RFPIC12C509AG Microchip Technology Inc., RFPIC12C509AG Datasheet - Page 27

• Manufacturer Part Number: RFPIC12C509AG
• Description: 18/20-pin 8-bit Cmos Microcontroller With Uhf Ask/fsk Transmitter
• Manufacturer: Microchip Technology Inc.

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