MCUs Offer USB Connectivity

The PIC16C745 and PIC16C765 one-time programmable, eight-bit microcontrollers support the universal serial bus (USB) 1.1 low-speed interface. Both devices provide 8K x 14 words of program memory and 256 bytes of RAM, an on-chip bandgap voltage reference, oscillator mode, brownout detection, enhanced capture/compare/pulse-width modulation, a USART interface, one 16-bit timer, two eight-bit timers, and a watchdog timer. The 28-pin PIC16C745 features 22 I/O ports and a five-channel, eight-bit a/d converter. The 40-pin PIC16C765 offers 33 I/O ports and an eight-channel, eight-bit a/d converter. The new devices feature a unique software detachment capability that allows a peripheral to remove itself from the system without removing the cable. This feature also allows systems to be reconfigured under the peripheral control as a completely different device without removing the cable. Available in PDIPs, pricing is $2.84 for the PIC16C745 and $3.69 for the PIC16C765, each/1000.