MKL16Z64VFT4R
MKL16Z64VFT4R - 48MHz Cortex-M0+ 64KB Flash MCU | NXP
The NXP MKL16Z64VFT4R is an ultra-low-power 32-bit ARM Cortex-M0+ microcontroller from the Kinetis KL1x family, running up to 48 MHz with 64 KB of on-chip Flash and 8 KB of SRAM, supplied in a 48-pin QFN (7x7 mm) package with an exposed thermal pad. The Kinetis KL16 sub-family targets general-purpose low-power applications that need USB connectivity, segment-LCD support, and a richer analog peripheral set than the entry-level KL0x family, while preserving the KL0x energy-efficiency envelope.
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, and a fixed set of peripherals (timers, ADC, communication controllers, GPIO) into one package. The ARM Cortex-M0+ core used here is the most energy-efficient member of the Cortex-M family, designed for deterministic real-time control in cost-constrained embedded products. The Kinetis family sits within NXP's broader portfolio of 32-bit microcontrollers, which in turn belongs to the larger category of microcontrollers and microprocessors (semiconductor -> IC -> MCU -> Kinetis -> KL1x).
Key specifications include a 48 MHz maximum core clock, 64 KB program Flash, 8 KB SRAM, USB 2.0 full-speed device with on-chip transceiver, segment-LCD driver (up to 8x36 or 4x40 segments), 12-bit SAR ADC with up to 16 single-ended channels, low-power UART/SPI/I2C peripherals, and an operating voltage range of 1.71 V to 3.6 V. The device also integrates a low-power RTC, multiple low-power modes (VLLS0..3, LLS, VLPR, STOP), DMA, and a low-power timer for periodic wake-up. The 48-QFN exposed-pad package provides a low thermal resistance and a compact 7x7 mm footprint for space-constrained boards.
Architecturally, the KL16 combines a Cortex-M0+ core, single-cycle I/O bus, and a peripheral bridge feeding independent timer, communication, and analog subsystems. The on-chip voltage regulator supports internal core supply from a single external 1.71-3.6 V rail, eliminating the need for multiple external supplies. Hardware AES is not present on this sub-family, but the segment LCD controller, USB FS device, and 12-bit ADC give it strong suitability for human-interface, metering, and consumer products.
Typical applications include battery-powered sensor nodes, USB-CDC or USB-HID consumer accessories, small appliances with segment-LCD displays, electronic shelf labels, low-end smart meters, and portable medical accessories. The integrated USB transceiver is a notable differentiator for cable-connected low-power peripherals. The combination of segment-LCD, USB, and Cortex-M0+ energy efficiency is uncommon at this price/performance tier.
When designing with this part, allocate the exposed pad (EP) on the PCB as a solid copper pour connected to ground to meet thermal and electrical performance; route USB DP/DM as a 90 ohm differential pair and place the 48 MHz crystal within 5 mm of the XTAL pins. Decouple VDD/VREFL/VREFH with 100 nF ceramics placed as close as possible to the respective pins. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
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