Datasheet

PIC18F66K80 FAMILY
DS39977F-page 564  2010-2012 Microchip Technology Inc.
FIGURE 31-5: CLKO AND I/O TIMING
TABLE 31-9: CLKO AND I/O TIMING REQUIREMENTS
Param
No.
Symbol Characteristic Min Typ Max Units Conditions
10 TOSH2CKLOSC1  to CLKO  —75200ns(Note 1)
11 TOSH2CKHOSC1  to CLKO  —75200ns(Note 1)
12 TCKRCLKO Rise Time — 15 30 ns(Note 1)
13 TCKF CLKO Fall Time — 15 30 ns (Note 1)
14 TCKL2IOVCLKO  to Port Out Valid — — 0.5 TCY + 20 ns
15 T
IOV2CKH Port In Valid before CLKO  0.25 TCY + 25 — — ns
16 T
CKH2IOI Port In Hold after CLKO  0——ns
17 T
OSH2IOVOSC1  (Q1 cycle) to Port Out Valid — 50 150 ns
18 T
OSH2IOIOSC1  (Q2 cycle) to Port Input Invalid
(I/O in hold time)
100 — — ns
19 T
IOV2OSH Port Input Valid to OSC1 
(I/O in setup time)
0——ns
20 T
IOR Port Output Rise Time — 10 25 ns
21 T
IOF Port Output Fall Time — 10 25 ns
22† T
INP INTx pin High or Low Time 20 — — ns
23† T
RBP RB<7:4> Change INTx High or Low
Time
TCY ——ns
† These parameters are asynchronous events not related to any internal clock edges.
Note 1: Measurements are taken in EC mode, where CLKO output is 4 x TOSC.
Note: Refer to Figure 31-3 for load conditions.
OSC1
CLKO
I/O pin
(Input)
I/O pin
(Output)
Q4
Q1
Q2 Q3
10
13
14
17
20, 21
19
18
15
11
12
16
Old Value
New Value