STM32F030R8 datasheet(12/88 Pages) STMICROELECTRONICS

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Functional overview

STM32F030x4 STM32F030x6 STM32F030x8

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DocID024849 Rev 1

Functional overview

3.1

ARM® CortexTM-M0 core with embedded Flash and SRAM

The ARM Cortex™-M0 processor is the latest generation of ARM processors for embedded

systems. It has been developed to provide a low-cost platform that meets the needs of MCU

implementation, with a reduced pin count and low-power consumption, while delivering

outstanding computational performance and an advanced system response to interrupts.

The ARM Cortex™-M0 32-bit RISC processor features exceptional code-efficiency,

delivering the high-performance expected from an ARM core in the memory size usually

associated with 8- and 16-bit devices.

The STM32F0xx family has an embedded ARM core and is therefore compatible with all

ARM tools and software.

Figure 1 shows the general block diagram of the device family.

3.2

Memories

The device has the following features:



Up to 8 Kbytes of embedded SRAM accessed (read/write) at CPU clock speed with 0

wait states and featuring embedded parity checking with exception generation for fail-

critical applications.



The non-volatile memory is divided into two arrays:

–

16 to 64 Kbytes of embedded Flash memory for programs and data

–

Option bytes

The option bytes are used to write-protect the memory (with 4 KB granularity) and/or

readout-protect the whole memory with the following options:

–

Level 0: no readout protection

–

Level 1: memory readout protection, the Flash memory cannot be read from or

written to if either debug features are connected or boot in RAM is selected

–

Level 2: chip readout protection, debug features (Cortex-M0 serial wire) and boot

in RAM selection disabled

3.3

Boot modes

At startup, the boot pin and boot selector option bit are used to select one of three boot

options:



Boot from User Flash



Boot from System Memory



Boot from embedded SRAM

The boot loader is located in System Memory. It is used to reprogram the Flash memory by

using USART on pins PA14/PA15 or PA9/PA10.

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