CLB Synthesizer

The Configurable Logic Block (CLB) is a reconfigurable digital logic module integrated into the microcontroller (MCU) that performs hardware-based logic operations independently of the CPU.

The CLB peripheral on the PIC16F13145 family of microcontrollers comprises of 32 Basic Logic Elements (BLEs), allowing users to incorporate hardware-based custom logic into their applications. Each logic element’s Look-up Table (LUT)-based design offers extensive customization options, and the CPU-independent operation improves response time and power consumption. Other device families featuring the CLB peripheral may differ in the number of BLEs and additional functionalities. For more details, refer to the Known Issues and Change Log.

The user must configure elements as matrix multiplexers, LUTs, and flip-flops to achieve a given logic function, which is similar to the Configurable Logic Cell (CLC) on PIC® microcontrollers (MCUs) or the Configurable Custom Logic (CCL) on the AVR® MCUs. However, the matrix is much larger and is interconnected to a higher degree, which enables users to make more complex logic functions. To help users focus on the intended functionality of their logic design without having to understand the inner workings of the peripheral, Microchip provides a GUI (CLB Synthesizer) used for the Configurable Logic Block configuration.