Products MSP430 microcontrollers MSP430AFE221 — 12 MHz metering AFE with 1 24-bit Sigma-Delta ADC, 4KB Flash, 256B RAM MSP430AFE222 — 12 MHz metering AFE with 2 24-bit Sigma-Delta ADCs, 4KB Flash, 256B RAM MSP430AFE223 — 12 MHz metering AFE with 3 24-bit Sigma-Delta ADCs, 4KB Flash, 256B RAM MSP430AFE231 — 12 MHz metering AFE with 1 24-bit Sigma-Delta ADC, 8KB Flash, 512B RAM MSP430AFE232 — 12 MHz