TMS470R1B768

The TMS470R1B768(1) device is a member of the Texas Instruments (TI) TMS470R1x family of general- purpose16/32-bit reduced instruction set computer (RISC) microcontrollers. The B768 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 TMS470R1B768 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 B768 RISC core architecture offers solutions to these performance and cost demands while maintaining low power consumption.

The B768 device contains the following:
· ARM7TDMI 16/32-Bit RISC CPU
· TMS470R1x system module (SYS) with 470+ enhancements [including an interrupt expansion module (IEM)
and a 16-channel direct-memory access (DMA) controller]
· 768K-byte flash
· 48K-byte SRAM
· Zero-pin phase-locked loop (ZPLL) clock module
· Analog watchdog (AWD) timer
· Real-time interrupt (RTI) module
· Five serial peripheral interface (SPI) modules
· Two serial communications interface (SCI) modules
· Three high-end CAN controller (HECC) modules
· 10-bit multi-buffered analog-to-digital converter (MibADC) with 16 input channels
· High-end timer (HET) controlling 32 I/Os
· External clock prescale (ECP) module
· Up to 86 I/O pins and 1 input-only pin
The functions performed by the 470+ system module (SYS) include:
· Address decoding
· Memory protection
· Memory and peripherals bus supervision
· Reset and abort exception management
· Expanded interrupt capability with prioritization for all internal interrupt sources
· Device clock control
· Direct-memory access (DMA) and control
· Parallel signature analysis (PSA)

This data sheet includes device-specific information such as memory and peripheral select assignment, interrupt priority, and a device memory map. For a more detailed functional description of the SYS module, see the TMS470R1x System Module Reference Guide (literature number SPNU189). For a more detailed functional description of the IEM module, see the TMS470R1x Interrupt Expansion Module (IEM) Reference Guide (literature number SPNU211). And for a more detailed functional description of the DMA module, see the TMS470R1x Direct-Memory Access (DMA) Controller Reference Guide (literature number SPNU210). The B768 memory includes general-purpose SRAM supporting single-cycle read/write accesses in byte, half-word, and word modes.

The flash memory on this device is a nonvolatile, electrically erasable and programmable memory implemented with a 32-bit-wide data bus interface.The flash operates with a system clock frequency of up to 24 MHz. When in ipeline mode, the flash operates with a system clock frequency of up to 60 MHz. For more detailed information on the F05 devices flash, see the F05 flash section of this data sheet.