50 MHz Cortex-M0 — what it means for the control loop
The LPC1112JHN33/103E runs a 32-bit ARM Cortex-M0 core at 50 MHz. That clock rate, paired with the single-cycle multiply and the 16 KB Flash, handles a sensor polling loop with a couple of PID terms or a Modbus RTU slave without breaking a sweat. The 4 KB RAM is the hard limit — enough for a modest state machine and a few buffers, not for a TCP/IP stack or a large data log.
Peripherals and I/O — what's on the pins
28 I/O lines, with I²C, SPI, and UART for serial buses, plus an 8-channel 10-bit ADC for analog inputs. Brown-out detect, POR, and a watchdog timer are built in — no external supervisor needed for basic reset handling. The internal oscillator saves a crystal if timing accuracy within a few percent is acceptable.
Lifecycle and sourcing
Status is Active — no end-of-life notice, no last-time-buy clock ticking. Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.