Datasheet

 1996 Microchip Technology Inc. DS30430B-page 93
PIC16F8X
Applicable Devices F83 CR83 F84 CR84
FIGURE 13-4: CLKOUT AND I/O TIMING
TABLE 13-4: CLKOUT AND I/O TIMING REQUIREMENTS
Parameter
No. Sym Characteristic Min Typ† Max Units Conditions
10 TosH2ckL OSC1↑ to CLKOUT↓ PIC16CR8X — 15 30 * ns Note 1
10A PIC16LCR8X — 15 120 * ns Note 1
11 TosH2ckH OSC1↑ to CLKOUT↑ PIC16CR8X — 15 30 * ns Note 1
11A PIC16LCR8X — 15 120 * ns Note 1
12 TckR CLKOUT rise time PIC16CR8X — 15 30 * ns Note 1
12A PIC16LCR8X — 15 100 * ns Note 1
13 TckF CLKOUT fall time PIC16CR8X — 15 30 * ns Note 1
13A PIC16LCR8X — 15 100 * ns Note 1
14 TckL2ioV CLKOUT ↓ to Port out valid — — 0.5TCY +20 * ns Note 1
15 TioV2ckH Port in valid before PIC16CR8X 0.30TCY + 30 * — — ns Note 1
CLKOUT ↑ PIC16LCR8X 0.30TCY + 80 * — — ns Note 1
16 TckH2ioI Port in hold after CLKOUT ↑ 0 * — — ns Note 1
17 TosH2ioV OSC1↑ (Q1 cycle) to PIC16CR8X — — 125 * ns
Port out valid PIC16LCR8X — — 250 * ns
18 TosH2ioI OSC1↑ (Q2 cycle) to Port input invalid
(I/O in hold time)
TBD — — ns
19 TioV2osH Port input valid to OSC1↑
(I/O in setup time)
TBD — — ns
20 TioR Port output rise time PIC16CR8X — 10 25 * ns
20A PIC16LCR8X — 10 60 * ns
21 TioF Port output fall time PIC16CR8X — 10 25 * ns
21A PIC16LCR8X — 10 60 * ns
22 Tinp INT pin high PIC16CR8X 20 * — — ns
22A or low time PIC16LCR8X 55 * — — ns
23 Trbp RB7:RB4 change INT PIC16CR8X TOSC §— — ns
23A high or low time PIC16LCR8X TOSC §— — ns
* These parameters are characterized but not tested.
† Data in "Typ" column is at 5.0V, 25°C unless otherwise stated. These parameters are for design guidance only
and are not tested.
§ By design
Note 1: Measurements are taken in RC Mode where CLKOUT output is 4 x T
OSC.
OSC1
CLKOUT
I/O Pin
(input)
I/O Pin
(output)
Q4
Q1
Q2 Q3
10
13
14
17
20, 21
22
23
19
18
15
11
12
16
old value
new value
Note: All tests must be done with specified capacitive loads (Figure 13-2) 50 pF on I/O pins and CLKOUT.