STM3220G-SK/IAR STMicroelectronics, STM3220G-SK/IAR Datasheet - Page 17
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STM3220G-SK/IAR
Manufacturer Part Number
STM3220G-SK/IAR
Description
DEV KIT STM32F207ZG KICKSTART
Manufacturer
STMicroelectronics
Series
IAR Kickstartr
Type
MCUr
Specifications of STM3220G-SK/IAR
Contents
Hardware, Software and Documentation
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
STM32F207
Other names
497-11404
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- Download datasheet (3Mb)
STM32F205xx, STM32F207xx
2.2.1
2.2.2
2.2.3
2.2.4
ARM
The ARM Cortex-M3 processor is the latest generation of ARM processors for embedded
systems. It was 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 response to interrupts.
The ARM Cortex-M3 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.
With its embedded ARM core, the STM32F205xx and STM32F207xx family is compatible
with all ARM tools and software.
Figure 1 shows the general block diagram of the STM32F20x family.
Memory protection unit
The memory protection unit (MPU) is used to separate the processing of tasks from the data
protection. The MPU can manage up to 8 protection areas that can all be further divided up
into 8 subareas. The protection area sizes are between 32 bytes and the whole 4 gigabytes
of addressable memory.
The memory protection unit is especially helpful for applications where some critical or
certified code has to be protected against the misbehavior of other tasks. It is usually
managed by an RTOS (real-time operating system). If a program accesses a memory
location that is prohibited by the MPU, the RTOS can detect it and take action. In an RTOS
environment, the kernel can dynamically update the MPU area setting, based on the
process to be executed.
The MPU is optional and can be bypassed for applications that do not need it.
Adaptive real-time memory accelerator (ART Accelerator™)
The ART Accelerator™ is a memory accelerator which is optimized for STM32 industry-
standard ARM
of the ARM Cortex-M3 over Flash memory technologies, which normally requires the
processor to wait for the Flash memory at higher operating frequencies.
To release the processor full 150 DMIPS performance at this frequency, the accelerator
implements an instruction prefetch queue and branch cache which increases program
execution speed from the 128-bit Flash memory. Based on CoreMark benchmark, the
performance achieved thanks to the ART accelerator is equivalent to 0 wait state program
execution from Flash memory at a CPU frequency up to 120 MHz.
Embedded Flash memory
The STM32F20x devices embed a 128-bit wide Flash memory of 128 Kbytes, 256 Kbytes,
512 Kbytes, 768 Kbytes or 1 Mbytes available for storing programs and data.
The devices also feature 512 bytes of OTP memory that can be used to store critical user
data such as Ethernet MAC addresses or cryptographic keys.
®
Cortex™-M3 core with embedded Flash and SRAM
®
Cortex™-M3 processors. It balances the inherent performance advantage
Doc ID 15818 Rev 6
Description
17/163
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