PIC16F819 Microchip Technology Inc., PIC16F819 Datasheet - Page 44

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

PIC16F818/819
FIGURE 5-7:
DS39598E-page 42
Note 1: I/O pins have protection diodes to V
Data
Bus
WR
PORTA
WR
TRISA
RD PORTA
TRIS Latch
D
Data Latch
D
CK
CK
RD TRISA
BLOCK DIAGRAM OF RA7/OSC1/CLKI PIN
Q
Q
Q
Q
From OSC2
Q
EN
D
Oscillator
F
Circuit
OSC
DD
and V
= 10x
Schmitt Trigger
Input Buffer
(F
SS
OSC
F
.
OSC
= 011)
= 10x
V
V
P
N
DD
SS
 2004 Microchip Technology Inc.
V
V
DD
SS
RA7/OSC1/CLKI