MSP430FR5731 24 MHz ULP microcontroller with 4 KB FRAM, 1 KB SRAM, 32 IO, 10-bit ADC and comparator 38-TSSOP -40 to 85
Texas Instruments
Texas Instruments - MSP430FR5731
$0.68 - * $4.29
Texas Instruments - MSP430FR5731IDAR
$1.36 - $1.49
Texas Instruments - MSP430FR5731IRHAR
$1.43 - $1.65
Texas Instruments - MSP430FR5731IRHAT
$0.68 - $5.77