M261/M262/M263 Series

The series of NuMicro Family 32-bit microcontrollers based on the ARM Cortex-M23 core using ARMv8-M architecture. They provide secure memory areas to secure critical program codes and AES hardware accelerator for data encryption. They are equipped with rich peripherals and communication interfaces, including UART, SPI, I²C, I²S, CAN, LIN, SD, SC and USB. These chips are mainly designed to realize robust IoT security applications.
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 *
M261KIAAE (6786 KB)	operating frequency up to 64 MHz programmable system clock source 2 external crystal oscillators and 4 internal RC oscillators 32-bit hardware multiplier / divider 4-region eXecute-Only-Memory ( XOM ) to secure critical program codes AES 256 / 192 / 128 hardware accelerator and True Random Number Generator ( TRNG ) for data encryption 6 tamper detection pins up to 107 I/O pins 4 x 32-bit timers RTC Watchdog interfaces: 6 x Low Power UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 2 x I2C, 4 x SPI / I2S (configured as SPI or I2S), 2 x LIN, 3 x SC ( ISO-7816-3), 1 x SDHC, 16/8-bits EBI VAI (Voltage Adjustable Interface) 12-channel PDMA 24-channel 16-bit PWM 16-channel 12-bit ADCs 2-channel 12-bit DAC external VREF pin or internal reference voltage VREF 2 x analog comparator 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID) LDO regulator power saving modes: Power-down, Standby Power-down, Low Leakage Power-down, Ultra Low Leakage Power-down, Fast Wake-up Power-down, and Deep Power-down	512 KB	96 KB	configurable	4 KB	ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 12 MHz 48 MHz 10 kHz 32 kHz	1.8 – 3.6	-40 – +105	LQFP-128	P
M261SIAAE (6786 KB)	operating frequency up to 64 MHz programmable system clock source 2 external crystal oscillators and 4 internal RC oscillators 32-bit hardware multiplier / divider 4-region eXecute-Only-Memory ( XOM ) to secure critical program codes AES 256 / 192 / 128 hardware accelerator and True Random Number Generator ( TRNG ) for data encryption 1 tamper detection pin up to 51 I/O pins 4 x 32-bit timers RTC Watchdog interfaces: 6 x Low Power UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 2 x I2C, 4 x SPI / I2S (configured as SPI or I2S), 2 x LIN, 3 x SC ( ISO-7816-3), 1 x SDHC, 16/8-bits EBI VAI (Voltage Adjustable Interface) 12-channel PDMA 24-channel 16-bit PWM 16-channel 12-bit ADCs 2-channel 12-bit DAC external VREF pin or internal reference voltage VREF 2 x analog comparator 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID) LDO regulator power saving modes: Power-down, Standby Power-down, Low Leakage Power-down, Ultra Low Leakage Power-down, Fast Wake-up Power-down, and Deep Power-down	512 KB	96 KB	configurable	4 KB	ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 12 MHz 48 MHz 10 kHz 32 kHz	1.8 – 3.6	-40 – +105	LQFP-64	P
M261ZIAAE (6786 KB)	operating frequency up to 64 MHz programmable system clock source 2 external crystal oscillators and 4 internal RC oscillators 32-bit hardware multiplier / divider 4-region eXecute-Only-Memory ( XOM ) to secure critical program codes AES 256 / 192 / 128 hardware accelerator and True Random Number Generator ( TRNG ) for data encryption up to 25 I/O pins 4 x 32-bit timers RTC Watchdog interfaces: 6 x Low Power UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 1 x QSPI, 2 x I2C, 3 x SPI / I2S (configured as SPI or I2S), 2 x LIN, 3 x SC ( ISO-7816-3), 1 x SDHC VAI (Voltage Adjustable Interface) 12-channel PDMA 24-channel 16-bit PWM 9-channel 12-bit ADCs 2-channel 12-bit DAC external VREF pin or internal reference voltage VREF 2 x analog comparator 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID) LDO regulator power saving modes: Power-down, Standby Power-down, Low Leakage Power-down, Ultra Low Leakage Power-down, Fast Wake-up Power-down, and Deep Power-down	512 KB	96 KB	configurable	4 KB	ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 12 MHz 48 MHz 10 kHz 32 kHz	1.8 – 3.6	-40 – +105	QFN-33	P
M262KIAAE (6786 KB)	operating frequency up to 64 MHz programmable system clock source 2 external crystal oscillators and 4 internal RC oscillators 32-bit hardware multiplier / divider 4-region eXecute-Only-Memory ( XOM ) to secure critical program codes AES 256 / 192 / 128 hardware accelerator and True Random Number Generator ( TRNG ) for data encryption 6 tamper detection pins up to 107 I/O pins 4 x 32-bit timers RTC Watchdog interfaces: 6 x Low Power UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 2 x I2C, 4 x SPI / I2S (configured as SPI or I2S), 2 x LIN, 3 x SC ( ISO-7816-3), 1 x SDHC, 16/8-bits EBI, USB 2.0 FS OTG, USB 1.1 Host, USB 2.0 FS Device VAI (Voltage Adjustable Interface) 12-channel PDMA 24-channel 16-bit PWM 16-channel 12-bit ADCs 2-channel 12-bit DAC external VREF pin or internal reference voltage VREF 2 x analog comparator 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID) LDO regulator power saving modes: Power-down, Standby Power-down, Low Leakage Power-down, Ultra Low Leakage Power-down, Fast Wake-up Power-down, and Deep Power-down	512 KB	96 KB	configurable	4 KB	ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 12 MHz 48 MHz 10 kHz 32 kHz	1.8 – 3.6	-40 – +105	LQFP-128	P
M262SIAAE (6786 KB)	operating frequency up to 64 MHz programmable system clock source 2 external crystal oscillators and 4 internal RC oscillators 32-bit hardware multiplier / divider 4-region eXecute-Only-Memory ( XOM ) to secure critical program codes AES 256 / 192 / 128 hardware accelerator and True Random Number Generator ( TRNG ) for data encryption 1 tamper detection pin up to 51 I/O pins 4 x 32-bit timers RTC Watchdog interfaces: 6 x Low Power UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 2 x I2C, 4 x SPI / I2S (configured as SPI or I2S), 2 x LIN, 3 x SC ( ISO-7816-3), 1 x SDHC, 16/8-bits EBI, USB 2.0 FS OTG, USB 1.1 Host, USB 2.0 FS Device VAI (Voltage Adjustable Interface) 12-channel PDMA 24-channel 16-bit PWM 16-channel 12-bit ADCs 2-channel 12-bit DAC external VREF pin or internal reference voltage VREF 2 x analog comparator 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID) LDO regulator power saving modes: Power-down, Standby Power-down, Low Leakage Power-down, Ultra Low Leakage Power-down, Fast Wake-up Power-down, and Deep Power-down	512 KB	96 KB	configurable	4 KB	ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 12 MHz 48 MHz 10 kHz 32 kHz	1.8 – 3.6	-40 – +105	LQFP-64	P
M262ZIAAE (6786 KB)	operating frequency up to 64 MHz programmable system clock source 2 external crystal oscillators and 4 internal RC oscillators 32-bit hardware multiplier / divider 4-region eXecute-Only-Memory ( XOM ) to secure critical program codes AES 256 / 192 / 128 hardware accelerator and True Random Number Generator ( TRNG ) for data encryption up to 25 I/O pins 4 x 32-bit timers RTC Watchdog interfaces: 6 x Low Power UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 2 x I2C, 3 x SPI / I2S (configured as SPI or I2S), 2 x LIN, 3 x SC ( ISO-7816-3), 1 x SDHC, USB 2.0 FS OTG, USB 1.1 Host, USB 2.0 FS Device VAI (Voltage Adjustable Interface) 12-channel PDMA 24-channel 16-bit PWM 9-channel 12-bit ADCs 2-channel 12-bit DAC external VREF pin or internal reference voltage VREF 2 x analog comparator 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID) LDO regulator power saving modes: Power-down, Standby Power-down, Low Leakage Power-down, Ultra Low Leakage Power-down, Fast Wake-up Power-down, and Deep Power-down	512 KB	96 KB	configurable	4 KB	ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 12 MHz 48 MHz 10 kHz 32 kHz	1.8 – 3.6	-40 – +105	QFN-33	P
M263KIAAE (6786 KB)	operating frequency up to 64 MHz programmable system clock source 2 external crystal oscillators and 4 internal RC oscillators 32-bit hardware multiplier / divider 4-region eXecute-Only-Memory ( XOM ) to secure critical program codes AES 256 / 192 / 128 hardware accelerator and True Random Number Generator ( TRNG ) for data encryption 6 tamper detection pins up to 107 I/O pins 4 x 32-bit timers RTC Watchdog interfaces: 6 x Low Power UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 2 x I2C, 4 x SPI / I2S (configured as SPI or I2S), 2 x LIN, 3 x SC ( ISO-7816-3), 1 x SDHC, 16/8-bits EBI, USB 2.0 FS OTG, USB 1.1 Host, USB 2.0 FS Device, CAN 2.0B VAI (Voltage Adjustable Interface) 12-channel PDMA 24-channel 16-bit PWM 16-channel 12-bit ADCs 2-channel 12-bit DAC external VREF pin or internal reference voltage VREF 2 x analog comparator 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID) LDO regulator power saving modes: Power-down, Standby Power-down, Low Leakage Power-down, Ultra Low Leakage Power-down, Fast Wake-up Power-down, and Deep Power-down	512 KB	96 KB	configurable	4 KB	ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 12 MHz 48 MHz 10 kHz 32 kHz	1.8 – 3.6	-40 – +105	LQFP-128	P
M263SIAAE (6786 KB)	operating frequency up to 64 MHz programmable system clock source 2 external crystal oscillators and 4 internal RC oscillators 32-bit hardware multiplier / divider 4-region eXecute-Only-Memory ( XOM ) to secure critical program codes AES 256 / 192 / 128 hardware accelerator and True Random Number Generator ( TRNG ) for data encryption 1 tamper detection pin up to 51 I/O pins 4 x 32-bit timers RTC Watchdog interfaces: 6 x Low Power UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 2 x I2C, 4 x SPI / I2S (configured as SPI or I2S), 2 x LIN, 3 x SC ( ISO-7816-3), 1 x SDHC, 16/8-bits EBI, USB 2.0 FS OTG, USB 1.1 Host, USB 2.0 FS Device, CAN 2.0B VAI (Voltage Adjustable Interface) 12-channel PDMA 24-channel 16-bit PWM 16-channel 12-bit ADCs 2-channel 12-bit DAC external VREF pin or internal reference voltage VREF 2 x analog comparator 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID) LDO regulator power saving modes: Power-down, Standby Power-down, Low Leakage Power-down, Ultra Low Leakage Power-down, Fast Wake-up Power-down, and Deep Power-down	512 KB	96 KB	configurable	4 KB	ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 12 MHz 48 MHz 10 kHz 32 kHz	1.8 – 3.6	-40 – +105	LQFP-64	P
M263ZIAAE (6786 KB)	operating frequency up to 64 MHz programmable system clock source 2 external crystal oscillators and 4 internal RC oscillators 32-bit hardware multiplier / divider 4-region eXecute-Only-Memory ( XOM ) to secure critical program codes AES 256 / 192 / 128 hardware accelerator and True Random Number Generator ( TRNG ) for data encryption up to 25 I/O pins 4 x 32-bit timers RTC Watchdog interfaces: 6 x Low Power UART, 2 x USCI (Universal Serial Control Interface configured as UART, SPI or I2C), 2 x I2C, 3 x SPI / I2S (configured as SPI or I2S), 2 x LIN, 3 x SC ( ISO-7816-3), 1 x SDHC, USB 2.0 FS OTG, USB 1.1 Host, USB 2.0 FS Device, CAN 2.0B VAI (Voltage Adjustable Interface) 12-channel PDMA 24-channel 16-bit PWM 9-channel 12-bit ADCs 2-channel 12-bit DAC external VREF pin or internal reference voltage VREF 2 x analog comparator 96-bit Unique ID (UID) and 128-bit Unique Customer ID (UCID) LDO regulator power saving modes: Power-down, Standby Power-down, Low Leakage Power-down, Ultra Low Leakage Power-down, Fast Wake-up Power-down, and Deep Power-down	512 KB	96 KB	configurable	4 KB	ICP	Ext. crystal: 4 - 24 MHz 32.768 kHz Int. RC: 12 MHz 48 MHz 10 kHz 32 kHz	1.8 – 3.6	-40 – +105	QFN-33	P