General description
The LPC11Cx2/Cx4 are an ARM Cortex-M0 based, low-cost 32-bit MCU family, designed
for 8/16-bit microcontroller applications, offering performance, low power, simple
instruction set and memory addressing together with reduced code size compared to
existing 8/16-bit architectures.
The LPC11Cx2/Cx4 operate at CPU frequencies of up to 50 MHz.
The peripheral complement of the LPC11Cx2/Cx4 includes 16/32 kB of flash memory,
8 kB of data memory, one C_CAN controller, one Fast-mode Plus I2C-bus interface, one
RS-485/EIA-485 UART, two SPI interfaces with SSP features, four general purpose
counter/timers, a 10-bit ADC, and up to 40 general purpose I/O pins.
On-chip C_CAN drivers and flash In-System Programming tools via C_CAN are included.
In addition, the LPC11C22 and LPC11C24 parts include an on-chip, high-speed CAN
transceiver.

Features and benefits
 System:
 ARM Cortex-M0 processor, running at frequencies of up to 50 MHz.
 ARM Cortex-M0 built-in Nested Vectored Interrupt Controller (NVIC).
 Serial Wire Debug.
 System tick timer.
 Memory:
 32 kB (LPC11Cx4) or 16 kB (LPC11Cx2) on-chip flash program memory.
 8 kB SRAM data memory.
 In-System Programming (ISP) and In-Application Programming (IAP) via on-chip
bootloader software.
 Flash ISP commands can be issued via UART or C_CAN.
 Digital peripherals:
 General Purpose I/O (GPIO) pins with configurable pull-up/pull-down resistors.
 40 GPIO pins on the LPC11C12/C14 parts; 36 GPIO pins on the LPC11C22/C24
parts.
 GPIO pins can be used as edge and level sensitive interrupt sources.
 High-current output driver (20 mA) on one pin.
 High-current sink drivers (20 mA) on two I2C-bus pins in Fast-mode Plus.
 Four general purpose counter/timers with a total of four capture inputs and 13
(LPC11C12/C14) or 12 (LPC11C22/C24) match outputs.
 Programmable WatchDog Timer (WDT).
 Analog peripherals:
 10-bit ADC with input multiplexing among 8 pins.
 Serial interfaces:
 UART with fractional baud rate generation, internal FIFO, and RS-485 support.
 Two SPI controllers with SSP features and with FIFO and multi-protocol
capabilities.
 I2C-bus interface supporting full I2C-bus specification and Fast-mode Plus with a
data rate of 1 Mbit/s with multiple address recognition and monitor mode.
 C_CAN controller. On-chip C_CAN and CANopen drivers included.
 On-chip, high-speed CAN transceiver (parts LPC11C22/C24 only).
 Clock generation:
 12 MHz internal RC oscillator trimmed to 1 % accuracy that can optionally be used
as a system clock.
 Crystal oscillator with an operating range of 1 MHz to 25 MHz.
 Programmable watchdog oscillator with a frequency range of 7.8 kHz to 1.8 MHz.
 PLL allows CPU operation up to the maximum CPU rate without the need for a
high-frequency crystal. May be run from the system oscillator or the internal RC
oscillator.
 Clock output function with divider that can reflect the system oscillator, IRC, CPU
clock, or the Watchdog clock.
 Power control:
 Integrated PMU (Power Management Unit) to minimize power consumption during
Sleep, Deep-sleep, and Deep power-down modes.
 Three reduced power modes: Sleep, Deep-sleep, and Deep power-down.
 Processor wake-up from Deep-sleep mode via a dedicated start logic using 13 of
the GPIO pins.
 Power-On Reset (POR).
 Brownout detect with four separate thresholds for interrupt and forced reset.
 Unique device serial number for identification.
 Single 3.3 V power supply (1.8 V to 3.6 V).
 Available as 48-pin LQFP package.