Technical data sheet for the CX32L003 low‑power 32‑bit ARM Cortex‑M0+ microcontroller.
The CX32L003 is a 32‑bit microcontroller built around an ARM® Cortex®‑M0+ core that runs up to 24 MHz. It integrates up to 64 KB of embedded Flash, 4 KB SRAM, a 12‑bit 1 Msps SAR ADC, RTC, comparators, multiple UARTs, SPI, I²C, PWM and other peripherals, targeting low‑power applications.
The device operates from 2.5 V to 5.5 V, supports three power modes (Active, Sleep, Deep‑Sleep), and is offered in TSSOP‑20 and QFN‑20 packages with 16 GPIO pins in the 20‑pin versions. Detailed electrical characteristics, pin‑out tables and package information are provided in the following sections. This manual is written in Chinese.
| CPU core | ARM Cortex‑M0+ up to 24 MHz |
|---|---|
| Flash memory | 32 KB or 64 KB embedded Flash |
| SRAM | 4 KB |
| Operating voltage | 2.5 V – 5.5 V |
| Operating temperature | -40 °C – +85 °C |
| ADC | 7‑channel 12‑bit 1 Msps SAR ADC |
| UART interfaces | UART0, UART1 (standard) + low‑power LPUART |
| SPI speed | up to 8 Mbps |
| I²C speed | up to 1 Mbps (master), 800 kbps (slave) |
| GPIO pins (20‑pin package) | 16 I/O pins |
The CX32L003 works from 2.5 V to 5.5 V.
The 20‑pin TSSOP/QFN package provides 16 general‑purpose I/O pins.
The core can run up to 24 MHz.
It includes a 7‑channel 12‑bit SAR ADC.