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

1.0

DEVICE OVERVIEW

TABLE 1-1:

This document contains device specific information for

the operation of the PIC16F818/819 devices. Additional

information may be found in the PICmicro

庐

Mid-Range

MCU Family Reference Manual (DS33023), which may

be downloaded from the Microchip web site. The

Reference Manual should be considered a complemen-

tary document to this data sheet, and is highly

recommended reading for a better understanding of the

device architecture and operation of the peripheral

modules.

The PIC16F818/819 belongs to the Mid-Range family

of the PICmicro

庐

devices. The devices differ from each

other in the amount of Flash program memory, data

memory and data EEPROM (see Table 1-1). A block

diagram of the devices is shown in Figure 1-1. These

devices contain features that are new to the PIC16

product line:

鈥?Internal RC oscillator with eight selectable

frequencies, including 31.25 kHz, 125 kHz,

250 kHz, 500 kHz, 1 MHz, 2 MHz, 4 MHz and

8 MHz. The INTRC can be configured as the

system clock via the configuration bits. Refer to

Section 4.5 鈥淚nternal Oscillator Block鈥?/span>

and

Section 12.1 鈥淐onfiguration Bits鈥?/span>

for further

details.

鈥?The Timer1 module current consumption has

been greatly reduced from 20

碌A

(previous PIC16

devices) to 1.8

碌A

typical (32 kHz at 2V), which is

ideal for real-time clock applications. Refer to

Section 6.0 鈥淭imer0 Module鈥?/span>

for further details.

鈥?The amount of oscillator selections has increased.

The RC and INTRC modes can be selected with

an I/O pin configured as an I/O or a clock output

OSC

/4). An external clock can be configured

with an I/O pin. Refer to

Section 4.0 鈥淥scillator

Configurations鈥?/span>

for further details.

AVAILABLE MEMORY IN

PIC16F818/819 DEVICES

Program

Flash

1K x 14

2K x14

Data

Memory

128 x 8

256 x 8

Data

EEPROM

128 x 8

256 x 8

Device

PIC16F818

PIC16F819

There are 16 I/O pins that are user configurable on a

pin-to-pin basis. Some pins are multiplexed with other

device functions. These functions include:

鈥?/div>

External Interrupt

Change on PORTB Interrupt

Timer0 Clock Input

Low-Power Timer1 Clock/Oscillator

Capture/Compare/PWM

10-bit, 5-channel Analog-to-Digital Converter

SPI/I

MCLR (RA5) can be configured as an Input

Table 1-2 details the pinout of the devices with

descriptions and details for each pin.

铮?/div>

2003 Microchip Technology Inc.

Preliminary

DS39598D-page 5

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