This is information on a product in full production.
December 2022 DS12469 Rev 9 1/198
STM32L412xx
Ultra-low-power Arm
®
Cortex
®
-M4 32-bit MCU+FPU, 100DMIPS,
up to 128KB flash, 40KB SRAM, analog, ext. SMPS
Datasheet - production data
Features
Includes ST state-of-the-art patented
technology
• Ultra-low-power with FlexPowerControl
– 1.71 V to 3.6 V power supply
– -40 °C to 85/125 °C temperature range
– 300 nA in V
BAT
mode: supply for RTC and
32x32-bit backup registers
– 16 nA Shutdown mode (4 wakeup pins)
– 32 nA Standby mode (4 wakeup pins)
– 245 nA Standby mode with RTC
– 0.7 µA Stop 2 mode, 0.95 µA with RTC
– 79 µA/MHz run mode (LDO Mode)
–28 μA/MHz run mode (@3.3 V SMPS
Mode)
– Batch acquisition mode (BAM)
– 4 µs wakeup from Stop mode
– Brown out reset (BOR)
– Interconnect matrix
• Core: Arm
®
32-bit Cortex
®
-M4 CPU with FPU,
Adaptive real-time accelerator (ART
Accelerator™) allowing 0-wait-state execution
from flash memory, frequency up to 80 MHz,
MPU, 100DMIPS and DSP instructions
• Performance benchmark
– 1.25 DMIPS/MHz (Drystone 2.1)
– 273.55 CoreMark
®
(3.42 CoreMark/MHz @
80 MHz)
• Energy benchmark
– 442 ULPMark-CP
®
– 165 ULPMark-PP
®
• Clock Sources
– 4 to 48 MHz crystal oscillator
– 32 kHz crystal oscillator for RTC (LSE)
– Internal 16 MHz factory-trimmed RC (±1%)
– Internal low-power 32 kHz RC (±5%)
– Internal multispeed 100 kHz to 48 MHz
oscillator, auto-trimmed by LSE (better than
±0.25 % accuracy)
– Internal 48 MHz with clock recovery
– PLL for system clock
• Up to 52 fast I/Os, most 5 V-tolerant
• RTC with HW calendar, alarms and calibration
• Up to 12 capacitive sensing channels: support
touchkey, linear and rotary touch sensors
• 10x timers: 1x 16-bit advanced motor-control,
1x 32-bit and 2x 16-bit general purpose, 1x 16-
bit basic, 2x low-power 16-bit timers (available
in Stop mode), 2x watchdogs, SysTick timer
• Memories
– 128 KB single bank flash, proprietary code
readout protection
– 40 KB of SRAM including 8 KB with
hardware parity check
– Quad SPI memory interface with XIP
capability
• Rich analog peripherals (independent supply)
– 2x 12-bit ADC 5 Msps, up to 16-bit with
hardware oversampling, 200 µA/Msps
– 1x operational amplifier with built-in PGA
– 1x ultra-low-power comparator
• 12x communication interfaces
– USB 2.0 full-speed crystal less solution
with LPM and BCD
–3x I2C FM+(1 Mbit/s), SMBus/PMBus
– 3x USARTs (ISO 7816, LIN, IrDA, modem)
– 1x LPUART (Stop 2 wake-up)
– 2x SPIs (and 1x Quad SPI)
– IRTIM (Infrared interface)
LQFP32 (7x7 mm)
UFBGA64 (5x5 mm)
WLCSP36
UFQFPN32 (5x5 mm)
UFQFPN48 (7x7 mm)
LQFP64 (10x10 mm)
LQFP48 (7x7 mm)
(2.6x3.1 mm)
www.st.com
STM32L412xx
2/198 DS12469 Rev 9
• 14-channel DMA controller
• True random number generator
• CRC calculation unit, 96-bit unique ID
• Development support: serial wire debug
(SWD), JTAG, Embedded Trace Macrocell™
• All packages are ECOPACK2 compliant
Table 1. Device summary
Reference Part numbers
STM32L412xx
STM32L412CB, STM32L412KB, STM32L412RB, STM32L412TB
STM32L412C8, STM32L412K8, STM32L412R8, STM32L412T8
