PIC17C42AT-25/P View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
PIC17C42AT-25/P Datasheet PDF : 240 Pages
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PIC17C4X
Applicable Devices 42 R42 42A 43 R43 44
FIGURE 17-3: CLKOUT AND I/O TIMING
Q4
OSC1
OSC2 †
I/O Pin
(input)
I/O Pin
(output)
old value
Q1
10
13
14
17
Q2
22
23
15
Q3
11
12
16
new value
† In EC and RC modes only.
20, 21
TABLE 17-3: CLKOUT AND I/O TIMING REQUIREMENTS
Parameter
No.
Sym
Characteristic
Min
Typ† Max Units Conditions
10
TosH2ckL OSC1↑ to CLKOUT↓
—
15 ‡
30 ‡
ns
Note 1
11
TosH2ckH OSC1↑ to CLKOUT↑
—
15 ‡
30 ‡
ns
Note 1
12
TckR
CLKOUT rise time
—
5‡
15 ‡
ns
Note 1
13
TckF
CLKOUT fall time
—
5‡
15 ‡
ns
Note 1
14
TckH2ioV CLKOUT↑ to Port out valid
—
— 0.5TCY + 20‡ ns
Note 1
15
TioV2ckH Port in valid before CLKOUT↑
0.25TCY + 25 ‡ —
—
ns
Note 1
16
TckH2ioI Port in hold after CLKOUT↑
0‡
—
—
ns
Note 1
17
TosH2ioV OSC1↑ (Q1 cycle) to Port out valid
—
—
100 ‡
ns
20
TioR
Port output rise time
—
10 ‡
35 ‡
ns
21
TioF
Port output fall time
—
10 ‡
35 ‡
ns
22
TinHL
INT pin high or low time
25 *
—
—
ns
23
TrbHL
RB7:RB0 change INT high or low time
25 *
—
—
ns
*
†
‡
Note 1:
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 for design guidance only and are not tested, nor characterized.
Measurements are taken in EC Mode where OSC2 output = 4 x TOSC = TCY.
DS30412C-page 156
© 1996 Microchip Technology Inc.
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