PIC18F6X2X datasheet(76/386 Pages) MICROCHIP

76 / 386 page

PIC18F6X2X/8X2X

DS39612A-page 74

Advance Information

 2003 Microchip Technology Inc.

If the device fetches or accesses external memory

while EBDIS = 1, the pins will switch to external bus. If

the EBDIS bit is set by a program executing from

external memory, the action of setting the bit will be

delayed until the program branches into the internal

memory. At that time, the pins will change from

external bus to I/O ports.

When the device is executing out of internal memory

(EBDIS = 0) in Microprocessor with Boot Block mode

or Extended Microcontroller mode, the control signals

will NOT be active. They will go to a state where the

AD<15:0> and A<19:16> are tri-state; the CE, OE,

WRH, WRL, UB and LB signals are ‘1’, and ALE and

BA0 are ‘0’.

TABLE 6-1:

PIC18F8X2X EXTERNAL BUS - I/O PORT FUNCTIONS

Name

Port

Bit

Function

RD0/AD0

PORTD

bit 0

Input/Output or System Bus Address bit 0 or Data bit 0

RD1/AD1

PORTD

bit 1

Input/Output or System Bus Address bit 1 or Data bit 1

RD2/AD2

PORTD

bit 2

Input/Output or System Bus Address bit 2 or Data bit 2

RD3/AD3

PORTD

bit 3

Input/Output or System Bus Address bit 3 or Data bit 3

RD4/AD4

PORTD

bit 4

Input/Output or System Bus Address bit 4 or Data bit 4

RD5/AD5

PORTD

bit 5

Input/Output or System Bus Address bit 5 or Data bit 5

RD6/AD6

PORTD

bit 6

Input/Output or System Bus Address bit 6 or Data bit 6

RD7/AD7

PORTD

bit 7

Input/Output or System Bus Address bit 7 or Data bit 7

RE0/AD8

PORTE

bit 0

Input/Output or System Bus Address bit 8 or Data bit 8

RE1/AD9

PORTE

bit 1

Input/Output or System Bus Address bit 9 or Data bit 9

RE2/AD10

PORTE

bit 2

Input/Output or System Bus Address bit 10 or Data bit 10

RE3/AD11

PORTE

bit 3

Input/Output or System Bus Address bit 11 or Data bit 11

RE4/AD12

PORTE

bit 4

Input/Output or System Bus Address bit 12 or Data bit 12

RE5/AD13

PORTE

bit 5

Input/Output or System Bus Address bit 13 or Data bit 13

RE6/AD14

PORTE

bit 6

Input/Output or System Bus Address bit 14 or Data bit 14

RE7/AD15

PORTE

bit 7

Input/Output or System Bus Address bit 15 or Data bit 15

RH0/A16

PORTH

bit 0

Input/Output or System Bus Address bit 16

RH1/A17

PORTH

bit 1

Input/Output or System Bus Address bit 17

RH2/A18

PORTH

bit 2

Input/Output or System Bus Address bit 18

RH3/A19

PORTH

bit 3

Input/Output or System Bus Address bit 19

RJ0/ALE

PORTJ

bit 0

Input/Output or System Bus Address Latch Enable (ALE) Control pin

RJ1/OE

PORTJ

bit 1

Input/Output or System Bus Output Enable (OE) Control pin

RJ2/WRL

PORTJ

bit 2

Input/Output or System Bus Write Low (WRL) Control pin

RJ3/WRH

PORTJ

bit 3

Input/Output or System Bus Write High (WRH) Control pin

RJ4/BA0

PORTJ

bit 4

Input/Output or System Bus Byte Address bit 0

RJ5/CE

PORTJ

bit 5

Input/Output or System Bus Chip Enable (CE) Control pin

RJ6/LB

PORTJ

bit 6

Input/Output or System Bus Lower Byte Enable (LB) Control pin

RJ7/UB

PORTJ

bit 7

Input/Output or System Bus Upper Byte Enable (UB) Control pin

PIC18F6X2X Datasheet(PDF) 76 Page - Microchip Technology

PIC18F6X2X Datasheet(HTML) 76 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL