DSPIC30F2012AT-20E/ML View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

DSPIC30F2012AT-20E/ML

High-Performance, 16-bit Digital Signal Controllers

Microchip Technology 

dsPIC30F2011/2012/3012/3013

TABLE 20-14: EXTERNAL CLOCK TIMING REQUIREMENTS

AC CHARACTERISTICS

Standard Operating Conditions: 2.5V to 5.5V

(unless otherwise stated)

Operating temperature -40°C ≤ TA ≤ +85°C for Industrial

-40°C ≤ TA ≤ +125°C for Extended

Param

No.

Symbol

Characteristic

Min

Typ(1) Max Units

Conditions

OS10 FOSC External CLKN Frequency(2)

DC

(External clocks allowed only

4

in EC mode)

4

4

—

40

MHz EC

—

10

MHz EC with 4x PLL

—

10

MHz EC with 8x PLL

—

7.5 MHz EC with 16x PLL

Oscillator Frequency(2)

DC

—

4

MHz RC

0.4

—

4

MHz XTL

4

—

10

MHz XT

4

—

10

MHz XT with 4x PLL

4

—

10

MHz XT with 8x PLL

4

—

7.5 MHz XT with 16x PLL

10

—

25

MHz HS

10

—

20

MHz HS/2 with 4x PLL

10

—

20

MHz HS/2 with 8x PLL

10

—

15

MHz HS/2 with 16x PLL

12

—

25

MHz HS/3 with 4x PLL

12

—

25

MHz HS/3 with 8x PLL

12

—

22.5 MHz HS/3 with 16x PLL

31

—

33

kHz LP

—

7.37

—

MHz FRC internal

—

7.37

—

MHz FRC internal w/4x PLL

—

7.37

—

MHz FRC internal w/8x PLL

—

7.37

—

MHz FRC internal w/16x PLL

—

512

—

kHz LPRC internal

OS20 TOSC TOSC = 1/FOSC

—

OS25 TCY

Instruction Cycle Time(2)(3)

33

—

—

— See parameter OS10

for FOSC value

—

DC

ns See Table 20-17

OS30 TosL, External Clock(2) in (OSC1)

.45 x

—

—

ns EC

TosH High or Low Time

TOSC

OS31 TosR, External Clock(2) in (OSC1)

—

TosF Rise or Fall Time

—

20

ns EC

OS40 TckR CLKO Rise Time(2)(4)

—

—

—

ns See parameter DO31

OS41 TckF

CLKO Fall Time(2)(4)

—

—

—

ns See parameter DO32

Note 1: Data in “Typ” column is at 5V, 25°C unless otherwise stated. Parameters are for design guidance only and

are not tested.

2: These parameters are characterized but not tested in manufacturing.

3: 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/CLKI pin. When an external clock input is used, the

“Max.” cycle time limit is “DC” (no clock) for all devices.

4: Measurements are taken in EC or ERC modes. The CLKO signal is measured on the OSC2 pin. CLKO is

low for the Q1-Q2 period (1/2 TCY) and high for the Q3-Q4 period (1/2 TCY).

DS70139F-page 158

© 2008 Microchip Technology Inc.

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