 English |
|
|
|
|
|
|
|
| PIC16F818_13 Datasheet, PDF (49/178 Pages) Microchip Technology – 18/20-Pin Enhanced Flash Microcontrollers with nanoWatt Technology | |||
| |||
| ◁ |
PIC16F818/819
FIGURE 5-12:
BLOCK DIAGRAM OF RB4 PIN
Port/SSPEN
SCK/SCL
1
0
RBPU(2)
Data Bus
WR
PORTB
WR
TRISB
Data Latch
DQ
CK
TRIS Latch
DQ
CK
RD TRISB
SCL Drive
RD PORTB
Set RBIF
From other
RB7:RB4 pins
SCK
SCL(3)
VDD
P
Weak
Pull-up
VDD
P
N
I/O pin(1)
VSS
TTL
Input
Buffer
Latch
QD
EN
Q1
QD
RD PORTB
EN
Q3
Note 1: I/O pins have diode protection to VDD and VSS.
2: To enable weak pull-ups, set the appropriate TRIS bit(s) and clear the RBPU bit.
3: The SCL Schmitt Trigger conforms to the I2C⢠specification.
ï£ 2001-2013 Microchip Technology Inc.
DS39598F-page 49
|
▷ |
German
Russian
Spanish
Italian
Polish
Chinese
Japanese
Korean
French
Portuguese