PIC16F1825T-ESS datasheet(361/448 Pages) MICROCHIP

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 2010-2012 Microchip Technology Inc.

DS41440C-page 361

PIC16(L)F1825/1829

30.8

AC Characteristics: PIC16(L)F1825/1829-I/E

FIGURE 30-6:

CLOCK TIMING

TABLE 30-1:

CLOCK OSCILLATOR TIMING REQUIREMENTS

OSC1/CLKIN

OSC2/CLKOUT

OS02

OS03

OS04

OSC2/CLKOUT

(LP,XT,HS Modes)

(CLKOUT Mode)

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)

Oscillator Frequency(1)

—

32.768

—

kHz

LP Oscillator mode

0.1

—

MHz

XT Oscillator mode

—

MHz

HS Oscillator mode, VDD

 2.7V

—

MHz

HS Oscillator mode, VDD > 2.7V

—

MHz

RC Oscillator mode

OS02

TOSC

External CLKIN Period(1)

—

s

LP Oscillator mode

250

—



XT Oscillator mode

—



HS Oscillator mode

31.25

—



EC Oscillator mode

Oscillator Period(1)

—

30.5

—

s

LP Oscillator mode

250

—

10,000

XT Oscillator mode

—

1,000

HS Oscillator mode

250

—

RC Oscillator mode

OS03

TCY

Instruction Cycle Time(1)

125

—

TCY = FOSC/4

OS04*

TosH,

TosL

External CLKIN High,

External CLKIN Low

2—

—

s

LP oscillator

100

—

XT oscillator

—

HS oscillator

OS05*

TosR,

TosF

External CLKIN Rise,

External CLKIN Fall

0—



LP oscillator

0—



XT oscillator

0—



HS oscillator

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

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

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

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