LPC5410X datasheet(29/95 Pages) NXP

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LPC5410x

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Product data sheet

Rev. 2.11 — 19 September 2019

29 of 95

NXP Semiconductors

LPC5410x

32-bit ARM Cortex-M4/M0+ microcontroller

• Counter or timer operation.

• For each timer with pin connections, up to 4 32-bit capture channels that can take a

snapshot of the timer value when an input signal transitions. A capture event may also

optionally generate an interrupt.

• The timer and prescaler may be configured to be cleared on a designated capture

event. This feature permits easy pulse-width measurement by clearing the timer on

the leading edge of an input pulse and capturing the timer value on the trailing edge.

• Four 32-bit match registers that allow:

– Continuous operation with optional interrupt generation on match.

– Stop timer on match with optional interrupt generation.

– Reset timer on match with optional interrupt generation.

• For each timer with pin connections, up to 4 external outputs corresponding to match

registers with the following capabilities:

– Set LOW on match.

– Set HIGH on match.

– Toggle on match.

– Do nothing on match.

• PWM: for each timer with pin connections, up to 3 match outputs can be used as

single edge controlled PWM outputs.

7.18.2 State Configurable Timer/PWM (SCTimer/PWM)

The SCTimer/PWM (SCT0) allows a wide variety of timing, counting, output modulation,

and input capture operations. The inputs and outputs of the SCTimer/PWM are shared

with the capture and match inputs/outputs of the 32-bit general-purpose counter/timers.

The SCTimer/PWM can be configured as two 16-bit counters or a unified 32-bit counter. In

the two-counter case, in addition to the counter value the following operational elements

are independent for each half:

• State variable

• Limit, halt, stop, and start conditions

• Values of Match/Capture registers, plus reload or capture control values

In the two-counter case, the following operational elements are global to the SCT, but the

last three can use match conditions from either counter:

• Clock selection

• Inputs

• Events

• Outputs

• Interrupts

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