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PIC16F628A-I/ML Datasheet(PDF) 39 Page - Microchip Technology

Part # PIC16F628A-I/ML
Description  FLASH-Based 8-Bit CMOS Microcontrollers
PDF  168 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F628A-I/ML Datasheet(HTML) 39 Page - Microchip Technology

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 2002 Microchip Technology Inc.
Preliminary
DS40044A-page 37
PIC16F627A/628A/648A
FIGURE 5-8:
BLOCK DIAGRAM OF
RB0/INT PIN
FIGURE 5-9:
BLOCK DIAGRAM OF
RB1/RX/DT PIN
Data Bus
WR PORTB
WR TRISB
RD PORTB
Data Latch
TRIS Latch
RB0/INT
INT
Q
D
CK
EN
QD
EN
RD TRISB
RBPU
P
V
DD
V
DD
V
SS
Q
Q
D
CK
Q
Weak Pull-up
Schmitt
TTL
Input
Buffer
Trigger
Data Latch
TRIS Latch
RD TRISB
Q
D
Q
CK
Q
D
Q
CK
1
0
WR PORTB
WR TRISB
Schmitt
Trigger
Peripheral OE(1)
Data Bus
SPEN
USART Data Output
USART Receive Input
RBPU
V
DD
P
EN
QD
V
DD
V
SS
Note
1: Peripheral OE (output enable) is only active if
peripheral select is active.
RD PORTB
RX/DT
RB1/
TTL
Input
Buffer
Weak
Pull-up



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