STM32L071KBT6TR datasheet, PDF

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STM32L071KBT6TR: DescriptionARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M0+ MCU with 128-Kbytes Flash, 32 MHz CPU; Categorysemiconductor The embedded processor and controller; File Size2MB，144 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

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ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M0+ MCU with 128-Kbytes Flash, 32 MHz CPU

STM32L071KBT6TR Parametric

Parameter Name	Attribute value
Product Attribute	Attribute Value
Manufacturer	STMicroelectronics
Product Category	ARM Microcontrollers - MCU
Package / Case	LQFP-32
Factory Pack Quantity	2400

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STM32L071x8 STM32L071xB

STM32L071xZ

Access line ultra-low-power 32-bit MCU Arm

-based Cortex

-M0+,

up to 192KB Flash, 20KB SRAM, 6KB EEPROM, ADC

Datasheet

production data

Features



Ultra-low-power platform

– 1.65 V to 3.6 V power supply

–

-40

to 125 °C temperature range

– 0.29 µA Standby mode (3 wakeup pins)

– 0.43 µA Stop mode (16 wakeup lines)

– 0.86 µA Stop mode + RTC + 20 KB RAM

retention

– Down to 93 µA/MHz in Run mode

– 5 µs wakeup time (from Flash memory)

– 41 µA 12-bit ADC conversion at 10 ksps

Core: Arm

32-bit Cortex

-M0+ with MPU

– From 32 kHz up to 32 MHz max.

– 0.95 DMIPS/MHz

Memories

– Up to 192 KB Flash memory with ECC(2 banks

with read-while-write capability)

– 20 KB RAM

– 6 KB of data EEPROM with ECC

– 20-byte backup register

– Sector protection against R/W operation

Up to 84 fast I/Os (78 I/Os 5V tolerant)

Reset and supply management

– Ultra-safe, low-power BOR (brownout reset)

with 5 selectable thresholds

– Ultra-low-power POR/PDR

– Programmable voltage detector (PVD)

Clock sources

– 1 to 25 MHz crystal oscillator

– 32 kHz oscillator for RTC with calibration

– High speed internal 16 MHz factory-trimmed RC

(+/- 1%)

– Internal low-power 37 kHz RC

– Internal multispeed low-power 65 kHz to

4.2 MHz RC

– PLL for CPU clock

Pre-programmed bootloader

– USART, I2C, SPI supported

Development support

– Serial wire debug supported

UFQFPN32

5x5 mm

UFBGA100

7x7 mm

LQFP32 7x7 mm

LQFP48 7x7 mm

LQFP64 10x10 mm

LQFP100 14x14 mm

UFBGA64

TFBGA64

5x5mm

WLCSP49

(3.294x3.258 mm)



Rich Analog peripherals

– 12-bit ADC 1.14 Msps up to 16 channels (down

to 1.65 V)

– 2x ultra-low-power comparators (window mode

and wake up capability, down to 1.65 V)

7-channel DMA controller, supporting ADC, SPI,

I2C, USART, Timers

Up to 10x peripheral communication interfaces

– 4x USART (2 with ISO 7816, IrDA), 1x UART

(low power)

– Up to 6x SPI 16 Mbits/s

– 3x I2C (2 with SMBus/PMBus)

11x timers: 2x 16-bit with up to 4 channels, 2x 16-bit

with up to 2 channels, 1x 16-bit ultra-low-power

timer, 1x SysTick, 1x RTC, 2x 16-bit basic, and 2x

watchdogs (independent/window)

CRC calculation unit, 96-bit unique ID

All packages are ECOPACK

Table 1. Device summary

Reference

Part number

STM32L071V8, STM32L071K8,

STM32L071C8

STM32L071VB, STM32L071RB,

STM32L071CB, STM32L071KB

STM32L071VZ, STM32L071RZ,

STM32L071CZ, STM32L071KZ

STM32L071x8

STM32L071xB

STM32L071xZ



May 2018

This is information on a product in full production.

DS10690 Rev 5

1/144

www.st.com

Contents

STM32L071xx

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1

2.2

Device overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Ultra-low-power device continuum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

3.1

3.2

3.3

3.4

Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Interconnect matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Arm® Cortex®-M0+ core with MPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Reset and supply management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.4.1

3.4.2

3.4.3

Power supply schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Power supply supervisor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

3.5

3.6

3.7

3.8

3.9

3.10

3.11

3.12

3.13

3.14

Clock management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Low-power real-time clock and backup registers . . . . . . . . . . . . . . . . . . . 25

General-purpose inputs/outputs (GPIOs) . . . . . . . . . . . . . . . . . . . . . . . . . 25

Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Boot modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Direct memory access (DMA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Analog-to-digital converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

3.12.1

Internal voltage reference (V

REFINT

) . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Ultra-low-power comparators and reference voltage . . . . . . . . . . . . . . . . 28

Timers and watchdogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

3.14.1

3.14.2

3.14.3

3.14.4

3.14.5

3.14.6

General-purpose timers (TIM2, TIM3, TIM21 and TIM22) . . . . . . . . . . . 29

Low-power Timer (LPTIM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Basic timer (TIM6, TIM7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

SysTick timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Independent watchdog (IWDG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Window watchdog (WWDG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.15

Communication interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2/144

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STM32L071xx

3.15.1

3.15.2

3.15.3

3.15.4

Contents

I2C bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Universal synchronous/asynchronous receiver transmitter (USART) . . 32

Low-power universal asynchronous receiver transmitter (LPUART) . . . 32

Serial peripheral interface (SPI)/Inter-integrated sound (I2S) . . . . . . . . 33

3.16

3.17

Cyclic redundancy check (CRC) calculation unit . . . . . . . . . . . . . . . . . . . 33

Serial wire debug port (SW-DP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Memory mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

6.1

Parameter conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

6.1.1

6.1.2

6.1.3

6.1.4

6.1.5

6.1.6

6.1.7

Minimum and maximum values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Typical values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Typical curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Loading capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Pin input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Power supply scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Current consumption measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

6.2

6.3

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

6.3.1

6.3.2

6.3.3

6.3.4

6.3.5

6.3.6

6.3.7

6.3.8

6.3.9

6.3.10

6.3.11

6.3.12

6.3.13

6.3.14

6.3.15

General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Embedded reset and power control block characteristics . . . . . . . . . . . 61

Embedded internal reference voltage . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Supply current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Wakeup time from low-power mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

External clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Internal clock source characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

PLL characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Memory characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

EMC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Electrical sensitivity characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

I/O current injection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

I/O port characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

NRST pin characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

12-bit ADC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

DS10690 Rev 5

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STM32L071xx

List of tables

Table 1.

Table 2.

Table 3.

Table 4.

Table 5.

Table 6.

Table 7.

Table 8.

Table 9.

Table 10.

Table 11.

Table 12.

Table 13.

Table 14.

Table 15.

Table 16.

Table 17.

Table 18.

Table 19.

Table 20.

Table 21.

Table 22.

Table 23.

Table 24.

Table 25.

Table 26.

Table 27.

Table 28.

Table 29.

Table 30.

Table 31.

Table 32.

Table 33.

Table 34.

Table 35.

Table 36.

Table 37.

Table 38.

Table 39.

Table 40.

Table 41.

Table 42.

Table 43.

Table 44.

Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Ultra-low-power STM32L071xx device features and peripheral counts . . . . . . . . . . . . . . . 12

Functionalities depending on the operating power supply range . . . . . . . . . . . . . . . . . . . . 16

CPU frequency range depending on dynamic voltage scaling . . . . . . . . . . . . . . . . . . . . . . 17

Functionalities depending on the working mode

(from Run/active down to standby) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

STM32L0xx peripherals interconnect matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Temperature sensor calibration values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Internal voltage reference measured values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Timer feature comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Comparison of I2C analog and digital filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

STM32L071xx I

C implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

USART implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

SPI/I2S implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Legend/abbreviations used in the pinout table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

STM32L071xxx pin definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Alternate functions port A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Alternate functions port B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Alternate functions port C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Alternate functions port D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Alternate functions port E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Alternate functions port H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Voltage characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Current characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Thermal characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

General operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Embedded reset and power control block characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . 61

Embedded internal reference voltage calibration values . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Embedded internal reference voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Current consumption in Run mode, code with data processing running from



Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Current consumption in Run mode vs code type,



code with data processing running from Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Current consumption in Run mode, code with data processing running from RAM . . . . . . 66

Current consumption in Run mode vs code type,



code with data processing running from RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Current consumption in Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Current consumption in Low-power run mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Current consumption in Low-power sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70

Typical and maximum current consumptions in Stop mode . . . . . . . . . . . . . . . . . . . . . . . . 71

Typical and maximum current consumptions in Standby mode . . . . . . . . . . . . . . . . . . . . . 72

Average current consumption during Wakeup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Peripheral current consumption in Run or Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Peripheral current consumption in Stop and Standby mode . . . . . . . . . . . . . . . . . . . . . . . 76

Low-power mode wakeup timings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

High-speed external user clock characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Low-speed external user clock characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

HSE oscillator characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

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STM32L071KBT6TR Related Products

	STM32L071KBT6TR	STM32L071KZU6	STM32L071KBT6	STM32L071RBT7	STM32L071C8T7	STM32L071VBT6	STM32L071K8U6	STM32L071KBU3TR	STM32L071V8T6TR
Description	ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M0+ MCU with 128-Kbytes Flash, 32 MHz CPU	ARM Microcontrollers - MCU	ARM Microcontrollers - MCU	ARM Microcontrollers - MCU 16/32-BITS MICROS	ARM Microcontrollers - MCU 16/32-BITS MICROS	ARM Microcontrollers - MCU 16/32-BITS MICROS	ARM Microcontrollers - MCU 16/32-BITS MICROS	ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M0+ MCU with 128-Kbytes Flash, 32 MHz CPU	ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M0+ MCU with 64-Kbytes Flash, 32 MHz CPU
Product Attribute	Attribute Value	-	Attribute Value	Attribute Value	Attribute Value	-	-	Attribute Value	Attribute Value
Manufacturer	STMicroelectronics	-	STMicroelectronics	STMicroelectronics	STMicroelectronics	-	-	STMicroelectronics	STMicroelectronics
Product Category	ARM Microcontrollers - MCU	-	ARM Microcontrollers - MCU	ARM Microcontrollers - MCU	ARM Microcontrollers - MCU	-	-	ARM Microcontrollers - MCU	ARM Microcontrollers - MCU
Factory Pack Quantity	2400	-	1500	960	1500	-	-	3000	1000

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