PIC16C63A/65B/73B/74B
FIGURE 16-6:
CLKOUT AND I/O TIMING
Q1
Q2
Q3
Q4
OSC1
11
10
CLKOUT
13
12
19
18
14
16
I/O Pin
(input)
15
17
I/O Pin
(output)
new value
old value
20, 21
Note:
Refer to Figure 16-4 for load conditions.
TABLE 16-3: CLKOUT AND I/O TIMING REQUIREMENTS
Param
Sym
Characteristic
Min
Typ†
Max
Units Conditions
No.
10* TosH2ckL
11* TosH2ckH OSC1↑ to CLKOUT↑
—
75
75
35
35
—
—
—
50
—
200
200
100
100
ns
ns
ns
ns
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
OSC1↑ to CLKOUT↓
—
12* TckR
13* TckF
CLKOUT rise time
CLKOUT fall time
—
—
14* TckL2ioV CLKOUT ↓ to Port out valid
15* TioV2ckH Port in valid before CLKOUT ↑
—
0.5TCY + 20 ns
TOSC + 200
—
—
ns
ns
ns
ns
16* TckH2ioI
Port in hold after CLKOUT ↑
0
17* TosH2ioV OSC1↑ (Q1 cycle) to Port out valid
—
150
—
18*
OSC1↑ (Q2 cycle) to Port PIC16CXX
100
TosH2ioI
input invalid (I/O in hold
18A*
PIC16LCXX
time)
200
0
—
—
—
—
ns
ns
Port input valid to OSC1↑ (I/O in setup
time)
19* TioV2osH
20*
PIC16CXX
Port output rise time
—
—
10
—
10
—
—
—
40
80
40
80
—
—
ns
ns
ns
ns
ns
ns
TioR
20A*
PIC16LCXX
21*
TioF
21A*
PIC16CXX
Port output fall time
—
PIC16LCXX
—
22††* Tinp
23††* Trbp
INT pin high or low time
TCY
TCY
RB7:RB4 change INT high or low time
* These parameters are characterized but not tested.
† Data in “Typ” column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only and
are not tested.
††These parameters are asynchronous events not related to any internal clock edge.
Note 1: Measurements are taken in RC mode where CLKOUT output is 4 x TOSC.
2000 Microchip Technology Inc.
DS30605C-page 125
MICROCHIP [ MICROCHIP ]
