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2003 Microchip Technology Inc.
Preliminary
DS41206A-page 17
PIC16F716
2.3
PCL and PCLATH
The Program Counter (PC) specifies the address of the
instruction to fetch for execution. The PC is 13 bits
wide. The low byte is called the PCL register. This
register is readable and writable. The high byte is
called the PCH register. This register contains the
PC<12:8> bits and is not directly readable or writable.
All updates to the PCH register go through the PCLATH
register.
2.3.1
MODIFYING PCL
Executing any instruction with the PCL register as the
destination simultaneously causes the Program
Counter PC<12:8> bits (PCH) to be replaced by the
contents of PCLATH register. This allows the entire
contents of the program counter to be changed by first
writing the desired upper 5 bits to the PCLATH register.
When the lower 8 bits are then written to the PCL
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