Dear visitor, you are looking for information on the latest STM32 devices STM32F105 and STM32F107. This article is more than just the press release, it links to datasheet, reference manual, development tools, pricing indication and more. Please have a look and check out the links too. 

STMicroelectronics Attacks New Markets for STM32 Family in Networked, Real-Time and Audio Applications

New microcontrollers combine USB OTG, Ethernet, CAN2.0B interfaces, and audio-class I2S interfaces, bringing scalable 32-bit family to extra applications

New STM32 Family Capabilities and preliminary Datasheet

Update:ST has confirmed full production availability of the STM32F105 and the STM32F107in a press release on June 22, 2009.

There are two product groups in the STM32 Connectivity Line, with the STM32F105 (Datasheet, June09) devices featuring USB OTG and CAN2.0B interfaces. The STM32F107 (Datasheet June09) group adds the Ethernet 10/100 MAC alongside the USB OTG and CAN2.0B peripherals. The integrated Ethernet MAC supports both MII and RMII, thereby requiring only an external PHY chip to implement a complete Ethernet transceiver. A single 25MHz crystal can be used to clock the entire device, including the Ethernet and USB OTG peripherals. The MCU can also generate a 25 or 50MHz output which can be used to clock the external Ethernet PHY, thereby saving an additional crystal and space on the PCB. There is a new Reference Manual or User Manual for the STM32F105 and STM32F107 from June 2009.

As part of the audio features, there are two I2S interfaces, which can be operated in either master or slave mode and can be operated as inputs or outputs with 16-bit or 32-bit resolution. Audio sampling frequencies from 8 to 96kHz are supported. By leveraging the MCU’s high processing power, developers can also implement the audio codec in software to eliminate external component

The USB OTG peripheral can also be used to allow upgrading of software in the field by plugging in a USB mass storage device such as a pen drive, and upgrades can also be downloaded via the Ethernet connection. This allows easier management and maintenance of large networks of systems such as remote controllers or Point-of-Sale equipment.

Leveraging the STM32 architecture

As well as the new peripherals supporting enhanced connectivity, the STM32 Connectivity Line also shares standard peripheral functions with other STM32 devices. This commonality enhances flexibility and allows developers to re-use software in multiple designs. Implemented using these blocks are 10 timers, two 12-bit 1-Msample/s ADCs (2-Msample/s in interleaved mode), two 12-bit DACs, two I2C interfaces, five USARTs and three SPI ports. The peripherals are supported with a total of 12 DMA channels, and there is also a CRC calculation unit supporting 96-bit unique identification, common to other STM32 variants.

The STM8S family of has a couple new members and offers software compatible peripherals.

The new devices also benefit from the low operating voltage and power-saving features of the STM32 family. The operating voltage range of 2.0V to 3.6V is compatible with popular battery technologies such as Li-ion and NiMH, and there is a dedicated Vbat pin supporting battery operation. Current draw is only 27mA at 72MHz when executing from Flash, and there are four low-power modes that reduce current draw to as little as 2 uAs. Fast start-up from low-power modes also saves power; starting-up using the STM32’s internally-generated 8MHz signal wakes the device from STOP mode in less than 6 usec.

Memory and Package Options

The STM32F105 and STM32F107 Connectivity Line MCUs join the STM32 Access Line, USB Access Line and Performance Line families already announced, and share the 72MHz core frequency of the Performance Line. Embedded memory densities are from 64Kbyte to 256Kbyte of Flash and 20Kbyte to 64Kbyte of embedded SRAM. Package options are LQFP64, LQFP100 and LFBGA100. Consistent pin assignments from one package to another combine with the STM32 platform philosophy allowing developers to re-optimize functions, memory, performance, and number of pins through device selection, to satisfy individual applications with minimal other hardware changes required.

Development Tools for the STM32F105 and STM32F107

There are several IDEs ready to support the new STM32 devices. ARM / Keil, IAR and Raisonance offer software support and soon to come also evaluation boards. The Primer2, which has been the most successful evaluation tool for the STM32F103 can also be used to get started with the STMF105.

New pricing information from Press release June 2009. The STM32F105 with 64Kbyte, 128Kbyte or 256Kbyte of embedded Flash, and the STM32F107 with 128Kbyte or 256Kbyte, are available immediately in LQFP64 or LQFP100 packages. Prices are from $2.90 in the 64Kbyte LQFP64 package up to $4.92 for 256Kbyte devices in the LQFP100, for quantities of 10,000 units

Older information from March 2009 press release: The STM32F105 and STM32F107 Connectivity Line families are currently sampling to lead customers, and devices are priced from $3.28 in the 64-Kbyte LQFP64 package and $4.92 for 256-Kbyte devices in the LQFP100, for quantities of 10,000 units.

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