PIC18F1220ESLASHPQTP datasheet(90/308 Pages) MICROCHIP

90 / 308 page

PIC18F1220/1320

DS39605F-page 88

FIGURE 10-2:

BLOCK DIAGRAM OF

RA3:RA0 PINS

FIGURE 10-3:

BLOCK DIAGRAM OF

OSC2/CLKO/RA6 PIN

FIGURE 10-4:

BLOCK DIAGRAM OF

RA4/T0CKI PIN

FIGURE 10-5:

BLOCK DIAGRAM OF

OSC1/CLKI/RA7 PIN

Data

Bus

WR LATA

WR TRISA

Data Latch

TRIS Latch

RD TRISA

RD PORTA

VSS

VDD

I/O pin(1)

Note 1:

I/O pins have protection diodes to VDD and VSS.

Analog

Input

Mode

To A/D Converter and LVD Modules

RD LATA

PORTA

Schmitt

Trigger

Input

Buffer

Data

Bus

WR LATA

Data Latch

TRIS Latch

RD PORTA

VSS

VDD

I/O pin(1)

Note 1:

I/O pins have protection diodes to VDD and VSS.

PORTA

RD LATA

RA6 Enable

ECIO or

Enable

RCIO

TRISA

Schmitt

Trigger

Input

Buffer

Data

Bus

WR TRISA

RD PORTA

Data Latch

TRIS Latch

Schmitt

Trigger

Input

Buffer

VSS

I/O pin(1)

TMR0 Clock Input

RD LATA

WR LATA

PORTA

Note 1:

I/O pins have protection diodes to VDD and VSS.

RD TRISA

Data

Bus

WR LATA

Data Latch

TRIS Latch

RD PORTA

VSS

VDD

I/O pin(1)

Note 1:

I/O pins have protection diodes to VDD and VSS.

PORTA

RD LATA

Enable

RA7

TRISA

RA7 Enable

To Oscillator

Schmitt

Trigger

Input

Buffer

PIC18F1220E/PQTP Datasheet(PDF) 90 Page - Microchip Technology

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