PIC18F25K20T-ISO Datasheet, PDF (387/456 Pages) Microchip Technology – 28/40/44-Pin Flash Microcontrollers with nanoWatt XLP Technology

PIC18F2XK20/4XK20
FIGURE 26-6:
OSC1
CLKOUT AND I/O TIMING
Q4
Q1
10
CLKOUT
13
14
I/O pin
(Input)
17
I/O pin
(Output)
Old Value
Note:
20, 21
Refer to Figure 26-4 for load conditions.
Q2
19
18
15
Q3
11
12
16
New Value
TABLE 26-9: CLKOUT AND I/O TIMING REQUIREMENTS
Param
No.
Symbol
Characteristic
Min
Typ
Max Units Conditions
10 TosH2ckL OSC1  to CLKOUT 
—
75
200
ns
11
TosH2ckH OSC1  to CLKOUT 
—
75
200
ns
12 TckR
CLKOUT Rise Time
—
35
100
ns
13 TckF
CLKOUT Fall Time
—
35
100
ns
14 TckL2ioV CLKOUT  to Port Out Valid
—
— 0.5 TCY + 20 ns
15 TioV2ckH Port In Valid before CLKOUT 
0.25 TCY + 25 —
—
ns
16 TckH2ioI Port In Hold after CLKOUT 
0
—
—
ns
17 TosH2ioV OSC1  (Q1 cycle) to Port Out Valid
—
50
150
ns
18 TosH2ioI OSC1  (Q2 cycle) to Port Input Invalid
(I/O in hold time)
100
—
—
ns
19 TioV2osH Port Input Valid to OSC1 (I/O in setup
time)
0
—
—
ns
20 TioR
Port Output Rise Time
—
10
25
ns
21 TioF
Port Output Fall Time
—
10
25
ns
22† TINP
INTx pin High or Low Time
20
—
—
ns
23† TRBP
RB<7:4> Change KBIx High or Low Time
TCY
—
—
ns
† These parameters are asynchronous events not related to any internal clock edges.
Note 1: Measurements are taken in RC mode, where CLKOUT output is 4 x TOSC.
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
 2010 Microchip Technology Inc.
DS41303G-page 387