PIC17C75X Datasheet, PDF (59/320 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM Microcontrollers

PIC17C75X
FIGURE 8-6: 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)
© 1997 Microchip Technology Inc.
Preliminary
DS30264A-page 59