PIC16F630/676
FIGURE 12-6:
CLKOUT AND I/O TIMING
Q1
Q2
Q3
Q4
OSC1
11
10
22
23
CLKOUT
13
12
19
18
14
16
I/O pin
(Input)
15
17
I/O pin
(Output)
New Value
Old Value
20, 21
TABLE 12-3: CLKOUT AND I/O TIMING REQUIREMENTS
Param
Sym
Characteristic
Min
Typ†
Max
Units Conditions
No.
10
11
12
13
14
15
16
17
TosH2ckL OSC1↑ to CLOUT↓
TosH2ckH OSC1↑ to CLOUT↑
—
—
—
—
—
75
75
35
35
—
—
—
50
—
—
200
200
100
100
20
ns (Note 1)
ns (Note 1)
ns (Note 1)
ns (Note 1)
ns (Note 1)
ns (Note 1)
ns (Note 1)
ns
TckR
TckF
CLKOUT rise time
CLKOUT fall time
TckL2ioV CLKOUT↓ to Port out valid
TioV2ckH Port in valid before CLKOUT↑
TckH2ioI Port in hold after CLKOUT↑
TosH2ioV OSC1↑ (Q1 cycle) to Port out valid
TOSC + 200 ns
—
0
—
—
150 *
300
—
—
ns
18
19
TosH2ioI OSC1↑ (Q2 cycle) to Port input
100
ns
invalid (I/O in hold time)
TioV2osH Port input valid to OSC1↑
0
—
—
ns
(I/O in setup time)
20
21
22
23
TioR
TioF
Tinp
Trbp
Port output rise time
Port output fall time
INT pin high or low time
—
—
10
10
—
—
40
40
—
—
ns
ns
ns
ns
25
PORTA change INT high or low
time
TCY
* These parameters are characterized but not tested.
† Data in ‘Typ’ column is at 5.0V, 25°C unless otherwise stated.
Note 1: Measurements are taken in RC mode where CLKOUT output is 4xTOSC.
DS40039E-page 96
© 2007 Microchip Technology Inc.
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