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16F819 데이터시트, 핀배열, 회로
www.DataSheet4U.com
PIC16F818/819
Data Sheet
18/20-Pin
Enhanced Flash Microcontrollers
with nanoWatt Technology
2004 Microchip Technology Inc.
DS39598E




16F819 pdf, 반도체, 판매, 대치품
PIC16F818/819www.DataSheet4U.com
Pin Diagrams
18-Pin PDIP, SOIC
RA2/AN2/VREF-
RA3/AN3/VREF+
RA4/AN4/T0CKI
RA5/MCLR/VPP
VSS
RB0/INT
RB1/SDI/SDA
RB2/SDO/CCP1
RB3/CCP1/PGM
1
2
3
4
5
6
7
8
9
18 RA1/AN1
17 RA0/AN0
16 RA7/OSC1/CLKI
15 RA6/OSC2/CLKO
14 VDD
13 RB7/T1OSI/PGD
12 RB6/T1OSO/T1CKI/PGC
11 RB5/SS
10 RB4/SCK/SCL
20-Pin SSOP
RA2/AN2/VREF-
RA3/AN3/VREF+
RA4/AN4/T0CKI
RA5/MCLR/VPP
VSS
VSS
RB0/INT
RB1/SDI/SDA
RB2/SDO/CCP1
RB3/CCP1/PGM
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
RA1/AN1
RA0/AN0
RA7/OSC1/CLKI
RA6/OSC2/CLKO
VDD
VDD
RB7/T1OSI/PGD
RB6/T1OSO/T1CKI/PGC
RB5/SS
RB4/SCK/SCL
28-Pin QFN
RA5/MCLR/VPP
NC
VSS
NC
VSS
NC
RB0/INT
1 21
2 20
3 19
4 PIC16F818/819 18
5 17
6 16
7 15
RA7/OSC1/CLKI
RA6/OSC2/CLKO
VDD
NC
VDD
RB7/T1OSI/PGD
RB6/T1OSO/T1CKI/PGC
DS39598E-page 2
2004 Microchip Technology Inc.

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16F819 전자부품, 판매, 대치품
www.DataSheet4U.com
1.0 DEVICE OVERVIEW
This document contains device specific information for
the operation of the PIC16F818/819 devices. Additional
information may be found in the “PICmicro® 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® 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:
• 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 “Internal Oscillator Block” and
Section 12.1 “Configuration Bits” for further
details.
• The Timer1 module current consumption has
been greatly reduced from 20 µA (previous PIC16
devices) to 1.8 µA typical (32 kHz at 2V), which is
ideal for real-time clock applications. Refer to
Section 6.0 “Timer0 Module” for further details.
• 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
(FOSC/4). An external clock can be configured
with an I/O pin. Refer to Section 4.0 “Oscillator
Configurations” for further details.
PIC16F818/819
TABLE 1-1: AVAILABLE MEMORY IN
PIC16F818/819 DEVICES
Device
Program
Flash
Data
Memory
Data
EEPROM
PIC16F818
PIC16F819
1K x 14
2K x14
128 x 8
256 x 8
128 x 8
256 x 8
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:
• 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/I2C
• MCLR (RA5) can be configured as an Input
Table 1-2 details the pinout of the devices with
descriptions and details for each pin.
2004 Microchip Technology Inc.
DS39598E-page 5

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