PIC16C62B/72A
FIGURE 13-6: CLKOUT AND I/O TIMING
Q1
Q2
Q3
Q4
OSC1
11
10
CLKOUT
13
12
19
18
14
16
I/O Pin
(input)
15
17
I/O Pin
(output)
new value
old value
20, 21
Note: Refer to Figure 13-4 for load conditions.
TABLE 13-3: CLKOUT AND I/O TIMING REQUIREMENTS
Param Sym
No.
Characteristic
Min
Typ†
Max
Units Conditions
10*
11*
12*
13*
14*
15*
16*
17*
18*
18A*
TosH2ckL OSC1↑ to CLKOUT↓
TosH2ckH OSC1↑ to CLKOUT↑
—
—
—
—
—
75
75
35
35
—
—
—
50
—
—
200
200
100
100
ns Note 1
ns Note 1
ns Note 1
ns Note 1
TckR
TckF
CLKOUT rise time
CLKOUT fall time
TckL2ioV CLKOUT ↓ to Port out valid
0.5TCY + 20 ns Note 1
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 PIC16CXX
Tosc + 200
—
—
ns Note 1
0
ns Note 1
—
150
—
ns
ns
ns
100
200
input invalid (I/O in hold
time)
PIC16LCXX
—
19*
20*
TioV2osH Port input valid to OSC1↑ (I/O in setup time)
0
—
—
10
—
10
—
—
—
—
40
80
40
80
—
—
ns
ns
ns
ns
ns
ns
ns
TioR
Port output rise time
Port output fall time
INT pin high or low time
PIC16CXX
PIC16LCXX
PIC16CXX
PIC16LCXX
20A*
21*
—
TioF
—
21A*
22††*
23††*
—
Tinp
Trbp
TCY
TCY
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 edge.
Note 1: Measurements are taken in RC Mode where CLKOUT output is 4 x TOSC.
1998 Microchip Technology Inc.
Preliminary
DS35008B-page 91
MICROCHIP [ MICROCHIP ]
