GENERAL DESCRIPTION
The PIC16C55X(A) are 18 and 20-Pin EPROM-based members of the versatile PIC16CXX family of low-cost, high-performance, CMOS, fully-static, 8-bit microcontrollers.

High Performance RISC CPU:
• Only 35 instructions to learn
• All single-cycle instructions (200 ns), except for
   program branches which are two-cycle
• Operating speed:
   - DC - 20 MHz clock input
   - DC - 200 ns instruction cycle
• Interrupt capability
• 16 special function hardware registers
• 8-level deep hardware stack
• Direct, Indirect and Relative addressing modes

Peripheral Features:
• 13 I/O pins with individual direction control
• High current sink/source for direct LED drive
• Timer0: 8-bit timer/counter with 8-bit
   programmable prescaler

Special Microcontroller Features:
• 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

Special Microcontroller Features (cont’d)
• Programmable code protection
• Power saving SLEEP mode
• Selectable oscillator options
• Serial in-circuit programming (via two pins)
• Four user programmable ID locations

CMOS Technology:
• Low-power, high-speed CMOS EPROM technology
• Fully static design
• Wide operating voltage range
   - 2.5V to 5.5V PIC16C55X
   - 3.0 to 5.5V PIC16C55XA
• Commercial, industrial and extended temperature range
• Low power consumption
   - < 2.0 mA @ 5.0V, 4.0 MHz
   - 15 µA typical @ 3.0V, 32 kHz
   - < 1.0 µA typical standby current @ 3.0V