Features
■ RISC-V Andes N22 Core
● RISC-V instruction-set architecture (RV32I)
● Maximum operating frequency: 32 MHz
● Andes Physical Memory Protection unit (Andes PMP)
● Debug and Trace: RISC-V External Debug Support
● Debug Port: JTAG
■ Memory
● 48-KB code flash memory
● 16 KB SRAM
● Memory protection units
● 128-bit unique ID
■ Connectivity
● Serial Communications Interface (SCI) × 1
– Asynchronous interfaces
– 8-bit clock synchronous interface
– Simple IIC
– Simple SPI
– Smart card interface
■ Analog
● 12-bit A/D Converter (ADC12) with 3 sample-and-hold-circuits
(S/H)
● Programmable Gain Amplifier (PGA) × 3
● High-Speed Analog Comparator (ACMPHS) × 2
● 8-bit D/A Converter (DAC8) × 2
● Temperature Sensor (TSN)
■ Timers
● General PWM Timer 16-bit (GPT) × 6
● Watchdog Timer (WDT)
■ Safety
● SRAM parity and ECC error check
● Flash area protection
● ADC self-diagnosis function
● Clock Frequency Accuracy Measurement Circuit (CAC)
● Cyclic Redundancy Check (CRC) calculator
● Data Operation Circuit (DOC)
● Port Output Enable for GPT (POEG)
● Independent Watchdog Timer (IWDT)
● GPIO readback level detection
● Register write protection
● Illegal memory access detection
■ System and Power Management
● Low power modes
● Data Transfer Controller (DTC)
● Power-on reset
● Low Voltage Detection (LVD) with voltage settings
■ Multiple Clock Sources
● High-speed on-chip oscillator (HOCO) (24/32/48/64 MHz)
● Middle-speed on-chip oscillator (MOCO) (8 MHz)
● Low-speed on-chip oscillator (LOCO) (32.768 kHz)
● Clock trim function for HOCO
● IWDT-dedicated on-chip oscillator (15 kHz)
● Clock out support
■ Up to 28 pins for general I/O ports
● Open drain, input pull-up
■ Operating Voltage
● VCC: 2.7 to 5.5 V
■ Operating Temperature and Packages
● Ta = -40℃ to +125℃
– 32-pin HWQFN (5 mm × 5 mm, 0.5 mm pitch)
– 24-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch)