PIC18F66K22-I/PTRSL View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18F66K22-I/PTRSL

64/80-Pin, High-Performance, 1-Mbit Enhanced Flash Microcontrollers with 12-Bit A/D and nanoWatt XLP Technology

Microchip Technology 

PIC18F87K22 FAMILY

8.6.4 16-BIT MODE TIMING

The presentation of control signals on the External

Memory Bus is different for the various operating

modes. Typical signal timing diagrams are shown in

Figure 8-4 and Figure 8-5.

FIGURE 8-4:

EXTERNAL MEMORY BUS TIMING FOR TBLRD

(EXTENDED MICROCONTROLLER MODE)

Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4

A<19:16>

AD<15:0>

CE

ALE

OE

Memory

Cycle

Instruction

Execution

Opcode Fetch

TBLRD *

from 000100h

INST(PC – 2)

0Ch

CF33h

9256h

Opcode Fetch

MOVLW 55h

from 000102h

TBLRD Cycle 1

TBLRD 92h

from 199E67h

TBLRD Cycle 2

Opcode Fetch

ADDLW 55h

from 000104h

MOVLW

FIGURE 8-5:

EXTERNAL MEMORY BUS TIMING FOR SLEEP

(EXTENDED MICROCONTROLLER MODE)

Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1

A<19:16>

AD<15:0>

CE

ALE

OE

Memory

Cycle

Instruction

Execution

00h

3AAAh

0003h

00h

3AABh

0E55h

Opcode Fetch

SLEEP

from 007554h

INST(PC – 2)

Opcode Fetch

MOVLW 55h

from 007556h

SLEEP

Sleep Mode, Bus Inactive

DS39960D-page 128

 2009-2011 Microchip Technology Inc.

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