PIC17C752 MICROCHIP [Microchip Technology], PIC17C752 Datasheet - Page 233

• Manufacturer Part Number: PIC17C752
• Description: High-Performance 8-Bit CMOS EPROM Microcontrollers
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 20-3: CLKOUT AND I/O TIMING
TABLE 20-3:
Note 1:
1997 Microchip Technology Inc.
Param.
*
†
‡
No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
I/O Pin
(output)
OSC2 †
† In EC and RC modes only.
I/O Pin
(input)
OSC1
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 for design guidance only and are not tested, nor characterized.
Measurements are taken in EC Mode where CLKOUT output is 4 x T
Sym
TosL2ckL
TosL2ckH
TckR
TckF
TckH2ioV
TioV2ckH
TckH2ioI
TosL2ioV
TosL2ioI
TioV2osL
TioR
TioF
TinHL
TrbHL
CLKOUT AND I/O TIMING REQUIREMENTS
old value
Characteristic
CLKOUT
(I/O in hold time)
OSC1 to CLKOUT
OSC1 to CLKOUT
CLKOUT rise time
CLKOUT fall time
CLKOUT
out valid
Port in valid before
Port in hold after CLKOUT
OSC1 (Q1 cycle) to Port out valid
OSC1 (Q2 cycle) to Port input invalid
Port input valid to OSC1
(I/O in setup time)
Port output rise time
Port output fall time
INT pin high or low time
RB7:RB0 change INT high or low time
Q4
to Port
PIC17CXXX
PIC17LCXXX
PIC17CXXX
PIC17LCXXX
17
10
13
Preliminary
Q1
14
20, 21
19
0.25T
0.25T
23
22
30 ‡
Min
25 *
25 *
CY
CY
0 ‡
0 ‡
—
—
—
—
—
—
—
—
—
OSC
+ 25 ‡
+ 50 ‡
18
.
Q2
15
Typ†
15 ‡
15 ‡
10 ‡
10 ‡
5 ‡
5 ‡
—
—
—
—
—
—
—
—
—
—
0.5T
0.5T
100 ‡
CY
CY
Max
30 ‡
30 ‡
15 ‡
15 ‡
35 ‡
35 ‡
—
—
—
—
—
—
—
+ 20 ‡
+ 50 ‡
11
new value
12
DS30264A-page 233
16
Units Conditions
Q3
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1