Microchip PIC12F1572T-I/MF: Datasheet, Features, and Application Circuits

The Microchip PIC12F1572T-I/MF is a powerful 8-bit microcontroller from the enhanced mid-range PIC® MCU family, packaged in an ultra-compact 8-DFN (2x3mm) housing. It is engineered for space-constrained, power-sensitive, and cost-driven applications, offering a rich set of peripherals that make it a versatile solution for a wide array of embedded designs.

Key Datasheet Specifications

Operating from 1.8V to 3.6V, this MCU is ideal for battery-powered devices. Its core runs at up to 16 MHz with an internal oscillator, and it features 3.5 KB of Flash program memory and 128 Bytes of RAM. A standout feature is its 256 Bytes of EEPROM data memory, which is invaluable for storing configuration parameters without needing an external chip. The device operates over an industrial temperature range (-40°C to +85°C), denoted by the "I" in its part number.

Core Features and Peripherals

The PIC12F1572 is packed with advanced peripherals that reduce system component count and cost.

Core Independent Peripherals (CIPs): It includes a Complementary Waveform Generator (CWG), a Configurable Logic Cell (CLC), and a 5-bit Digital-to-Analog Converter (DAC). These CIPs can operate without constant CPU intervention, enabling efficient and deterministic real-time control.

Analog Capabilities: It integrates a 10-bit Analog-to-Digital Converter (ADC) with up to 4 channels and an analog comparator, making it suitable for sensor interface applications.

Timing and Control: The module boasts multiple timers, including a 10-bit PWM module, providing precise control for motor drives and LED dimming.

Communication: It supports SPI, I2C, and RS-232 UART communication protocols, facilitated by a MSSP (Master Synchronous Serial Port) module and an EUSART (Enhanced Universal Synchronous Asynchronous Receiver Transmitter).

Application Circuits

The integration of these features enables compact and efficient circuit designs.

1. BLDC Motor Control: The Complementary Waveform Generator (CWG) is perfectly suited for controlling brushless DC (BLDC) motors. It can generate the necessary complementary PWM signals with dead-band control to drive a three-phase bridge, while the integrated analog comparator can be used for current sensing and over-current protection. The entire control loop can be highly autonomous, freeing the CPU for other tasks.

2. Sensor Hub with Logging: In a smart sensor node, the MCU's 10-bit ADC can read multiple analog sensors (e.g., temperature, light). The collected data can be processed and stored in the internal EEPROM, preserving information even during power loss. The EUSART or I2C peripheral can then transmit this logged data to a central hub or display upon request.

3. Custom Logic Interface: The Configurable Logic Cell (CLC) allows designers to create custom hardware-based logic functions (like AND, OR, gates) between input and output signals. This can be used to create a safety interlock or a trigger condition that operates at hardware speed, completely independent of the software execution, enhancing system reliability and response time.

ICGOOODFIND Summary

The Microchip PIC12F1572T-I/MF stands out as an exceptionally capable 8-bit MCU for its size. Its potent combination of Core Independent Peripherals (CIPs), robust analog features, and non-volatile data memory allows for the creation of highly integrated, responsive, and reliable designs in compact form factors. It is an excellent choice for applications demanding low power, minimal footprint, and high functional integration without a high cost.

Keywords:

1. 8-bit Microcontroller

2. Core Independent Peripherals (CIPs)

3. Complementary Waveform Generator (CWG)

4. EEPROM

5. Ultra-Low-Power