PIC16F819 Microchip Technology Inc., PIC16F819 Datasheet - Page 8

• Manufacturer Part Number: PIC16F819
• Description: 18/20-pin Enhanced Flash Microcontrollers With Nanowatt Technology
• Manufacturer: Microchip Technology Inc.

PIC16F818/819
FIGURE 1-1:
DS39598E-page 6
RA6/OSC2/CLKO
RA7/OSC1/CLKI
Note 1:
10-bit, 5-channel
Timer0
A/D
Program
Higher order bits are from the Status register.
Bus
Instruction reg
Generation
Instruction
1K/2K x 14
Decode &
14
Memory
Control
Program
Timing
Flash
PIC16F818/819 BLOCK DIAGRAM
Synchronous
Serial Port
Timer1
8
13
MCLR
Direct Addr
Start-up Timer
Program Counter
8-Level Stack
Brown-out
Watchdog
Power-up
Power-on
Oscillator
Timer
Reset
Timer
Reset
(13-bit)
V
DD
, V
Timer2
CCP1
SS
7
RAM Addr
8
3
128/256 x 8
(1)
Data Bus
Addr MUX
Registers
W reg
ALU
RAM
128/256 Bytes
File
Data EE
Status reg
8
FSR reg
9
MUX
Indirect
Addr
8
PORTB
PORTA
 2004 Microchip Technology Inc.
RA0/AN0
RA1/AN1
RA2/AN2/V
RA3/AN3/V
RA4/AN4/T0CKI
RA5/MCLR/V
RA6/OSC2/CLKO
RA7/OSC1/CLKI
RB0/INT
RB1/SDI/SDA
RB2/SDO/CCP1
RB3/CCP1/PGM
RB4/SCK/SCL
RB5/SS
RB6/T1OSO/T1CKI/PGC
RB7/T1OSI/PGD
REF
REF
PP
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