Features
■ Includes ST state-of-the-art patented technology.
■ Ultra-low-power
■ 1.71 V to 3.6 V power supply
■ -40 °C to +105 °C temperature range
■ VBAT mode: supply for RTC, 32 x 32-bit backup registers
■ 1.6 μA Stop 3 mode with 8-Kbyte SRAM
■ 2.2 μA Stop 3 mode with full SRAM
■ 3.8 μA Stop 2 mode with 8-Kbyte SRAM
■ 4.5 μA Stop 2 mode with full SRAM
■ 9.5 μA/MHz Run mode @ 3.3 V (While(1) SMPS step-down converter mode)
■ 13 μA/MHz Run mode @ 3.3 V/48 MHz (CoreMark® SMPS step-down
■ converter mode)
■ 16 μA/MHz Run mode @ 3.3 V/96 MHz (CoreMark® SMPS step-down
■ converter mode)
■ Brownout reset (BOR) in all modes except shutdown Arm® 32-bit Cortex®-M33 CPU with TrustZone® and FPU
■ ART Accelerator
■ 8-Kbyte instruction cache allowing 0-wait-state execution from flash and external memories: frequency up to 96 MHz, MPU, 144 DMIPS and DSP instructions
■ Power management
■ Embedded regulator (LDO) and SMPS step-down converter supporting switch on-the-fly and voltage scaling
■ Benchmarks
■ 1.5 DMIPS/MHz (Dhrystone 2.1)
■ 387 CoreMark®(4.09 CoreMark®/MHz)
■ 500 ULPMark™-CP
■ 117 ULPMark™-CM
■ 202000 SecureMark™-TLS
■ Memories
■ 1-Mbyte flash memory with ECC, 2 banks read-while-write
■ 256 Kbytes of SRAM including 64 Kbytes with hardware parity check
■ OCTOSPI external memory interface supporting SRAM, PSRAM, NOR, NAND, and FRAM memories
■ Security and cryptography
■ Arm® TrustZone® and securable I/Os, memories, and peripherals LQFP48 (7 × 7 mm) LQFP64 (10 × 10 mm) LQFP100 (14 × 14 mm) UFBGA64 (5 × 5 mm) UFBGA100 (7 × 7 mm) FBGA UFQFPN32 (5 x 5 mm) UFQFPN48 (7 x 7 mm) WLCSP52, WLCSP68 (3.17 x 3.11 mm) Product summary STM32U385xx STM32U385CG, STM32U385KG, STM32U385RG, STM32U385VG Product label Ultra-low-power Arm® Cortex®-M33 32-bit MCU+TrustZone®+FPU, 144 DMIPS, 1 MB flash memory, 256 KB SRAM, SMPS, crypto STM32U385xx Datasheet DS14830 - Rev 2 - February 2025 For further information, contact your local STMicroelectronics sales office.