PIC16F882_09 Datasheet, PDF (259/328 Pages) Microchip Technology – 28/40/44-Pin, Enhanced Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC16F882/883/884/886/887
FIGURE 17-5:
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
OS14
OS18, OS19
Execute
Q3
OS12
OS18
New Value
TABLE 17-3: CLKOUT AND I/O TIMING PARAMETERS
Standard Operating Conditions (unless otherwise stated)
Operating Temperature -40°C ≤ TA ≤ +125°C
Param
No.
Sym.
Characteristic
Min.
Typ† Max. Units Conditions
OS11 TOSH2CKL FOSC↑ to CLKOUT↓ ⁽¹⁾
—
— 70 ns VDD = 5.0V
OS12 TOSH2CKH FOSC↑ to CLKOUT↑ ⁽¹⁾
—
— 72 ns VDD = 5.0V
OS13 TCKL2IOV CLKOUT↓ to Port out valid⁽¹⁾
—
— 20 ns
OS14 TIOV2CKH Port input valid before CLKOUT↑⁽¹⁾ TOSC + 200 ns — — ns
OS15* TOSH2IOV FOSC↑ (Q1 cycle) to Port out valid
—
50 70 ns VDD = 5.0V
OS16 TOSH2IOI FOSC↑ (Q2 cycle) to Port input invalid
50
(I/O in hold time)
— — ns VDD = 5.0V
OS17
OS18
TIOV2OSH
TIOR
Port input valid to FOSC↑ (Q2 cycle)
(I/O in setup time)
Port output rise time⁽²⁾
OS19 TIOF
Port output fall time⁽²⁾
20
— — ns
—
15 72 ns VDD = 2.0V
—
40 32
VDD = 5.0V
—
28 55 ns VDD = 2.0V
—
15 30
VDD = 5.0V
OS20* TINP
INT pin input high or low time
25
— — ns
OS21* TRAP
PORTA interrupt-on-change new input
TCY
level time
— — ns
*
†
Note 1:
2:
These parameters are characterized but not tested.
Data in “Typ” 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.
© 2009 Microchip Technology Inc.
DS41291F-page 257