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PIC16F636-I Datasheet, PDF (183/234 Pages) Microchip Technology – 8/14-Pin, Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology | |||
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PIC12F635/PIC16F636/639
FIGURE 15-6:
CLKOUT AND I/O TIMING
Cycle
FOSC
CLKOUT
Write
Q4
I/O pin
(Input)
I/O pin
(Output)
Old Value
Fetch
Q1
OS11
OS19
OS13
Read
Q2
OS20
OS21
OS16
OS17
OS15
OS18, OS19
OS14
Execute
Q3
OS12
OS18
New Value
TABLE 15-3: CLKOUT AND I/O TIMING PARAMETERS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature -40°C ⤠TA ⤠+125°C
Param
No.
Sym
Characteristic
Min
Typâ Max
OS11 TOSH2CKL FOSCâ to CLKOUTâ (1)
â
â 70
OS12 TOSH2CKH FOSCâ to CLKOUTâ (1)
â
â 72
OS13 TCKL2IOV CLKOUTâ to Port out valid(1)
â
â 20
OS14 TIOV2CKH Port input valid before CLKOUTâ(1) TOSC + 200 ns â â
OS15* TOSH2IOV FOSCâ (Q1 cycle) to Port out valid
â
50 70
OS16 TOSH2IOI FOSCâ (Q2 cycle) to Port input invalid
50
(I/O in hold time)
ââ
OS17
OS18
TIOV2OSH
TIOR
Port input valid to FOSCâ (Q2 cycle)
(I/O in setup time)
Port output rise time(2)
OS19 TIOF
Port output fall time(2)
20
ââ
â
40 72
â
15 32
â
28 55
â
15 30
OS20* TINP
INT pin input high or low time
25
ââ
OS21* TRAP
PORTA interrupt-on-change new input
TCY
level time
ââ
*
â
Note 1:
2:
These parameters are characterized but not tested.
Data in âTypâ column is at 5.0V, 25°C unless otherwise stated.
Measurements are taken in RC mode where CLKOUT output is 4 x TOSC.
Includes OSC2 in CLKOUT mode.
Units Conditions
ns VDD = 5.0V
ns VDD = 5.0V
ns
ns
ns VDD = 5.0V
ns VDD = 5.0V
ns
ns VDD = 2.0V
VDD = 5.0V
ns VDD = 2.0V
VDD = 5.0V
ns
ns
© 2007 Microchip Technology Inc.
DS41232D-page 181
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