Datasheet

LPC15XX All information provided in this document is subject to legal disclaimers. © NXP B.V. 2014. All rights reserved.
Product data sheet Rev. 1 — 19 February 2014 34 of 99
NXP Semiconductors
LPC15xx
32-bit ARM Cortex-M3 microcontroller
8.22.2 Timer controlled subsystem
The timers, the analog components, and the DMA can be configured to form a subsystem
that can run independently of the main processor under the control of the SCTs and any
events that are generated by the A/D converters, the comparators, the SCT output
themselves, or the external pins. A/D conversions can be triggered by the timer outputs,
the comparator outputs or by events from external pins. Data can be transferred from the
ADCs to memory using the DMA controller, and the DMA transfers can be triggered by the
ADCs, the comparator outputs, or by the timer outputs.
For an overview of the subsystem, see Figure 13 “
Subsystem with timers, switch matrix,
DMA, and analog components”.
Fig 12. PWM-Analog subsystem
INPUT MUX
SWITCH MATRIX
SWITCH MATRIX
TEMP SENSOR
VDDA DIVIDER
VOLTAGE
REFERENCE
TRIGGER
ADC0/ADC1
ANALOG IN
INTERRUPTS
ACMP0
ACMP1
ACMP2
ACMP3
OUTPUTS
SCT IPU
ANALOG IN
TIMER0
MATCH/
MATCHRELOAD
SCT0
OUTPUTS
TIMER1
MATCH/
MATCHRELOAD
SCT1
OUTPUTS
TIMER2
MATCH/
MATCHRELOAD
SCT2
OUTPUTS
TIMER3
MATCH/
MATCHRELOAD
SCT3
OUTPUTS
8 x PWM OUT
8 x PWM OUT
6 x PWM OUT
6 x PWM OUT
SCT0/1/2/3
digital signal from/to pins
analog signal from/to pins
digital signal internal
analog signal internal
analog peripheral
digital peripheral
THRESHOLD CROSSING
aaa-010873
4