M263 datasheet(11/398 Pages) NUVOTON

11 / 398 page

M261/M262/M263

Mar 25, 2020

Page 11 of 398

Rev 1.02

GENERAL DESCRIPTION

The NuMicro

® M261/M262/M263 series is a low-power microcontroller platform based on Arm®

Cortex

® -M23 core for Armv8-M architecture. It runs up to 64 MHz with 512 Kbytes embedded

Flash memory in dual bank mode supporting Over-The-Air (OTA) firmware update and 96 Kbytes

embedded SRAM. The 32-bit low-power microcontrollers supports low supply voltage from 1.8 ~

3.6V and operating temperature range from -40℃ ~ +105 ℃.

Low-power Technology for IoT application

Low power and robust security are two major vitals for Internet-of-Things (IoT) applications. The

NuMicro

® M261/M262/M263 series provides multi power modes for diverse operating scenarios,

such as Power-down mode (PD), Fast Wake-up Power-down mode (FWPD), Low leakage Power-

down mode (LLPD), Ultra Low leakage Power-down mode (ULLPD), Standby Power-down mode

(SPD) and Deep Power-down mode (DPD). The NuMicro

M261/M262/M263 series also

integrates RTC with independent VBAT voltage source pin to support low power mode with main

power off and VBAT only. Regarding the power consumption of the NuMicro

® M261/M262/M263

series,

97 μA/MHz (LDO mode) and 45 μA/MHz (DC-DC mode) in normal run mode, 2.8 μA in

Standby Power-down mode, and

less than 2μA in Deep Power-down mode without V

BAT. It’s low

power, wide supply voltage and fast wake-up features make it suitable for battery-powered IoT

applications.

Secure Boot - Make sure your products in secure execution

The NuMicro

® M261/M262/M263 series provides secure boot function for a system developer to

create a secure execution system in the microcontroller. The secure boot is a chain of secure

process for verifying each software identity and integrity on the system. Secure boot can help to

make sure that a device boots using only software that is trusted by the original developer. When

the MCU starts, the firmware checks the signature of boot software, if the signatures are valid, the

MCU boots, and the firmware gives control to the operating system. Otherwise, the system will

not run at all.

eXecute-Only-Memory (XOM) - Protect the intelligent property of developers

The NuMicro

M261/M262/M263 series provides 4-region programable eXecute-Only-Memory

(XOM) to secure critical program code. The AES 256/192/128 hardware accelerator and True

Random Number Generator (TRNG) are built-in for data encryption. Up to six tamper detection

pins are implemented to avoid malicious damage from hacker. Accompany with 96-bit Unique

Identification (UID) and 128-bit Unique Customer Identification (UCID) to enhance the product

security.

The NuMicro

® M261/M262/M263 series is equipped with plenty of peripherals such as Timers,

Watchdog Timers, RTC, PDMA, External Bus Interface (EBI), Low-power UART, Universal Serial

Control Interface (USCI), Qual SPI (QSPI), SPI/I²S, I

2C, Smart Card Interface (ISO-7816-3),

GPIOs, up to 24 channels of PWM, makes it highly suitable for connecting comprehensive

external modules and LED lighting control. The NuMicro

M261/M262/M263 series also

integrates high performance analog front-end circuit blocks, such as one 16 channels of 12-bit

3.76 MSPS SAR ADC, two 12-bit 1 MSPS voltage type DAC, two rail-to-rail analog comparator

(ACMP), temperature sensor, low voltage reset (LVR) and brown-out detector (BOD) to enhance

product performance, reduce external components and form factor simultaneously.

Voltage Adjustable Interface (VAI) - Support 2

nd I/O voltage without level-shifter

The NuMicro

® M261/M262/M263 series integrates Voltage Adjustable Interface (VAI), up to 6 I/O

pins to support the 2nd I/O voltage from 1.7 ~ 3.6V to save level shifter components while

connecting to external devices.

Secure Digital Host Controller (SDHC)

The NuMicro

M261/M262/M263 series integrates one set of Secure Digital Host Controller

(SDHC), which is compliant with SD Memory Card Specification Version 2.0. It supports 50 MHz

to achieve 200 Mbps at 3.3V operation, and dedicated DMA master with Scatter-Gather function

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