PIC16CR57B
PIC16C5X
FIGURE 15-3: CLKOUT AND I/O TIMING - PIC16CR57B
Q1
Q4
Q2
Q3
OSC1
10
11
CLKOUT
12
16
13
18
19
14
I/O Pin
(input)
15
17
I/O Pin
Old Value
(output)
New 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 15-3: CLKOUT AND I/O TIMING REQUIREMENTS - PIC16CR57B
AC Characteristics
Standard Operating Conditions (unless otherwise specified)
Operating Temperature
0°C ≤ TA ≤ +70°C (commercial)
–40°C ≤ TA ≤ +85°C (industrial)
–40°C ≤ TA ≤ +125°C (extended)
Operating Voltage VDD range is described in Section 15.1, Section 15.2 and
Section 15.3.
Parameter
(1)
No.
Sym
Characteristic
(2)
Min
Typ
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 5.0V, 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 15-1 for loading conditions.
1998 Microchip Technology Inc.
Preliminary
DS30453B-page 127
MICROCHIP [ MICROCHIP ]
