PIC16F1459-ESSQTP datasheet(367/418 Pages) MICROCHIP

367 / 418 page

 2012 Microchip Technology Inc.

Preliminary

DS41639A-page 367

PIC16(L)F1454/5/9

29.9

AC Characteristics: PIC16(L)F1454/5/9-I/E

FIGURE 29-5:

CLOCK TIMING

TABLE 29-1:

CLOCK OSCILLATOR TIMING REQUIREMENTS

TABLE 29-2:

OSCILLATOR PARAMETERS

Standard Operating Conditions (unless otherwise stated)

Operating temperature

-40°C

 TA  +125°C

Param

No.

Sym.

Characteristic

Min.

Typ†

Max.

Units

Conditions

OS01

FOSC

External CLKIN Frequency(1)

—

0.5

MHz

EC Oscillator mode (low)

—

MHz

EC Oscillator mode (medium)

—

MHz

EC Oscillator mode (high)

OS02

TOSC

External CLKIN Period(1)

31.25

—



EC mode

OS03

TCY

Instruction Cycle Time(1)

125

—

TCY = FOSC/4

These parameters are characterized but not tested.

†

Data in “Typ” column is at 3.0V, 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 con-

sumption. All devices are tested to operate at “min” values with an external clock applied to CLKIN pin. When an external

clock input is used, the “max” cycle time limit is “DC” (no clock) for all devices.

Standard Operating Conditions (unless otherwise stated)

Operating Temperature

-40°C

TA +125°C

Param

No.

Sym.

Characteristic

Min.

Typ†

Max.

Units

Conditions

OS08

HFOSC

Internal Calibrated HFINTOSC Frequency(1)

—

16.0

—

MHz

0°C

 TA  +85°C

OS08A HFTOL

Frequency Tolerance

—

± 3

—

+25°C, 16 MHz

—± 6

—

0°C

 TA  +85°C, 16 MHz

OS09

LFOSC

Internal LFINTOSC Frequency

—

kHz

-40°C

 TA  +125°C

OS10* TIOSC ST

HFINTOSC

Wake-up from Sleep Start-up Time

—5

s

OS11*

TUNELOCK HFINTOSC

Self-tune Lock Time

—<5

NOTE 2

These parameters are characterized but not tested.

†

Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are

not tested.

Note 1:

To ensure these oscillator frequency tolerances, VDD and VSS must be capacitively decoupled as close to the device as

possible. 0.1

F and 0.01 F values in parallel are recommended.

Time for reference clock stable and in range to HFINTOSC tuned within range specified by OS08A (with Self-Tune).

CLKIN

CLKOUT

OS02

OS03

(CLKOUT Mode)

Note

See Table 29-3 for timing information.

OS11

OS12

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