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SM470R1B1MHFQS датащи(PDF) 3 Page - Texas Instruments

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номер детали SM470R1B1MHFQS
подробное описание детали  16-/32-Bit RISC Flash Microcontroller
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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SM470R1B1MHFQS датащи(HTML) 3 Page - Texas Instruments

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SM470R1B1M-HT
www.ti.com
SPNS155I – SEPTEMBER 2009 – REVISED JUNE 2015
EBM
Up to 93 I/O pins
The functions performed by the 470+ system module (SYS) include:
Address decoding
Memory protection
Memory and peripherals bus supervision
Reset and abort exception management
Prioritization for all internal interrupt sources
Device clock control
Parallel signature analysis (PSA)
The enhanced RTI module on the B1M has the option to be driven by the oscillator clock. The DWD is a
25-bit resettable decrementing counter that provides a system reset when the watchdog counter expires.
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 (SPNU189).
The B1M 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 or 30 MHz, depending on the input voltage. When in pipeline mode, the flash operates with a
system clock frequency of up to 48 MHz or 60 MHz, depending on the input voltage. For more detailed
information on the flash, see Section 8.2.1.4.
The MSM and the JTAG security module prevent unauthorized access and visibility to on-chip memory,
thereby preventing reverse engineering or manipulation of proprietary code.
The B1M device has twelve communication interfaces: two SPIs, three SCIs, two HECCs, and five I2Cs.
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
realtime control with robust communication rates of up to 1 Mbps. These CAN peripherals are ideal for
applications operating in noisy and harsh environments (for example, industrial fields) that require reliable
serial communication or multiplexed wiring. The I2C module is a multimaster communication module
providing an interface between the B1M microcontroller and an I2C-compatible device through the I2C
serial bus. The I2C supports both 100 Kbps and 400 Kbps speeds. For more detailed functional
information on the SPI, SCI, and CAN peripherals, see the specific reference guides (SPNU195,
SPNU196, and SPNU197). For more detailed functional information on the I2C, see the TMS470R1x Inter-
Integrated Circuit (I2C) Reference Guide (SPNU223).
The HET is an advanced intelligent timer that provides sophisticated timing functions for realtime
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 (SPNU199).
The B1M HET peripheral contains the XOR-share feature. This feature allows two adjacent HET high-
resolution channels to be XORed together, making it possible to output smaller pulses than a standard
HET. For more detailed information on the HET XOR-share feature, see the TMS470R1x High-End Timer
(HET) Reference Guide (SPNU199).
Copyright © 2009–2015, Texas Instruments Incorporated
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