PIC16F688

Manufacturer Part NumberPIC16F688
ManufacturerMicrochip Technology Inc.
PIC16F688 datasheet
 


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Page 157/202

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FIGURE 14-5:
CLKOUT AND I/O TIMING
Cycle
Write
Q4
F
OSC
CLKOUT
I/O pin
(Input)
I/O pin
Old Value
(Output)
TABLE 14-3:
CLKOUT AND I/O TIMING PARAMETERS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature -40°C ≤ T
≤ +125°C
A
Param
Sym
Characteristic
No.
↑ to CLKOUT↓
OS11
T
H2
L
F
OS
CK
OSC
↑ to CLKOUT↑
OS12
T
H2
H F
OS
CK
OSC
OS13
T
L2
V
CLKOUT↓ to Port out valid
CK
IO
OS14
T
V2
H
Port input valid before CLKOUT↑
IO
CK
↑ (Q1 cycle) to Port out valid
OS15*
T
H2
V
F
OS
IO
OSC
↑ (Q2 cycle) to Port input invalid
OS16
T
H2
I
F
OS
IO
OSC
(I/O in hold time)
OS17
T
V2
H
Port input valid to F
IO
OS
(I/O in setup time)
OS18
T
R
Port output rise time
IO
OS19
T
F
Port output fall time
IO
OS20*
T
INT pin input high or low time
INP
OS21*
T
PORTA interrupt-on-change new input
RAP
level time
*
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
2:
Includes OSC2 in CLKOUT mode.
© 2007 Microchip Technology Inc.
Fetch
Read
Q1
Q2
OS11
OS20
OS21
OS19
OS16
OS13
OS17
OS15
OS14
OS18, OS19
Min
Typ†
(1)
(1)
(1)
(1)
T
+ 200 ns
OSC
50
50
↑ (Q2 cycle)
20
OSC
(2)
15
40
(2)
28
15
25
T
CY
OSC
PIC16F688
Execute
Q3
OS12
OS18
New Value
Max
Units
Conditions
70
ns
V
= 5.0V
DD
72
ns
V
= 5.0V
DD
20
ns
ns
70
ns
V
= 5.0V
DD
ns
V
= 5.0V
DD
ns
72
ns
V
= 2.0V
DD
32
V
= 5.0V
DD
55
ns
V
= 2.0V
DD
30
V
= 5.0V
DD
ns
ns
.
DS41203D-page 155