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PIC16F87 Datasheet(PDF) 178 Page - Microchip Technology

Part # PIC16F87
Description  18/20/28-Pin Enhanced Flash MCUs with nanoWatt Technology
PDF  230 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC16F87 Datasheet(HTML) 178 Page - Microchip Technology

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PIC16F87/88
DS30487D-page 178
 2002-2013 Microchip Technology Inc.
FIGURE 18-5:
CLKO AND I/O TIMING
TABLE 18-4:
CLKO AND I/O TIMING REQUIREMENTS
Note: Refer to Figure 18-3 for load conditions.
OSC1
CLKO
I/O Pin
(Input)
I/O Pin
(Output)
Q4
Q1
Q2
Q3
10
13
14
17
20, 21
19
18
15
11
12
16
Old Value
New Value
Param
No.
Symbol
Characteristic
Min
Typ†
Max
Units Conditions
10*
TosH2ckL
OSC1
 to CLKO 
—
75
200
ns
(Note 1)
11*
TosH2ckH
OSC1
 to CLKO 
—
75
200
ns
(Note 1)
12*
TckR
CLKO Rise Time
—
35
100
ns
(Note 1)
13*
TckF
CLKO Fall Time
—
35
100
ns
(Note 1)
14*
TckL2ioV
CLKO
 to Port Out Valid
—
—
0.5 TCY + 20
ns
(Note 1)
15*
TioV2ckH
Port In Valid before CLKO
TOSC + 200
—
—
ns
(Note 1)
16*
TckH2ioI
Port In Hold after CLKO
0—
—
ns
(Note 1)
17*
TosH2ioV
OSC1
 (Q1 cycle) to Port Out Valid
—
100
255
ns
18*
TosH2ioI
OSC1
 (Q2 cycle) to
Port Input Invalid (I/O in
hold time)
PIC16F87/88
100
—
—
ns
PIC16LF87/88
200
—
—
ns
19*
TioV2osH
Port Input Valid to OSC1
(I/O in setup time)
0
—
—
ns
20*
TIOR
Port Output Rise Time
PIC16F87/88
—
10
40
ns
PIC16LF87/88
—
—
145
ns
21*
TIOF
Port Output Fall Time
PIC16F87/88
—
10
40
ns
PIC16LF87/88
—
—
145
ns
22††*
TINP
INT Pin High or Low Time
TCY
——
ns
23††*
TRBP
RB7:RB4 Change INT High or Low Time
TCY
——
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 asynchronous events not related to any internal clock edges.
Note
1:
Measurements are taken in RC mode where CLKO output is 4 x TOSC.



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