PIC16C558T-04/SO 查看數據表（PDF） - Microchip Technology

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PIC16C558T-04/SO

ERROM-based 8-Bit CMOS microcontroller

Microchip Technology 

10.4 Timing Diagrams and Specifications

FIGURE 10-6:

EXTERNAL CLOCK TIMING

Q4

OSC1

CLKOUT

Q1

Q2

Q3

1

3

3

2

PIC16C55X

Q4

Q1

4

4

TABLE 10-1: EXTERNAL CLOCK TIMING REQUIREMENTS

Parameter

No.

Sym Characteristic

Min Typ† Max Units

Conditions

Fos External CLKIN Frequency(1)

DC

DC

DC

Oscillator Frequency(1)

DC

0.1

1

DC

1

Tosc External CLKIN Period(1)

250

50

5

Oscillator Period(1)

250

250

50

5

2

Tcy Instruction Cycle Time(1)

1.0

3*

TosL, External Clock in (OSC1) High or 100*

TosH Low Time

2*

20*

4*

TosR, External Clock in (OSC1) Rise or

25*

TosF Fall Time

50*

15*

* These parameters are characterized but not tested.

—

—

—

—

—

—

–

—

—

—

—

—

—

—

Fos/4

—

—

—

—

—

—

4

20

200

4

4

20

200

—

—

—

—

10,000

1,000

—

DC

—

—

—

—

—

—

MHz XT and RC osc mode, VDD=5.0V

MHz HS osc mode

kHz LP osc mode

MHz

MHz

MHz

kHz

RC osc mode, VDD=5.0V

XT osc mode

HS osc mode

LP osc mode

ns XT and RC osc mode

ns HS osc mode

µs LP osc mode

ns RC osc mode

ns XT osc mode

ns HS osc mode

µs LP osc mode

µs TCY=FOS/4

ns XT osc mode

µs LP osc mode

ns HS osc mode

ns XT osc mode

ns LP osc mode

ns HS osc mode

† Data in “Typ” column is at 5.0 V, 25°C unless otherwise stated. These parameters are for design guidance only and are not

tested.

Note 1: Instruction cycle period (TCY) equals four times the input oscillator time-base period. All specified values are based on

characterization data for that particular oscillator type under standard operating conditions with the device executing

code. Exceeding these specified limits may result in an unstable oscillator operation and/or higher than expected current

consumption. All devices are tested to operate at “min.” values with an external clock applied to the OSC1 pin.

When an external clock input is used, the “Max.” cycle time limit is “DC” (no clock) for all devices.

 2002 Microchip Technology Inc.

Preliminary

DS40143D-page 81

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