The maximum operating temperature range for the LPC1837JBD144 is -40°C to +105°C, but this can be limited by the specific application and the PCB design.
The clock settings for the LPC1837JBD144 can be configured using the Clock Control Unit (CCU) registers. The CCU provides a flexible clock generation and distribution system that allows the user to configure the clock frequencies and sources for the various peripherals and domains.
The maximum current consumption of the LPC1837JBD144 depends on the operating frequency, voltage, and peripheral usage. According to the datasheet, the maximum current consumption is around 350 mA at 100 MHz and 3.3 V, but this can be reduced by using power-saving modes and optimizing the system design.
The ADC on the LPC1837JBD144 is a 12-bit successive approximation ADC with a maximum sampling rate of 1.4 Msamples/s. To use the ADC, the user needs to configure the ADC clock, select the ADC channel, and start the ADC conversion. The ADC result can then be read from the ADC register.
Yes, the LPC1837JBD144 can be used with an external crystal oscillator. The microcontroller has an internal oscillator that can be used as the clock source, but an external crystal oscillator can be used for more accurate clocking. The external crystal oscillator can be connected to the XTALIN and XTALOUT pins.
LPC1837JBD144 datasheet
by NXP Semiconductors
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