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STMicroelectronics Electronic Components Datasheet

STM32G081KB Datasheet

Arm Cortex-M0+ 32-bit MCU

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STM32G081xB
Arm® Cortex®-M0+ 32-bit MCU, 128 KB Flash, 36 KB RAM,
4x USART, timers, ADC, DAC, comm. I/Fs, AES, RNG, 1.7-3.6V
Datasheet - production data
Features
Core: Arm® 32-bit Cortex®-M0+ CPU,
frequency up to 64 MHz
-40°C to 85°C/105°C/125°C operating
temperature
Memories
– 128 Kbytes of Flash memory with
protection and securable area
– 36 Kbytes of SRAM (32 Kbytes with HW
parity check)
CRC calculation unit
Reset and power management
– Voltage range: 1.7 V to 3.6 V
– Power-on/Power-down reset (POR/PDR)
– Programmable Brownout reset (BOR)
– Programmable voltage detector (PVD)
– Low-power modes:
Sleep, Stop, Standby, Shutdown
– VBAT supply for RTC and backup registers
Clock management
– 4 to 48 MHz crystal oscillator
– 32 kHz crystal oscillator with calibration
– Internal 16 MHz RC with PLL option (±1 %)
– Internal 32 kHz RC oscillator (±5 %)
Up to 60 fast I/Os
– All mappable on external interrupt vectors
– Multiple 5 V-tolerant I/Os
7-channel DMA controller with flexible mapping
12-bit, 0.4 µs ADC (up to 16 ext. channels)
– Up to 16-bit with hardware oversampling
– Conversion range: 0 to 3.6V
Two 12-bit DACs, low-power sample-and-hold
Two fast low-power analog comparators, with
programmable input and output, rail-to-rail
14 timers (two 128 MHz capable): 16-bit for
advanced motor control, one 32-bit and five 16-
bit general-purpose, two basic 16-bit, two low-
power 16-bit, two watchdogs, SysTick timer
Calendar RTC with alarm and periodic wakeup
from Stop/Standby/Shutdown
LQFP32
7 × 7 mm
LQFP48
7 × 7 mm
LQFP64
10 × 10 mm
UFQFPN28
4 × 4 mm
UFQFPN32
5 × 5 mm
UFQFPN48
7 × 7 mm
UFBGA64
5 × 5 mm
WLCSP25
2.3 × 2.5 mm
Communication interfaces
– Two I2C-bus interfaces supporting Fast-
mode Plus (1 Mbit/s) with extra current
sink, one supporting SMBus/PMBus and
wakeup from Stop mode
– Four USARTs with master/slave
synchronous SPI; two supporting ISO7816
interface, LIN, IrDA capability, auto baud
rate detection and wakeup feature
– One low-power UART
– Two SPIs (32 Mbit/s) with 4- to 16-bit
programmable bitframe, one multiplexed
with I2S interface
– HDMI CEC interface, wakeup on header
USB Type-C™ Power Delivery controller
True random number generator (RNG)
AES encryption with 128/256-bit key
Development support: serial wire debug (SWD)
96-bit unique ID
All packages ECOPACK 2 compliant
Table 1. Device summary
Reference
Part number
STM32G081xB
STM32G081RB, STM32G081CB,
STM32G081KB, STM32G081GB,
STM32G081EB
March 2020
This is information on a product in full production.
DS12231 Rev 3
1/134
www.st.com


STMicroelectronics Electronic Components Datasheet

STM32G081KB Datasheet

Arm Cortex-M0+ 32-bit MCU

No Preview Available !

Contents
Contents
STM32G081xB
1
2
3
2/134
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1 Arm® Cortex®-M0+ core with MPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2 Memory protection unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.3 Embedded Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.3.1 Securable area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.4 Embedded SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.5 Boot modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.6 Cyclic redundancy check calculation unit (CRC) . . . . . . . . . . . . . . . . . . . 16
3.7 Power supply management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.7.1 Power supply schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.7.2 Power supply supervisor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.7.3 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.7.4 Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.7.5 Reset mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.7.6 VBAT operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.8 Interconnect of peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.9 Clocks and startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.10 General-purpose inputs/outputs (GPIOs) . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.11 Direct memory access controller (DMA) . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.12 DMA request multiplexer (DMAMUX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.13 Interrupts and events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.13.1 Nested vectored interrupt controller (NVIC) . . . . . . . . . . . . . . . . . . . . . . 24
3.13.2 Extended interrupt/event controller (EXTI) . . . . . . . . . . . . . . . . . . . . . . 24
3.14 Analog-to-digital converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.14.1 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.15
3.14.2 Internal voltage reference (VREFINT) . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.14.3 VBAT battery voltage monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Digital-to-analog converter (DAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.16 Voltage reference buffer (VREFBUF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
DS12231 Rev 3


Part Number STM32G081KB
Description Arm Cortex-M0+ 32-bit MCU
Maker STMicroelectronics
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