PIC18F1220 View Datasheet(PDF) - Microchip Technology

Part Name

Description

MFG CO.

PIC18F1220

18/20/28-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

Microchip Technology 

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PIC18F1220/1320

FIGURE 10-10: BLOCK DIAGRAM OF RB3/CCP1/P1A PIN

ECCP1(3) pin Output Enable

ECCP1(4) pin Input Enable

RBPU(2)

P1A/C Tri-State Auto-Shutdown

ECCP1/P1A Data Out

Data Bus

WR LATB or

PORTB

WR TRISB

RD LATB

D

Q

CK Q

Data Latch

D

Q

CK Q

TRIS Latch

RD TRISB

RD PORTB

ECCP1 Input

VDD

P

Weak

Pull-up

1

VDD

P

0

N

VSS

TTL Input

Buffer

RB3 pin

Q

D

EN

Schmitt

Trigger

Note 1:

2:

3:

4:

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

To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit (INTCON2<7>).

ECCP1 pin output enable active for any PWM mode and Compare mode, where CCP1M<3:0> = 1000 or 1001.

ECCP1 pin input enable active for Capture mode only.

© 2007 Microchip Technology Inc.

DS39605F-page 93

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