: -40 to +125 °C ambient |
Market Status
Factory Backlog – Limited Channel Stock Factory lead time is currently around 52 weeks.
Quality & Traceability
Cerametronics is ISO 9001 certified and products are RoHS compliant, with counterfeit screening and full traceability on every shipment. A Certificate of Conformance is available on request. For allocation-sensitive or high-risk lots, independent third-party lab verification can be arranged — just flag it on your RFQ. Any lot that fails incoming inspection is quarantined and never shipped.
FAQ
What is the difference between STM32L433RCT6, STM32L433RCT3 and STM32L433RCT6P?
All three are 256 KB Flash LQFP64 parts. The 6 suffix is the -40 to +85 °C ambient grade and 3 is the -40 to +125 °C grade; T6P is configured for an external SMPS on VDD12 and needs a different power circuit, so it is not a plug-in replacement for the T6. Tape-and-reel parts carry a TR suffix with identical silicon.
Which STM32 parts can substitute for STM32L433RCT6?
STM32L443RCT6 is the same device with AES hardware encryption added and is pin-compatible. STM32L433RBT6 (128 KB Flash) and STM32L432 parts share the footprint with less memory; STM32L452RET6/RCT6 offers more Flash/SRAM in the same LQFP64 pinout but lacks the segment LCD driver, so LCD-based designs must verify peripheral mapping before switching.
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