ST’s new leading-edge STM32 F-2 microcontroller series combines ST’s advanced 90nm process technology with the Company’s innovative Adaptive Real-Time memory accelerator (ART Accelerator™) to unleash the Cortex-M3 core’s maximum processing performance. The STM32 F-2 MCUs achieve leading-edge performance of 150 Dhrystone MIPS when executing code from Flash at 120MHz, which is the maximum performance possible from the Cortex-M3 processor at this frequency. The series also offers CoreMark-confirmed 188uA/MHz dynamic power consumption, when executing from Flash, equivalent to drawing 22.5mA at 120MHz. In addition to offering on-chip memory densities that are among the highest of any Cortex-M3 based MCUs available, the new series provides enhanced support for imaging, connectivity, security, audio and control applications.

For many applications, the STM32 F-2 MCUs offer the perfect balance between performance, dynamic power consumption and cost, which has been confirmed with the news that more than 20 of ST’s customers are currently ramping up manufacturing of new products enabled by this new STM32 family.

The addition of more than 30 new devices in the F-2 series brings the total number of STM32 microcontrollers to 180 pin- and software-compatible devices sharing a common pool of peripherals, and delivering the advanced performance, high efficiency and convenience of the industry-standard Cortex-M3 processor.

STM32 F-2 Series – Further Technical Details
Complementing the existing STM32 F-1 and L-1 series, while remaining fully pin-to-pin and software compatible, the STM32 F-2 MCU series is available in four variants, each providing designers with various memory density, package and peripheral options, combined with the performance and power advantages provided by 90nm process technology and the ART memory accelerator. The series also benefits from the extensive development tool and software ecosystem of the STM32 family, comprising numerous compilers and IDEs.

Industry-Leading Performance

• 150 DMIPS (Dhrystone MIPS) at 120MHz;
• CoreMark™-confirmed fastest Cortex-M3 microcontroller, at 120MHz, delivering 1.905 CoreMark/MHz (228.60 CoreMark at 120MHz) performance, executing from embedded Flash memory;
•  Seven-layer multi AHB bus matrix for seamless and efficient operation, even when several high-speed peripherals are operating simultaneously;
• Two separate blocks of SRAM located on the bus matrix allow simultaneous memory access from different bus masters;
• 16 DMA channels.

Power Efficiency

• CoreMark-confirmed 188uA/MHz dynamic power consumption, when executing from Flash, equivalent to drawing 22.5mA at 120MHz;
• Voltage range to further reduce power consumption – 1.65V to 3.6V for the WLCSP64 package, 1.8V to 3.6V for the other four packages;
• Advanced low-power modes and features allowing VBAT mode, allowing consumption of less than 1uA with RTC (Real-Time Clock) turned on, and less than 1uA with memory preservation of 4 Kbytes of battery-backed SRAM.

Advanced Peripherals

• Audio-class architecture, I2S and USB peripherals with advanced PLL and data-synchronization schemes;
• 528 bytes of OTP (One-Time-Programmable) memory, allowing storage of critical data, such as Ethernet MAC addresses or encryption keys;
• Parallel CMOS-camera sensor interface,
• Connectivity – up to two USB Full-Speed OTG interfaces (one supporting USB High Speed with dedicated DMA), 1 Ethernet MAC 10/100 with IEEE1588 PTP hardware support, two CAN 2.0B active, External Memory Interface running up to 60MHz and supporting Compact Flash, SRAM, PSRAM, NOR, NAND memories and LCD
• Control – Two motor-control timers, 12 general-purpose timers, two 32-bit timers, three 12-bit ADCs converting at 2-Msample/s, and a 12-bit DAC;
• Encryption – Crypto/Hash processor and Analog True Random Number Generator; Encryption block includes hardware acceleration for AES 128, 192, 256, Triple DES, HASH (MD5, SHA-1).

Packages

• LQFP64, LQFP100, LQFP144, UFBGA176, plus the WLCSP64 (less than 4 x 4mm) for applications where board space is limited

F-2 Series Variants

• STM32F205 devices provide from 128 Kbytes to 1 Mbytes of Flash, up to 128 kbytes of SRAM, a USB On-The-Go (OTG) full-speed/high-speed interface, and a choice of LQFP64, LQFP100, LQFP144 or WLCSP64 packages. These features add to core peripherals including multiple timers, ADCs and DACs, serial interfaces, two CAN2.0B ports, an LCD interface and an external memory interface running up to 60MHz and supporting Compact Flash, SRAM, PSRAM, NOR, and NAND memories. An RTC, CRC calculation unit and analog true random number generator are also integrated.
• STM32F207 adds another full-speed USB OTG interface, an Ethernet 10/100 MAC supporting both MII and RMII and with IEEE1588 Precise Time Protocol hardware support, and an 8- to 14-bit parallel camera interface supporting up to 27 Mbyte/s at27MHz or 48 Mbyte/s at 48MHz allowing connection of a CMOS camera sensor. The STM32F207 is available in LQFP100, LQFP144 and UFBGA176 packages.
• STM32F215 and STM32F217 series provide a cryptographic security processor featuring hardware acceleration for AES 128/192/256, Triple DES, and HASH (MD5, SHA-1) protocols. Available Flash memory densities for these devices are 512 Kbyte and 1 Mbyte.

Click here to download overview of STM32F-2 series

For more information, or details on the full range of STMicroelectronics products available from Anglia, please call +44 (0)1945 474747 or email info@anglia.com

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This news article was originally published in November 2010.