16-bit MSP430 with USB and mixed-signal peripherals
The MSP430F6636IZQWR is a 16-bit microcontroller from the MSP430F6xx series, built around the MSP430 CPUXV2 core running at 20 MHz. The 74 general-purpose I/O lines can drive a local keypad, display, or parallel interface. The analog front end pairs a 16-channel 12-bit ADC with a 2-channel 12-bit DAC, so a single chip can digitise multiple sensor inputs and output an analog control voltage — common in portable medical or industrial measurement gear.
Texas Instruments has marked the MSP430F6636IZQWR as obsolete. For existing BOM lines that require this exact order code, supply is available through independent distribution.
Housed in a 113-ball VFBGA (BGA Microstar Junior, 7x7 mm), the package demands a multi-layer PCB for fan-out of the 0.50 mm pitch balls. The industrial temperature range (-40°C to 85°C) suits enclosures on factory floors, outdoor data loggers, or engine-bay-adjacent electronics where ambient heat cycles are common. Internal oscillator eliminates the external crystal for the core clock, though a USB-compliant crystal is still needed on the USB PHY pins for accurate full-speed timing.