OLIMEX LPC2478-STK, User Manual, Page: 4 / 20

- USB 2.0 full-speed dual-port device/host/OTG controller with
on-chip PHY and associated DMA controller.
- Four UARTs with fractional baud rate generation, one with
modem control I/O, one with IrDA support, all with FIFO.
- CAN controller with two channels.
- SPI controller.
- Two SSP controllers, with FIFO and multi-protocol capabilities.
One is an alternate for the SPI port, sharing its interrupt. SSPs
can be used with the GPDMA controller.
- Three I2C-bus interfaces (one with open-drain and two with
standard port pins).
- I2S (Inter-IC Sound) interface for digital audio input or output. It
can be used with the GPDMA.
 Other peripherals:
- SD/MMC memory card interface.
- 160 General purpose I/O pins with configurable pull-up/down
resistors.
- 10-bit ADC with input multiplexing among 8 pins.
- 10-bit DAC.
- Four general purpose timers/counters with 8 capture inputs and
10 compare outputs. Each timer block has an external count
input.
- Two PWM/timer blocks with support for three-phase motor
control. Each PWM has an external count inputs.
- Real-Time Clock (RTC) with separate power domain. Clock
source can be the RTC oscillator or the APB clock.
- 2 kB SRAM powered from the RTC power pin, allowing data to be
stored when the rest of the chip is powered off.
- WatchDog Timer (WDT). The WDT can be clocked from the
internal RC oscillator, the RTC oscillator, or the APB clock.
 Single 3.3 V power supply (3.0 V to 3.6 V).
 4 MHz internal RC oscillator trimmed to 1 % accuracy that can
optionally be used as the system clock.
 Three reduced power modes: idle, sleep, and power-down.
 Four external interrupt inputs configurable as edge/level sensitive. All
pins on port 0 and port 2 can be used as edge sensitive interrupt
sources.
 Processor wake-up from Power-down mode via any interrupt able to
operate during Power-down mode (includes external interrupts, RTC
interrupt, USB activity, Ethernet wake-up interrupt, CAN bus activity,
port 0/2 pin interrupt).
 Two independent power needed features.
 Each peripheral has its own clock divider for further power saving.
These dividers help reduce active power by 20 % to 30 %.
 Brownout detect with separate thresholds for interrupt and forced
reset.
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