Datasheet
PIC16(L)F720/721
DS40001430E-page 198 2010-2013 Microchip Technology Inc.
FIGURE 23-7: CLKOUT AND I/O TIMING
FOSC
CLKOUT
I/O pin
(Input)
I/O pin
(Output)
Q4
Q1
Q2 Q3
OS11
OS19
OS13
OS15
OS18, OS19
OS20
OS21
OS17
OS16
OS14
OS12
OS18
Old Value
New Value
Write Fetch Read ExecuteCycle
TABLE 23-3: CLKOUT AND I/O TIMING PARAMETERS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature -40°C T
A +125°C
Param.
No.
Sym. Characteristic Min. Typ† Max. Units Conditions
OS11* TOSH2CKLFOSC to CLKOUT
(1)
— — 70 ns VDD = 3.3-5.0V
OS12* T
OSH2CKHFOSC to CLKOUT
(1)
— — 72 ns VDD = 3.3-5.0V
OS13* T
CKL2IOVCLKOUT to Port out valid
(1)
— — 20 ns
OS14* T
IOV2CKH Port input valid before CLKOUT
(1)
TOSC + 200 ns — — ns
OS15* T
OSH2IOVFOSC (Q1 cycle) to Port out valid — 50 70* ns VDD = 3.3-5.0V
OS16* TOSH2IOIFOSC (Q2 cycle) to Port input invalid
(I/O in hold time)
50 — — ns VDD = 3.3-5.0V
OS17* T
IOV2OSH Port input valid to FOSC(Q2 cycle)
(I/O in setup time)
20 — — ns
OS18* T
IOR Port output rise time —
—
15
40
32
72
ns VDD = 2.0V
V
DD = 3.3-5.0V
OS19* TIOF Port output fall time —
—
28
15
55
30
ns VDD = 2.0V
V
DD = 3.3-5.0V
OS20* T
INP INT pin input high or low time 25 — — ns
OS21* TRBP PORTB interrupt-on-change new input
level time
TCY ——ns
* These parameters are characterized but not tested.
† Data in “Typ” column is at 3.0V, 25C unless otherwise stated.
Note 1: Measurements are taken in EC mode where CLKOUT output is 4 x T
OSC.