This is information on a product in full production.
March 2020 DS12766 Rev 2 1/93
STM32G070CB/KB/RB
Arm
®
Cortex
®
-M0+ 32-bit MCU, 128 KB Flash, 36 KB RAM,
4x USART, timers, ADC, comm. I/Fs, 2.0-3.6V
Datasheet - production data
Features
Core: Arm
®
32-bit Cortex
®
-M0+ CPU,
frequency up to 64 MHz
-40°C to 85°C operating temperature
Memories
– 128 Kbytes of Flash memory with
protection
– 36 Kbytes of SRAM (32 Kbytes with HW
parity check)
CRC calculation unit
Reset and power management
– Voltage range: 2.0 V to 3.6 V
– Power-on/Power-down reset (POR/PDR)
– Low-power modes:
Sleep, Stop, Standby
–V
BAT
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
– Internal 32 kHz RC oscillator (±5 %)
Up to 59 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
11 timers: 16-bit for advanced motor control,
five 16-bit general-purpose, two basic 16-bit,
two watchdogs, SysTick timer
Calendar RTC with alarm and periodic wakeup
from Stop/Standby
Communication interfaces
–Two I
2
C-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
– Two SPIs (32 Mbit/s) with 4- to 16-bit
programmable bitframe, one multiplexed
with I
2
S interface
Development support: serial wire debug (SWD)
All packages ECOPACK
2 compliant
LQFP64 10
×
10 mm
LQFP48 7
×
7mm
LQFP32 7
×
7mm
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Contents STM32G070CB/KB/RB
2/93 DS12766 Rev 2
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 Arm
®
Cortex
®
-M0+ core with MPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2 Memory protection unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Embedded Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.4 Embedded SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.5 Boot modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.6 Cyclic redundancy check calculation unit (CRC) . . . . . . . . . . . . . . . . . . . 14
3.7 Power supply management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.7.1 Power supply schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.7.2 Power supply supervisor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.7.3 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.7.4 Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.7.5 Reset mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.7.6 VBAT operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.8 Interconnect of peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.9 Clocks and startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.10 General-purpose inputs/outputs (GPIOs) . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.11 Direct memory access controller (DMA) . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.12 DMA request multiplexer (DMAMUX) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.13 Interrupts and events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.13.1 Nested vectored interrupt controller (NVIC) . . . . . . . . . . . . . . . . . . . . . . 20
3.13.2 Extended interrupt/event controller (EXTI) . . . . . . . . . . . . . . . . . . . . . . 21
3.14 Analog-to-digital converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.14.1 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.14.2 Internal voltage reference (V
REFINT
) . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.14.3 V
BAT
battery voltage monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.15 Timers and watchdogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.15.1 Advanced-control timer (TIM1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.15.2 General-purpose timers (TIM3, 14, 15, 16, 17) . . . . . . . . . . . . . . . . . . . 23
