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TMS570LS0332PZ Datasheet(PDF) 79 Page - Texas Instruments |
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TMS570LS0332PZ Datasheet(HTML) 79 Page - Texas Instruments |
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79 / 110 page  N2HETx 3 4 2 1 TMS570LS0432, TMS570LS0332 www.ti.com SPNS186B – OCTOBER 2012 – REVISED JUNE 2015 7.4 Enhanced High-End Timer (N2HET) The N2HET 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 N2HET can be used for pulse width modulated outputs, capture or compare inputs, 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. 7.4.1 Features The N2HET module has the following features: • Programmable timer for input and output timing functions • Reduced instruction set (30 instructions) for dedicated time and angle functions • 128 words of instruction RAM protected by parity • User defined number of 25-bit virtual counters for timer, event counters and angle counters • 7-bit hardware counters for each pin allow up to 32-bit resolution in conjunction with the 25-bit virtual counters • Up to 19 pins usable for input signal measurements or output signal generation • Programmable suppression filter for each input pin with adjustable limiting frequency • Low CPU overhead and interrupt load • Efficient data transfer to or from the CPU memory with dedicated High-End-Timer Transfer Unit (HTU) • Diagnostic capabilities with different loopback mechanisms and pin status readback functionality 7.4.2 N2HET RAM Organization The timer RAM uses 4 RAM banks, where each bank has two port access capability. This means that one RAM address may be written while another address is read. The RAM words are 96-bits wide, which are split into three 32-bit fields (program, control, and data). 7.4.3 Input Timing Specifications The N2HET instructions PCNT and WCAP impose some timing constraints on the input signals. Figure 7-5. N2HET Input Capture Timings Copyright © 2012–2015, Texas Instruments Incorporated Peripheral Information and Electrical Specifications 79 Submit Documentation Feedback Product Folder Links: TMS570LS0432 TMS570LS0332 |
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