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RFPIC12C509AF Datasheet(PDF) 27 Page - Microchip Technology

Part # RFPIC12C509AF
Description  18/20-Pin 8-Bit CMOS Microcontroller with UHF ASK/FSK Transmitter
PDF  104 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

RFPIC12C509AF Datasheet(HTML) 27 Page - Microchip Technology

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© 2001 Microchip Technology Inc.
Preliminary
DS70031A-page 25
rfPIC12C509AG/509AF
FIGURE 5-2:
SUCCESSIVE I/O OPERATION
PC
PC+1
PC +2
PC+3
Q1
Q2 Q3 Q4
Q1
Q2 Q3 Q4 Q1 Q2 Q3 Q4
Q1 Q2 Q3 Q4
Instruction
fetched
GP5:GP0
MOVWF GPIO
NOP
Port pin
sampled here
NOP
MOVF GPIO,W
Instruction
executed
MOVWF GPIO
(Write to
GPIO)
NOP
MOVF GPIO,W
This example shows a write to GPIO followed
by areadfromGPIO.
Data setup time = (0.25 TCY –TPD)
where: TCY = instruction cycle.
TPD = propagation delay
Therefore, at higher clock frequencies, a
write followed by a read may be problematic.
(Read
GPIO)
Port pin
written here



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