PIC18LF4539-E/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18LF4539-E/SO

Enhanced FLASH Microcontrollers with Single Phase Induction Motor Control Kernel

Microchip Technology 

FIGURE 9-5:

PIC18FXX39

BLOCK DIAGRAM OF RB2:RB0 PINS

RBPU(2)

Data Bus

WR Port

WR TRIS

Data Latch

DQ

CK

TRIS Latch

DQ

CK

VDD

P

Weak

Pull-up

I/O pin(1)

TTL

Input

Buffer

RD TRIS

RD Port

QD

EN

RB0/INT

Schmitt Trigger

Buffer

Note 1: I/O pins have diode protection to VDD and VSS.

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

FIGURE 9-6:

BLOCK DIAGRAM OF RB3 PIN

RBPU(2)

‘1’

Data Bus

WR LATB or

WR PORTB

WR TRISB

RD TRISB

RD LATB

RD PORTB

Data Latch

DQ

CK

TRIS Latch

D

CK Q

Q

D

EN

VDD

P

Weak

Pull-up

VDD

P

N

VSS

TTL

Input

Buffer

I/O pin(1)

Note 1: I/O pin has diode protection to VDD and VSS.

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

 2002-2013 Microchip Technology Inc.

Preliminary

DS30485B-page 87

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