There are several enhancements added to the newer devices. Some peripheral enhancements are shown here. The SMBus now provides hardware addressing and acknowledgement to reduce the firmware overhead required to service transfers. The port match feature allows system events to be triggered by a logic value change on Port 0 or Port 1. These events can be used to generate interrupts or wake the MCU from the suspended state. The PCA provides new modes to generate different PWM signaling. In addition to the standard 8 or 16-bit PWM options found on the C8051F34A family, the C8051T62x and C8051T32x families include 9, 10, and 11-bit PWM options in hardware.

