PIC16F747-ISP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F747-ISP

28/40/44-Pin, 8-Bit CMOS Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

Microchip Technology 

PIC16F7X7

FIGURE 5-3:

BLOCK DIAGRAM OF RA2/AN2/VREF-/CVREF PIN

Data

Bus

WR

PORTA

WR

TRISA

D

Q

CK Q

Data Latch

D

Q

CK Q

TRIS Latch

VDD

P

N

VSS Analog

Input Mode

RA2/AN2/VREF-/

CVREF pin

RD TRISA

RD PORTA

Q

D

EN

TTL

Input Buffer

To Comparator

To A/D Module VREF-

To A/D Module Channel Input

CVROE

CVREF

FIGURE 5-4:

BLOCK DIAGRAM OF RA4/T0CKI/C1OUT PIN

Data

Bus

WR

PORTA

WR

TRISA

D

Q

CK Q

Data Latch

D

Q

CK Q

TRIS Latch

Comparator Mode = 011, 101, 001

Comparator 1 Output

1

0

Analog

Input Mode

RD TRISA

N

VSS

Schmitt Trigger

Input Buffer

Q

D

RA4/T0CKI/

C1OUT pin

EN

RD PORTA

TMR0 Clock Input

 2004 Microchip Technology Inc.

DS30498C-page 51

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