Datasheet

PIC16F785/HV785
DS41249E-page 152 © 2008 Microchip Technology Inc.
FIGURE 19-4: CLKOUT AND I/O TIMING
TABLE 19-2: CLKOUT AND I/O TIMING REQUIREMENTS
Param
No.
Sym Characteristic Min Typ† Max Units Conditions
10 TOSH2CKLOSC1↑ to CLKOUT↓ —75200ns(Note 1)
11 T
OSH2CKHOSC1↑ to CLKOUT↑ —75200ns(Note 1)
12 TCKR CLKOUT rise time — 35 100 ns (Note 1)
13 TCKF CLKOUT fall time — 35 100 ns (Note 1)
14 T
CKL2IOVCLKOUT↓ to Port out valid — — 20 ns (Note 1)
15 TIOV2CKH Port input valid before CLKOUT↑ TOSC + 200 ns — — ns (Note 1)
16 TCKH2IOI Port input hold after CLKOUT↑ 0 — — ns (Note 1)
17 TOSH2IOVOSC1↑ (Q1 cycle) to Port out valid — 50 150 * ns
——300ns
18 T
OSH2IOIOSC1↑ (Q2 cycle) to Port input
invalid (I/O in hold time)
100 — — ns
19 T
IOV2OSH Port input valid to OSC1↑
(I/O in setup time)
0——ns
20 T
IOR Port output rise time — 10 40 ns
21 T
IOF Port output fall time — 10 40 ns
22 T
INP INT pin high or low time 25 — — ns
23 TRBP PORTA interrupt-on-change high or
low time
TCY ——ns
* 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 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