PIC16C432-I View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16C432-I

OTP 8-Bit CMOS MCU with LIN Transceiver

Microchip Technology 

PIC16C432

FIGURE 4-4:

BLOCK DIAGRAM OF RA4 PIN

Data

Bus

WR

PORTA

WR

TRISA

D

Q

CK Q

Data Latch

D

Q

CK Q

TRIS Latch

Comparator Mode = 110

Comparator Output

N

RA4 Pin

Vss

RD TRISA

RD PORTA

Schmitt Trigger

Input Buffer

Q

D

EN

TMR0 Clock Input

TABLE 4-1: PORTA FUNCTIONS

Name

Bit #

Buffer

Type

RA0/AN0

bit0

ST

LINRX

bit1

ST

RA2/AN2/VREF

bit2

ST

RA3/AN3

bit3

ST

RA4/T0CKI

bit4

ST

Legend: ST = Schmitt Trigger input

Function

Input/output or comparator input.

LIN receive pin.

Input/output or comparator input or VREF output.

Input/output or comparator input/output.

Input/output or external clock input for TMR0 or comparator output. 

Output is open drain type.

TABLE 4-2: SUMMARY OF REGISTERS ASSOCIATED WITH PORTA

Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2

Bit 1

Bit 0

Value on:

POR

Value on

All Other

RESETS

05h

PORTA

—

85h

TRISA

—

—

— RA4

RA3

RA2

LINRX

RA0 ---x 0000 ---u 0000

—

— TRISA4 TRISA3 TRISA2 TLINRX(2) TRISA0 ---1 1111 ---1 1111

1Fh

CMCON C2OUT C1OUT —

—

CIS

CM2

CM1

CM0 00-- 0000 00-- 0000

9Fh

VRCON VREN VROE VRR —

VR3

VR2

VR1

VR0 000- 0000 000- 0000

Legend: — = Unimplemented locations, read as ‘0’, x = unknown, u = unchanged

Note 1: Shaded bits are not used by PORTA.

2: TLINRX must be set to ‘1’ at all times.

 2000-2013 Microchip Technology Inc.

Preliminary

DS41140C-page 19

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