Document
STM32L15xQC STM32L15xRC-A STM32L15xVC-A STM32L15xZC
Ultra-low-power 32-bit MCU Arm®-based Cortex®-M3, 256KB Flash, 32KB SRAM, 8KB EEPROM, LCD, USB, ADC, DAC
Datasheet - production data
Features
• Ultra-low-power platform – 1.65 V to 3.6 V power supply – -40°C to 105°C temperature range – 305 nA standby mode (3 wakeup pins) – 1.15 µA standby mode + RTC – 0.475 µA stop mode (16 wakeup lines) – 1.35 µA stop mode + RTC – 11 µA Low-power run mode – 230 µA/MHz run mode – 10 nA ultra-low I/O leakage – 8 µs wakeup time
• Core: Arm® Cortex®-M3 32-bit CPU – From 32 kHz up to 32 MHz max – 1.25 DMIPS/MHz (Dhrystone 2.1) – Memory protection unit
• Up to 23 capacitive sensing channels
• CRC calculation unit, 96-bit unique ID
• Reset and supply management – Low-power, ultrasafe BOR (brownout reset) with 5 selectable thresholds – Ultra-low-power POR/PDR – Programmable voltage detector (PVD)
• Clock sources – 1 to 24 MHz crystal oscillator – 32 kHz oscillator for RTC with calibration – High Speed Internal 16 MHz factorytrimmed RC (+/- 1%) – Internal low-power 37 kHz RC – Internal multispeed low-power 65 kHz to 4.2 MHz – PLL for CPU clock and USB (48 MHz)
• Pre-programmed bootloader – USB and USART supported
• Serial wire debug, JTAG and trace
LQFP144 (20 × 20 mm) LQFP100 (14 × 14 mm) LQFP64 (10 × 10 mm)
UFBGA132 (7 × 7 mm)
WLCSP64 (0.4 mm pitch)
• Up to 116 fast I/Os (102 I/Os 5V tolerant), all mappable on 16 external interrupt vectors
• Memories – 256 Kbytes of Flash memory with ECC – 32 Kbytes of RAM – 8 Kbytes of true EEPROM with ECC – 128-byte backup register
• LCD driver (except STM32L151xC/C-A devices) up to 8x40 segments, contrast adjustment, blinking mode, step-up converter
• Rich analog peripherals (down to 1.8V) – 2x operational amplifiers – 12-bit ADC 1 Msps up to 40 channels – 12-bit DAC 2 ch with output buffers – 2x ultra-low-power-comparators (window mode and wake up capability)
• DMA controller 12x channels
• 9x peripheral communication interfaces – 1x USB 2.0 (internal 48 MHz PLL) – 3x USARTs – Up to 8x SPIs (2x I2S, 3x 16 Mbit/s) – 2x I2Cs (SMBus/PMBus)
• 11x timers: 1x 32-bit, 6x 16-bit with up to 4 IC/OC/PWM channels, 2x 16-bit basic timers, 2x watchdog timers (independent and window)
September 2021
This is information on a product in full production.
DS10262 Rev 8
1/134
www.st.com
Reference
STM32L151QC STM32L151RC-A STM32L151VC-A STM32L151ZC
STM32L152QC STM32L152RC-A STM32L152VC-A STM32L152ZC
STM32L151xC/C-A STM32L152xC/C-A
Table 1. Device summary
Part numbers
STM32L151QCH6 STM32L151RCT6A, STM32L151RCY6 STM32L151VCT6A STM32L151ZCT6
STM32L152QCH6 STM32L152RCT6A STM32L152VCT6A STM32L152ZCT6
2/134
DS10262 Rev 8
STM32L151xC/C-A STM32L152xC/C-A
Contents
Contents
1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1 Device overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.2 Ultra-low-power device continuum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.1 Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.2 Shared peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.3 Common system strategy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2.4 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3
Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.2 Arm® Cortex®-M3 core with MPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.3 Reset and supply management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3.1 Power supply schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3.2 Power supply supervisor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3.3 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3.4 Boot modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.4 Clock management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.5 Low-power real-time clock and backup registers . . . . . . . . . . . . . . . . . . . 23
3.6 GPIOs (general-purpose inputs/outputs) . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.7 Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.8 DMA (dir.