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PIC16F87 Datasheet(PDF) 48 Page - Microchip Technology

Part # PIC16F87
Description  18/20/28-Pin Enhanced Flash MCUs with nanoWatt Technology
PDF  230 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F87 Datasheet(HTML) 48 Page - Microchip Technology

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PIC16F87/88
DS30487D-page 48
 2002-2013 Microchip Technology Inc.
FIGURE 4-11:
PRIMARY SYSTEM CLOCK AFTER RESET (EC, RC, INTRC)
Q4
Q1
Q3 Q4
Q1 Q2
OSC1
Program
PC
0000h
T1OSI
Q3
TT1P(1)
Q4
OSC2
OSTS
System Clock
0001h
Q1 Q2 Q3 Q4 Q1 Q2
Counter
0003h
0004h
0002h
Q1 Q2 Q3 Q4
MCLR
TCPU(2)
Note
1: TT1P = 30.52
s.
2: TCPU = 5-10
s (1 MHz system clock).
CPU Start-up



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