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TLE9861QXA20 Datasheet(PDF) 55 Page - Infineon Technologies AG |
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TLE9861QXA20 Datasheet(HTML) 55 Page - Infineon Technologies AG |
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55 / 122 page  Data Sheet 55 Rev. 1.0, 2015-04-30 TLE9861QXA20 Timer2 and Timer21 16 Timer2 and Timer21 16.1 Features • 16-bit auto-reload mode – selectable up or down counting • One channel 16-bit capture mode 16.2 Introduction The timer modules are general-purpose 16-bit timers. Timer 2/21 can function as a timer or counter in each of its modes. As a timer, it counts with an input clock of f PCLK/12 (if prescaler is disabled). As a counter, Timer 2 counts 1-to-0 transitions on pin T2. In the counter mode, the maximum resolution for the count is f PCLK/24 (if prescaler is disabled). 16.2.1 Timer2 and Timer21 Modes Overview Table 11 Timer2 and Timer21 Modes Mode Description Auto-reload Up/Down Count Disabled • Count up only • Start counting from 16-bit reload value, overflow at FFFFH • Reload event configurable for trigger by overflow condition only, or by negative/positive edge at input pin T2EX as well • Programmable reload value in register RC2 • Interrupt is generated with reload events. Auto-reload Up/Down Count Enabled • Count up or down, direction determined by level at input pin T2EX • No interrupt is generated • Count up – Start counting from 16-bit reload value, overflow at FFFFH – Reload event triggered by overflow condition – Programmable reload value in register RC2 • Count down – Start counting from FFFFH, underflow at value defined in register RC2 – Reload event triggered by underflow condition – Reload value fixed at FFFFH Channel capture • Count up only • Start counting from 0000H, overflow at FFFFH • Reload event triggered by overflow condition • Reload value fixed at 0000H • Capture event triggered by falling/rising edge at pin T2EX • Captured timer value stored in register RC2 • Interrupt is generated by reload or capture events |
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