PIC17C42 Microchip Technology, PIC17C42 Datasheet - Page 156

• Manufacturer Part Number: PIC17C42
• Description: High-Performance 8-Bit CMOS EPROM/ROM Microcontroller
• Manufacturer: Microchip Technology

PIC17C4X
FIGURE 17-3: CLKOUT AND I/O TIMING
TABLE 17-3:
DS30412C-page 156
Applicable Devices 42 R42 42A 43 R43 44
Note 1: Measurements are taken in EC Mode where OSC2 output = 4 x T
Parameter
*
†
‡
OSC2 †
† In EC and RC modes only.
No.
I/O Pin
(output)
10
11
12
13
14
15
16
17
20
21
22
23
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.
TosH2ckL
TosH2ckH
TckR
TckF
TckH2ioV
TioV2ckH
TckH2ioI
TosH2ioV
TioR
TioF
TinHL
TrbHL
Sym
CLKOUT AND I/O TIMING REQUIREMENTS
old value
OSC1 to CLKOUT
OSC1 to CLKOUT
CLKOUT rise time
CLKOUT fall time
CLKOUT to Port out valid
Port in valid before CLKOUT
Port in hold after CLKOUT
OSC1 (Q1 cycle) to Port out valid
Port output rise time
Port output fall time
INT pin high or low time
RB7:RB0 change INT high or low time
Q4
Characteristic
13
17
10
14
20, 21
Q1
0.25T
23
22
Min
25 *
25 *
CY
0 ‡
—
—
—
—
—
—
—
—
OSC
+ 25 ‡
= T
CY
Q2
15
.
Typ†
15 ‡
15 ‡
10 ‡
10 ‡
5 ‡
5 ‡
—
—
—
—
—
—
0.5T
100 ‡
Max
30 ‡
30 ‡
15 ‡
15 ‡
35 ‡
35 ‡
CY
—
—
—
—
1996 Microchip Technology Inc.
+ 20‡
11
12
Units
new value
16
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Q3
Conditions
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1
Note 1