CW32F003F4U7

CW32F003x3/x4 is an eFlash-based single-chip microcontroller integrating an ARM Cortex-M0+ core running at up to 48MHz, high-speed embedded memory (up to 20KB Flash and up to 3KB SRAM), and a comprehensive set of enhanced peripherals and I/O ports. All variants offer a full suite of communication interfaces (2× UART, 1× SPI, and 1× I2C), a 12-bit high-speed ADC, four general-purpose and basic timers, and one advanced-control PWM timer. The CW32F003x3/x4 operates over a temperature range of -40°C to 105°C with a wide supply voltage range of 1.65V to 5.5V, and supports two low-power operating modes: Sleep and DeepSleep.

Key features

• Up to 20K bytes FLASH, data retention 25 years @ 85°C
• Up to 3K bytes RAM with parity support
• 22 bytes OTP memory
• CRC hardware computation unit
• Low-power modes (Sleep, DeepSleep)
• Power-on and brown-out reset (POR/BOR)
• Programmable low voltage detector (LVD)
• Built-in 48MHz RC oscillator
• Built-in 32kHz RC oscillator
• Built-in 10kHz RC oscillator
• Built-in 150kHz RC oscillator
• External pin clock input
• Independent peripheral clock gating
• Interrupt support on all I/O pins
• Interrupt input filtering on all I/Os
• 12-bit resolution, ±1LSB
• Up to 1M SPS conversion rate
• Built-in voltage reference
• Analog watchdog function
• Built-in temperature sensor
• 16-bit advanced-control timer with 6 capture/compare channels, 3 complementary PWM output pairs, dead-time insertion, and flexible synchronization
• One 16-bit general-purpose timer
• Three 16-bit basic timers
• Window watchdog timer
• Independent watchdog timer
• Two low-power UARTs with fractional baud rate support
• One SPI interface at 12Mbit/s
• One I2C interface at 1Mbit/s
• IR modulator
• Serial wire debug interface (SWD)
• 80-bit unique ID