PIC17C7XX Datasheet, PDF (248/328 Pages) Microchip Technology – High-Performance 8-Bit CMOS EPROM Microcontrollers with 10-bit A/D

PIC17C7XX
FIGURE 20-3: CLKOUT AND I/O TIMING
Q4
Q1
Q2
Q3
OSC1
OSC2 †
I/O Pin
(input)
I/O Pin
(output)
old value
† In EC and RC modes only.
10
13
14 ₁₉
22
23
18
17
15
20, 21
11
12
16
new value
TABLE 20-3: CLKOUT AND I/O TIMING REQUIREMENTS
Param
No.
Sym
Characteristic
Typ
Min
†
Max
Units Conditions
10
11
12
13
14
15
16
17
18
19
20
21
22
23
*
†
‡
Note 1:
TosL2ckL OSC1↓ to CLKOUT↓
TosL2ckH OSC1↓ to CLKOUT↑
—
15 ‡
30 ‡
ns
Note 1
—
15 ‡
30 ‡
ns
Note 1
TckR
CLKOUT rise time
—
5‡
15 ‡
ns
Note 1
TckF
CLKOUT fall time
—
5‡
15 ‡
ns
Note 1
TckH2ioV CLKOUT ↑ to Port out valid
TioV2ckH Port in valid before CLKOUT↑
—
— 0.5TCY + 20 ns
‡
0.25TCY + 25 ‡ —
—
ns
Note 1
Note 1
TckH2ioI Port in hold after CLKOUT↑
0‡
—
—
ns
Note 1
TosL2ioV OSC1↓ (Q1 cycle) to Port out valid
—
—
100 ‡
ns
TosL2ioI
TioV2osL
TioR
OSC1↓ (Q2 cycle) to Port input
invalid
(I/O in hold time)
Port input valid to OSC1↓
(I/O in setup time)
Port output rise time
0‡
—
—
ns
30 ‡
—
—
ns
—
10 ‡
35 ‡
ns
TioF
Port output fall time
—
10 ‡
35 ‡
ns
TinHL
INT pin high or low time
25 *
—
—
ns
TrbHL
RB7:RB0 change INT high or low
time
25 *
—
—
ns
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 CLKOUT output is 4 x TOSC.
DS30289A-page 248
Preliminary
© 1998 Microchip Technology Inc.