參數(shù)資料
型號: 16F872
廠商: Microchip Technology Inc.
英文描述: CAT 5E CROSSOVER PATCH CORD CABLE GREEN 10 FT
中文描述: 28引腳,8位閃存微控制器的CMOS
文件頁數(shù): 133/160頁
文件大?。?/td> 2600K
代理商: 16F872
1999 Microchip Technology Inc.
Preliminary
DS30221A-page 133
PIC16F872
FIGURE 14-5: CLKOUT AND I/O TIMING
TABLE 14-2:
CLKOUT AND I/O TIMING REQUIREMENTS
Param
No.
Sym
Characteristic
Min
Typ
Max
Units Conditions
10*
11*
12*
13*
14*
15*
16*
17*
TosH2ckL OSC1
to CLKOUT
TosH2ckH OSC1
to CLKOUT
TckR
CLKOUT rise time
TckF
CLKOUT fall time
TckL2ioV
CLKOUT
to Port out valid
TioV2ckH Port in valid before CLKOUT
TckH2ioI
Port in hold after CLKOUT
TosH2ioV
OSC1
(Q1 cycle) to
Port out valid
TosH2ioI
OSC1
(Q2 cycle) to
Port input invalid (I/O in
hold time)
TioV2osH Port input valid to OSC1
(I/O in setup time)
TioR
Port output rise time
75
75
35
35
100
200
200
100
100
ns
ns
ns
ns
ns
ns
ns
ns
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
0.5T
CY
+ 20
255
T
OSC
+ 200
0
18*
Standard (
F
)
Extended (
LF
)
100
200
ns
ns
19*
20*
0
T
CY
T
CY
10
10
40
145
40
145
ns
ns
ns
ns
ns
ns
ns
Standard (
F
)
Extended (
LF
)
Standard (
F
)
Extended (
LF
)
21*
TioF
Port output fall time
22*
23*
Legend:
Tinp
Trbp
*
INT pin high or low time
RB7:RB4 change INT high or low time
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 CLKOUT output is 4 x T
OSC
.
Note:
Refer to Figure 14-3 for load conditions.
OSC1
CLKOUT
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
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