M258SG6AE Datasheet | Nuvoton Technology

DESCRIPTION The Nu Micro M254/M256/M258 is a 32-bit low-power, low-leakage microcontroller series based on Arm Cortex-M23 core using Armv8-M architecture with /SEG LCD display driver and capacitive touch key functions for HMI of smart appliance; an USB 2.0 full speed device is also equipped to support the munication with PC/Mobile accessories. It runs up to 48 MHz and features 64 to 256 Kbytes Flash, 8 to 32 Kbytes SRAM, 1.75V to 5.5V wide operating voltage, 5V I/O tolerance, and -40℃ to +105℃ operating temperature. It features Low-power Technology The M254/M256/M258 series provides low power consumption in Normal Run mode 110 μA/MHz at 48 MHz, Power-down mode with 2.5 μA while RTC on and RAM retention, and it can supports down to 1.6u A while RTC off, and Deep Power-down mode is down to 1.5 μA. The M254/M256/M258 series integrates RTC with independent VBAT voltage source pin to support low power mode with main power off and VBAT only. Its low power, wide supply voltage and fast wake-up features make it suitable for battery-powered devices. /SEG LCD Display Driver An 8 x 44, 6 x 46, 4 x 48 /SEG LCD is available on the M254/M256/M258 series. The /SEG LCD driver built-in charge-pump function to support 3V to 5V LCD panel, with selectable bias voltage (1/2, 1/3, 1/4) and duty (1/4, 1/6, 1/8). The feature makes it suitable for Handheld devices that need high display quality in the outdoor environment to provide constant contrast ratio. Capacitive Touch Key Sensing Function The M256/M258 series supports up to 24 independent capacitive touch key sensing function with singlescan or programmable periodic key-scans modes; it also provides high noise resistance in harsh requirement and easy-to-use calibration tool regarding to development and mass production phase. Crystal-less USB 2.0 full speed device plied with BC 1.2 The M258 series supports a crystal-less USB 2.0 full speed device that supports precise frequency required for USB protocol to reduce the BOM cost and PCB...