The TMS470R1VF689/VF688(1) devices are members of the Texas Instruments TMS470R1x family of general　purpose　16/32-bit reduced instruction set computer (RISC) microcontrollers. The VF68x microcontroller offers high performance utilizing the high-speed ARM7TDMI 16/32-bit RISC central processing unit (CPU), resulting in a high instruction throughput while maintaining greater code efficiency. The ARM7TDMI 16/32-bit RISC CPU views memory as a linear collection of bytes numbered upwards from zero. The TMS470R1VF68x utilizes the big-endian format where the most significant byte of a word is stored at the lowest numbered byte and the least significant byte at the highest numbered byte.
  

   High-end embedded control applications demand more performance from their controllers while maintaining
low costs. The VF68x RISC core architecture offers solutions to these performance and cost demands while
maintaining low power consumption.

The VF68x devices contain the following:
?? ARM7TDMI 16/32-Bit RISC CPU
?? TMS470R1x system module (SYS) with 470+ enhancements
?? 384K-byte Flash (VF689 only)
?? 256K-byte Flash (VF688 only)
?? 16K-byte SRAM (VF689 only)
?? 12K-byte SRAM (VF688 only)
?? Zero-pin phase-locked loop (ZPLL) clock module
?? Analog watchdog (AWD) timer
?? Enhanced real-time interrupt (RTI) module
?? Two serial peripheral interface (SPI) modules
?? Two serial communications interface (SCI) modules
?? Two standard CAN controllers (SCC)
?? Class II serial interface (C2SIb)
?? Three inter-integrated circuit (I2C) modules
?? 10-bit multi-buffered analog-to-digital converter (MibADC), with 12 input channels
?? High-end timer (HET) controlling 12 I/Os
?? External Clock Prescale (ECP)
?? Expansion Bus Module (EBM)
?? Up to 87 I/O pins and 1 input-only pin (PGE Suffix), up to 51 I/O pins and 1 input-only pin (PZ Suffix)

TMS470R1Vf689689 RISC FLASH MCU.pdf