What the MSP430F2003TN is and where it fits
Memory budget — what 1 KB Flash and 128 B RAM mean for your firmware
1 KB of Flash and 128 bytes of RAM is a constrained environment. This MCU is not for a multi-threaded RTOS or a TCP/IP stack — it is sized for a single polling loop, a state machine, or an interrupt-driven sensor readout. Typical firmware fits: a temperature/humidity sensor polling I²C every second, a battery fuel-gauge algorithm, a simple PWM fan controller, or a digital potentiometer interface. The 256-byte information memory segment (part of the Flash block) can hold calibration constants or boot parameters that survive power cycles. The 16-bit core and 16 MHz clock provide enough throughput for 10 ksps ADC conversions with software filtering. The RAM ceiling means look-up tables stay small.
10-channel 16-bit ADC — direct sensor interface without external silicon
Channel count of 10 matches the 10 available I/O pins — the ADC mux shares the port pins, so every analog input reduces digital I/O by one. Plan your pin allocation early: if you need all 10 analog channels, you have zero GPIO left for pushbuttons or status LEDs. The 16-bit result is stored in two 8-bit registers per channel; read them in sequence within the same ADC interrupt to avoid a mid-read update.
Sourcing and lifecycle — active production, standard channel
The part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time. No minimum order quantity constraints beyond standard reel or tube multiples — the 14-PDIP ships in tubes.