PIC17C7XX_13 Datasheet, PDF (60/306 Pages) Microchip Technology – High-Performance 8-bit CMOS EPROM Microcontrollers with 10-bit A/D

PIC17C7XX
FIGURE 8-3:
TLRD INSTRUCTION
OPERATION
TABLE POINTER
TBLPTRH
TBLPTRL
TABLE LATCH (16-bit)
TABLATH TABLATL
TLRD 1,f
TLRD 0,f
Data
Memory
Program Memory
f
1
Step 1: 8-bit value from TABLAT (16-bit) high or low byte,
loaded into register 'f'.
FIGURE 8-4:
TABLRD INSTRUCTION
OPERATION
TABLE POINTER
TBLPTRH
TBLPTRL
TABLE LATCH (16-bit)
TABLATH TABLATL
3
TABLRD 1,i,f
Data
Memory
3
TABLRD 0,i,f
Program Memory
f
1
Prog-Mem
(TBLPTR)
2
Step 1: 8-bit value from TABLAT (16-bit) high or low byte,
loaded into register 'f'.
2: 16-bit value at Program Memory (TBLPTR), loaded into
TABLAT register.
3: If “i” = 1, then TBLPTR = TBLPTR + 1,
If “i” = 0, then TBLPTR is unchanged.
DS30289C-page 60
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