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can any one explain program counter in pic 16f877a??explain the below code

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rangerskm

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Code: 
goto K
Go to label 'k' instruction

Operand: 0 ≤ K ≤ 2047 (11-bit address is specified)
Operation: K PC <10:0>
PCLATH <4:3> PC <12:11>

whats pclath <4:3> PC <12:11>
 

Read section 2.3 & 2.4 page 30 of the datasheet. K is not big enough to address the whole memory space so the upper bits come from PCLATH. The program counter is 13 bits but K is only 11 bits.

Keith
 

what means pclath<4:3>PC<12:11>??
 

rangerskm said:
what means pclath<4:3>PC<12:11>??
Click to expand...

You are misquoting the datasheet. What it says is:


Which means k is copied to the first 11 bits of the program counter (PC) and bits PCLATH bits 4 and 3 are copied to bits 12 and 11 of PC respectively.

Keith
 

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