PIC16F819 Datasheet

IC型号：
PIC16F819
PDF描述：
18/20-Pin Enhanced Flash Microcontrollers with nanoWatt Tech...
文件大小：
68.31KB
PDF页数：
176页
芯片厂家：
MICROCHIP

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PIC16F818/819

TABLE 5-3:

Name

RB0/INT

RB1/SDI/SDA

RB2/SDO/CCP1

PORTB FUNCTIONS

Bit#

bit 0

bit 1

bit 2

Buffer

Function

TTL/ST

(1)

Input/output pin or external interrupt input.

Internal software programmable weak pull-up.

TTL/ST

(5)

Input/output pin, SPI data input pin or I

C data I/O pin.

Internal software programmable weak pull-up.

TTL/ST

(4)

Input/output pin, SPI data output pin or

Capture input/Compare output/PWM output pin.

Internal software programmable weak pull-up.

TTL/ST

(2)

Input/output pin, Capture input/Compare output/PWM output pin

or programming in LVP mode. Internal software programmable

weak pull-up.

TTL/ST

(5)

Input/output pin or SPI and I

C clock pin (with interrupt-on-change).

Internal software programmable weak pull-up.

TTL

Input/output pin or SPI slave select pin (with interrupt-on-change).

Internal software programmable weak pull-up.

RB3/CCP1/PGM

(3)

bit 3

RB4/SCK/SCL

RB5/SS

RB6/T1OSO/T1CKI/

PGC

RB7/T1OSI/PGD

bit 4

bit 5

bit 6

TTL/ST

(2)

Input/output pin, Timer1 oscillator output pin, Timer1 clock input pin or

serial programming clock (with interrupt-on-change).

Internal software programmable weak pull-up.

TTL/ST

(2)

Input/output pin, Timer1 oscillator input pin or serial programming data

(with interrupt-on-change).

Internal software programmable weak pull-up.

bit 7

Legend:

TTL = TTL input, ST = Schmitt Trigger input

Note 1:

This buffer is a Schmitt Trigger input when configured as the external interrupt.

This buffer is a Schmitt Trigger input when used in Serial Programming mode.

Low-Voltage ICSP Programming (LVP) is enabled by default which disables the RB3 I/O function. LVP

must be disabled to enable RB3 as an I/O pin and allow maximum compatibility to the other 18-pin

mid-range devices.

This buffer is a Schmitt Trigger input when configured for CCP or SSP mode.

This buffer is a Schmitt Trigger input when configured for SPI or I

C mode.

TABLE 5-4:

Address

SUMMARY OF REGISTERS ASSOCIATED WITH PORTB

Name

Bit 7

RB7

RBPU

Bit 6

RB6

INTEDG

Bit 5

RB5

T0CS

Bit 4

RB4

T0SE

Bit 3

RB3

PSA

Bit 2

RB2

PS2

Bit 1

RB1

PS1

Bit 0

Value on

POR, BOR

Value on

all other

Resets

06h, 106h PORTB

86h, 186h TRISB

81h, 181h Option

RB0

xxxx xxxx uuuu uuuu

1111 1111 1111 1111

PS0

1111 1111 1111 1111

PORTB Data Direction Register

Legend:

= unknown,

= unchanged. Shaded cells are not used by PORTB.

DS39598D-page 44

Preliminary

铮?/div>

2003 Microchip Technology Inc.

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