PIC18F2220_07 Datasheet, PDF (327/386 Pages) Microchip Technology – 28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

PIC18F2220/2320/4220/4320
FIGURE 26-7:
OSC1
CLKO AND I/O TIMING
Q4
Q1
10
CLKO
13
14
I/O pin
(Input)
17
I/O pin
(Output)
Old Value
Note:
20, 21
Refer to Figure 26-5 for load conditions.
Q2
19
18
15
Q3
11
12
16
New Value
TABLE 26-9: CLKO AND I/O TIMING REQUIREMENTS
Param
No.
Symbol
Characteristic
Min
Typ
Max Units Conditions
10
TOSH2CKL OSC1 ↑ to CLKO ↓
—
75
200
ns
(1)
11
TOSH2CKH OSC1 ↑ to CLKO ↑
—
75
200
ns
(1)
12
TCKR
CLKO Rise Time
—
35
100
ns
(1)
13
TCKF
CLKO Fall Time
—
35
100
ns
(1)
14
TCKL2IOV CLKO ↓ to Port Out Valid
—
— 0.5 TCY + 20 ns
(1)
15
TIOV2CKH Port In Valid before CLKO ↑
0.25 TCY + 25 —
—
ns
(1)
16
TCKH2IOI Port In Hold after CLKO ↑
0
—
—
ns
(1)
17
TOSH2IOV OSC1↑ (Q1 cycle) to Port Out Valid
—
50
150
ns
18
TOSH2IOI OSC1↑ (Q2 cycle) to Port PIC18FXX20
100
—
—
ns
18A
Input Invalid
PIC18LFXX20
200
—
—
ns
(I/O in hold time)
19
TIOV2OSH Port Input Valid to OSC1↑ (I/O in setup time)
0
—
—
ns
20
TIOR
Port Output Rise Time PIC18FXX20
—
10
25
ns
20A
PIC18LFXX20
—
—
60
ns
21
TIOF
Port Output Fall Time
PIC18FXX20
—
10
25
ns
21A
PIC18LFXX20
—
—
60
ns
Note 1: Measurements are taken in RC mode, where CLKO output is 4 x TOSC.
© 2007 Microchip Technology Inc.
DS39599F-page 325