PIC16F627-04 Microchip Technology, PIC16F627-04 Datasheet - Page 37

• Manufacturer Part Number: PIC16F627-04
• Description: FLASH-Based 8-Bit CMOS Microcontrollers
• Manufacturer: Microchip Technology

FIGURE 5-10: BLOCK DIAGRAM OF RB2/TX/CK PIN
1999 Microchip Technology Inc.
Note 1: Port/Peripheral select signal selects between port data and peripheral output.
Note 2: Peripheral OE( output enable) is only active if peripheral select is active.
PORT/PERIPHERAL Select
USART TX/CK output
Data Bus
Peripheral OE
USART Slave Clock in
(2)
WR PORTB
WR TRISB
(1)
RD PORTB
RD TRISB
TRIS Latch
Data Latch
D
D
CK
CK
Q
Q
Q
Q
Schmitt
Trigger
Preliminary
0
1
RBPU
Q
EN
EN
D
Vss
V
P
N
DD
PIC16F62X
TTL
input
buffer
RD PORTB
V
DS40300B-page 37
P
DD
weak pull-up
V
V
DD
SS
RB2/TX/CK
pin