NUC126 USB Series

The enhanced series of NuMicro Family 32-bit microcontrollers based on the ARM Cortex-M0 core, equipped with rich peripherals and crystal-less USB interface.
All ICs are RoHS compliant.

* Status: P - mass production, S - samples, UD - under development, N - not recommended for new design.

Chip	Description	Application Flash	SRAM	Data Flash	Loader Flash	Programm. methods	Clock   frequency	Supply   voltage   [V]	Operating temperature [°C]	Package	Status *
NUC126LE4AE (2233 KB)	operating frequency up to 72 MHz programmable system clock source 2 external crystal oscillators and 3 internal RC oscillators PLL controller (the source of system clock up to 144 MHz) sourced from 2 high speed oscillators: crystal or RC up to 35 I/Os 4 x 32-bit timers Watchdog RTC 32 interrupts interfaces: 3 x USCI (Universal Serial Control Interface which can be set to UART, SPI or I2C), 3 x UART, 2 x SPI, crystal-less USB 2.0 FS, 2 x I2C, 2 x I2S, 2 x SC 10-channel 16-bit PWM, clock frequency up to 144 MHz 5 x PDMA 9-channel 12-bit ADC 2 x analog comparator CRC LDO regulator 4-level BOD with Reset function	128 KB	20 KB	configurable	4 KB	ISP ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 48 MHz 10 kHz 22.1184 MHz (1% accuracy)	2.5 – 5.5	-40 – +105	LQFP-48 (7x7-mm)	P
NUC126LG4AE (2233 KB)	operating frequency up to 72 MHz programmable system clock source 2 external crystal oscillators and 3 internal RC oscillators PLL controller (the source of system clock up to 144 MHz) sourced from 2 high speed oscillators: crystal or RC up to 35 I/Os 4 x 32-bit timers Watchdog RTC 32 interrupts interfaces: 3 x USCI (Universal Serial Control Interface which can be set to UART, SPI or I2C), 3 x UART, 2 x SPI, crystal-less USB 2.0 FS, 2 x I2C, 2 x I2S, 2 x SC 10-channel 16-bit PWM, clock frequency up to 144 MHz 5 x PDMA 9-channel 12-bit ADC 2 x analog comparator CRC LDO regulator 4-level BOD with Reset function	256 KB	20 KB	configurable	4 KB	ISP ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 48 MHz 10 kHz 22.1184 MHz (1% accuracy)	2.5 – 5.5	-40 – +105	LQFP-48 (7x7-mm)	P
NUC126NE4AE (2233 KB)	operating frequency up to 72 MHz programmable system clock source 2 external crystal oscillators and 3 internal RC oscillators PLL controller (the source of system clock up to 144 MHz) sourced from 2 high speed oscillators: crystal or RC up to 35 I/Os 4 x 32-bit timers Watchdog RTC 32 interrupts interfaces: 3 x USCI (Universal Serial Control Interface which can be set to UART, SPI or I2C), 3 x UART, 2 x SPI, crystal-less USB 2.0 FS, 2 x I2C, 2 x I2S, 2 x SC 10-channel 16-bit PWM, clock frequency up to 144 MHz 5 x PDMA 9-channel 12-bit ADC 2 x analog comparator CRC LDO regulator 4-level BOD with Reset function	128 KB	20 KB	configurable	4 KB	ISP ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 48 MHz 10 kHz 22.1184 MHz (1% accuracy)	2.5 – 5.5	-40 – +105	QFP-48 (7x7-mm)	P
NUC126SE4AE (2233 KB)	operating frequency up to 72 MHz programmable system clock source 2 external crystal oscillators and 3 internal RC oscillators PLL controller (the source of system clock up to 144 MHz) sourced from 2 high speed oscillators: crystal or RC up to 49 I/Os 4 x 32-bit timers Watchdog RTC 32 interrupts interfaces: 3 x USCI (Universal Serial Control Interface which can be set to UART, SPI or I2C), UART, 2 x SPI, crystal-less USB 2.0 FS, 2 x I2C, 2 x I2S, 2 x SC 12-channel 16-bit PWM, clock frequency up to 144 MHz 5 x PDMA 15-channel 12-bit ADC 2 x analog comparator CRC LDO regulator 4-level BOD with Reset function	128 KB	20 KB	configurable	4 KB	ISP ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 48 MHz 10 kHz 22.1184 MHz (1% accuracy)	2.5 – 5.5	-40 – +105	LQFP-64 (7x7-mm)	P
NUC126SG4AE (2233 KB)	operating frequency up to 72 MHz programmable system clock source 2 external crystal oscillators and 3 internal RC oscillators PLL controller (the source of system clock up to 144 MHz) sourced from 2 high speed oscillators: crystal or RC up to 49 I/Os 4 x 32-bit timers Watchdog RTC 32 interrupts interfaces: 3 x USCI (Universal Serial Control Interface which can be set to UART, SPI or I2C), 3 x UART, 2 x SPI, crystal-less USB 2.0 FS, 2 x I2C, 2 x I2S, 2 x SC 12-channel 16-bit PWM, clock frequency up to 144 MHz 5 x PDMA 15-channel 12-bit ADC 2 x analog comparator CRC LDO regulator 4-level BOD with Reset function	256 KB	20 KB	configurable	4 KB	ISP ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 48 MHz 10 kHz 22.1184 MHz (1% accuracy)	2.5 – 5.5	-40 – +105	LQFP-64 (7x7-mm)	P
NUC126VG4AE (2233 KB)	operating frequency up to 72 MHz programmable system clock source 2 external crystal oscillators and 3 internal RC oscillators PLL controller (the source of system clock up to 144 MHz) sourced from 2 high speed oscillators: crystal or RC up to 81 I/Os 4 x 32-bit timers Watchdog RTC 32 interrupts interfaces: 3 x USCI (Universal Serial Control Interface which can be set to UART, SPI or I2C), 3 x UART, 2 x SPI, crystal-less USB 2.0 FS, 2 x I2C, 2 x I2S, 2 x SC 12-channel 16-bit PWM, clock frequency up to 144 MHz 5 x PDMA 20-channel 12-bit ADC 2 x analog comparator CRC LDO regulator 4-level BOD with Reset function	256 KB	20 KB	configurable	4 KB	ISP ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 48 MHz 10 kHz 22.1184 MHz (1% accuracy)	2.5 – 5.5	-40 – +105	LQFP-100 (14x14-mm)	P