M258KG6AE

The NuMicro M258KG6AE 32-bit microcontroller is based on Arm Cortex-M23 core using Armv8-M architecture with COM/SEG LCD driver, capacitive touch sensing function, and USB 2.0 full speed device.

It runs up to 48 MHz and features 256 Kbytes Flash memory, 32 Kbytets SRAM, 1.75V ~ 5.5V wide operating voltage, 5V I/O tolerance, and -40℃ to +105℃ operating temperature.

M258KG6AE includes a 4 x 44, 6 x 42, 8 x 40 COM/SEG LCD driver with selectable bias voltage and duty, and it also built-in charge-pump to support 3V to 5V wide voltage of LCD panel; Capacitive touch sensing function with up to 24 touch-keys with single-scan or programmable periodic key-scans is supported; it also equipped with a crystal-less USB 2.0 full speed device, compling with USB Battery Charging Detection v1.2 (BC 1.2) profile for high-speed battery charging.

M258KG6AE provides plenty of peripherals such as Timers, Watchdog Timers, RTC, 8 channels of PDMA, 4 sets of UART, 2 setof Universal Serial Control Interface (USCI), 2 sets of SPI/ I²S, 2 sets of I²C, 1 set of ISO-7816-3, 12 channels of basic PWM, making it highly suitable for connecting comprehensive external modules. It also integrates high performance analog circuit, such as 16 channels of 12-bit 730 kSPS ADC, 2 sets of 12-bit DAC for external voltage reference, and a temperature sensor to reduce external components.

Supported packages LQFP128 (14 mm x 14 mm) with pin-compatible for different part numbers make the system design and parts change easily.

Target Application:

Handheld meter
Thermostat
Smart Home / Home Appliance
Industrial Control / Industrial Automation
Temperature/Humidity Logger
Key Features:

• Operating Characteristics
- Voltage range: 1.75V ~ 5.5V
- Temperature range: - 40 ℃ ~ 105 ℃
- EFT 4.4 KV
- ESD HBM 7 KV

• Core
- Arm Cortex-M23 core using Armv8-M architecture, running up to 48 MHz, without TrustZone
- 32-bit hardware multiplier/divider

• Memories
- 256 KB Flash
- 32 KB SRAM
- 4 KB LDROM
- 1-region eXecute-Only-Memory (XOM)
- ISP/ICP/IAP programming

• Clocks
- 4 ~ 32 MHz external high speed crystal oscillator (HXT) for precise timing operation
- 32.768 kHz external low speed crystal oscillator (LXT) for RTC function and low-power system operation
- 48 MHz internal high speed RC oscillator (HIRC) for system operation (Factory pre-trimmed to ±0.25% and frequency deviation ±2.5% over entire temperature from -40°C ~ 105 °C)
- 4.032 MHz internal high speed RC oscillator (MIRC) for system operation
- 38.4 kHz internal low speed RC oscillator (LIRC) for Watchdog Timer and wake-up operation

• COM/SEG LCD Driver
- 4 x 44, 6 x 42, 8 x 40 COM/SEG LCD Driver
- Built-in charge-pump feature
- Supports 3V to 5V LCD panel
- Supports 1/2, 1/3 and 1/4 bias voltage
- Supports 1/4 duty, 1/6 duty and 1/8 duty

• Capacitive Touch Sensing
- Up to 24 touch keys with single-scan or programmable periodic key-scans features

• Power management
- Integrated with Power-on Reset, Brown-out Reset and Low Voltage Reset
- Built-in LDO Integrated with Power-on Reset, Brown-out Reset and Low Voltage Reset
- Built-in LDO
- Support RTC with independent VBAT voltage source pin

• Low Power Consumption
- 110 μA/MHz in operating mode
- 3.8 μA in Power-down mode (RTC on, RAM retention)
- 2.2 μA in Power-down mode (RTC off, RAM retention)
- 1.6 μA in Deep Power-down mode

• Timers
- Four 32-bit timers
- One 24-bit SysTick timer
- One independent watchdog
- One window watchdog
- RTC with Calendar and Alarm

• PDMA
- 8 channels

• Analog
- 16 channels of 12-bit 730 kSPS ADC
- 2 sets of 12-bit DAC
- 2 sets of rail-to-rail analog comparators (ACMP)

• Communication interfaces
- 4 sets of UART interfaces
- 2 set of I²C interfaces
- 2 set of SPI/I²S
- 1 set of Smart Card Interface (ISO-7816-3)
- 2 set of USCI (configured as UART, SPI or I²C)

• USB
- Up to 1 set of USB 2.0 full speed device with on-chip PHY (crystal-less design)
- Supports USB Battery Charging Detection v1.2 (BC 1.2) profile

• The Cryptographic Accelerator supports AES algorithms

• 96-bit Unique ID ( UID )

• 128-bit Unique Customer ID ( UCID )

• Packages
- LQFP128 (14 mm x 14 mm)