K32-L2: Ultra-Low-Power, Highly Integrated MCU

Overview

The K32 L2 MCU family’s low-leakage architecture, combined with its power-optimized peripherals and security features (such as cryptographic acceleration technology, cyclic redundancy check and a true random number generator), make it ideal for consumer, industrial and IoT applications requiring a low-priced, power efficient option with longer battery life.

This family includes a low power Arm^® Cortex^®-M0+ core and with options scaling from 64 KB to 512 KB Flash and from 32 kB to 128 kB SRAM, the K32 L2 family offers a wide range of memory resources to fit different application tasks within a small-form factor, low power, and highly integrated design.

Features

Ultra Low-Power

Low-power Arm^® Cortex^®-M0+ core
Multiple low-power modes enabling the reduction of dynamic power consumption
Low-power serial peripheral interfaces supporting low-power operation modes without waking up the core

On-Chip Memory

64 – 512 KB Flash Memory
32 – 128 KB SRAM Memory
16 – 32 KB ROM Memory with integrated bootloader

Connectivity and Communications

USB 2.0 Full Speed integrated with low-voltage regulator
4-8 channel DMA for peripheral and memory servicing with reduced CPU loading
Up to three I2C, up to three LPUART and up to three SPI serial interfaces with DMA support
FlexIO interface with capability of emulating multiple serial interfaces
Segment LCD supporting up to 24x8 or 28x4 segments*

Mixed-Signal

16-bit ADC module with high accuracy internal voltage reference (Vref)
Up to two High-speed analog comparator containing a 6-bit DAC for programmable reference input
One 12-bit DAC
1.2/2.1 V internal voltage reference

Timers

One 6-channel Timer/PWM module-
Two 2-channel Timer/PWM modules
Up to two low-power timer
Up to two Periodic interrupt timer
Real time clock

Human Machine Interface (HMI)

Capacitive touch sense interface supporting up to 16 external electrodes**
GPIO with pin interrupt support

Security**

Cryptographic acceleration unit supporting acceleration of DES, 3DES, AES, MD5, SHA-1 and SHA-256 algorithms
Hardware accelerated True Random Number Generator

*K32 L2B Only

**K32 L2A Only

Features

Ultra Low-Power

Low-power Arm^® Cortex^®-M0+ core
Multiple low-power modes enabling the reduction of dynamic power consumption
Low-power serial peripheral interfaces supporting low-power operation modes without waking up the core

On-Chip Memory

64 – 512 KB Flash Memory
32 – 128 KB SRAM Memory
16 – 32 KB ROM Memory with integrated bootloader

Connectivity and Communications

USB 2.0 Full Speed integrated with low-voltage regulator
4-8 channel DMA for peripheral and memory servicing with reduced CPU loading
Up to three I2C, up to three LPUART and up to three SPI serial interfaces with DMA support
FlexIO interface with capability of emulating multiple serial interfaces
Segment LCD supporting up to 24x8 or 28x4 segments*

Mixed-Signal

16-bit ADC module with high accuracy internal voltage reference (Vref)
Up to two High-speed analog comparator containing a 6-bit DAC for programmable reference input
One 12-bit DAC
1.2/2.1 V internal voltage reference

Timers

One 6-channel Timer/PWM module-
Two 2-channel Timer/PWM modules
Up to two low-power timer
Up to two Periodic interrupt timer
Real time clock

Human Machine Interface (HMI)

Capacitive touch sense interface supporting up to 16 external electrodes**
GPIO with pin interrupt support

Security**

Cryptographic acceleration unit supporting acceleration of DES, 3DES, AES, MD5, SHA-1 and SHA-256 algorithms
Hardware accelerated True Random Number Generator

*K32 L2B Only

**K32 L2A Only

Application Notes

K32 L2 MCU Family Block Diagram

K32 L2 MCU Family Block Diagram

Ultra-Low Power K32 L Series MCUs Optimized for Low-leakage Applications

Ultra-Low Power K32 L Series MCUs Optimized for Low-leakage Applications thumbnail

K32 L2 MCU Family Block Diagram
Ultra-Low Power K32 L Series MCUs Optimized for Low-leakage Applications

K32 L2 MCU Family Block Diagram

K32 L2 MCU Family Block Diagram

Ultra-Low Power K32 L Series MCUs Optimized for Low-leakage Applications

Development Boards and Designs

FRDM-K32L2A4S : NXP Freedom Platform for K32 L2A MCUs thumbnail

FRDM-K32L2A4S:NXP Freedom Platform for K32 L2A MCUs

Evaluation and Development Boards

FRDM-K32L2B3 : NXP Freedom Development Platform for K32 L2B MCUs thumbnail

FRDM-K32L2B3:NXP Freedom Development Platform for K32 L2B MCUs

Evaluation and Development Boards

Development Boards and Designs

FRDM-K32L2A4S : NXP Freedom Platform for K32 L2A MCUs thumbnail

FRDM-K32L2A4S:NXP Freedom Platform for K32 L2A MCUs

Evaluation and Development Boards

FRDM-K32L2B3 : NXP Freedom Development Platform for K32 L2B MCUs thumbnail

FRDM-K32L2B3:NXP Freedom Development Platform for K32 L2B MCUs

Evaluation and Development Boards

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Target Applications

Industrial

Building HVAC
Door Locks
Electricity Meter
Factory Automation
Gas Meter
Lighting Control
Robotics
Security and Access Control
Smart Power Socket and Light Switch
Smart Thermostats
Water Meter

Mobile

Battery-Operated Applications
Hearables
Input Device (Mouse, Pen, Keyboard)
Low-Power Applications
USB Peripherals
Wireless Charging Pad
Wristband

Smart Home

Technologies

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