PIC24FJ128GA Datasheet, PDF (149/232 Pages) Microchip Technology – General Purpose, 16-Bit Flash Microcontrollers

PIC24FJ128GA FAMILY
FIGURE 17-5:
MASTER MODE, PARTIALLY MULTIPLEXED ADDRESSING (SEPARATE READ
AND WRITE STROBES, TWO CHIP SELECTS)
PIC24F
PMA<13:8>
PMD<7:0>
PMA<7:0>
PMCS1
PMCS2
PMALL
PMRD
PMWR
Address Bus
Multiplexed
Data and
Address Bus
Control Lines
FIGURE 17-6:
MASTER MODE, FULLY MULTIPLEXED ADDRESSING (SEPARATE READ AND
WRITE STROBES, TWO CHIP SELECTS)
PIC24F
PMD<7:0>
PMA<13:8>
PMCS1
PMCS2
PMALL
PMALH
PMRD
PMWR
Multiplexed
Data and
Address Bus
Control Lines
FIGURE 17-7:
EXAMPLE OF A MULTIPLEXED ADDRESSING APPLICATION
PIC24F
PMD<7:0>
PMALL
PMALH
373 ^A<7:0>
D<7:0>
A<15:8>
373
A<15:0>
D<7:0>
CE
OE WR
PMCS
PMRD
PMWR
Address Bus
Data Bus
Control Lines
FIGURE 17-8:
EXAMPLE OF A PARTIALLY MULTIPLEXED ADDRESSING APPLICATION
PIC24F
PMD<7:0>
PMALL
PMA<14:7>
PMCS
PMRD
PMWR
373
A<14:8>
A<7:0>
D<7:0>
A<14:0>
D<7:0>
CE
OE WR
Address Bus
Data Bus
Control Lines
© 2006 Microchip Technology Inc.
Preliminary
DS39747C-page 147