GENERAL DESCRIPTION
The PIC16C63A/65B/73B/74B devices are low cost, high performance, CMOS, fully-static, 8-bit micro controllers in the PIC16CXX mid-range family. All PICmicro® microcontrollers employ an advanced RISC architecture. The PIC16CXX microcontroller family has enhanced core features, eight-level deep stack and multiple internal and external interrupt sources. The separate instruction and data buses of the Harvard architecture allow a 14-bit wide instruction word with the separate 8-bit wide data. The two stage instruction pipeline allows all instructions to execute in a single cycle, except for program branches, which require two cycles. A total of 35 instructions (reduced instruction set) are available. Additionally, a large register set gives some of the architectural innovations
used to achieve a very high performance.

PIC16CXX Microcontroller Core Features:
• High performance RISC CPU
• Only 35 single word instructions to learn
• All single cycle instructions except for program branches which are two cycle
• Operating speed: DC - 20 MHz clock input
                           DC - 200 ns instruction cycle
• 4 K x 14 words of Program Memory,  192 x 8 bytes of Data Memory (RAM)
• Interrupt capability
• Eight-level deep hardware stack
• Direct, indirect and relative addressing modes
• Power-on Reset (POR)
• Power-up Timer (PWRT) and Oscillator Start-up Timer (OST)
• Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation
• Programmable code protection
• Power-saving SLEEP mode
• Selectable oscillator options
• Low power, high speed CMOS EPROM technology
• Wide operating voltage range: 2.5V to 5.5V
• High Sink/Source Current 25/25 mA
• Commercial, Industrial and Automotive temperature ranges
• Low power consumption:
- < 5 mA @ 5V, 4 MHz
- 23 µA typical @ 3V, 32 kHz
- < 1.2 µA typical standby current