16/32-Bit RISC Flash Microcontroller

The TMS470R1VF55BA 2) device is a member of the Texas Instruments (TI) TMS470R1x family of generalpurpose16/ 32-bit reduced instruction set computer (RISC) Microcontrollers The VF55BA 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 TMS470R1VF55BA 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 VF55BA RISC core architecture offers solutions to these performance and cost demands while maintaining low power consumption.
The VF55BA devices contain 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 controllers (HECC) modules 10-bit multi-buffered Analog-to-digital converter (MibADC) with 16 input channels High-end Timer lite (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 and control; and 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 VF55BA 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 pipeline 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 and the TMS470R1x F05 Flash Reference Guide (literature number SPNU213).
The VF55BA device has ten Communication interfaces: five SPIs, two SCIs, and three HECCs. The SPI provides a convenient method of serial interaction for high-speed Communications between similar shift-register type devices. The SCI is a full-duplex, serial I/O Interface intended for asynchronous Communication between the CPU and other peripherals using the standard Non-Return-to-Zero (NRZ) format. The HECC uses a serial, multimaster Communication protocol that efficiently supports distributed real-time control with robust Communication rates of up to 1 megabit per second (Mbps). The HECC is ideal for applications operating in noisy and harsh environments (e.g., automotive and industrial fields) that require reliable serial Communication or multiplexed wiring. For more detailed functional information on the SPI, SCI, and HECC, see the specific Reference Guides for these modules (literature numbers SPNU195, SPNU196, and SPNU197, respectively).
The HET is an advanced intelligent Timer that provides sophisticated Timing functions for real-time applications. The Timer is software-controlled, using a reduced instruction set, with a specialized Timer micromachine and an attached I/O port. The HET CAN be used for compare, capture, or general-purpose I/O. It is especially well suited for applications requiring multiple Sensor information and drive actuators with complex and accurate time pulses. The HET used in this device is the high-end Timer lite. It has fewer I/Os than the usual 32 in a standard HET. For more detailed functional information on the HET, see the TMS470R1x High-End Timer (HET) Reference Guide (literature number SPNU199).
The VF55BA device has a 10-bit-resolution, 16-channel sample-and-hold MibADC. The MibADC channels CAN be converted individually or CAN be grouped by software for sequential conversion sequences. There are three separate groupings, two of which are triggerable by an external event. Each sequence CAN be converted once when triggered or configured for continuous conversion mode. For more detailed functional information on the MibADC, see the TMS470R1x Multi-Buffered Analog-to-digital Converter (MibADC) Reference Guide (literature number SPNU206).
The zero-pin phase-locked loop (ZPLL) Clock module contains a phase-locked loop, a clock-monitor circuit, a clock-enable circuit, and a prescaler (with prescale values of 1-8). The function of the ZPLL is to multiply the external frequency reference to a higher frequency for internal use. The ZPLL provides ACLK to the system (SYS) module. The SYS module subsequently provides system Clock (SYSCLK), real-time interrupt Clock (RTICLK), CPU Clock (MCLK), and peripheral Interface Clock (ICLK) to all other VF55BA device modules. For more detailed functional information on the ZPLL, see the TMS470R1x Zero-Pin Phase-Locked Loop (ZPLL) Clock Module Reference Guide (literature number SPNU212).
The VF55BA device also has an external Clock prescaler (ECP) module that when enabled, outputs a continuous external Clock (ECLK) on a specified GIO pin. The ECLK frequency is a user-programmable ratio of the peripheral Interface Clock (ICLK) frequency. For more detailed functional information on the ECP, see the TMS470R1x External Clock Prescaler (ECP) Reference Guide (literature number SPNU202).
By Texas Instruments
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