PIC16CR54C
FIGURE 10-3: CLKOUT AND I/O TIMING - PIC16CR54C
Q1
Q2
Q3
Q4
OSC1
10
11
CLKOUT
13
12
16
18
14
19
I/O Pin
(input)
15
17
I/O Pin
(output)
New Value
Old Value
20, 21
Note: All tests must be done with specified capacitive loads (see data sheet) 50 pF on I/O pins and CLKOUT.
TABLE 10-2: CLKOUT AND I/O TIMING REQUIREMENTS - PIC16CR54C
AC Characteristics
Standard Operating Conditions (unless otherwise specified)
Operating Temperature
0°C ≤ TA ≤ +70°C (commercial)
–40°C ≤ TA ≤ +85°C (industrial)
Operating Voltage VDD range is described in Section 10.1
Parameter
(1)
Typ
No.
Sym
Characteristic
(2)
Min
Max
Units
10
11
12
13
14
15
16
17
18
TosH2ckL
TosH2ckH
TckR
OSC1↑ to CLKOUT↓
—
15
15
5.0
5.0
—
30**
30**
15**
15**
40**
—
ns
ns
ns
ns
ns
ns
ns
ns
ns
(2)
OSC1↑ to CLKOUT↑
—
(2)
CLKOUT rise time
—
(2)
TckF
CLKOUT fall time
—
(2)
CLKOUT↓ to Port out valid
TckL2ioV
TioV2ckH
TckH2ioI
TosH2ioV
TosH2ioI
—
(2)
Port in valid before CLKOUT↑
(2)
0.25 TCY+30*
—
Port in hold after CLKOUT↑
OSC1↑ (Q1 cycle) to Port out valid
0*
—
—
—
(3)
—
100*
—
OSC1↑ (Q2 cycle) to Port input invalid
TBD
—
(I/O in hold time)
19
TioV2osH
Port input valid to OSC1↑
TBD
—
—
ns
(I/O in setup time)
(3)
20
21
TioR
TioF
Port output rise time
—
—
10
10
25**
25**
ns
ns
(3)
Port output fall time
*
These parameters are characterized but not tested.
** These parameters are design targets and are not tested. No characterization data available at this time.
Note 1: Data in the Typical (“Typ”) column is at 5V, 25°C unless otherwise stated. These parameters are for design guidance only
and are not tested.
2: Measurements are taken in RC Mode where CLKOUT output is 4 x TOSC.
3: See Figure 10-1 for loading conditions.
1998 Microchip Technology Inc.
Preliminary
DS40191A-page 59
MICROCHIP [ MICROCHIP ]
