PIC17C4X Datasheet, PDF (47/240 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM/ROM Microcontroller

PIC17C4X
FIGURE 7-6: CONSECUTIVE TABLWT WRITE TIMING (EXTERNAL MEMORY)
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
AD15:AD0
Instruction
fetched
Instruction
executed
ALE
OE
WR
PC
PC+1
TBL1 Data out 1 PC+2
TBL2 Data out 2 PC+3
TABLWT1
TABLWT2
INST (PC+2)
INST (PC+3)
INST (PC-1) TABLWT1 cycle1 TABLWT1 cycle2 TABLWT2 cycle1 TABLWT2 cycle2
Data write cycle
Data write cycle
INST (PC+2)
© 1996 Microchip Technology Inc.
DS30412C-page 47