PIC18F2420 MICROCHIP [Microchip Technology], PIC18F2420 Datasheet - Page 346

• Manufacturer Part Number: PIC18F2420
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F2420/2520/4420/4520
FIGURE 26-6:
TABLE 26-9:
DS39631A-page 344
10
11
12
13
14
15
16
17
18
18A
19
20
20A
21
21A
22†
23†
24†
Note 1:
Param
No.
(Output)
I/O pin
(Input)
I/O pin
OSC1
CLKO
Note:
† These parameters are asynchronous events not related to any internal clock edges.
TosH2ckL OSC1
TosH2ckH OSC1
TckR
TckF
TckL2ioV
TioV2ckH Port In Valid before CLKO
TckH2ioI
TosH2ioV OSC1
TosH2ioI
TioV2osH Port Input Valid to OSC1 (I/O in setup time)
TioR
TioF
T
T
T
Symbol
INP
RBP
RCP
Measurements are taken in RC mode, where CLKO output is 4 x T
Refer to Figure 26-4 for load conditions.
CLKO AND I/O TIMING REQUIREMENTS
CLKO Rise Time
CLKO Fall Time
CLKO
Port In Hold after CLKO
OSC1
Port Input Invalid
(I/O in hold time)
Port Output Rise Time
Port Output Fall Time
INT pin High or Low Time
RB7:RB4 Change INT High or Low Time
RC7:RC4 Change INT High or Low Time
Old Value
CLKO AND I/O TIMING
Q4
to CLKO
to CLKO
to Port Out Valid
(Q1 cycle) to Port Out Valid
(Q2 cycle) to
Characteristic
10
13
17
PIC18FXXXX
PIC18LFXXXX
PIC18FXXXX
PIC18LFXXXX
PIC18FXXXX
PIC18LFXXXX
14
20, 21
Preliminary
Q1
19
0.25 T
18
Min
100
200
T
T
20
—
—
—
—
—
—
—
—
—
—
CY
0
0
CY
CY
+ 25
Q2
15
OSC
Typ
75
75
35
35
—
—
—
50
—
—
10
10
—
—
—
—
—
.
0.5 T
 2004 Microchip Technology Inc.
Max
200
200
100
100
150
CY
25
60
25
60
—
—
—
—
—
—
—
11
12
+ 20
New Value
16
Units Conditions
Q3
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
V
V
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
DD
DD
DD
= 2.0V
= 2.0V
= 2.0V