LPC4310 datasheet(84/145 Pages) NXP

84 / 145 page

LPC4350_30_20_10

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Objective data sheet

Rev. 2.1 — 23 September 2011

84 of 145

NXP Semiconductors

LPC4350/30/20/10

32-bit ARM Cortex-M4/M0 microcontroller

7.19.5.1

Features

• Internally resets chip if not periodically reloaded during the programmable time-out

period.

• Optional windowed operation requires reload to occur between a minimum and

maximum time period, both programmable.

• Optional warning interrupt can be generated at a programmable time prior to

watchdog time-out.

• Enabled by software but requires a hardware reset or a watchdog reset/interrupt to be

disabled.

• Incorrect feed sequence causes reset or interrupt if enabled.

• Flag to indicate watchdog reset.

• Programmable 24-bit timer with internal prescaler.

• Selectable time period from (Tcy(WDCLK)  256  4) to (Tcy(WDCLK)  224  4) in

multiples of Tcy(WDCLK)  4.

7.20 Analog peripherals

7.20.1 Analog-to-Digital Converter (ADC0/1)

7.20.1.1

Features

• 10-bit successive approximation analog to digital converter.

• Input multiplexing among 8 pins.

• Power-down mode.

• Measurement range 0 to VDDA.

• Sampling frequency up to 400 kSamples/s.

• Burst conversion mode for single or multiple inputs.

• Optional conversion on transition on ADCTRIG0 or ADCTRIG1 pins, combined timer

outputs 8 or 15, or the PWM output MCOA2.

• Individual result registers for each A/D channel to reduce interrupt overhead.

• DMA support.

7.20.2 Digital-to-Analog Converter (DAC)

7.20.2.1

Features

• 10-bit resolution

• Integral Non-Linearity (INL) <tbd>

• Differential Non-Linearity (DNL) <tbd>

• Monotonic by design (resistor string architecture)

• Controllable conversion speed

• Low power consumption

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