NXP Semiconductors MKL27Z64VDA4R

Overview

MKL27Z64VDA4R from NXP Semiconductors (formerly Freescale) is a 48 MHz ARM® Cortex®-M0+ microcontroller with 64 KB flash, 16 KB SRAM, and USB Full-Speed 2.0 device controller supporting crystal-less operation. It features a high-accuracy 48 MHz internal reference clock (±0.5%), down to 46 µA/MHz in very low power run mode, and 1.68 µA in stop mode with RAM + RTC retained - optimized for battery-powered USB peripherals such as smart sensors and portable medical devices.

For engineers reviewing the MKL27Z64VDA4R datasheet, MKL27Z64VDA4R pinout, MKL27Z64VDA4R application, or MKL27Z64VDA4R equivalent, key selection criteria include its 36-pin XFBGA package (3.5×3.5 mm, 0.5 mm pitch), 30 GPIOs, 14-channel 16-bit ADC, FlexIO peripheral for custom serial emulation, and integrated ROM bootloader supporting UART/I2C/USB/SPI firmware updates.

Technical Context

The MKL27Z64VDA4R implements an ARM Cortex-M0+ core with NVIC and SWD debug interface, paired with a MCG-Lite clock generator supporting HIRC48M (±0.5%), LIRC8M (±3%), and 32–40 kHz/3–32 MHz crystal oscillators. Its memory subsystem includes 64 KB flash (1 KB pages), 16 KB SRAM, and 16 KB ROM containing a field-upgradable bootloader.

Peripherals are organized across three clock domains: platform (max 48 MHz), bus (max 24 MHz), and system (USB FS clock). Key modules include USB FS device controller (crystal-less), two I²C interfaces (up to 1 Mbit/s), two SPI modules (24/12 Mbit/s), FlexIO for UART/SPI/I²C/PWM emulation, and a 16-bit ADC with internal 1.2 V reference achieving up to 818 ksps at ≤13-bit resolution.

Key Specifications

Pinout & Package

Package: 36-pin XFBGA (3.5 mm × 3.5 mm, 0.5 mm pitch, 0.5 mm thickness), per package drawing 98ASA00708D.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MKL27Z64VDA4R, MKL27Z64VLH4 offers greater I/O and layout simplicity at the expense of size, while MKE02Z64VLD4 sacrifices USB and FlexIO to reduce cost - making MKL27Z64VDA4R the optimal balance of miniaturization, USB integration, and peripheral versatility for space-constrained USB-peripheral designs.

Availability

MKL27Z64VDA4R is available at Aetrix Electronics and suitable for battery-powered USB peripherals, portable medical diagnostics, and industrial wireless gateways requiring stable component supply and long-term lifecycle support.

Supply support for MKL27Z64VDA4R includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader delivering secure, scalable solutions for automotive, industrial, IoT, and mobile applications, with deep expertise in ARM-based microcontrollers and connectivity IP.

The Kinetis KL27 family was designed specifically for cost-sensitive, battery-operated USB-enabled edge devices - emphasizing ultra-low-power operation, crystal-less USB, and flexible peripheral emulation via FlexIO.

FAQ

What is the package type and pin count of MKL27Z64VDA4R?

MKL27Z64VDA4R uses a 36-pin XFBGA package measuring 3.5 mm × 3.5 mm with 0.5 mm pitch and 0.5 mm thickness. This compact form factor is documented in Freescale package drawing 98ASA00708D and supports high-density PCB layouts typical in wearables and portable instrumentation.

Does MKL27Z64VDA4R support crystal-less USB operation?

Yes, MKL27Z64VDA4R integrates a USB Full-Speed 2.0 device controller with internal oscillator trimming that enables crystal-less operation - eliminating the need for an external 12 MHz crystal and associated load capacitors while maintaining USB specification compliance.

What are the low-power modes supported by MKL27Z64VDA4R?

MKL27Z64VDA4R supports six static low-power modes: Very Low Power Run (VLPR), Very Low Power Wait (VLPW), Stop, Very Low Power Stop (VLPS), Low Leakage Stop (LLS), and Very Low Leakage Stop (VLLS0/VLLS1/VLLS3), with current draw as low as 1.68 µA in stop mode while retaining RAM and RTC.

How many GPIOs and ADC channels does MKL27Z64VDA4R provide?

MKL27Z64VDA4R provides 30 general-purpose I/O pins and supports up to 14 single-ended ADC input channels. The 16-bit SAR ADC achieves up to 818 ksps sampling rate at ≤13-bit resolution using the internal 1.2 V voltage reference.

Is there a built-in bootloader in MKL27Z64VDA4R?

Yes, MKL27Z64VDA4R includes 16 KB of factory-programmed ROM containing a bootloader that supports firmware updates over UART, I²C, SPI, and USB interfaces - enabling field upgrades without requiring JTAG/SWD debug access or exposing flash contents.