|
PIC18F1XK22 Datasheet, PDF (352/388 Pages) Microchip Technology – 20-Pin Flash Microcontrollers with nanoWatt XLP Technology | |||
|
◁ |
PIC18F1XK22/LF1XK22
FIGURE 25-9:
CLKOUT AND I/O TIMING
Cycle
FOSC
CLKOUT
Write
Q4
I/O pin
(Input)
I/O pin
(Output)
Old Value
Fetch
Q1
OS11
OS19
OS13
Read
Q2
OS20
OS21
OS16
OS17
OS15
OS14
OS18, OS19
Execute
Q3
OS12
OS18
New Value
TABLE 25-4: CLKOUT AND I/O TIMING PARAMETERS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature -40°C ï£ï TA ï£ï +125°C
Param
No.
Sym.
Characteristic
Min.
Typâ
OS11 TosH2ckL Foscï to CLKOUTï¯ (1)
â
â
OS12 TosH2ckH Foscï to CLKOUTï (1)
â
â
OS13 TckL2ioV CLKOUTï¯ to Port out valid(1)
â
â
OS14 TioV2ckH Port input valid before CLKOUTï(1)
TOSC + 200 ns â
OS15 TosH2ioV Foscï (Q1 cycle) to Port out valid
â
50
OS16 TosH2ioI Foscï (Q2 cycle) to Port input invalid
(I/O in hold time)
50
â
OS17
OS18
TioV2osH Port input valid to Foscïï (Q2 cycle)
(I/O in setup time)
TioR
Port output rise time(2)
OS19 TioF
Port output fall time(2)
20
â
â
40
â
15
â
28
â
15
OS20* Tinp
INT pin input high or low time
25
â
OS21* Trbp
PORTB interrupt-on-change new input
TCY
â
level time
*
â
Note 1:
2:
These parameters are characterized but not tested.
Data in âTypâ column is at 3.0V, 25ï°C unless otherwise stated.
Measurements are taken in RC mode where CLKOUT output is 4 x TOSC.
Includes OSC2 in CLKOUT mode.
Max.
70
72
20
â
70*
â
â
72
32
55
30
â
â
Units Conditions
ns VDD = 3.3-5.0V
ns VDD = 3.3-5.0V
ns
ns
ns VDD = 3.3-5.0V
ns VDD = 3.3-5.0V
ns
ns VDD = 2.0V
VDD = 3.3-5.0V
ns VDD = 2.0V
VDD = 3.3-5.0V
ns
ns
DS41365D-page 352
Preliminary
ï£ 2010 Microchip Technology Inc.
|
▷ |