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.