PIC18F23K20-ESLASHML datasheet(387/456 Pages) MICROCHIP

387 / 456 page

 2010 Microchip Technology Inc.

DS41303G-page 387

PIC18F2XK20/4XK20

FIGURE 26-6:

CLKOUT AND I/O TIMING

TABLE 26-9:

CLKOUT AND I/O TIMING REQUIREMENTS

Param

No.

Symbol

Characteristic

Min

Typ

Max

Units Conditions

TosH2ckL OSC1

 to CLKOUT 

—

200

(Note 1)

TosH2ckH OSC1

 to CLKOUT 

—

200

(Note 1)

TckR

CLKOUT Rise Time

—

100

(Note 1)

TckF

CLKOUT Fall Time

—

100

(Note 1)

TckL2ioV

CLKOUT

 to Port Out Valid

—

0.5 TCY + 20

(Note 1)

TioV2ckH Port In Valid before CLKOUT



0.25 TCY + 25

—

(Note 1)

TckH2ioI

Port In Hold after CLKOUT



0—

—

(Note 1)

TosH2ioV OSC1

 (Q1 cycle) to Port Out Valid

—

150

TosH2ioI

OSC1

 (Q2 cycle) to Port Input Invalid

(I/O in hold time)

100

—

TioV2osH Port Input Valid to OSC1

(I/O in setup

time)

0—

—

TioR

Port Output Rise Time

—

TioF

Port Output Fall Time

—

22†

TINP

INTx pin High or Low Time

—

23†

TRBP

RB<7:4> Change KBIx High or Low Time

TCY

——

† These parameters are asynchronous events not related to any internal clock edges.

Note 1:

Measurements are taken in RC mode, where CLKOUT output is 4 x TOSC.

Note:

Refer to Figure 26-4 for load conditions.

OSC1

CLKOUT

I/O pin

(Input)

I/O pin

(Output)

20, 21

Old Value

New Value

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