NXP Semiconductors
K32L2B3x
Data Sheet: Technical Data
Rev. 3, 09/2020
K32 L2B Microcontroller
K32L2B31Vxx0A
K32L2B21Vxx0A
K32L2B11Vxx0A
48 MHz Arm® Cortex®-M0+ and 64/128/256 KB Flash
The K32 L2B series is optimized for cost-sensitive and battery-
powered applications requiring low-power USB connectivity and
an optional segment LCD (SLCD). The product offers:
• Optional low power segment LCD up to 24x8 or 28x4
• USB FS 2.0 device without requiring an external crystal
• Embedded ROM with boot loader for flexible program
upgrade
32 QFN
5x5 mm P 0.5 mm
48 QFN
7x7 mm P 0.5 mm
• High accuracy internal voltage and clock reference
• FlexIO to support any standard and customized serial
peripheral emulation
• Down to 54 uA/MHz in very low power run mode and 1.96
uA in deep sleep mode (RAM + RTC retained)
64 LQFP
10x10 mm P 0.5 mm
64 BGA
5x5 mm P 0.5 mm
Core Processor
Peripherals
• Arm® Cortex®-M0+ core up to 48 MHz
• SLCD supporting up to 24x8 or 28x4 segments
• USB full-speed 2.0 device controller supporting
crystal-less operation
Memories
• 64/128/256 KB program flash memory
• 32 KB SRAM
• One UART module supporting ISO7816, operating
up to 1.5 Mbit/s
• 16 KB ROM with build-in bootloader
• 32-byte backup register
• Two low-power UART modules supporting
asynchronous operation in low-power modes
• Two I2C modules and I2C0 supporting up to 1
Mbit/s
• Two 16-bit SPI modules supporting up to 24 Mbit/s
• One FlexIO module supporting emulation of
additional UART, SPI, I2C, PWM and other serial
modules, etc.
• One 16-bit 461 ksps ADC module with high
accuracy internal voltage reference (Vref) and up to
16 channels
• High-speed analog comparator containing a 6-bit
DAC for programmable reference input
• One 12-bit DAC
System
• 4-channel asynchronous DMA controller
• Watchdog
• Low-leakage wakeup unit
• Two-pin Serial Wire Debug (SWD) programming and
debug interface
• Micro Trace Buffer
• Bit manipulation engine
• Interrupt controller
Clocks
• 48 MHz high accuracy (up to 0.5%) internal reference
clock
• 1.2 V internal voltage reference
• 8 MHz/2 MHz high accuracy (up to 3%) internal
reference clock
• 1 KHz reference clock active under all low-power
modes (except VLLS0)
I/O
• Up to 50 general-purpose input/output pins (GPIO)
and 6 high-drive pad
• 32–40 KHz and 3–32 MHz crystal oscillator
NXP reserves the right to change the production detail specifications as may be
required to permit improvements in the design of its products.