To meet a broader range of low cost applications in factory automation and point of sale designs with wide memory variations, STMicroelectronics has broadened and deepened its STR710F family of 32-bit ARM-based flash microcontrollers.
The new devices include 64-kbyte Flash versions of both the USB (STR711) and the CAN interface (STR712) devices. Both retain the 16-kbyte data-Flash memory of other family members and include 16 kbytes of RAM. They are available in a 64-pin TQFP64 package.
The new STR715 is a lower-cost 'naked' MCU with 64 kbytes of code Flash memory, 16 kbytes of data Flash and 16 kbytes of RAM, but with no USB or CAN module. It is available in a TQFP64 package and specifically addresses small-footprint,low-cost applications such as industrial systems and consumer appliances that need a versatile and high-performance processor, but not USB or CAN.
The company has also doubled the on-chip RAM of all of the mid-range, 128-kbyte Flash versions in the STR710F family from 16 to 32 kbytes, optimizing the RAM/Flash balance of these devices, to minimize any memory constraints during code development.
Devices are now available with 256 kbytes of code Flash with 64 kbytes of RAM, 128 kbytes of Flash with 32 kbytes of RAM, and 64 kbytes of Flash with 16 kbytes of RAM. They all include 16 kbytes of data Flash memory.
Package options include the low-pin-count TQFP64, and a 144-pin TQFP144 with external memory bus. Development tools include an ARM RealView Developer Kit targeted specifically at ST's STR7 family.
All of the new MCUs are available now in sample quantities, and will enter volume production by the end of Q2 2005. Pricing is about $5.50 each in quantities of 10,000 for the STR711 and STR712 and $4.60 each for the STR715.