特性 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)