CH32V003F4U6

Part: CH32V003F4U6

Type: 32-bit RISC-V Microcontroller (QingKe RISC-V2A core)

Description: Industrial-grade RV32EC MCU with up to 48 MHz system clock, 16 KB Flash, 2 KB SRAM, 10-bit ADC, and a 2.7–5.5 V supply range, in a QFN20 package.

Operating Conditions:

• Supply voltage: 2.7–5.5 V (ADC not used); 2.8–5.5 V recommended when the ADC is used
• Operating temperature: -40 to 85 °C (ambient); junction -40 to 105 °C
• Internal AHB clock: up to 50 MHz (Table 3-2); system clock rated at 48 MHz

Absolute Maximum Ratings:

• Max supply voltage (VDD–VSS): 5.5 V (min -0.3 V)
• Input voltage on FT (5 V tolerant) pins: VSS-0.3 to 5.5 V
• Input voltage on other pins: VSS-0.3 to VDD+0.3
• Total current through VDD: 100; total current through VSS: 80
• Sink current on any I/O: 20 mA; output current on any I/O: -20 mA
• Injection current per pin: ±4 mA; total injection current: ±20 mA
• Storage temperature: -40 to 125 °C
• ESD (HBM): 4 kV

Key Specs:

• Core: QingKe RV32EC, up to 48 MHz system clock
• Memory: 16 KB CodeFlash, 2 KB SRAM, 1920 B BootLoader area
• ADC: 10-bit, 8 external and 2 internal channels, input range 0 to VDD
• GPIO: 18 I/O pins across 3 ports
• Timers: 1 16-bit advanced timer, 1 16-bit general-purpose timer, 2 watchdogs, 32-bit SysTick
• Communication: 1 USART, 1 I2C, 1 SPI
• Clocks: 24 MHz factory-calibrated HSI, 128 kHz LSI, 4–25 MHz external HSE
• Power-on/power-down: VDD rise rate 0 to ∞ µs/V; fall rate min 20 µs/V

Features:

• 2-level interrupt nesting with a fast programmable interrupt controller (PFIC) and hardware interrupt stack
• 7-channel DMA controller with circular buffer support
• Operational amplifier/comparator connected to the ADC and TIM2
• Sleep and Standby low-power modes
• POR/PDR and programmable voltage detector (PVD)
• Clock security with automatic switch to the internal RC oscillator
• 96-bit unique chip ID
• Single-wire serial debug interface

Applications:

• General-purpose industrial embedded control
• Motor control (complementary PWM with dead-time and brake)

Package:

• QFN20 (CH32V003F4U6)
• Other family packages: TSSOP20, SOP16, SOP8

• Core
• QingKe 32-bit RISC-V core, RV32EC instruction set
• Fast programmable interrupt controller + hardware interrupt stack
• Supports 2-level interrupt nesting
• Supports system clock frequency up to 48MHz

Figure 3-1 Typical Circuit for Conventional Power Supply

Exceeding the absolute maximum ratings may cause abnormal operation or even damage to the chip.