Specifications

1.3 Peripherals

The following peripherals are available on chip:

• Master SPI port with five select outputs

• Two UARTs with support for hardware or software flow control

• Three programmable Timer/Counters – all three support Pulse Width Modulation (PWM) capability, two have

capture/compare facility

• Two programmable Sleep Timers and a Tick Timer

• Two-wire serial interface (compatible with SMbus and I

C) supporting master and slave operation

• Four-wire digital audio interface (compatible with I²S)

• Slave SPI port for Intelligent peripheral mode (shared with digital I/O)

• Twenty-one digital I/O lines (multiplexed with peripherals such as timers and UARTs)

• Four channel, 12-bit, Analogue to Digital converter

• Two 12-bit Digital to Analogue converters

• Two programmable analogue comparators

• Internal temperature sensor and battery monitor

• Time Of Flight ranging engine

• Two low power pulse counters

• Random number generator

• Watchdog Timer and Voltage Brown-out

• Sample FIFO for digital audio interface or ADC/DAC

• JTAG hardware debug port

User applications access the peripherals using the Integrated Peripherals API. This allows applications to use a

tested and easily understood view of the peripherals allowing rapid system development.