MCP2155_13 datasheet(31/52 Pages) MICROCHIP

31 / 52 page

 2001-2013 Microchip Technology Inc.

Preliminary

DS21690B-page 31

MCP2155

4.3

Timing Diagrams and Specifications

FIGURE 4-3:

EXTERNAL CLOCK TIMING

TABLE 4-3:

EXTERNAL CLOCK TIMING REQUIREMENTS

AC Characteristics

Standard Operating Conditions (unless otherwise specified)

Operating Temperature:

–40

C  TA  +85C (industrial)

Operating Voltage VDD range is described in Section 4.1

Param.

No.

Sym

Characteristic

Min

Typ(1)

Max

Units

Conditions

1TOSC

External CLKIN Period (2, 3)

90.422

—

90.422

—

Device Operation

Disable Clock for low power

Oscillator Period (2)

90.422

—

90.422

FOSC

External CLKIN

Frequency (2, 3)

11.0592

—

11.0592

MHz

Oscillator Frequency (2)

11.0592

—

11.0592

MHz

FERR

Error in Frequency

—

± 0.01

ECLK

External Clock Error

—

± 0.01

4TosR,

TosF

Clock in (OSC1)

Rise or Fall Time

—

Note 1: Data in the Typical (“Typ”) column is at 5V, 25

C unless otherwise stated. These parameters are for design

guidance only and are not tested.

2: All specified values are based on oscillator characterization data under standard operating conditions.

Exceeding these specified limits may result in unstable oscillator operation and/or higher than expected cur-

rent consumption.

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

3: A duty cycle of no more than 60% (High time/Low time, or Low time/High time) is recommended for external

clock inputs.

OSC1

21690B.book Page 31 Thursday, January 10, 2013 1:06 PM

MCP2155 bảng dữ liệu(PDF) 31 Page - Microchip Technology

MCP2155 bảng dữ liệu(HTML) 31 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52

bảng dữ liệu tải về

Link URL