STM32L15xQC STM32L15xRC-A
STM32L15xVC-A STM32L15xZC
Ultra-low-power 32b 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 LQFP144 (20 20 mm)
UFBGA132
WLCSP64
LQFP100 (14 14 mm)
(7 7 mm)
(0.4 mm pitch)
-40C to 105C temperature range
LQFP64 (10 10 mm)
305 nA standby mode (3 wakeup pins)
Up to 116 fast I/Os (102 I/Os 5V tolerant), all
1.15 A standby mode + RTC
mappable on 16 external interrupt vectors
0.475 A stop mode (16 wakeup lines)
Memories
1.35 A stop mode + RTC 256 KB Flash with ECC
11 A Low-power run mode 32 KB RAM
8 KB of true EEPROM with ECC
230 A/MHz run mode
128-byte backup register
10 nA ultra-low I/O leakage
LCD driver (except STM32L151xC/C-A
8 s wakeup time
devices) up to 8x40 segments, contrast
Core: ARM Cortex -M3 32-bit CPU adjustment, blinking mode, step-up converter
From 32 kHz up to 32 MHz max Rich analog peripherals (down to 1.8V)
2x operational amplifiers
1.25 DMIPS/MHz (Dhrystone 2.1)
12-bit ADC 1 Msps up to 40 channels
Memory protection unit
12-bit DAC 2 ch with output buffers
Up to 23 capacitive sensing channels
2x ultra-low-power-comparators
(window mode and wake up capability)
CRC calculation unit, 96-bit unique ID
DMA controller 12x channels
Reset and supply management
9x peripheral communication interfaces
Low-power, ultrasafe BOR (brownout reset)
1x USB 2.0 (internal 48 MHz PLL)
with 5 selectable thresholds
3x USARTs
Ultra-low-power POR/PDR
Up to 8x SPIs (2x I2S, 3x 16 Mbit/s)
Programmable voltage detector (PVD)
2x I2Cs (SMBus/PMBus)
Clock sources
11x timers: 1x 32-bit, 6x 16-bit with up to 4
IC/OC/PWM channels, 2x 16-bit basic timers,
1 to 24 MHz crystal oscillator
2x watchdog timers (independent and window)
32 kHz oscillator for RTC with calibration
High Speed Internal 16 MHz factory-
Table 1. Device summary
trimmed RC (+/- 1%)
Reference Part numbers
Internal low-power 37 kHz RC
STM32L151QC STM32L151QCH6
Internal multispeed low-power 65 kHz to
STM32L151RC-A STM32L151RCT6A, STM32L151RCY6
4.2 MHz
STM32L151VC-A STM32L151VCT6A
STM32L151ZC STM32L151ZCT6
PLL for CPU clock and USB (48 MHz)
STM32L152QC STM32L152QCH6
Pre-programmed bootloader
STM32L152RC-A STM32L152RCT6A
STM32L152VC-A STM32L152VCT6A
USB and USART supported
STM32L152ZC STM32L152ZCT6
Serial wire debug, JTAG and trace
March 2016 DocID026119 Rev 6 1/134
This is information on a product in full production. www.st.comContents STM32L151xC/C-A STM32L152xC/C-A
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 (direct memory access) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.9 LCD (liquid crystal display) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.10 ADC (analog-to-digital converter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.10.1 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.10.2 Internal voltage reference (V ) . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
REFINT
3.11 DAC (digital-to-analog converter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.12 Operational amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.13 Ultra-low-power comparators and reference voltage . . . . . . . . . . . . . . . . 27
3.14 System configuration controller and routing interface . . . . . . . . . . . . . . . 27
3.15 Touch sensing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
2/134 DocID026119 Rev 6