PIC16F627-04 Microchip Technology, PIC16F627-04 Datasheet - Page 36

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

PIC16F62X
FIGURE 5-9:
DS40300B-page 36
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 data output
Data Bus
Peripheral OE
USART receive input
BLOCK DIAGRAM OF RB1/TX/DT PIN
(2)
WR PORTB
WR TRISB
(1)
RD PORTB
RD TRISB
TRIS Latch
Data Latch
D
D
CK
CK
Q
Q
Q
Q
Preliminary
Schmitt
Trigger
0
1
RBPU
Q
EN
D
TTL
input
buffer
V
V
P
N
SS
1999 Microchip Technology Inc.
DD
RD PORTB
V
P
DD
weak pull-up
V
V
DD
SS
RB1/RX/DT
pin