32-bit ARM CortexTM-M0 - NuMicro® Family

NUC121/125 Series

The 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 *
NUC121LC2AE
 (2304 kB)
  • operating frequency up to 50 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 2 internal RC oscillators
  • PLL controller (the source of system clock up to 100 MHz) sourced from 2 high speed oscillators: crystal or RC
  • up to 38 I/Os
  • 4 x 32-bit timers
  • Watchdog
  • 32 interrupts
  • interfaces: USCI (Universal Serial Control Interface which can be set to UART, SPI or I2C), UART, SPI, crystal-less USB 2.0 FS, 2 x I2C, I2S
  • 24-channel 16-bit PWM, clock frequency up to 100 MHz
  • 5 x PDMA
  • 10-channel 12-bit ADC
  • LDO regulator
  • 4-level BOD with Reset function
 32 KB 8 KB configurable 4.5 KB ISP
ICP		 Ext. crystal:
4 - 24 MHz
32.768 kHz

Int. RC:
48 MHz
10 kHz		 2.5 – 5.5 -40 – +105 LQFP-48
(7x7 mm)		 P
NUC121SC2AE
 (2304 kB)
  • operating frequency up to 50 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 2 internal RC oscillators
  • PLL controller (the source of system clock up to 100 MHz) sourced from 2 high speed oscillators: crystal or RC
  • up to 52 I/Os
  • 4 x 32-bit timers
  • Watchdog
  • 32 interrupts
  • interfaces: USCI (Universal Serial Control Interface which can be set to UART, SPI or I2C), UART, SPI, crystal-less USB 2.0 FS, 2 x I2C, I2S
  • 24-channel 16-bit PWM, clock frequency up to 100 MHz
  • 5 x PDMA
  • 12-channel 12-bit ADC
  • LDO regulator
  • 4-level BOD with Reset function
 32 KB 8 KB configurable 4.5 KB ISP
ICP		 Ext. crystal:
4 - 24 MHz
32.768 kHz

Int. RC:
48 MHz
10 kHz		 2.5 – 5.5 -40 – +105 LQFP-64
(7x7 mm)		 P
NUC121ZC2AE
 (2304 kB)
  • operating frequency up to 50 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 2 internal RC oscillators
  • PLL controller (the source of system clock up to 100 MHz) sourced from 2 high speed oscillators: crystal or RC
  • up to 22 I/Os
  • 4 x 32-bit timers
  • Watchdog
  • 32 interrupts
  • interfaces: USCI (Universal Serial Control Interface which can be set to UART, SPI or I2C), UART, SPI, crystal-less USB 2.0 FS, 2 x I2C, I2S
  • 17-channel 16-bit PWM, clock frequency up to 100 MHz
  • 5 x PDMA
  • 4-channel 12-bit ADC
  • LDO regulator
  • 4-level BOD with Reset function
 32 KB 8 KB configurable 4.5 KB ISP
ICP		 Ext. crystal:
4 - 24 MHz
32.768 kHz

Int. RC:
48 MHz
10 kHz		 2.5 – 5.5 -40 – +105 QFN-33
(5x5 mm)		 P
NUC125LC2AE
 (2304 kB)
  • operating frequency up to 50 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 2 internal RC oscillators
  • PLL controller (the source of system clock up to 100 MHz) sourced from 2 high speed oscillators: crystal or RC
  • up to 37 I/Os
  • 4 x 32-bit timers
  • Watchdog
  • 32 interrupts
  • interfaces: USCI (Universal Serial Control Interface which can be set to UART, SPI or I2C), UART, SPI, crystal-less USB 2.0 FS, 2 x I2C, I2S
  • 23-channel 16-bit PWM, clock frequency up to 100 MHz
  • 5 x PDMA
  • 10-channel 12-bit ADC
  • LDO regulator
  • 4-level BOD with Reset function
 32 KB 8 KB configurable 4.5 KB ISP
ICP		 Ext. crystal:
4 - 24 MHz
32.768 kHz

Int. RC:
48 MHz
10 kHz		 2.5 – 5.5 -40 – +105 LQFP-48
(7x7 mm)		 P
NUC125SC2AE
 (2304 kB)
  • operating frequency up to 50 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 2 internal RC oscillators
  • PLL controller (the source of system clock up to 100 MHz) sourced from 2 high speed oscillators: crystal or RC
  • up to 51 I/Os
  • 4 x 32-bit timers
  • Watchdog
  • 32 interrupts
  • interfaces: USCI (Universal Serial Control Interface which can be set to UART, SPI or I2C), UART, SPI, crystal-less USB 2.0 FS, 2 x I2C, I2S
  • 23-channel 16-bit PWM, clock frequency up to 100 MHz
  • 5 x PDMA
  • 12-channel 12-bit ADC
  • LDO regulator
  • 4-level BOD with Reset function
 32 KB 8 KB configurable 4.5 KB ISP
ICP		 Ext. crystal:
4 - 24 MHz
32.768 kHz

Int. RC:
48 MHz
10 kHz		 2.5 – 5.5 -40 – +105 LQFP-64
(7x7 mm)		 P
NUC125ZC2AE
 (2304 kB)
  • operating frequency up to 50 MHz
  • programmable system clock source
  • 2 external crystal oscillators and 2 internal RC oscillators
  • PLL controller (the source of system clock up to 100 MHz) sourced from 2 high speed oscillators: crystal or RC
  • up to 22 I/Os
  • 4 x 32-bit timers
  • Watchdog
  • 32 interrupts
  • interfaces: USCI (Universal Serial Control Interface which can be set to UART, SPI or I2C), UART, SPI, crystal-less USB 2.0 FS, 2 x I2C, I2S
  • 17-channel 16-bit PWM, clock frequency up to 100 MHz
  • 5 x PDMA
  • 4-channel 12-bit ADC
  • LDO regulator
  • 4-level BOD with Reset function
 32 KB 8 KB configurable 4.5 KB ISP
ICP		 Ext. crystal:
4 - 24 MHz
32.768 kHz

Int. RC:
48 MHz
10 kHz		 2.5 – 5.5 -40 – +105 QFN-33
(5x5 mm)		 P