PIC16F882-E/PTSQTP Просмотр технического описания (PDF) - Microchip Technology

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PIC16F882-E/PTSQTP

28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers

Microchip 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

——

—

15 72

—

40 32

—

28 55

—

15 30

OS20* TINP

INT pin input high or low time

25

——

OS21* TRAP

PORTA interrupt-on-change new

input level time

TCY

——

*

†

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.

ns

ns VDD = 2.0V

VDD = 5.0V

ns VDD = 2.0V

VDD = 5.0V

ns

ns

 2006-2012 Microchip Technology Inc.

DS41291G-page 261

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