4.5.4.2 High-Speed Analog Comparator (CMP)

• 6-bit DAC programmable reference generator output

• Up to five selectable comparator inputs; each input can be compared with any input by any polarity sequence

• Selectable interrupt on rising edge, falling edge, or either rising or falling edges of comparator output

• Comparator output supports:

• Sampled

• Windowed (ideal for certain PWM zero-crossing-detection applications

• Digitally filtered using external sample signal or scaled peripheral clock

• Two performance modes:

• Shorter propagation delay at the expense of higher power

• Low power, with longer propagation delay

• Operational in all MCU power modes except for VLLS0

4.5.4.3 12-Bit Digital-to-Analog Converter (DAC)

• 12-bit resolution

• Guaranteed 6-sigma monotonicity over input word

• High- and low-speed conversions

•

1 μs conversion rate for high speed, 2 μs for low speed

• Power-down mode

• Automatic mode allows the DAC to generate its own output waveforms including square, triangle, and sawtooth

• Automatic mode allows programmable period, update rate, and range

• DMA support

Timers

4.5.5.1 Timer/PWM (TPM)

• Selectable source clock

• Programmable prescaler

• 16-bit counter supporting free-running or initial/final value, and counting is up or up-down

• Input capture, output compare, and edge-aligned and center-aligned PWM modes

• Input capture and output compare modes

• Generation of hardware triggers

• DMA support for TPM events

4.5.5.2 Periodic Interrupt Timers (PITs)

• 2 general purpose interrupt timers

• 2 interrupt timers for triggering ADC conversions

• 32-bit counter resolution

• Clocked by bus clock frequency

• DMA support

4.5.5.3 Real-Time Clock (RTC)

• 32-bit seconds counter with 32-bit alarm

• 16-bit prescaler with compensation

• Register write protection

• Hard Lock requires MCU POR to enable write access

• Soft lock requires system reset to enable write/read access

4.5.5

Timers

KL14/KL15 Product Brief, Rev. 2, 6/2012

Freescale Semiconductor, Inc.

Preliminary

15

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